/* ═══════════════════════════════════════════════════════════════════
   OS VAULT — style.css
   Theme: Cool White × Gold Flakes × Liquid Glass × 3D Parallax
   ═══════════════════════════════════════════════════════════════════ */

/* ─── DESIGN TOKENS ─────────────────────────────────────────────── */
:root {
  /* Gold palette */
  --gold-100: #FFF8E1;
  --gold-200: #FFE57F;
  --gold-300: #FFD740;
  --gold-400: #D4AF37;
  --gold-500: #B8960C;
  --gold-600: #8B6914;
  --gold-glow: rgba(212,175,55,0.45);
  --gold-flake: rgba(212,175,55,0.18);

  /* Cool white palette */
  --white-pure: #FFFFFF;
  --white-cool: #F0F4FF;
  --white-glass: rgba(255,255,255,0.72);
  --white-glass-2: rgba(255,255,255,0.42);
  --white-glass-3: rgba(255,255,255,0.18);

  /* Deep backgrounds */
  --bg-deep: #050810;
  --bg-mid: #090D1A;
  --bg-near: #0E1427;
  --bg-card: rgba(12,17,35,0.72);

  /* Status */
  --alive: #22D66A;
  --dead:  #FF3B5C;
  --check: #FFD740;

  /* Glass surface */
  --glass-bg: rgba(255,255,255,0.07);
  --glass-bg-hover: rgba(255,255,255,0.13);
  --glass-border: rgba(255,255,255,0.18);
  --glass-border-gold: rgba(212,175,55,0.38);
  --glass-shadow: 0 8px 40px rgba(0,0,0,0.55), 0 0 0 1px rgba(255,255,255,0.07);
  --glass-shadow-hover: 0 20px 70px rgba(0,0,0,0.65), 0 0 0 1px rgba(212,175,55,0.22), 0 0 40px rgba(212,175,55,0.08);
  --glass-blur: blur(24px) saturate(180%);

  /* Typography */
  --font-display: 'Cinzel', serif;
  --font-ui:      'Rajdhani', sans-serif;
  --font-body:    'Outfit', sans-serif;
  --font-mono:    'DM Mono', monospace;

  /* Motion */
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in:     cubic-bezier(0.7, 0, 0.84, 0);
  --ease-silk:   cubic-bezier(0.25, 0.46, 0.45, 0.94);

  /* Layout */
  --header-h: 72px;
  --nav-h: 52px;
  --card-radius: 18px;
  --section-gap: 80px;

  /* Text colors (dark mode default) */
  --text-primary:   #F0F4FF;
  --text-secondary: rgba(240,244,255,0.68);
  --text-muted:     rgba(240,244,255,0.38);
  --text-gold:      var(--gold-400);
}

/* ─── LIGHT MODE ─────────────────────────────────────────────────── */
@media (prefers-color-scheme: light) {
  :root {
    --bg-deep:   #EDF0FA;
    --bg-mid:    #E4E9F7;
    --bg-near:   #D8DFF2;
    --bg-card:   rgba(255,255,255,0.75);
    --glass-bg:  rgba(255,255,255,0.62);
    --glass-bg-hover: rgba(255,255,255,0.88);
    --glass-border: rgba(0,0,0,0.09);
    --glass-border-gold: rgba(180,140,20,0.32);
    --glass-shadow: 0 8px 40px rgba(0,0,0,0.12), 0 0 0 1px rgba(255,255,255,0.8);
    --glass-shadow-hover: 0 20px 70px rgba(0,0,0,0.16), 0 0 0 1px rgba(212,175,55,0.28);
    --text-primary:   #0A0D1C;
    --text-secondary: rgba(10,13,28,0.68);
    --text-muted:     rgba(10,13,28,0.38);
    --white-glass: rgba(255,255,255,0.88);
    --white-glass-2: rgba(255,255,255,0.65);
    --white-glass-3: rgba(255,255,255,0.38);
    --gold-flake: rgba(212,175,55,0.25);
  }
}

