/* ==========================================================================
   INCREMENTAL AI - MODERN RESPONSIVE STYLESHEET & EPOCH THEMES
   ========================================================================== */

:root {
  /* Default Design Tokens */
  --bg-primary: #0a0e17;
  --bg-surface: #121826;
  --bg-surface-elevated: #1a2236;
  --bg-surface-glass: rgba(26, 34, 54, 0.75);
  
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(99, 102, 241, 0.3);
  
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --accent-primary: #6366f1;
  --accent-secondary: #a855f7;
  --accent-gradient: linear-gradient(135deg, #6366f1, #a855f7);
  --accent-glow: 0 0 20px rgba(99, 102, 241, 0.35);
  
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

/* ==========================================================================
   EPOCH VISUAL THEMES
   ========================================================================== */

/* Era/Epoch 1: Antiquity & Mechanical Automata (Bronze / Terracotta / Parchment) */
body.theme-epoch-1,
body.theme-era-1 {
  --bg-primary: #12100e;
  --bg-surface: #1e1914;
  --bg-surface-elevated: #2d241c;
  --accent-primary: #d4af37;
  --accent-secondary: #c86432;
  --accent-gradient: linear-gradient(135deg, #d4af37, #c86432);
  --accent-glow: 0 0 20px rgba(212, 175, 55, 0.3);
  --border-glow: rgba(212, 175, 55, 0.25);
}

/* Era/Epoch 2: Formal Logic & Calculators (Polished Brass / Clockwork Mahogany) */
body.theme-epoch-2,
body.theme-era-2 {
  --bg-primary: #0f1416;
  --bg-surface: #192024;
  --bg-surface-elevated: #243036;
  --accent-primary: #e5a93c;
  --accent-secondary: #0ea5e9;
  --accent-gradient: linear-gradient(135deg, #e5a93c, #0ea5e9);
  --accent-glow: 0 0 20px rgba(229, 169, 60, 0.3);
  --border-glow: rgba(229, 169, 60, 0.25);
}

/* Era/Epoch 3: Birth of Computing & Cybernetics (Phosphor CRT Terminal Green) */
body.theme-epoch-3,
body.theme-era-3 {
  --bg-primary: #08120d;
  --bg-surface: #101e16;
  --bg-surface-elevated: #162b20;
  --accent-primary: #10b981;
  --accent-secondary: #34d399;
  --accent-gradient: linear-gradient(135deg, #10b981, #065f46);
  --accent-glow: 0 0 20px rgba(16, 185, 129, 0.4);
  --border-glow: rgba(16, 185, 129, 0.3);
}

/* Era/Epoch 4: Symbolic AI & Knowledge Systems (Amber CRT Mainframe Glow) */
body.theme-epoch-4,
body.theme-era-4 {
  --bg-primary: #140e06;
  --bg-surface: #21180d;
  --bg-surface-elevated: #2f2214;
  --accent-primary: #f59e0b;
  --accent-secondary: #fbbf24;
  --accent-gradient: linear-gradient(135deg, #f59e0b, #d97706);
  --accent-glow: 0 0 20px rgba(245, 158, 11, 0.35);
  --border-glow: rgba(245, 158, 11, 0.25);
}

/* Era/Epoch 5: Statistical Learning & Neural Resurgence (Silicon Cyan & GPU Blue) */
body.theme-epoch-5,
body.theme-era-5 {
  --bg-primary: #08101a;
  --bg-surface: #0f1c2d;
  --bg-surface-elevated: #162940;
  --accent-primary: #06b6d4;
  --accent-secondary: #3b82f6;
  --accent-gradient: linear-gradient(135deg, #06b6d4, #3b82f6);
  --accent-glow: 0 0 20px rgba(6, 182, 212, 0.35);
  --border-glow: rgba(6, 182, 212, 0.25);
}

/* Era/Epoch 6: Deep Learning & Transformers (Electric Indigo / Tensor Violet) */
body.theme-epoch-6,
body.theme-era-6 {
  --bg-primary: #0b0d1b;
  --bg-surface: #13172e;
  --bg-surface-elevated: #1e2445;
  --accent-primary: #6366f1;
  --accent-secondary: #a855f7;
  --accent-gradient: linear-gradient(135deg, #6366f1, #a855f7);
  --accent-glow: 0 0 25px rgba(99, 102, 241, 0.4);
  --border-glow: rgba(168, 85, 247, 0.3);
}

/* Era/Epoch 7: Autonomous Agents & Frontier Models (Luminous Aurora / Cyber Neon) */
body.theme-epoch-7,
body.theme-era-7 {
  --bg-primary: #0d0918;
  --bg-surface: #18112b;
  --bg-surface-elevated: #241a3d;
  --accent-primary: #ec4899;
  --accent-secondary: #8b5cf6;
  --accent-gradient: linear-gradient(135deg, #ec4899, #8b5cf6, #06b6d4);
  --accent-glow: 0 0 30px rgba(236, 72, 153, 0.45);
  --border-glow: rgba(236, 72, 153, 0.35);
}

/* ==========================================================================
   GLOBAL RESET & BASE
   ========================================================================== */

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html {
  box-sizing: border-box;
  height: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-main);
  min-height: 100vh;
  min-height: 100dvh;
  height: 100vh;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: background-color var(--transition-normal);
  -webkit-text-size-adjust: 100%;
}

button,
input,
select,
textarea {
  font-family: inherit;
}

button,
.btn-contemplate,
.btn-buy-gen,
.btn-tab,
.btn-unlock-ms,
.active-paradigm-badge,
.btn-language,
.btn-help,
.btn-bulk,
.btn-modal-close,
.btn-modal-primary,
.btn-confirm-cancel,
.btn-confirm-execute,
.btn-civ-continue,
.btn-paradigm-purge {
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  -webkit-user-select: none;
}

/* Custom Scrollbars */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-dim);
}

/* ==========================================================================
   HEADER & TOP BAR
   ========================================================================== */

.app-header {
  background: var(--bg-surface-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem 1.5rem;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  max-width: 1600px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand-section {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-logo {
  font-size: 1.6rem;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: flex;
  align-items: center;
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.version-tag {
  font-size: 0.68rem;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent-primary);
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid var(--border-glow);
  padding: 0.1rem 0.4rem;
  border-radius: var(--radius-sm);
}

.version-tag:empty {
  display: none;
}

.brand-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Era Stepper in Header */
.era-status-badge {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-glow);
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  gap: 0.65rem;
  box-shadow: var(--accent-glow);
  min-width: 0;
  flex: 1 1 auto;
  max-width: 420px;
}

