/* ========================================
   GPad Tester — Global Design System
   Dark Gaming Theme with Neon Accents
   ======================================== */

/* ---- Google Fonts ---- */
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600;700&display=swap");

/* ---- CSS Custom Properties ---- */
:root {
  /* Colors — Dark Theme (Default) */
  --bg-primary: #05070a; /* Deep midnight black */
  --bg-secondary: #090c14;
  --bg-surface: #0f141f;
  --bg-surface-light: #161b29;
  --bg-surface-elevated: #1c2333;
  --bg-hover: #222b40;

  --accent-cyan: #0891b2;
  --accent-cyan-light: #06b6d4;
  --accent-cyan-dark: #0e7490;
  --accent-purple: #8b5cf6;
  --accent-purple-light: #a78bfa;
  --accent-magenta: #ec4899;
  --accent-blue: #3b82f6;

  --success: #10b981;
  --success-light: #34d399;
  --warning: #f59e0b;
  --warning-light: #fbbf24;
  --danger: #ef4444;
  --danger-light: #f87171;

  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --text-inverse: #0a0e17;

  --border-color: rgba(255, 255, 255, 0.15); /* Increased from 0.08 to 0.15 */
  --border-color-light: rgba(255, 255, 255, 0.25); /* Increased from 0.15 to 0.25 */
  --border-color-active: rgba(6, 182, 212, 0.5); /* Increased from 0.4 to 0.5 */
  --border-heavy: rgba(255, 255, 255, 0.3); /* New heavy border for important cards */

  /* Glow Effects */
  --glow-cyan: 0 0 20px rgba(6, 182, 212, 0.4);
  --glow-cyan-strong:
    0 0 30px rgba(6, 182, 212, 0.6), 0 0 60px rgba(6, 182, 212, 0.2);
  --glow-purple: 0 0 20px rgba(139, 92, 246, 0.4);
  --glow-success: 0 0 20px rgba(16, 185, 129, 0.4);
  --glow-danger: 0 0 20px rgba(239, 68, 68, 0.4);

  /* Glassmorphism */
  --glass-bg: rgba(17, 24, 39, 0.7);
  --glass-bg-light: rgba(26, 31, 46, 0.6);
  --glass-border: rgba(255, 255, 255, 0.18); /* Increased from 0.1 to 0.18 */
  --glass-blur: blur(16px);

  /* Typography */
  --font-main:
    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-display:
    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-primary: var(--font-main);
  --font-mono: "JetBrains Mono", "Fira Code", "Cascadia Code", monospace;

  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-md: 1.125rem;
  --fs-lg: 1.25rem;
  --fs-xl: 1.5rem;
  --fs-2xl: 2rem;
  --fs-3xl: 2.5rem;
  --fs-4xl: 3rem;
  --fs-5xl: 3.75rem;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 16px 50px rgba(0, 0, 0, 0.6);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Layout */
  --container-max: 1200px;
  --container-narrow: 960px;
  --header-height: 70px;
}

/* ---- Light Theme ---- */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-surface: #f1f5f9;
  --bg-surface-light: #e2e8f0;
  --bg-surface-elevated: #ffffff;
  --bg-hover: #e2e8f0;

  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-inverse: #f9fafb;

  --border-color: rgba(0, 0, 0, 0.15);
  --border-color-light: rgba(0, 0, 0, 0.25);
  --border-color-active: rgba(6, 182, 212, 0.6);
  --border-heavy: rgba(0, 0, 0, 0.2);

  --glass-bg: rgba(255, 255, 255, 0.92);
  --glass-bg-light: rgba(241, 245, 249, 0.9);
  --glass-border: rgba(0, 0, 0, 0.12);

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12), 0 4px 8px rgba(0, 0, 0, 0.06);
  --shadow-xl: 0 16px 50px rgba(0, 0, 0, 0.15), 0 8px 16px rgba(0, 0, 0, 0.08);
}

/* Light mode specific overrides for better card readability */
[data-theme="light"] .glass-panel {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08), 0 1px 3px rgba(0, 0, 0, 0.06);
  border-color: rgba(0, 0, 0, 0.12);
}