[data-theme="light"] {
  --bg-deep:   #EDF0FA;
  --bg-mid:    #E4E9F7;
  --bg-near:   #D8DFF2;
  --bg-card:   rgba(255,255,255,0.75);
  --glass-bg:  rgba(255,255,255,0.62);
  --glass-bg-hover: rgba(255,255,255,0.88);
  --glass-border: rgba(0,0,0,0.09);
  --text-primary:   #0A0D1C;
  --text-secondary: rgba(10,13,28,0.68);
  --text-muted:     rgba(10,13,28,0.38);
}

/* ─── GLOBAL RESET ───────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-body);
  background: var(--bg-deep);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  cursor: default;
}

img { display: block; max-width: 100%; }
a   { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }
ul, ol { list-style: none; }

/* ─── SCROLLBAR ──────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--gold-400), var(--gold-600));
  border-radius: 99px;
}

/* ─── SELECTION ──────────────────────────────────────────────────── */
::selection {
  background: var(--gold-flake);
  color: var(--text-primary);
}

/* ─── PARTICLE CANVAS ────────────────────────────────────────────── */
#vault-particles {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.75;
}

/* ─── PARALLAX SCENE ─────────────────────────────────────────────── */
.parallax-scene {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.parallax-layer {
  position: absolute;
  inset: -20%;
  background-repeat: repeat;
  will-change: transform;
}

.layer-deep {
  background:
    radial-gradient(ellipse 120% 80% at 10% 20%, rgba(212,175,55,0.06) 0%, transparent 60%),
    radial-gradient(ellipse 80% 60% at 90% 80%, rgba(100,120,255,0.05) 0%, transparent 55%),
    radial-gradient(ellipse 60% 40% at 50% 50%, rgba(212,175,55,0.03) 0%, transparent 60%);
  animation: layerDrift 28s ease-in-out infinite alternate;
}

.layer-mid {
  background:
    radial-gradient(circle 300px at 30% 60%, rgba(212,175,55,0.05) 0%, transparent 70%),
    radial-gradient(circle 200px at 70% 30%, rgba(180,200,255,0.04) 0%, transparent 70%);
  animation: layerDrift 18s ease-in-out infinite alternate-reverse;
}

.layer-near {
  background:
    radial-gradient(circle 150px at 80% 70%, rgba(212,175,55,0.07) 0%, transparent 70%),
    radial-gradient(circle 100px at 20% 40%, rgba(212,175,55,0.05) 0%, transparent 70%);
  animation: layerDrift 12s ease-in-out infinite alternate;
}

@keyframes layerDrift {
  from { transform: translate3d(-2%, -2%, 0) scale(1.04); }
  to   { transform: translate3d(2%, 2%, 0) scale(1); }
}

/* ─── HEADER ─────────────────────────────────────────────────────── */
.vault-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--header-h);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border-gold);
  box-shadow: 0 1px 0 rgba(212,175,55,0.12), 0 4px 32px rgba(0,0,0,0.35);
  transition: background 0.4s var(--ease-silk), box-shadow 0.4s var(--ease-silk);
}

.vault-header.scrolled {
  background: rgba(9,13,26,0.82);
  box-shadow: 0 1px 0 rgba(212,175,55,0.2), 0 8px 48px rgba(0,0,0,0.55);
}

@media (prefers-color-scheme: light) {
  .vault-header.scrolled {
    background: rgba(228,233,247,0.88);
  }
}

.header-inner {
  max-width: 1680px;
  margin: 0 auto;
  height: 100%;
  padding: 0 28px;
  display: flex;
  align-items: center;
  gap: 24px;
}

/* Logo */
.vault-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.logo-icon {
  width: 42px; height: 42px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--gold-300), var(--gold-500));
  border-radius: 10px;
  box-shadow: 0 0 20px var(--gold-glow);
  color: #0A0D1C;
  font-size: 18px;
  flex-shrink: 0;
  animation: logoGlow 4s ease-in-out infinite;
}

@keyframes logoGlow {
  0%, 100% { box-shadow: 0 0 20px var(--gold-glow); }
  50%       { box-shadow: 0 0 36px rgba(212,175,55,0.7), 0 0 60px rgba(212,175,55,0.25); }
}

.logo-text {
  display: flex; flex-direction: column; line-height: 1;
}

.logo-name {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.08em;
}

.logo-accent {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  background: linear-gradient(90deg, var(--gold-300), var(--gold-500));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.08em;
}