.era-pill-number {
  background: var(--accent-primary);
  color: #000;
  font-weight: 800;
  font-size: 0.75rem;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  flex-shrink: 0;
}

.era-badge-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  flex: 1;
  min-width: 0;
  overflow: hidden;
}

.era-badge-top-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
  min-width: 0;
}

.era-pill-name {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
  flex: 1;
}

.era-pill-dates {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  white-space: nowrap;
  flex-shrink: 0;
}

.era-progress-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 0;
}

.era-progress-bar-bg {
  flex: 1;
  min-width: 35px;
  height: 5px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 3px;
  overflow: hidden;
  position: relative;
}

.era-progress-bar-fill {
  height: 100%;
  background: var(--accent-gradient);
  border-radius: 3px;
  transition: width 0.2s ease-out;
  box-shadow: 0 0 8px var(--accent-primary);
}

.era-progress-text {
  font-size: 0.68rem;
  color: var(--accent-primary);
  font-family: var(--font-mono);
  font-weight: 700;
  white-space: nowrap;
  flex-shrink: 0;
}

/* Header Insights Counter */
.resource-stats {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-shrink: 0;
}

.stat-group {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.stat-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  font-weight: 600;
}

.stat-value-insights {
  font-size: 1.35rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--accent-primary);
}

.stat-value-rate {
  font-size: 0.85rem;
  font-family: var(--font-mono);
  color: var(--success);
}

/* Header Actions & Help Button */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-help {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-glow);
  color: var(--text-main);
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-lg);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: all var(--transition-normal);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.btn-help:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--accent-primary);
  box-shadow: var(--accent-glow);
  transform: translateY(-1px);
}

.btn-help:active {
  transform: translateY(0);
}

.btn-help-icon {
  font-size: 0.95rem;
  line-height: 1;
}

/* ==========================================================================
   LANGUAGE PICKER DROPDOWN
   ========================================================================== */

.language-picker-container {
  position: relative;
  display: inline-block;
}

.btn-language {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-glow);
  color: var(--text-main);
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-lg);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: all var(--transition-normal);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.btn-language:hover,
.btn-language[aria-expanded="true"] {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--accent-primary);
  box-shadow: var(--accent-glow);
  transform: translateY(-1px);
}

.btn-language:active {
  transform: translateY(0);
}

.lang-flag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  flex-shrink: 0;
}

.flag-icon {
  width: 1.25rem;
  height: 0.85rem;
  border-radius: 2px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
  vertical-align: middle;
  display: inline-block;
  flex-shrink: 0;
}

.lang-code {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--text-main);
  text-transform: uppercase;
}

.lang-arrow {
  font-size: 0.65rem;
  color: var(--text-secondary);
  transition: transform var(--transition-fast);
}

.btn-language[aria-expanded="true"] .lang-arrow {
  transform: rotate(180deg);
}

.language-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 175px;
  background: var(--bg-surface-elevated, #1a1d26);
  border: 1px solid var(--border-glow, rgba(255, 255, 255, 0.15));
  border-radius: var(--radius-md, 8px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5), var(--accent-glow, 0 0 12px rgba(99, 102, 241, 0.2));
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 0.35rem 0;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 2px;
  animation: fadeInDown 0.15s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.lang-option {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0.85rem;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  text-align: left;
  cursor: pointer;
  width: 100%;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.lang-option:hover,
.lang-option:focus-visible {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-bright, #fff);
  outline: none;
}

.lang-option.active {
  background: rgba(99, 102, 241, 0.2);
  color: var(--accent-primary, #6366f1);
  font-weight: 700;
}

.lang-option .option-flag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  flex-shrink: 0;
}

.lang-option .option-name {
  flex: 1;
  white-space: nowrap;
}

.lang-option .option-check {
  font-size: 0.75rem;
  color: var(--accent-primary);
  margin-left: auto;
}

/* ==========================================================================
   MAIN 3-COLUMN LAYOUT
   ========================================================================== */

.app-main {
  flex: 1;
  min-height: 0;
  max-width: 1600px;
  width: 100%;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: grid;
  grid-template-columns: 340px 1fr 380px;
  gap: 1.25rem;
  align-items: stretch;
  overflow: hidden;
}

.panel-container {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  height: 100%;
  min-height: 0;
}

.panel-header {
  padding: 0.9rem 1.2rem;
  background: var(--bg-surface-elevated);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.panel-title {
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.panel-content {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.panel-footer {
  background: var(--bg-surface-elevated);
  border-top: 1px solid var(--border-color);
  padding: 0.35rem 0.75rem;
  font-size: 0.72rem;
  color: var(--text-muted);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  text-align: center;
  line-height: 1.2;
}

.panel-footer .footer-icon {
  font-size: 0.8rem;
  flex-shrink: 0;
}

.panel-footer .footer-msg {
  font-style: italic;
  letter-spacing: 0.01em;
}

/* ==========================================================================
   LEFT COLUMN: PRODUCTION & ACTION HUB
   ========================================================================== */

.production-sticky-header {
  padding: 0.85rem 1rem 0.65rem 1rem;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  flex-shrink: 0;
}

.contemplate-hero {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  box-shadow: var(--accent-glow);
}

.btn-contemplate {
  width: 100%;
  background: var(--accent-gradient);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  padding: 0.8rem 1rem;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  transition: transform 0.08s ease, box-shadow var(--transition-fast);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.4);
  position: relative;
  overflow: hidden;
}

.btn-contemplate:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}

.btn-contemplate:active {
  transform: scale(0.97);
}

.click-gain-badge {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* Bulk Buy Mode Toggle */
.bulk-buy-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-surface-elevated);
  padding: 0.35rem 0.5rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.bulk-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
}

.bulk-buttons {
  display: flex;
  gap: 0.25rem;
}

.btn-bulk {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-bulk:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}

.btn-bulk.active {
  background: var(--accent-primary);
  color: #000;
  border-color: var(--accent-primary);
}

/* Generator Cards List */
.generator-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.generator-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.generator-card.locked {
  opacity: 0.45;
  filter: grayscale(0.7);
}

.gen-top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.gen-identity {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.gen-icon {
  font-size: 1.35rem;
}

.gen-name {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-main);
}

.gen-flavor {
  font-size: 0.72rem;
  color: var(--text-muted);
  line-height: 1.25;
  margin-top: 0.15rem;
}

.gen-owned {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--accent-primary);
  background: rgba(255, 255, 255, 0.05);
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
}

.gen-stats-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  font-size: 0.76rem;
  font-family: var(--font-mono);
}