[data-theme="light"] .glass-panel:hover {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12), 0 4px 8px rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .stat-card {
  background: #ffffff;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
  border-color: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .header {
  background: rgba(255, 255, 255, 0.92);
  border-bottom-color: rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .header__dropdown-menu {
  background: #ffffff;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .tool-card {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(241, 245, 249, 0.96));
  border-color: rgba(148, 163, 184, 0.28);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.95),
    0 14px 30px rgba(15, 23, 42, 0.08);
}

[data-theme="light"] .tool-card:hover,
[data-theme="light"] .tool-card:focus-visible {
  box-shadow:
    0 0 0 1px rgba(6, 182, 212, 0.12),
    0 18px 36px rgba(15, 23, 42, 0.12),
    0 8px 18px rgba(59, 130, 246, 0.08);
}

[data-theme="light"] .tool-card__icon {
  background: linear-gradient(
    135deg,
    rgba(6, 182, 212, 0.1),
    rgba(59, 130, 246, 0.08)
  );
  border-color: rgba(6, 182, 212, 0.22);
}

[data-theme="light"] .tool-card__desc {
  color: #475569;
}

/* ---- CSS Reset ---- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-main);
  font-size: var(--fs-base);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  min-height: 100vh;
}

p {
  font-size: 1.05rem; /* Slightly larger than base */
  line-height: 1.7;
}

a {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-cyan-light);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  outline: none;
}

input,
select,
textarea {
  font-family: inherit;
  outline: none;
}

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.025em;
}

/* ---- Layout Utilities ---- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container--narrow {
  max-width: var(--container-narrow);
}

.section {
  padding: var(--space-3xl) 0;
}

.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.grid {
  display: grid;
}

/* ---- Header / Navigation ---- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  z-index: 1000;
  transition: background var(--transition-base);
}



.header__inner {
  overflow: visible;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 800;
  font-size: 24px;
  font-family: var(--font-display);
  letter-spacing: -0.035em;
  color: var(--accent-cyan);
}

.header__logo:hover {
  color: var(--accent-cyan-light);
}

.header__logo-img {
  height: 55px;
  width: auto;
  display: block;
}

.header__logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.header__nav-link {
  color: var(--text-secondary);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.8rem;
  transition: all var(--transition-fast);
  white-space: nowrap;
  position: relative;
}

.header__nav-link:hover,
.header__nav-link--active {
  color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.08);
}

.header__nav-link--active::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--accent-cyan);
  border-radius: var(--radius-full);
}

/* Dropdown */
.header__dropdown {
  position: relative;
}

.header__dropdown-toggle {
  font-size: var(--fs-sm);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.header__dropdown-toggle::after {
  content: "\25BC";
  font-size: 10px;
  margin-top: 2px;
  opacity: 0.8;
  transition: transform var(--transition-fast);
}

.header__dropdown:hover .header__dropdown-toggle::after {
  transform: rotate(180deg);
}

.header__dropdown:focus-within .header__dropdown-toggle::after {
  transform: rotate(180deg);
}

.header__dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(5px);
  min-width: 420px;
  background:
    linear-gradient(180deg, rgba(22, 27, 41, 0.98), rgba(15, 20, 31, 0.98));
  border: 1px solid var(--border-color-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 14px;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  z-index: 100;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  align-items: start;
  overflow: hidden;
  isolation: isolate;
}

.header__dropdown-menu::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at top, rgba(6, 182, 212, 0.12), transparent 52%),
    linear-gradient(135deg, rgba(139, 92, 246, 0.08), transparent 45%);
  pointer-events: none;
  opacity: 0.9;
  z-index: -1;
}

.header__dropdown:hover .header__dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.header__dropdown:focus-within .header__dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* Category labels in dropdown */
.header__dropdown-label {
  grid-column: 1 / -1;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  padding: 8px 12px 4px;
  font-weight: 700;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 2px;
}

.header__dropdown-label:not(:first-child) {
  margin-top: 6px;
}

/* Nav badges (POPULAR, NEW) */
.nav-badge {
  font-size: 9px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  line-height: 1;
  margin-left: auto;
}