.logo-tagline {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-top: 3px;
}

/* Tools strip */
.tools-strip {
  display: flex;
  gap: 10px;
  margin-left: auto;
}

.tool-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px 8px 14px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border-gold);
  border-radius: 10px;
  backdrop-filter: blur(12px);
  color: var(--text-primary);
  transition: background 0.25s var(--ease-silk), transform 0.2s var(--ease-spring), box-shadow 0.25s;
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
}

.tool-btn:hover {
  background: var(--glass-bg-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px var(--gold-glow);
  border-color: var(--gold-400);
}

.tool-btn > .fa-usb,
.tool-btn > .fa-hard-drive {
  color: var(--gold-400);
  font-size: 16px;
}

.tool-info {
  display: flex; flex-direction: column; line-height: 1.1;
}

.tool-name {
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.tool-version {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.06em;
}

.tool-dl {
  color: var(--gold-400);
  font-size: 13px;
  margin-left: 2px;
}

/* Stats */
.vault-stats {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.stat {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
}

.stat .fa-layer-group { color: var(--gold-400); }

.stat-div {
  width: 1px; height: 18px;
  background: var(--glass-border);
}

/* ─── SECTION NAV ────────────────────────────────────────────────── */
.section-nav {
  position: fixed;
  top: var(--header-h);
  left: 0; right: 0;
  z-index: 90;
  height: var(--nav-h);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: 0 4px 24px rgba(0,0,0,0.2);
}

.nav-inner {
  max-width: 1680px;
  margin: 0 auto;
  height: 100%;
  padding: 0 28px;
  display: flex;
  align-items: center;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
}

.nav-inner::-webkit-scrollbar { display: none; }

.nav-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  border-radius: 8px;
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid transparent;
  white-space: nowrap;
  transition: all 0.2s var(--ease-silk);
  position: relative;
  overflow: hidden;
}

.nav-btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--gold-flake), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.nav-btn:hover {
  color: var(--text-primary);
  background: var(--glass-bg);
  border-color: var(--glass-border);
}

.nav-btn:hover::after { opacity: 1; }

.nav-btn.active {
  color: var(--gold-400);
  background: var(--glass-bg);
  border-color: var(--glass-border-gold);
  box-shadow: 0 0 16px rgba(212,175,55,0.12);
}

.nav-btn.active::after { opacity: 1; }

.nav-btn i { font-size: 15px; }

/* ─── MAIN CONTENT ───────────────────────────────────────────────── */
.vault-main {
  position: relative;
  z-index: 10;
  max-width: 1680px;
  margin: 0 auto;
  padding: calc(var(--header-h) + var(--nav-h) + 48px) 28px 80px;
}

/* ─── OS SECTION ─────────────────────────────────────────────────── */
.os-section {
  margin-bottom: var(--section-gap);
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

.os-section.visible {
  opacity: 1;
  transform: none;
}

/* Section header */
.section-header {
  margin-bottom: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.section-title-row {
  display: flex;
  align-items: center;
  gap: 14px;
}

.section-icon {
  font-size: 28px;
  color: var(--gold-400);
  filter: drop-shadow(0 0 10px var(--gold-glow));
}

.section-h2 {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 0.06em;
  background: linear-gradient(90deg, var(--text-primary) 0%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 22px;
  padding: 0 8px;
  background: var(--gold-flake);
  border: 1px solid var(--glass-border-gold);
  border-radius: 99px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--gold-400);
  letter-spacing: 0.05em;
}

/* Section divider line */
.section-h2::after {
  content: '';
  display: block;
}

/* Filter rows */
.filter-row,
.subfilter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-btn, .subfilter-btn {
  padding: 6px 14px;
  border-radius: 8px;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  transition: all 0.2s var(--ease-silk);
  backdrop-filter: blur(8px);
}

.filter-btn:hover, .subfilter-btn:hover {
  color: var(--text-primary);
  border-color: var(--glass-border-gold);
}

.filter-btn.active, .subfilter-btn.active {
  color: var(--gold-400);
  background: linear-gradient(135deg, rgba(212,175,55,0.14), rgba(212,175,55,0.06));
  border-color: var(--gold-400);
  box-shadow: 0 0 12px rgba(212,175,55,0.15);
}