.gen-output-rate {
  color: var(--success);
  font-weight: 700;
}

.gen-base-rate {
  color: var(--text-dim);
  font-size: 0.72rem;
}

.btn-buy-gen {
  width: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--accent-primary);
  color: var(--accent-primary);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 700;
  font-family: var(--font-mono);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all var(--transition-fast);
}

.btn-buy-gen:hover:not(:disabled) {
  background: var(--accent-primary);
  color: #000;
}

.btn-buy-gen:disabled {
  border-color: var(--border-color);
  color: var(--text-dim);
  cursor: not-allowed;
  opacity: 0.6;
}

/* ==========================================================================
   CENTER COLUMN: HISTORICAL TIMELINE & BREAKTHROUGHS
   ========================================================================== */

.milestone-grid {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.milestone-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.95rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  transition: all var(--transition-fast);
  position: relative;
  cursor: pointer;
}

.milestone-card:hover {
  border-color: var(--accent-primary);
}

.milestone-card.selected {
  border-color: var(--accent-primary);
  box-shadow: var(--accent-glow);
}

.milestone-card.unlocked {
  border-left: 4px solid var(--success);
}

.milestone-card.available {
  border-left: 4px solid var(--accent-primary);
  animation: pulse-border 2.5s infinite;
}

.milestone-card.locked {
  opacity: 0.55;
  border-left: 4px solid var(--text-dim);
}

@keyframes pulse-border {
  0% { box-shadow: 0 0 0 rgba(99, 102, 241, 0); }
  50% { box-shadow: 0 0 12px var(--border-glow); }
  100% { box-shadow: 0 0 0 rgba(99, 102, 241, 0); }
}

.ms-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.ms-title-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.ms-year {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  font-weight: 700;
  background: rgba(255, 255, 255, 0.08);
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
}

.ms-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-main);
}

.ms-state-btn {
  font-size: 0.74rem;
  font-weight: 700;
  font-family: var(--font-mono);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.status-unlocked {
  background: rgba(16, 185, 129, 0.18);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.35);
}

.status-available {
  background: rgba(99, 102, 241, 0.18);
  color: var(--accent-primary);
}

.status-locked {
  background: rgba(100, 116, 139, 0.15);
  color: var(--text-dim);
  border: 1px solid rgba(100, 116, 139, 0.25);
}

.btn-unlock-ms {
  background: var(--accent-primary);
  color: #000;
  border: none;
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-sm);
  font-size: 0.76rem;
  font-weight: 700;
  font-family: var(--font-mono);
  cursor: pointer;
  white-space: nowrap;
  transition: transform var(--transition-fast), filter var(--transition-fast);
}

.btn-unlock-ms:hover:not(:disabled) {
  filter: brightness(1.15);
  transform: scale(1.02);
}

.btn-unlock-ms:disabled {
  background: var(--bg-surface);
  color: var(--text-dim);
  border: 1px solid var(--border-color);
  cursor: not-allowed;
  opacity: 0.65;
}

.ms-flavor {
  font-size: 0.76rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.ms-effect-preview {
  font-size: 0.76rem;
  color: var(--accent-secondary);
  font-weight: 600;
  background: rgba(168, 85, 247, 0.08);
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-sm);
  border-left: 2px solid var(--accent-secondary);
}

/* ==========================================================================
   RIGHT COLUMN: THE KNOWLEDGE CODEX (COMPACT EDUCATIONAL LORE PANEL)
   ========================================================================== */

.codex-detail {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

/* Compact Header Card with Line Indicator */
.codex-header-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.65rem 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  transition: border-color var(--transition-fast);
}

.codex-header-card.is-unlocked {
  border-left: 4px solid var(--success);
}

.codex-header-card.is-locked {
  border-left: 4px solid var(--warning);
}

.codex-header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.codex-epoch-tag {
  font-size: 0.68rem;
  font-family: var(--font-mono);
  color: var(--accent-primary);
  font-weight: 700;
}

.codex-status-pill {
  font-size: 0.68rem;
  font-weight: 700;
  padding: 0.12rem 0.45rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  white-space: nowrap;
}

.codex-status-pill.pill-unlocked {
  background: rgba(16, 185, 129, 0.2);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.4);
}

.codex-status-pill.pill-locked {
  background: rgba(245, 158, 11, 0.15);
  color: var(--warning);
  border: 1px solid rgba(245, 158, 11, 0.35);
}

.codex-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.2;
}

.codex-figure {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Sections */
.codex-section {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.codex-section-label {
  font-size: 0.66rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 700;
  color: var(--text-dim);
}

.paradigm-box {
  background: rgba(99, 102, 241, 0.08);
  border-left: 3px solid var(--accent-primary);
  padding: 0.5rem 0.75rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.8rem;
  color: var(--text-main);
  line-height: 1.38;
  font-weight: 500;
}

.lore-body {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.45;
  background: var(--bg-surface-elevated);
  padding: 0.65rem 0.8rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.citation-card {
  background: var(--bg-primary);
  border: 1px dashed var(--border-color);
  padding: 0.4rem 0.65rem;
  border-radius: var(--radius-sm);
  font-size: 0.72rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  line-height: 1.3;
}

.gameplay-impact-card {
  padding: 0.45rem 0.65rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.76rem;
  transition: all var(--transition-fast);
}

.gameplay-impact-card.bonus-active {
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.35);
  color: var(--success);
}

.gameplay-impact-card.bonus-inactive {
  background: rgba(245, 158, 11, 0.05);
  border: 1px dashed rgba(245, 158, 11, 0.35);
  color: var(--warning);
}

.bonus-icon {
  font-size: 1rem;
  line-height: 1;
}

.bonus-info {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.bonus-title {
  font-weight: 800;
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  font-family: var(--font-mono);
}

.bonus-desc {
  font-size: 0.76rem;
  color: var(--text-main);
}

/* ==========================================================================
   NOTIFICATION TOASTS & CELEBRATIONS
   ========================================================================== */

.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  z-index: 1000;
  pointer-events: none;
}

.toast {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--accent-primary);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.6), var(--accent-glow);
  padding: 0.85rem 1.2rem;
  border-radius: var(--radius-md);
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  animation: slide-in 0.3s cubic-bezier(0.16, 1, 0.3, 1), fade-out 0.4s ease 3.6s forwards;
  pointer-events: auto;
  max-width: 380px;
}

.toast-icon {
  font-size: 1.3rem;
}

.toast-body {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.toast-title {
  font-size: 0.85rem;
  font-weight: 700;
}