.nav-badge--popular {
  background: rgba(6, 182, 212, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(6, 182, 212, 0.3);
}

.nav-badge--new {
  background: rgba(139, 92, 246, 0.15);
  color: var(--accent-purple-light);
  border: 1px solid rgba(139, 92, 246, 0.3);
}

.header__dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 10px 12px;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  font-size: var(--fs-sm);
  font-weight: 500;
  transition: all var(--transition-fast);
}

.header__dropdown-item:focus-visible {
  outline: 2px solid rgba(6, 182, 212, 0.7);
  outline-offset: 2px;
  color: var(--text-primary);
  background: rgba(6, 182, 212, 0.08);
}

.header__dropdown-item:hover {
  color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.08);
  transform: translateX(4px);
}

.header__dropdown-item-icon {
  font-size: 16px;
  width: 20px;
  text-align: center;
}

/* Header Actions */
.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.header__theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--bg-surface-light);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.header__theme-toggle:hover {
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
  box-shadow: var(--glow-cyan);
}

/* Mobile Hamburger */
.header__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  padding: 8px;
}

.header__hamburger span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.header__hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.header__hamburger.active span:nth-child(2) {
  opacity: 0;
}

.header__hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ---- Glass Panel Component ---- */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(1.2);
  -webkit-backdrop-filter: blur(20px) saturate(1.2);
  border: 2px solid var(--border-heavy);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    inset 0 0 0 1px rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-base);
  position: relative;
}

/* Subtle grain texture overlay */
.glass-panel::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
}

.glass-panel > * {
  position: relative;
  z-index: 1;
}

.glass-panel:hover,
.glass-panel--hover:hover {
  border-color: var(--border-color-active);
  box-shadow:
    var(--shadow-md),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  transform: translateY(-4px);
  background: var(--bg-surface-elevated);
}

/* ---- Neon Buttons ---- */
.neon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px 24px;
  font-weight: 600;
  font-size: var(--fs-sm);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  border: 1px solid transparent;
}

.neon-btn:active {
  transform: scale(0.96) translateY(0);
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
}

.neon-btn::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.neon-btn:hover::before {
  opacity: 1;
}

/* Primary */
.neon-btn--primary {
  background: linear-gradient(
    135deg,
    var(--accent-cyan),
    var(--accent-cyan-dark)
  );
  color: var(--text-inverse);
  border-color: var(--accent-cyan);
}

.neon-btn--primary:hover {
  box-shadow: var(--glow-cyan-strong);
  transform: translateY(-2px);
  color: var(--text-inverse);
}

.neon-btn--primary:active {
  transform: scale(0.96) translateY(0);
  box-shadow: 0 0 5px rgba(6, 182, 212, 0.4);
}

/* Secondary */
.neon-btn--secondary {
  background: transparent;
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
}

.neon-btn--secondary:hover {
  background: rgba(6, 182, 212, 0.1);
  box-shadow: var(--glow-cyan);
  color: var(--accent-cyan-light);
}

.neon-btn--secondary:active {
  transform: scale(0.96);
  background: rgba(6, 182, 212, 0.2);
}

/* Purple */
.neon-btn--purple {
  background: linear-gradient(135deg, var(--accent-purple), #7c3aed);
  color: white;
  border-color: var(--accent-purple);
}

.neon-btn--purple:hover {
  box-shadow: var(--glow-purple);
  transform: translateY(-2px);
}

.neon-btn--purple:active {
  transform: scale(0.96) translateY(0);
  box-shadow: 0 0 5px rgba(124, 58, 237, 0.4);
}

/* Danger */
.neon-btn--danger {
  background: transparent;
  color: var(--danger);
  border-color: var(--danger);
}

.neon-btn--danger:hover {
  background: rgba(239, 68, 68, 0.1);
  box-shadow: var(--glow-danger);
}

.neon-btn--danger:active {
  transform: scale(0.96);
  background: rgba(239, 68, 68, 0.2);
}

/* Ghost */
.neon-btn--ghost {
  background: var(--bg-surface-light);
  color: var(--text-secondary);
  border-color: var(--border-color);
}