.subfilter-row {
  padding-left: 12px;
  border-left: 2px solid var(--glass-border-gold);
}

.subfilter-btn {
  padding: 4px 12px;
  font-size: 12px;
}

/* ─── CARDS GRID ─────────────────────────────────────────────────── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

@media (min-width: 1800px) {
  .cards-grid { grid-template-columns: repeat(5, 1fr); }
}

@media (max-width: 1280px) {
  .cards-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 900px) {
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 540px) {
  .cards-grid { grid-template-columns: 1fr; }
}

/* ─── ISO CARD ───────────────────────────────────────────────────── */
.iso-card {
  position: relative;
  border-radius: var(--card-radius);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--glass-shadow);
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.35s var(--ease-spring), box-shadow 0.35s var(--ease-silk), border-color 0.3s;
  will-change: transform;
  animation: cardEntrance 0.6s var(--ease-out) both;
}

@keyframes cardEntrance {
  from { opacity:0; transform:translateY(28px) scale(0.96); }
  to   { opacity:1; transform:none; }
}

/* Stagger animation on children */
.iso-card:nth-child(1)  { animation-delay: 0.05s; }
.iso-card:nth-child(2)  { animation-delay: 0.10s; }
.iso-card:nth-child(3)  { animation-delay: 0.15s; }
.iso-card:nth-child(4)  { animation-delay: 0.20s; }
.iso-card:nth-child(5)  { animation-delay: 0.25s; }
.iso-card:nth-child(6)  { animation-delay: 0.30s; }
.iso-card:nth-child(7)  { animation-delay: 0.35s; }
.iso-card:nth-child(8)  { animation-delay: 0.40s; }

/* Gold shimmer overlay */
.iso-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    transparent 0%,
    rgba(212,175,55,0.06) 40%,
    transparent 60%,
    rgba(212,175,55,0.04) 100%
  );
  opacity: 0;
  transition: opacity 0.4s;
  pointer-events: none;
  z-index: 1;
}

/* Sweep shimmer on hover */
.iso-card::after {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255,255,255,0.07),
    transparent
  );
  transform: skewX(-20deg);
  transition: left 0.6s var(--ease-silk);
  pointer-events: none;
  z-index: 2;
}

.iso-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--glass-shadow-hover);
  border-color: var(--glass-border-gold);
}

.iso-card:hover::before { opacity: 1; }
.iso-card:hover::after  { left: 120%; }

/* 3D tilt via JS — applied as CSS vars */
.iso-card {
  transform-style: preserve-3d;
  perspective: 800px;
}

/* Card inner */
.card-inner {
  position: relative;
  z-index: 3;
  padding: 18px 18px 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  height: 100%;
}

/* Card top */
.card-top {
  display: flex;
  align-items: center;
  gap: 12px;
}

.card-logo-wrap {
  width: 52px; height: 52px;
  flex-shrink: 0;
  border-radius: 12px;
  overflow: hidden;
  background: var(--white-glass-3);
  border: 1px solid var(--glass-border);
  display: flex; align-items: center; justify-content: center;
  position: relative;
}

.card-logo-wrap::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 12px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.25);
  pointer-events: none;
}

.card-logo {
  width: 36px; height: 36px;
  object-fit: contain;
  filter: drop-shadow(0 2px 6px rgba(0,0,0,0.3));
  transition: transform 0.3s var(--ease-spring);
}

.iso-card:hover .card-logo { transform: scale(1.1) rotate(-4deg); }

.card-title-block {
  flex: 1;
  min-width: 0;
}

.card-os-name {
  font-family: var(--font-ui);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.2;
}

.card-version {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--gold-400);
  letter-spacing: 0.08em;
  margin-top: 3px;
}

/* Status dot */
.card-status {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--check);
  flex-shrink: 0;
  position: relative;
}

.card-status.alive {
  background: var(--alive);
  box-shadow: 0 0 8px rgba(34,214,106,0.6);
  animation: statusPulse 2.5s ease-in-out infinite;
}