.toast-message {
  font-size: 0.75rem;
  color: var(--text-muted);
}

@keyframes slide-in {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes fade-out {
  from { opacity: 1; }
  to { opacity: 0; transform: translateY(10px); }
}

/* ==========================================================================
   MOBILE TAB BAR & RESPONSIVE BREAKPOINTS
   ========================================================================== */

.mobile-tab-bar {
  display: none;
}

/* --------------------------------------------------------------------------
   Intermediate Desktop & Laptop Screens (max-width: 1400px)
   -------------------------------------------------------------------------- */
@media (max-width: 1400px) {
  .header-container {
    gap: 0.65rem;
  }

  .brand-subtitle {
    display: none;
  }

  .resource-stats {
    gap: 0.85rem;
  }

  .stat-value-insights {
    font-size: 1.2rem;
  }

  .app-main {
    grid-template-columns: 290px 1fr 310px;
    gap: 0.85rem;
    padding: 0.75rem;
  }
}

/* --------------------------------------------------------------------------
   Narrow Desktop & Compact Landscape (max-width: 1250px)
   -------------------------------------------------------------------------- */
@media (max-width: 1250px) {
  .app-header {
    padding: 0.55rem 0.95rem;
  }

  .header-container {
    gap: 0.5rem;
  }

  .era-pill-dates {
    display: none;
  }

  .era-status-badge {
    max-width: 340px;
  }

  .stat-value-insights {
    font-size: 1.1rem;
  }

  .resource-stats {
    gap: 0.65rem;
  }

  .app-main {
    grid-template-columns: 275px 1fr 285px;
    gap: 0.65rem;
    padding: 0.65rem;
  }
}

/* --------------------------------------------------------------------------
   Mobile, Tablet Portrait & Compact Viewports (max-width: 1100px)
   -------------------------------------------------------------------------- */
@media (max-width: 1100px) {
  /* Pinned Bottom Navigation Tab Bar */
  .mobile-tab-bar {
    display: flex;
    order: 3;
    flex-shrink: 0;
    background: var(--bg-surface-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-top: 1px solid var(--border-color);
    border-bottom: none;
    padding: 0.45rem 0.65rem;
    padding-bottom: max(0.45rem, env(safe-area-inset-bottom, 0px));
    gap: 0.45rem;
    z-index: 90;
    box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.35);
  }

  .btn-tab {
    flex: 1;
    min-height: 44px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 0.4rem 0.65rem;
    border-radius: var(--radius-md);
    font-size: 0.82rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    transition: all var(--transition-fast);
  }

  .btn-tab:hover {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.08);
  }

  .btn-tab.active {
    background: var(--accent-primary);
    color: #000;
    border-color: var(--accent-primary);
    box-shadow: 0 0 14px var(--border-glow);
  }

  /* Compact 2-Row Application Header */
  .app-header {
    order: 1;
    flex-shrink: 0;
    padding: 0.45rem 0.65rem;
    padding-top: max(0.45rem, env(safe-area-inset-top, 0px));
    border-bottom: 1px solid var(--border-color);
  }

  .header-container {
    display: grid;
    grid-template-columns: auto 1fr auto;
    grid-template-areas:
      "brand stats actions"
      "epoch epoch paradigm";
    align-items: center;
    gap: 0.4rem 0.6rem;
    width: 100%;
    margin: 0;
  }

  .brand-section {
    grid-area: brand;
    gap: 0.45rem;
    width: auto;
    justify-content: flex-start;
  }

  .brand-logo {
    font-size: 1.35rem;
  }

  .brand-title {
    font-size: 1.05rem;
  }

  .brand-subtitle {
    display: none;
  }

  .resource-stats {
    grid-area: stats;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-glow);
    border-radius: var(--radius-md);
    padding: 0.25rem 0.65rem;
    gap: 0.75rem;
  }

  .stat-group {
    align-items: center;
    flex-direction: row;
    gap: 0.25rem;
  }

  .stat-label {
    display: none;
  }

  .stat-value-insights {
    font-size: 1.05rem;
  }

  .stat-value-rate {
    font-size: 0.75rem;
  }

  .header-actions {
    grid-area: actions;
    gap: 0.35rem;
  }

  .btn-help,
  .btn-language {
    padding: 0.35rem 0.55rem;
    font-size: 0.76rem;
    min-height: 36px;
    border-radius: var(--radius-md);
  }

  .btn-help-text {
    display: none;
  }

  .era-status-badge {
    grid-area: epoch;
    min-width: 0;
    width: 100%;
    padding: 0.35rem 0.65rem;
    gap: 0.5rem;
    border-radius: var(--radius-md);
    box-shadow: none;
  }

  .era-pill-number {
    font-size: 0.68rem;
    padding: 0.15rem 0.4rem;
  }

  .era-pill-name {
    font-size: 0.76rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
    flex: 1;
  }

  .era-pill-dates {
    display: none;
  }

  .era-progress-text {
    font-size: 0.62rem;
  }

  .active-paradigm-badge {
    grid-area: paradigm;
    min-width: 0;
    padding: 0.35rem 0.65rem;
    gap: 0.4rem;
    justify-self: end;
    border-radius: var(--radius-md);
    box-shadow: none;
  }

  .paradigm-badge-icon {
    font-size: 1rem;
  }

  .paradigm-badge-label {
    display: none;
  }

  .paradigm-badge-name {
    font-size: 0.75rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 130px;
  }

  /* Main Viewport Panel Layout */
  .app-main {
    order: 2;
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
    padding: 0.45rem;
    overflow: hidden;
    grid-template-columns: 1fr;
    gap: 0;
  }

  .panel-container {
    display: none;
    height: 100%;
    min-height: 0;
    flex: 1;
    border-radius: var(--radius-md);
    overflow: hidden;
  }

  .panel-container.active-mobile-panel {
    display: flex;
    flex-direction: column;
  }

  .panel-header {
    padding: 0.65rem 0.85rem;
  }

  .panel-title {
    font-size: 0.85rem;
  }

  .panel-content {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    padding: 0.65rem;
    gap: 0.65rem;
  }

  /* Sticky Production Action Header */
  .production-sticky-header {
    padding: 0.5rem 0.65rem;
    gap: 0.45rem;
  }

  .contemplate-hero {
    padding: 0.5rem 0.75rem;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    gap: 0.5rem;
  }

  .btn-contemplate {
    flex: 1;
    padding: 0.55rem 0.85rem;
    font-size: 0.92rem;
    min-height: 44px;
  }