.neon-btn--ghost:hover {
  color: var(--text-primary);
  border-color: var(--border-color-light);
  background: var(--bg-hover);
}

.neon-btn--ghost:active {
  transform: scale(0.96);
  background: var(--bg-surface);
}

.neon-btn--ghost.active {
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.1);
}

/* Small button */
.neon-btn--sm {
  padding: 8px 16px;
  font-size: var(--fs-xs);
}

/* Large button */
.neon-btn--lg {
  padding: 16px 32px;
  font-size: var(--fs-base);
}

/* ---- Stat Card ---- */
.stat-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  text-align: center;
  transition: all var(--transition-fast);
}

.stat-card__value {
  font-family: var(--font-mono);
  font-size: var(--fs-2xl);
  font-weight: 700;
  color: var(--accent-cyan);
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.stat-card__label {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.stat-card--success .stat-card__value {
  color: var(--success);
}
.stat-card--warning .stat-card__value {
  color: var(--warning);
}
.stat-card--danger .stat-card__value {
  color: var(--danger);
}
.stat-card--purple .stat-card__value {
  color: var(--accent-purple);
}

/* ---- Range Slider ---- */
.range-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--bg-surface-light);
  outline: none;
  transition: background var(--transition-fast);
}

.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent-cyan);
  cursor: pointer;
  border: 2px solid var(--bg-primary);
  box-shadow: var(--glow-cyan);
  transition: all var(--transition-fast);
}

.range-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  box-shadow: var(--glow-cyan-strong);
}

.range-slider::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent-cyan);
  cursor: pointer;
  border: 2px solid var(--bg-primary);
  box-shadow: var(--glow-cyan);
}

/* ---- Toggle Switch ---- */
.toggle-switch {
  position: relative;
  width: 48px;
  height: 26px;
  cursor: pointer;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-switch__slider {
  position: absolute;
  inset: 0;
  background: var(--bg-surface-light);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.toggle-switch__slider::before {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--text-secondary);
  top: 2px;
  left: 2px;
  transition: all var(--transition-base);
}

.toggle-switch input:checked + .toggle-switch__slider {
  background: rgba(6, 182, 212, 0.2);
  border-color: var(--accent-cyan);
}

.toggle-switch input:checked + .toggle-switch__slider::before {
  transform: translateX(22px);
  background: var(--accent-cyan);
  box-shadow: var(--glow-cyan);
}

/* ---- Badge ---- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  font-size: var(--fs-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge--success {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success-light);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge--warning {
  background: rgba(245, 158, 11, 0.15);
  color: var(--warning-light);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge--danger {
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger-light);
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge--cyan {
  background: rgba(6, 182, 212, 0.15);
  color: var(--accent-cyan-light);
  border: 1px solid rgba(6, 182, 212, 0.3);
}

.badge--dot::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* ---- Input Fields ---- */
.input-field {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--fs-sm);
  transition: all var(--transition-fast);
}

.input-field:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.1);
}

.input-field::placeholder {
  color: var(--text-muted);
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.input-group__label {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--text-secondary);
}

/* ---- Select ---- */
.select-field {
  padding: 10px 36px 10px 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--fs-sm);
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3E%3Cpath stroke='%239ca3af' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3E%3C/svg%3E");
  background-position: right 10px center;
  background-repeat: no-repeat;
  background-size: 20px;
  transition: all var(--transition-fast);
}

.select-field:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.1);
}

/* ---- Tool Card (Homepage) ---- */
.tool-card {
  background:
    linear-gradient(180deg, rgba(28, 35, 51, 0.8), rgba(15, 20, 31, 0.98));
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-decoration: none;
  color: var(--text-primary);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  isolation: isolate;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  min-height: 100%;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.04),
    0 14px 30px rgba(0, 0, 0, 0.18);
}

/* Animated gradient border shimmer */
.tool-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 1.5px;
  background: linear-gradient(
    135deg,
    rgba(6, 182, 212, 0.5),
    transparent 40%,
    rgba(139, 92, 246, 0.5) 60%,
    transparent
  );
  background-size: 300% 300%;
  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.tool-card > * {
  position: relative;
  z-index: 1;
}