.card-status.dead  { background: var(--dead); box-shadow: 0 0 6px rgba(255,59,92,0.5); }
.card-status.check { background: var(--check); animation: statusBlink 1s step-end infinite; }

@keyframes statusPulse {
  0%, 100% { box-shadow: 0 0 8px rgba(34,214,106,0.6); }
  50%       { box-shadow: 0 0 16px rgba(34,214,106,0.9), 0 0 28px rgba(34,214,106,0.3); }
}

@keyframes statusBlink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.3; }
}

/* Card divider */
.card-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--glass-border-gold), transparent);
}

/* Card meta */
.card-meta {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.card-meta-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.4;
}

.card-meta-item i {
  color: var(--gold-400);
  font-size: 11px;
  margin-top: 2px;
  flex-shrink: 0;
  width: 12px;
  text-align: center;
}

.card-meta-label {
  font-weight: 600;
  color: var(--text-muted);
  flex-shrink: 0;
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-family: var(--font-mono);
  width: 52px;
}

.card-meta-val {
  color: var(--text-secondary);
  flex: 1;
}

/* Card actions */
.card-actions {
  display: flex;
  gap: 8px;
  margin-top: auto;
}

.card-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 9px 10px;
  border-radius: 10px;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: all 0.22s var(--ease-spring);
  position: relative;
  overflow: hidden;
}

.card-btn-primary {
  background: linear-gradient(135deg, var(--gold-400), var(--gold-500));
  color: #0A0D1C;
  box-shadow: 0 4px 16px rgba(212,175,55,0.3);
}

.card-btn-primary:hover {
  background: linear-gradient(135deg, var(--gold-300), var(--gold-400));
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(212,175,55,0.5);
}

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

.card-btn-secondary {
  background: var(--glass-bg);
  color: var(--text-primary);
  border: 1px solid var(--glass-border-gold);
}

.card-btn-secondary:hover {
  background: var(--glass-bg-hover);
  border-color: var(--gold-400);
  transform: translateY(-2px);
}

.card-btn-expand {
  flex: 0;
  width: 38px;
  height: 38px;
  padding: 0;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
  border-radius: 10px;
  font-size: 13px;
}

.card-btn-expand:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-gold);
  color: var(--gold-400);
}

/* Prev count badge on expand button */
.card-prev-badge {
  position: absolute;
  top: -5px; right: -5px;
  background: var(--gold-400);
  color: #0A0D1C;
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 600;
  min-width: 16px;
  height: 16px;
  border-radius: 99px;
  display: flex; align-items: center; justify-content: center;
  padding: 0 4px;
  pointer-events: none;
}

/* ─── LINUX DISTRO TREE ──────────────────────────────────────────── */
.distro-tree {
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.distro-family {
  border-radius: 16px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(16px);
  overflow: hidden;
}

.distro-family-header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  background: linear-gradient(90deg, rgba(212,175,55,0.08), transparent);
  border-bottom: 1px solid var(--glass-border);
  cursor: pointer;
  transition: background 0.2s;
}

.distro-family-header:hover {
  background: linear-gradient(90deg, rgba(212,175,55,0.14), transparent);
}

.distro-family-logo {
  width: 32px; height: 32px;
  object-fit: contain;
  filter: drop-shadow(0 2px 6px rgba(0,0,0,0.3));
}

.distro-family-name {
  font-family: var(--font-ui);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text-primary);
}

.distro-family-desc {
  font-family: var(--font-body);
  font-size: 12px;
  color: var(--text-muted);
  margin-left: auto;
}

.distro-family-toggle {
  color: var(--gold-400);
  font-size: 13px;
  transition: transform 0.3s var(--ease-silk);
}

.distro-family.collapsed .distro-family-toggle {
  transform: rotate(-90deg);
}

.distro-family-grid {
  padding: 20px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  transition: max-height 0.5s var(--ease-out), opacity 0.4s, padding 0.4s;
}

@media (min-width: 1800px) {
  .distro-family-grid { grid-template-columns: repeat(5, 1fr); }
}

@media (max-width: 1280px) {
  .distro-family-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 900px) {
  .distro-family-grid { grid-template-columns: repeat(2, 1fr); }
}