  .click-gain-badge {
    font-size: 0.74rem;
    white-space: nowrap;
  }

  .bulk-buy-bar {
    padding: 0.25rem 0.45rem;
  }

  .btn-bulk {
    min-height: 32px;
    padding: 0.2rem 0.55rem;
    font-size: 0.72rem;
  }

  /* Generator Cards */
  .generator-card {
    padding: 0.75rem 0.85rem;
    gap: 0.5rem;
  }

  .gen-icon {
    font-size: 1.2rem;
  }

  .gen-name {
    font-size: 0.86rem;
  }

  .gen-flavor {
    font-size: 0.68rem;
    line-height: 1.25;
  }

  .gen-owned {
    font-size: 0.8rem;
    padding: 0.1rem 0.45rem;
  }

  .btn-buy-gen {
    min-height: 42px;
    padding: 0.45rem 0.65rem;
    font-size: 0.78rem;
  }

  /* Milestone Timeline Cards */
  .milestone-card {
    padding: 0.75rem 0.85rem;
    gap: 0.5rem;
  }

  .ms-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.5rem;
  }

  .ms-title-group {
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: baseline;
    gap: 0.35rem;
    flex-wrap: wrap;
  }

  .ms-title {
    font-size: 0.85rem;
    line-height: 1.25;
    word-break: break-word;
  }

  .ms-year {
    font-size: 0.68rem;
    padding: 0.1rem 0.35rem;
  }

  .btn-unlock-ms {
    flex-shrink: 0;
    min-height: 36px;
    padding: 0.35rem 0.65rem;
    font-size: 0.74rem;
  }

  .ms-state-btn {
    flex-shrink: 0;
    font-size: 0.7rem;
    padding: 0.2rem 0.5rem;
  }

  .ms-flavor {
    font-size: 0.72rem;
    line-height: 1.35;
  }

  .ms-effect-preview {
    font-size: 0.72rem;
    padding: 0.25rem 0.5rem;
  }

  /* Codex Entries */
  .codex-header-card {
    padding: 0.55rem 0.75rem;
    gap: 0.2rem;
  }

  .codex-title {
    font-size: 0.95rem;
  }

  .codex-figure {
    font-size: 0.74rem;
  }

  .paradigm-box {
    padding: 0.45rem 0.65rem;
    font-size: 0.76rem;
  }

  .lore-body {
    padding: 0.55rem 0.7rem;
    font-size: 0.76rem;
    line-height: 1.4;
  }

  .citation-card {
    padding: 0.35rem 0.55rem;
    font-size: 0.68rem;
  }

  .gameplay-impact-card {
    padding: 0.4rem 0.55rem;
    font-size: 0.72rem;
  }

  /* Modal Dialogs on Mobile */
  .modal-dialog {
    max-height: 85vh;
    max-height: 85dvh;
    width: 95%;
    max-width: 540px;
    border-radius: var(--radius-lg);
  }

  .modal-header {
    padding: 0.85rem 1rem;
  }

  .modal-body {
    padding: 0.95rem 1rem;
    gap: 0.85rem;
    -webkit-overflow-scrolling: touch;
  }

  .modal-footer {
    padding: 0.85rem 1rem;
  }

  .modal-title {
    font-size: 1.05rem;
  }

  .modal-subtitle {
    font-size: 0.7rem;
  }

  .btn-modal-close {
    width: 36px;
    height: 36px;
    min-width: 36px;
    font-size: 1rem;
  }

  .btn-modal-primary {
    min-height: 44px;
    font-size: 0.85rem;
    padding: 0.65rem 1.1rem;
  }

  .help-step-card {
    padding: 0.6rem 0.75rem;
    gap: 0.6rem;
  }

  .help-text {
    font-size: 0.82rem;
  }

  .event-modal-dialog {
    max-width: 560px;
  }

  .event-hero {
    gap: 0.75rem;
    padding-bottom: 0.55rem;
  }

  .event-hero-icon-container {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
  }

  .event-hero-icon {
    font-size: 1.5rem;
  }

  .event-modal-title {
    font-size: 1.1rem;
  }

  .event-modal-subtitle {
    font-size: 0.74rem;
  }

  .event-narrative-box {
    padding: 0.75rem 0.9rem;
  }

  .event-narrative-text {
    font-size: 0.82rem;
  }

  .event-quote-card {
    padding: 0.75rem 0.95rem;
  }

  .event-quote-text {
    font-size: 0.8rem;
  }

  .paradigm-modal-dialog {
    max-width: 600px;
    width: 95%;
  }

  .paradigm-hero {
    gap: 0.75rem;
    padding-bottom: 0.55rem;
  }

  .paradigm-hero-icon-container {
    width: 44px;
    height: 44px;
  }

  .paradigm-hero-icon {
    font-size: 1.5rem;
  }

  .paradigm-modal-title {
    font-size: 1.1rem;
  }

  .paradigm-modal-subtitle {
    font-size: 0.75rem;
  }

  .paradigm-2x2-grid {
    grid-template-columns: 1fr;
    gap: 0.65rem;
  }

  .paradigm-action-btn {
    padding: 0.75rem 0.9rem;
    gap: 0.45rem;
  }

  .btn-civ-continue {
    padding: 0.75rem 1rem;
    min-height: 44px;
  }

  .btn-civ-main {
    font-size: 0.92rem;
  }

  .btn-civ-sub {
    font-size: 0.7rem;
  }

  .paradigm-confirm-dialog {
    max-width: 480px;
    width: 95%;
  }

  .paradigm-confirm-hero {
    gap: 0.75rem;
  }

  .paradigm-confirm-icon {
    width: 44px;
    height: 44px;
    font-size: 1.6rem;
  }

  .paradigm-confirm-title {
    font-size: 1.05rem;
  }

  .paradigm-confirm-actions-row {
    grid-template-columns: 1fr;
    gap: 0.55rem;
  }

  .btn-confirm-cancel,
  .btn-confirm-execute {
    min-height: 44px;
    padding: 0.7rem 0.9rem;
    font-size: 0.82rem;
  }

  /* Toasts Placed Above Bottom Tabs */
  .toast-container {
    bottom: calc(56px + env(safe-area-inset-bottom, 0px) + 0.5rem);
    left: 0.75rem;
    right: 0.75rem;
    max-width: calc(100vw - 1.5rem);
    align-items: center;
  }

  .toast {
    max-width: 100%;
    width: 100%;
    padding: 0.65rem 0.95rem;
  }

  /* Debug HUD on Mobile */
  .debug-hud {
    bottom: auto;
    top: calc(90px + env(safe-area-inset-top, 0px));
    right: 0.75rem;
  }
}