/* Top accent bar (always visible subtle) */
.tool-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
  opacity: 0;
  transition: opacity var(--transition-base);
}

.tool-card:hover {
  border-color: transparent;
  box-shadow: var(--glow-cyan), var(--shadow-lg);
  transform: translateY(-6px) scale(1.01);
  color: var(--text-primary);
}

.tool-card:focus-visible {
  border-color: transparent;
  box-shadow: var(--glow-cyan), var(--shadow-lg);
  transform: translateY(-6px) scale(1.01);
  outline: 2px solid rgba(6, 182, 212, 0.65);
  outline-offset: 3px;
}

.tool-card:hover::before {
  opacity: 1;
  animation: borderShimmer 3s ease infinite;
}

.tool-card:focus-visible::before {
  opacity: 1;
  animation: borderShimmer 3s ease infinite;
}

.tool-card:hover::after {
  opacity: 1;
}

.tool-card:focus-visible::after {
  opacity: 1;
}

@keyframes borderShimmer {
  0%   { background-position: 0% 0%; }
  50%  { background-position: 100% 100%; }
  100% { background-position: 0% 0%; }
}

.tool-card__icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  background: linear-gradient(
    135deg,
    rgba(6, 182, 212, 0.15),
    rgba(139, 92, 246, 0.15)
  );
  border: 1px solid rgba(6, 182, 212, 0.2);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.tool-card:hover .tool-card__icon {
  transform: scale(1.1);
  box-shadow: 0 0 16px rgba(6, 182, 212, 0.25);
}

.tool-card__title {
  font-size: var(--fs-lg);
  font-weight: 700;
  font-family: var(--font-display);
}

.tool-card__desc {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  line-height: 1.5;
  flex-grow: 1;
}

.tool-card__cta {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--transition-fast), letter-spacing var(--transition-fast);
}

.tool-card:hover .tool-card__cta {
  gap: 8px;
  letter-spacing: 0.5px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple), var(--accent-cyan));
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: ctaShimmer 2s linear infinite;
}

.tool-card:focus-visible .tool-card__cta {
  gap: 8px;
  letter-spacing: 0.5px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple), var(--accent-cyan));
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: ctaShimmer 2s linear infinite;
}

@keyframes ctaShimmer {
  0%   { background-position: 0% center; }
  100% { background-position: 200% center; }
}

/* ---- Chart Container ---- */
.chart-container {
  position: relative;
  width: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
}

.chart-container canvas {
  display: block;
  width: 100%;
  height: auto;
}

/* ---- Controller SVG Container ---- */
.controller-svg {
  position: relative;
  max-width: 600px;
  margin: 0 auto;
}

.controller-svg svg {
  width: 100%;
  height: auto;
}

.controller-svg .btn-active {
  fill: var(--accent-cyan);
  filter: drop-shadow(0 0 8px rgba(6, 182, 212, 0.6));
  transition: all 100ms ease;
}

.controller-svg .trigger-fill {
  transition: all 50ms ease;
}

/* ---- Status Indicator ---- */
.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: var(--space-md);
  font-size: var(--fs-base);
  font-weight: 600;
  padding: 8px 24px;
  background: var(--bg-surface-elevated);
  border-radius: 50px;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.status-indicator__dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  position: relative;
}

.status-indicator__dot::after {
  content: "";
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  border: 2px solid currentColor;
  opacity: 0.3;
}

.status-indicator--connected .status-indicator__dot {
  background: var(--success);
  color: var(--success);
  box-shadow: var(--glow-success);
  animation: pulse-green 2s ease-in-out infinite;
}

.status-indicator--disconnected .status-indicator__dot {
  background: var(--danger);
  color: var(--danger);
  box-shadow: var(--glow-danger);
  animation: pulse-red 2s ease-in-out infinite;
}

.status-indicator--connecting .status-indicator__dot {
  background: var(--warning);
  color: var(--warning);
  animation: pulse-yellow 1.5s ease-in-out infinite;
}

@keyframes pulse-red {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.4);
  }
  50% {
    box-shadow: 0 0 0 10px rgba(239, 68, 68, 0);
  }
}