.distro-family.collapsed .distro-family-grid {
  max-height: 0 !important;
  opacity: 0;
  padding-top: 0;
  padding-bottom: 0;
  overflow: hidden;
}

/* ─── MODAL ──────────────────────────────────────────────────────── */
.card-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(12px, 3vw, 32px);
  pointer-events: none;
  opacity: 0;
  /* NO transform on this container — keeps position:fixed viewport-relative */
  transition: opacity 0.3s var(--ease-silk);
}

.card-modal.open {
  pointer-events: all;
  opacity: 1;
}
/* modal-frame open state handled by effects.css */

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(5,8,16,0.72);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  cursor: pointer;
}

.modal-frame {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: min(680px, 96vw);
  /* Compact: never taller than viewport minus nav */
  max-height: min(82vh, 720px);
  display: flex;
  flex-direction: column;
  border-radius: 18px;
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border-gold);
  box-shadow:
    0 24px 64px rgba(0,0,0,0.75),
    0 0 0 1px rgba(212,175,55,0.12),
    0 0 48px rgba(212,175,55,0.06);
  overflow: hidden;
  /* transform/transition handled by effects.css */
}

/* Scrollable area is only the content, not the whole frame */
.modal-scroll-area {
  overflow-y: auto;
  overflow-x: hidden;
  flex: 1;
  min-height: 0;
  scrollbar-width: thin;
  scrollbar-color: var(--gold-600) transparent;
}

.card-modal.open .modal-frame {
  transform: none;
}

.modal-close {
  position: absolute;
  top: 12px; right: 12px;
  z-index: 10;
  width: 32px; height: 32px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s var(--ease-spring);
}

.modal-close:hover {
  background: rgba(255,59,92,0.15);
  border-color: rgba(255,59,92,0.4);
  color: var(--dead);
  transform: rotate(90deg);
}

.modal-card {
  display: flex;
  flex-direction: column;
  min-height: 0;
}

/* Scroll area: this is what actually scrolls, not the frame */
.modal-scroll-area {
  overflow-y: auto;
  overflow-x: hidden;
  flex: 1;
  min-height: 0;
  scrollbar-width: thin;
  scrollbar-color: rgba(212,175,55,0.3) transparent;
}

.modal-scroll-area::-webkit-scrollbar { width: 4px; }
.modal-scroll-area::-webkit-scrollbar-track { background: transparent; }
.modal-scroll-area::-webkit-scrollbar-thumb {
  background: rgba(212,175,55,0.3);
  border-radius: 4px;
}

.modal-main {
  display: flex;
  gap: 20px;
  padding: 22px 22px 14px;
  align-items: flex-start;
}

/* Responsive: stack on narrow viewports */
@media (max-width: 520px) {
  .modal-main { flex-direction: column; align-items: center; text-align: center; }
  .modal-badges-row { justify-content: center; }
  .modal-actions-row { justify-content: center; }
}

.modal-logo-wrap {
  position: relative;
  flex-shrink: 0;
}

.modal-logo {
  width: 72px; height: 72px;
  object-fit: contain;
  border-radius: 14px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: 8px;
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 4px 12px rgba(0,0,0,0.4));
}

.modal-logo-halo {
  position: absolute;
  inset: -8px;
  border-radius: 26px;
  background: radial-gradient(ellipse at center, var(--gold-flake), transparent 70%);
  animation: haloGlow 3s ease-in-out infinite;
  z-index: 0;
}

@keyframes haloGlow {
  0%, 100% { opacity: 0.6; transform: scale(0.95); }
  50%       { opacity: 1;   transform: scale(1.05); }
}

.modal-info { flex: 1; min-width: 0; }

.modal-badges-row {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-bottom: 10px;
}

.badge {
  padding: 3px 10px;
  border-radius: 99px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  font-weight: 500;
  text-transform: uppercase;
  border: 1px solid;
}

.badge-category { background: rgba(212,175,55,0.12); border-color: rgba(212,175,55,0.4); color: var(--gold-400); }
.badge-type     { background: rgba(100,160,255,0.1);  border-color: rgba(100,160,255,0.3); color: #6FA3FF; }
.badge-arch     { background: rgba(100,255,180,0.08); border-color: rgba(100,255,180,0.25); color: #5DFFC2; }