/* --------------------------------------------------------------------------
   Small Smartphone Screens (max-width: 480px)
   -------------------------------------------------------------------------- */
@media (max-width: 480px) {
  .header-container {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "brand actions"
      "stats stats"
      "epoch paradigm";
    gap: 0.35rem;
  }

  .resource-stats {
    justify-content: space-around;
    padding: 0.2rem 0.5rem;
  }

  .era-pill-name {
    max-width: 110px;
  }

  .paradigm-badge-name {
    max-width: 105px;
  }
}

/* --------------------------------------------------------------------------
   Ultra-Narrow Screens (max-width: 380px)
   -------------------------------------------------------------------------- */
@media (max-width: 380px) {
  .btn-tab {
    font-size: 0.74rem;
    padding: 0.35rem 0.45rem;
  }

  .era-pill-name {
    max-width: 85px;
  }

  .paradigm-badge-name {
    max-width: 85px;
  }
}

@keyframes float-up {
  0% { transform: translateY(0) scale(1); opacity: 1; }
  100% { transform: translateY(-40px) scale(1.2); opacity: 0; }
}

/* ==========================================================================
   LOCAL DEBUG HUD & CHEAT CONTROLS
   ========================================================================== */

.debug-hud {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 9999;
  font-family: var(--font-sans);
}

.debug-hud-panel {
  background: rgba(18, 24, 38, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(245, 158, 11, 0.4);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 15px rgba(245, 158, 11, 0.2);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  min-width: 220px;
  animation: fadeIn 0.2s ease-out;
}

.debug-hud-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 0.5rem;
}

.debug-hud-title {
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--warning);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.btn-debug-minimize {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.85rem;
  cursor: pointer;
  padding: 0.1rem 0.3rem;
  border-radius: 4px;
  transition: all var(--transition-fast);
}

.btn-debug-minimize:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.1);
}

.debug-hud-body {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.btn-debug-action {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #0a0e17;
  font-weight: 800;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(245, 158, 11, 0.35);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), filter var(--transition-fast);
}

.btn-debug-action:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.5);
  filter: brightness(1.1);
}

.btn-debug-action:active {
  transform: translateY(1px);
}

.debug-hud-shortcut {
  font-size: 0.68rem;
  color: var(--text-dim);
  text-align: center;
}

.debug-hud-shortcut code {
  background: rgba(255, 255, 255, 0.08);
  padding: 0.1rem 0.3rem;
  border-radius: 3px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.debug-hud-badge-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(18, 24, 38, 0.9);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(245, 158, 11, 0.5);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4), 0 0 10px rgba(245, 158, 11, 0.25);
  border-radius: var(--radius-xl);
  padding: 0.4rem 0.75rem;
  color: var(--warning);
  font-weight: 800;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.debug-hud-badge-btn:hover {
  transform: scale(1.05);
  border-color: var(--warning);
  box-shadow: 0 4px 20px rgba(245, 158, 11, 0.4);
}

/* ==========================================================================
   HELP & HOW-TO-PLAY MODAL DIALOG
   ========================================================================== */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(8, 12, 20, 0.82);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-dialog {
  background: var(--bg-surface);
  border: 1px solid var(--border-glow);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.75), var(--accent-glow);
  border-radius: var(--radius-xl);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: scale(0.94) translateY(12px);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.active .modal-dialog {
  transform: scale(1) translateY(0);
}

.modal-header {
  padding: 1.2rem 1.5rem;
  background: var(--bg-surface-elevated);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.modal-header-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.modal-logo {
  font-size: 1.8rem;
  line-height: 1;
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

.modal-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

.btn-modal-close {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.95rem;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.btn-modal-close:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--accent-primary);
  transform: scale(1.08);
}

.modal-body {
  padding: 1.35rem 1.5rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.help-section {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.help-heading {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-primary);
  font-weight: 800;
}

.help-text {
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--text-muted);
}

.help-text strong {
  color: var(--text-main);
}

.help-steps-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

@media (max-width: 580px) {
  .help-steps-grid {
    grid-template-columns: 1fr;
  }
}

.help-step-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.75rem 0.85rem;
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
}

.help-step-icon {
  font-size: 1.25rem;
  line-height: 1;
  padding: 0.4rem;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.help-step-content {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.help-step-content strong {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-main);
}

.help-step-content p {
  font-size: 0.74rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.modal-footer {
  padding: 1.1rem 1.5rem;
  background: var(--bg-surface-elevated);
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
}

.btn-modal-primary {
  background: var(--accent-gradient);
  color: #000;
  border: none;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 0.9rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3), var(--accent-glow);
  width: 100%;
}

.btn-modal-primary:hover {
  opacity: 0.95;
  transform: translateY(-1px);
  filter: brightness(1.08);
}

.btn-modal-primary:active {
  transform: translateY(0);
}

/* ==========================================================================
   PARADOX-STYLE HISTORICAL EVENT POPUP MODAL
   ========================================================================== */

.event-modal-overlay {
  z-index: 10050; /* Higher than normal modals */
}

.event-modal-dialog {
  max-width: 680px;
  border: 1px solid var(--accent-primary);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.85), var(--accent-glow);
  position: relative;
  background: var(--bg-surface);
}

.event-modal-header {
  padding: 1.1rem 1.5rem;
  background: var(--bg-surface-elevated);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.event-badge-group {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.event-category-badge {
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-primary);
  font-family: var(--font-mono);
}

.event-epoch-pill {
  font-size: 0.68rem;
  font-weight: 800;
  background: var(--accent-primary);
  color: #000;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  white-space: nowrap;
}

.event-modal-body {
  padding: 1.4rem 1.6rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  max-height: 75vh;
  overflow-y: auto;
}

/* Event Hero Header */
.event-hero {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

.event-hero-icon-container {
  width: 58px;
  height: 58px;
  background: var(--bg-surface-elevated);
  border: 2px solid var(--accent-primary);
  box-shadow: var(--accent-glow);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.event-hero-icon {
  font-size: 2rem;
  line-height: 1;
}

.event-hero-titles {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.event-modal-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.event-modal-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* Event Narrative */
.event-narrative-box {
  background: var(--bg-surface-elevated);
  border-left: 4px solid var(--accent-primary);
  padding: 0.9rem 1.1rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  border-top: 1px solid var(--border-color);
  border-right: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.event-narrative-text {
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--text-main);
  font-weight: 400;
}

/* Historical Quote Card */
.event-quote-card {
  background: rgba(0, 0, 0, 0.35);
  border: 1px dashed var(--border-glow);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.event-quote-mark {
  font-size: 2.2rem;
  font-family: Georgia, serif;
  line-height: 0.8;
  color: var(--accent-primary);
  opacity: 0.7;
}