@keyframes pulse-green {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4);
  }
  50% {
    box-shadow: 0 0 0 8px rgba(16, 185, 129, 0);
  }
}

@keyframes pulse-yellow {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.4);
  }
  50% {
    box-shadow: 0 0 0 8px rgba(245, 158, 11, 0);
  }
}

/* ---- Progress Bar ---- */
.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--bg-surface-light);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar__fill {
  height: 100%;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
  transition: width var(--transition-base);
}

/* ---- Tabs ---- */
.tabs {
  display: flex;
  gap: 2px;
  background: var(--bg-surface);
  padding: 4px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.tabs__tab {
  flex: 1;
  padding: 10px 16px;
  background: transparent;
  color: var(--text-secondary);
  font-weight: 600;
  font-size: var(--fs-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  text-align: center;
}

.tabs__tab:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}

.tabs__tab.active {
  background: var(--accent-cyan);
  color: var(--text-inverse);
  box-shadow: var(--glow-cyan);
}

/* ---- Footer ---- */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer__brand p {
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  margin-top: var(--space-md);
  line-height: 1.6;
}

.footer__title {
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: var(--space-md);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer__link {
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--accent-cyan);
}

.footer__bottom {
  border-top: 1px solid var(--border-color);
  padding-top: var(--space-xl);
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  color: var(--text-muted);
  font-size: var(--fs-sm);
  text-align: center;
}

.footer__socials {
  display: flex;
  gap: var(--space-md);
}

.footer__social-link {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 16px;
  transition: all var(--transition-fast);
}

.footer__social-link:hover {
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
  box-shadow: var(--glow-cyan);
}

/* ---- Tool Page Layout ---- */
.tool-page {
  padding-top: calc(var(--header-height) + var(--space-md));
  min-height: 100vh;
}

.tool-page__header {
  text-align: center;
  margin-bottom: var(--space-md);
}

.tool-page__icon {
  font-size: 48px;
  margin-bottom: 8px;
}

.tool-page__title {
  font-size: var(--fs-2xl);
  font-weight: 800;
  margin-bottom: 4px;
  background: linear-gradient(135deg, var(--text-primary), var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tool-page__desc {
  font-size: var(--fs-md);
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto;
}

.tool-page__panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
}

.tool-page__panel > * {
  min-width: 0;
  overflow: hidden;
}

.tool-page__controls {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.tool-page__visualization {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-surface-light);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ---- Animations / Keyframes ---- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes glowPulse {
  0%,
  100% {
    box-shadow: 0 0 10px rgba(6, 182, 212, 0.3);
  }
  50% {
    box-shadow: 0 0 25px rgba(6, 182, 212, 0.6);
  }
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

.animate-fade-in {
  animation: fadeIn 0.4s ease forwards;
}

.animate-glow {
  animation: glowPulse 2s ease-in-out infinite;
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

/* Staggered entrance */
.stagger > * {
  opacity: 0;
  animation: fadeInUp 0.5s ease forwards;
}

.stagger > *:nth-child(1) {
  animation-delay: 0.05s;
}
.stagger > *:nth-child(2) {
  animation-delay: 0.1s;
}
.stagger > *:nth-child(3) {
  animation-delay: 0.15s;
}
.stagger > *:nth-child(4) {
  animation-delay: 0.2s;
}
.stagger > *:nth-child(5) {
  animation-delay: 0.25s;
}
.stagger > *:nth-child(6) {
  animation-delay: 0.3s;
}
.stagger > *:nth-child(7) {
  animation-delay: 0.35s;
}
.stagger > *:nth-child(8) {
  animation-delay: 0.4s;
}
.stagger > *:nth-child(9) {
  animation-delay: 0.45s;
}
.stagger > *:nth-child(10) {
  animation-delay: 0.5s;
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }

  .tool-page__panel {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --fs-3xl: 2rem;
    --fs-4xl: 2.5rem;
    --fs-5xl: 3rem;
  }

  .header__nav {
    display: flex;
    position: absolute;
    top: calc(100% + 10px);
    right: var(--space-md);
    left: auto;
    width: 220px;
    height: auto;
    max-height: calc(100vh - var(--header-height) - 40px);
    background: var(--bg-surface);
    flex-direction: column;
    padding: var(--space-sm);
    gap: 0;
    z-index: 999;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s ease;
  }