.modal-os-title {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text-primary);
  margin-bottom: 6px;
  line-height: 1.2;
}

.modal-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 16px;
}

.modal-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.modal-meta-item i { color: var(--gold-400); font-size: 11px; }
.modal-meta-item span { color: var(--text-secondary); }

/* Requirements block */
.modal-req-block {
  margin-bottom: 16px;
  padding: 14px 16px;
  border-radius: 12px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
}

.modal-req-title {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold-400);
  margin-bottom: 10px;
}

.modal-req-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 6px 16px;
}

.req-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 12px;
  color: var(--text-secondary);
}

.req-item i { color: var(--text-muted); font-size: 11px; width: 12px; text-align: center; }

/* Similar block */
.modal-similar-block {
  margin-bottom: 16px;
}

.modal-similar-title {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.similar-chips {
  display: flex; flex-wrap: wrap; gap: 6px;
}

.similar-chip {
  padding: 4px 12px;
  border-radius: 99px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--text-secondary);
  transition: all 0.2s;
  cursor: pointer;
}

.similar-chip:hover {
  border-color: var(--glass-border-gold);
  color: var(--gold-400);
  background: var(--glass-bg-hover);
}

/* Modal action row */
.modal-actions-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.modal-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 11px;
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: all 0.22s var(--ease-spring);
}

.modal-btn-download {
  background: linear-gradient(135deg, var(--gold-400), var(--gold-600));
  color: #0A0D1C;
  box-shadow: 0 4px 20px rgba(212,175,55,0.35);
}

.modal-btn-download:hover {
  background: linear-gradient(135deg, var(--gold-300), var(--gold-500));
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(212,175,55,0.55);
}

.modal-btn-page {
  background: var(--glass-bg);
  color: var(--text-primary);
  border: 1px solid var(--glass-border-gold);
}

.modal-btn-page:hover {
  background: var(--glass-bg-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(212,175,55,0.15);
}

.modal-status-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 11px 16px;
  border-radius: 11px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.status-alive { background: rgba(34,214,106,0.1); border: 1px solid rgba(34,214,106,0.3); color: var(--alive); }
.status-dead  { background: rgba(255,59,92,0.1);  border: 1px solid rgba(255,59,92,0.3);  color: var(--dead);  }
.status-check { background: rgba(255,215,64,0.1); border: 1px solid rgba(255,215,64,0.3); color: var(--check); }

/* ─── SCROLL SECTION (PREVIOUS VERSIONS) ────────────────────────── */
.scroll-section {
  border-top: 1px solid var(--glass-border);
  padding-top: 20px;
}

.scroll-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 12px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: all 0.25s var(--ease-silk);
  cursor: pointer;
}

.scroll-toggle:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-gold);
  color: var(--gold-400);
}

.scroll-toggle i { color: var(--gold-400); font-size: 16px; }

.scroll-toggle-count {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 24px; height: 20px; padding: 0 6px;
  background: var(--gold-flake);
  border: 1px solid var(--glass-border-gold);
  border-radius: 99px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--gold-400);
  letter-spacing: 0.06em;
}

.scroll-chevron {
  margin-left: auto;
  transition: transform 0.35s var(--ease-silk);
}

.scroll-toggle[aria-expanded="true"] .scroll-chevron {
  transform: rotate(180deg);
}

/* The actual scroll parchment roll */
.scroll-container {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.65s var(--ease-out);
  margin-top: 12px;
}

.scroll-container.open {
  max-height: 1200px;
}

.scroll-parchment {
  border-radius: 12px;
  background: linear-gradient(180deg,
    rgba(212,175,55,0.05) 0%,
    var(--glass-bg) 8%,
    var(--glass-bg) 92%,
    rgba(212,175,55,0.05) 100%
  );
  border: 1px solid var(--glass-border-gold);
  overflow: hidden;
  transform-origin: top center;
  animation: none;
}

.scroll-container.open .scroll-parchment {
  animation: scrollUnroll 0.65s var(--ease-out) forwards;
}

@keyframes scrollUnroll {
  from {
    clip-path: inset(0 0 100% 0 round 12px);
    opacity: 0;
  }
  to {
    clip-path: inset(0 0 0% 0 round 12px);
    opacity: 1;
  }
}