.event-quote-text {
  font-size: 0.88rem;
  font-style: italic;
  line-height: 1.5;
  color: #e2e8f0;
}

.event-quote-author {
  font-size: 0.78rem;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent-primary);
  text-align: right;
}

/* Event Footer & Paradox Action Button */
.event-modal-footer {
  padding: 1.25rem 1.6rem;
  background: var(--bg-surface-elevated);
  border-top: 1px solid var(--border-color);
}

.btn-event-action {
  font-size: 0.96rem;
  padding: 0.85rem 1.5rem;
  letter-spacing: 0.02em;
  background: var(--accent-gradient);
  color: #000;
  font-weight: 800;
}

@media (max-width: 600px) {
  .event-hero {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .event-hero-icon-container {
    width: 48px;
    height: 48px;
  }

  .event-hero-icon {
    font-size: 1.6rem;
  }

  .event-modal-title {
    font-size: 1.15rem;
  }

  .event-modal-body {
    padding: 1rem 1.1rem;
    gap: 1rem;
  }
}

/* ==========================================
   AI PARADIGM CYCLES & REPLAYABILITY (v1.7.0)
   ========================================== */

/* Unified Active Paradigm & Restart Header Button */
.active-paradigm-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.35rem 0.85rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  font-family: var(--font-sans);
  text-align: left;
  outline: none;
  flex-shrink: 0;
  min-width: 0;
}

.active-paradigm-badge:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--accent-primary);
  box-shadow: var(--accent-glow);
  transform: translateY(-1px);
}

.active-paradigm-badge:active {
  transform: translateY(0);
}

.active-paradigm-badge.paradigm-shift-ready {
  border-color: var(--border-glow);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.25), 0 0 10px var(--border-glow);
}

.active-paradigm-badge.paradigm-shift-ready:hover {
  border-color: var(--accent-primary);
  box-shadow: var(--accent-glow);
}

.paradigm-badge-icon {
  font-size: 1.15rem;
  line-height: 1;
  flex-shrink: 0;
}

.paradigm-badge-info {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
  min-width: 0;
  overflow: hidden;
}

.paradigm-badge-label {
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--accent-primary);
  white-space: nowrap;
}

.paradigm-badge-name {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Paradigm Shift Modal Dialog */
.paradigm-modal-dialog {
  max-width: 860px;
  width: 95%;
  background: var(--bg-surface);
  border: 1px solid var(--border-glow);
  box-shadow: 0 25px 70px rgba(0, 0, 0, 0.85), 0 0 45px rgba(168, 85, 247, 0.25);
  border-radius: var(--radius-lg);
}

.paradigm-singularity-badge {
  background: rgba(168, 85, 247, 0.15);
  border: 1px solid rgba(168, 85, 247, 0.45);
  color: #e879f9;
}

.paradigm-epoch-pill {
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.4);
  color: #fbbf24;
}

.paradigm-hero {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

.paradigm-hero-icon-container {
  width: 58px;
  height: 58px;
  background: var(--bg-surface-elevated);
  border: 2px solid #a855f7;
  box-shadow: 0 0 20px rgba(168, 85, 247, 0.4);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.paradigm-hero-icon {
  font-size: 2rem;
  line-height: 1;
}

.paradigm-hero-text {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.paradigm-modal-title {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

.paradigm-modal-subtitle {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.45;
}

/* Paradigm Selection Container & 2x2 Grid */
.paradigm-selection-container {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.paradigm-2x2-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.85rem;
}

@media (max-width: 720px) {
  .paradigm-2x2-grid {
    grid-template-columns: 1fr;
  }
}

.paradigm-action-btn {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.95rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  cursor: pointer;
  text-align: left;
  transition: all var(--transition-fast);
  color: var(--text-main);
  font-family: var(--font-sans);
  position: relative;
  outline: none;
}

.paradigm-action-btn:hover {
  background: rgba(31, 41, 61, 0.95);
  border-color: var(--accent-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
}

.paradigm-action-btn.paradigm-symbolic:hover {
  border-color: #38bdf8;
  box-shadow: 0 0 20px rgba(56, 189, 248, 0.35);
}

.paradigm-action-btn.paradigm-connectionist:hover {
  border-color: #a855f7;
  box-shadow: 0 0 20px rgba(168, 85, 247, 0.35);
}

.paradigm-action-btn.paradigm-cybernetic:hover {
  border-color: #10b981;
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.35);
}

.paradigm-action-btn.paradigm-probabilistic:hover {
  border-color: #f59e0b;
  box-shadow: 0 0 20px rgba(245, 158, 11, 0.35);
}

.paradigm-btn-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.5rem;
}

.paradigm-btn-title-row {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.paradigm-btn-icon {
  font-size: 1.45rem;
  line-height: 1;
}

.paradigm-btn-title-group {
  display: flex;
  flex-direction: column;
}

.paradigm-btn-name {
  font-size: 0.92rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}

.paradigm-btn-subtitle {
  font-size: 0.72rem;
  color: var(--text-muted);
  line-height: 1.2;
  font-family: var(--font-mono);
}

.paradigm-speed-badge {
  font-size: 0.65rem;
  font-family: var(--font-mono);
  font-weight: 800;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.badge-buff {
  background: rgba(34, 197, 94, 0.15);
  border: 1px solid rgba(34, 197, 94, 0.4);
  color: #4ade80;
}

.badge-vanilla {
  background: rgba(148, 163, 184, 0.15);
  border: 1px solid rgba(148, 163, 184, 0.4);
  color: #cbd5e1;
}

.paradigm-btn-flavor {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.4;
  margin: 0;
}

.paradigm-btn-effects {
  background: rgba(0, 0, 0, 0.35);
  border: 1px dashed var(--border-glow);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.65rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.paradigm-effects-label {
  font-size: 0.64rem;
  font-family: var(--font-mono);
  font-weight: 800;
  color: #c084fc;
  letter-spacing: 0.05em;
}

.paradigm-effects-text {
  font-size: 0.76rem;
  color: var(--text-main);
  line-height: 1.35;
  font-weight: 600;
}

.paradigm-btn-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-primary);
  margin-top: auto;
  padding-top: 0.25rem;
}

.paradigm-btn-action-text {
  transition: transform var(--transition-fast);
}

.paradigm-action-btn:hover .paradigm-btn-action-text {
  transform: translateX(3px);
  color: #fff;
}