  .header__nav.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .header__nav-link {
    font-size: var(--fs-base);
    padding: var(--space-md);
    border-radius: var(--radius-md);
  }

  .hide-mobile {
    display: none !important;
  }

  .header__hamburger {
    display: flex;
  }

  .header__nav.active .header__dropdown-menu {
    opacity: 1;
    visibility: visible;
  }

  .header__dropdown-menu,
  .header__dropdown:hover .header__dropdown-menu {
    position: static;
    transform: none;
    box-shadow: none;
    border: none;
    background: transparent;
    border-radius: 0;
    margin-top: var(--space-xs);
    padding: 0;
    display: flex;
    flex-direction: column;
    min-width: 100%;
  }

  .header__dropdown-menu::before {
    display: none;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .footer__bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }

  .container {
    padding: 0 var(--space-md);
  }

  .section {
    padding: var(--space-2xl) 0;
  }

  .glass-panel {
    padding: var(--space-lg);
  }
}

@media (max-width: 480px) {
  :root {
    --fs-3xl: 1.75rem;
    --fs-2xl: 1.5rem;
  }

  .header__logo {
    font-size: 1.15rem;
  }

  .header__logo-img {
    height: 42px;
  }

  .header__logo span {
    line-height: 1.1;
    max-width: 100px;
  }

  .neon-btn {
    padding: 10px 18px;
    font-size: var(--fs-xs);
  }
}

/* ---- Utility Classes ---- */
.text-center {
  text-align: center;
}
.text-mono {
  font-family: var(--font-mono);
}
.text-cyan {
  color: var(--accent-cyan);
}
.text-purple {
  color: var(--accent-purple);
}
.text-success {
  color: var(--success);
}
.text-warning {
  color: var(--warning);
}
.text-danger {
  color: var(--danger);
}
.text-muted {
  color: var(--text-muted);
}
.text-sm {
  font-size: var(--fs-sm);
}
.text-xs {
  font-size: var(--fs-xs);
}
.font-bold {
  font-weight: 700;
}
.font-mono {
  font-family: var(--font-mono);
}
.mt-sm {
  margin-top: var(--space-sm);
}
.mt-md {
  margin-top: var(--space-md);
}
.mt-lg {
  margin-top: var(--space-lg);
}
.mt-xl {
  margin-top: var(--space-xl);
}
.mb-sm {
  margin-bottom: var(--space-sm);
}
.mb-md {
  margin-bottom: var(--space-md);
}
.mb-lg {
  margin-bottom: var(--space-lg);
}
.mb-xl {
  margin-bottom: var(--space-xl);
}
.gap-sm {
  gap: var(--space-sm);
}
.gap-md {
  gap: var(--space-md);
}
.gap-lg {
  gap: var(--space-lg);
}
.hidden {
  display: none !important;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* ===== Disabled Buttons ===== */
.neon-btn:disabled, .neon-btn[disabled] {
  opacity: 0.35;
  cursor: not-allowed;
  pointer-events: none;
  filter: grayscale(0.5);
}

/* ===== Toast Notifications ===== */
#toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 10000;
  display: flex;
  flex-direction: column-reverse;
  gap: 8px;
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  border-radius: 12px;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--text-primary);
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  box-shadow: 0 8px 24px rgba(0,0,0,0.25);
  opacity: 0;
  transform: translateX(100%);
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: auto;
  backdrop-filter: blur(12px);
}

.toast--visible {
  opacity: 1;
  transform: translateX(0);
}

.toast--exit {
  animation: toastExit 0.3s ease-in forwards;
}

@keyframes toastExit {
  to { opacity: 0; transform: translateX(100%) scale(0.95); }
}

.toast__icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  flex-shrink: 0;
}

.toast--success { border-color: var(--success); }
.toast--success .toast__icon { background: var(--success); }
.toast--info { border-color: var(--accent-cyan); }
.toast--info .toast__icon { background: var(--accent-cyan); }
.toast--warning { border-color: var(--warning); }
.toast--warning .toast__icon { background: var(--warning); color: #000; }
.toast--error { border-color: var(--danger); }
.toast--error .toast__icon { background: var(--danger); }

.toast__msg { white-space: nowrap; }

/* ---- Accessibility: Reduced Motion ---- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  html {
    scroll-behavior: auto;
  }

  .glass-panel:hover,
  .glass-panel--hover:hover {
    transform: none;
  }

  .neon-btn:hover,
  .neon-btn:active,
  .neon-btn--primary:hover,
  .neon-btn--primary:active,
  .neon-btn--purple:hover,
  .neon-btn--purple:active {
    transform: none;
  }

  .header__dropdown-item:hover {
    transform: none;
  }

  .status-indicator__dot {
    animation: none;
  }
}


/* ---- Table Styles ---- */
.table-responsive-wrapper {
  overflow-x: auto;
  margin-bottom: var(--space-xl);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
  color: var(--text-primary);
  min-width: 600px; /* Ensure it scrolls nicely on small screens */
}

.article-table th,
.article-table td {
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--border-color);
}

.article-table th {
  background-color: var(--bg-surface-elevated);
  color: var(--accent-cyan);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.article-table tbody tr {
  transition: background-color var(--transition-fast);
}

.article-table tbody tr:hover {
  background-color: var(--bg-hover);
}

.article-table tbody tr:last-child td {
  border-bottom: none;
}

/* ---- Language Switcher ---- */
.lang-switcher {
  position: relative;
  margin-right: var(--space-sm);
}

.lang-switcher__toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--bg-surface-light);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: var(--fs-xs);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.lang-switcher__toggle:hover {
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.08);
}

.lang-switcher__icon {
  font-size: 16px;
}

.lang-switcher__dropdown {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 160px;
  max-height: 320px;
  overflow-y: auto;
  background: var(--bg-surface);
  border: 1px solid var(--border-color-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--space-xs);
  opacity: 0;
  visibility: hidden;
  transform: translateY(4px);
  transition: all var(--transition-fast);
  z-index: 1001;
}

.lang-switcher:hover .lang-switcher__dropdown,
.lang-switcher.open .lang-switcher__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-switcher__item {
  display: block;
  padding: 8px 12px;
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.lang-switcher__item:hover {
  color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.08);
}

.lang-switcher__item--active {
  color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.12);
  font-weight: 600;
}

/* Scrollbar for language dropdown */
.lang-switcher__dropdown::-webkit-scrollbar {
  width: 4px;
}

.lang-switcher__dropdown::-webkit-scrollbar-track {
  background: transparent;
}

.lang-switcher__dropdown::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 2px;
}

@media (max-width: 768px) {
  .lang-switcher__current {
    display: none;
  
  font-size: 0.8rem;
}
  .lang-switcher__toggle {
    padding: 6px 8px;
  }
}

/* ---- Language Availability Bar ---- */
.lang-availability-bar {
  background: var(--bg-surface-light);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  padding: var(--space-md) 0;
  text-align: center;
}

.lang-availability-bar__langs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-size: 15px;
  font-weight: 600;
  line-height: 2;
  color: var(--text-muted); /* Color of the | separator */
}

.lang-availability-bar__link {
  color: #a52a2a; /* Dark red/brown color matching screenshot style, adjust if needed to stick to theme */
  text-decoration: none;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

[data-theme="dark"] .lang-availability-bar__link {
  color: #df8888; /* Lighter red for dark mode */
}

/* Current active language styling */
.lang-availability-bar__link--active {
  color: var(--accent-cyan);
  pointer-events: none; /* Make it unclickable */
  font-weight: 800;
}

[data-theme="dark"] .lang-availability-bar__link--active {
  color: #00e5ff; /* Bright cyan for dark mode */
}

.lang-availability-bar__link:hover {
  text-decoration: underline;
}


/* Dropdown collapse on mobile */
@media (max-width: 768px) {
  .header__dropdown-menu {
    grid-template-columns: 1fr;
    min-width: 260px;
    padding: 10px;
  }

  .header__dropdown-label {
    padding: 6px 10px 3px;
  }
}