.paradigm-completed-badge {
  font-size: 0.68rem;
  color: #fbbf24;
  background: rgba(251, 191, 36, 0.15);
  border: 1px solid rgba(251, 191, 36, 0.35);
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-full);
}

/* 5th Vanilla Button */
.btn-paradigm-vanilla {
  width: 100%;
  margin-top: 0.75rem;
  border-color: rgba(148, 163, 184, 0.25);
  background: rgba(15, 23, 42, 0.6);
}

.btn-paradigm-vanilla:hover {
  border-color: #94a3b8;
  background: rgba(30, 41, 59, 0.8);
  box-shadow: 0 0 20px rgba(148, 163, 184, 0.25);
}

/* Civilization-Style Continuation Button */
.paradigm-footer-action-group {
  width: 100%;
}

.btn-civ-continue {
  width: 100%;
  padding: 0.95rem 1.4rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-align: center;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.25);
}

.btn-civ-main {
  font-size: 1.05rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.01em;
}

.btn-civ-sub {
  font-size: 0.76rem;
  color: var(--text-muted);
  font-weight: 500;
  font-family: var(--font-sans);
}

.btn-civ-continue:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--accent-primary);
  box-shadow: var(--accent-glow);
  transform: translateY(-1px);
}

.btn-civ-continue:active {
  transform: translateY(0);
}

/* Paradigm Confirmation Dialog */
.paradigm-confirm-dialog {
  max-width: 540px;
  width: 92%;
  background: var(--bg-surface);
  border: 1px solid var(--border-glow);
  box-shadow: 0 25px 70px rgba(0, 0, 0, 0.9), 0 0 40px rgba(168, 85, 247, 0.3);
  border-radius: var(--radius-lg);
}

.paradigm-confirm-badge {
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.4);
  color: #fbbf24;
}

.paradigm-confirm-hero {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.paradigm-confirm-icon {
  font-size: 2.2rem;
  line-height: 1;
  width: 52px;
  height: 52px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.paradigm-confirm-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 0.25rem;
}

.paradigm-confirm-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.45;
}

.paradigm-confirm-card {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(168, 85, 247, 0.35);
  border-radius: var(--radius-md);
  padding: 0.75rem 0.9rem;
}

.confirm-effects-header {
  font-size: 0.65rem;
  font-family: var(--font-mono);
  font-weight: 800;
  color: #c084fc;
  letter-spacing: 0.06em;
  margin-bottom: 0.25rem;
}

.confirm-effects-body {
  font-size: 0.8rem;
  color: var(--text-main);
  font-weight: 600;
  line-height: 1.4;
}

.paradigm-confirm-warning {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: #fbbf24;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.65rem;
}

.paradigm-confirm-footer {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  padding: 1rem 1.4rem;
  background: var(--bg-surface-elevated);
  border-top: 1px solid var(--border-color);
}

.paradigm-confirm-actions-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
  width: 100%;
}

@media (max-width: 520px) {
  .paradigm-confirm-actions-row {
    grid-template-columns: 1fr;
  }
}

.btn-confirm-cancel {
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid var(--border-glow);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.86rem;
  padding: 0.8rem 1rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  text-align: center;
  transition: all var(--transition-fast);
  width: 100%;
}

.btn-confirm-cancel:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.35);
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.1);
  transform: translateY(-1px);
  color: #fff;
}

.btn-confirm-cancel:active {
  transform: translateY(0);
}

.btn-confirm-execute {
  background: var(--accent-gradient);
  color: #000;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 0.86rem;
  padding: 0.8rem 1rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  text-align: center;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
  width: 100%;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.btn-confirm-execute:hover {
  filter: brightness(1.1);
  box-shadow: var(--accent-glow);
  transform: translateY(-1px);
}

.btn-confirm-execute:active {
  transform: translateY(0);
}

/* ==========================================================================
   PERSISTENCE & HARD RESET / PURGE CONTROLS
   ========================================================================== */

.btn-paradigm-purge {
  width: 100%;
  margin-top: 0.65rem;
  padding: 0.65rem 1rem;
  background: rgba(239, 68, 68, 0.08);
  border: 1px dashed rgba(239, 68, 68, 0.35);
  border-radius: var(--radius-md);
  color: #fca5a5;
  font-family: var(--font-sans);
  font-size: 0.76rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  transition: all var(--transition-fast);
}

.btn-paradigm-purge:hover {
  background: rgba(239, 68, 68, 0.18);
  border-color: rgba(239, 68, 68, 0.7);
  color: #fef2f2;
  box-shadow: 0 0 16px rgba(239, 68, 68, 0.25);
  transform: translateY(-1px);
}

.btn-paradigm-purge:active {
  transform: translateY(0);
}

.confirm-purge-option-container {
  width: 100%;
  margin-top: 0;
  display: flex;
  justify-content: center;
}

.btn-confirm-execute.btn-danger-purge {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  color: #ffffff;
  border-color: rgba(239, 68, 68, 0.8);
  box-shadow: 0 0 15px rgba(239, 68, 68, 0.35);
}

.btn-confirm-execute.btn-danger-purge:hover {
  background: linear-gradient(135deg, #f87171 0%, #ef4444 100%);
  box-shadow: 0 0 22px rgba(239, 68, 68, 0.55);
}

/* ==========================================================================
   MULTI-TAB CONFLICT & PROTECTION OVERLAY
   ========================================================================== */

.multi-tab-overlay {
  position: fixed;
  inset: 0;
  background: rgba(8, 10, 14, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.multi-tab-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.multi-tab-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-glow);
  border-radius: 16px;
  max-width: 480px;
  width: 100%;
  padding: 2.5rem 2rem;
  text-align: center;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), var(--accent-glow);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  animation: modalPopIn 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.multi-tab-icon {
  font-size: 3.5rem;
  line-height: 1;
  filter: drop-shadow(0 0 16px rgba(212, 175, 55, 0.4));
  animation: pulseGentle 2.5s infinite ease-in-out;
}

.multi-tab-title {
  font-family: var(--font-sans);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0;
  letter-spacing: -0.02em;
}

.multi-tab-desc {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin: 0;
}

.multi-tab-action {
  width: 100%;
  margin-top: 0.5rem;
}

.btn-resume-tab {
  width: 100%;
  padding: 0.95rem 1.5rem;
  background: var(--accent-gradient);
  color: #12100e;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 700;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3), var(--accent-glow);
}

.btn-resume-tab:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4), 0 0 25px rgba(212, 175, 55, 0.5);
  filter: brightness(1.1);
}

.btn-resume-tab:active {
  transform: translateY(0);
}