/* Roll caps (decorative cylinders top and bottom) */
.roll-cap {
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 0;
  background: linear-gradient(90deg,
    rgba(212,175,55,0.08),
    rgba(212,175,55,0.18) 20%,
    rgba(212,175,55,0.22) 50%,
    rgba(212,175,55,0.18) 80%,
    rgba(212,175,55,0.08)
  );
  border-bottom: 1px solid rgba(212,175,55,0.22);
}

.roll-bottom { border-top: 1px solid rgba(212,175,55,0.22); border-bottom: none; }

.roll-cylinder {
  width: 100%;
  height: 100%;
  background: repeating-linear-gradient(
    90deg,
    transparent 0px,
    transparent 18px,
    rgba(212,175,55,0.08) 18px,
    rgba(212,175,55,0.08) 19px
  );
}

/* Scroll body — previous versions list */
.scroll-body {
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.prev-version-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 14px;
  border-radius: 10px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  transition: all 0.2s var(--ease-silk);
  animation: prevRowEntrance 0.3s var(--ease-out) both;
}

@keyframes prevRowEntrance {
  from { opacity:0; transform: translateX(-12px); }
  to   { opacity:1; transform: none; }
}

.prev-version-row:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-gold);
}

.prev-version-num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--gold-400);
  letter-spacing: 0.06em;
  flex-shrink: 0;
  min-width: 80px;
}

.prev-version-date {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  flex-shrink: 0;
}

.prev-version-arch {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  flex-shrink: 0;
}

.prev-version-actions {
  display: flex;
  gap: 7px;
  margin-left: auto;
  align-items: center;
}

.prev-status {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.prev-status.alive { background: var(--alive); box-shadow: 0 0 6px rgba(34,214,106,0.5); }
.prev-status.dead  { background: var(--dead); }
.prev-status.check { background: var(--check); animation: statusBlink 1s step-end infinite; }

.prev-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 11px;
  border-radius: 7px;
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: all 0.18s var(--ease-spring);
}

.prev-btn-dl {
  background: linear-gradient(135deg, var(--gold-400), var(--gold-500));
  color: #0A0D1C;
  box-shadow: 0 2px 10px rgba(212,175,55,0.3);
}

.prev-btn-dl:hover {
  background: linear-gradient(135deg, var(--gold-300), var(--gold-400));
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(212,175,55,0.5);
}

.prev-btn-page {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
}

.prev-btn-page:hover {
  border-color: var(--glass-border-gold);
  color: var(--gold-400);
}

/* ─── LOADER ─────────────────────────────────────────────────────── */
.vault-loader {
  position: fixed;
  inset: 0;
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-deep);
  transition: opacity 0.6s var(--ease-silk), visibility 0.6s;
}

.vault-loader.done {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.loader-icon-wrap {
  position: relative;
  width: 80px; height: 80px;
  display: flex; align-items: center; justify-content: center;
}

.loader-icon {
  font-size: 36px;
  color: var(--gold-400);
  filter: drop-shadow(0 0 16px var(--gold-glow));
  animation: loaderIconPulse 2s ease-in-out infinite;
}

@keyframes loaderIconPulse {
  0%, 100% { filter: drop-shadow(0 0 16px var(--gold-glow)); transform: scale(1); }
  50%       { filter: drop-shadow(0 0 32px rgba(212,175,55,0.9)); transform: scale(1.1); }
}

.loader-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid transparent;
  border-top-color: var(--gold-400);
  border-right-color: rgba(212,175,55,0.3);
  animation: loaderSpin 1.2s linear infinite;
}

@keyframes loaderSpin {
  to { transform: rotate(360deg); }
}

.loader-wordmark {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 900;
  letter-spacing: 0.12em;
  color: var(--text-primary);
}

.loader-wordmark span {
  background: linear-gradient(90deg, var(--gold-300), var(--gold-500));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.loader-track {
  width: 240px;
  height: 3px;
  border-radius: 99px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  overflow: hidden;
}

.loader-fill {
  height: 100%;
  width: 0%;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--gold-500), var(--gold-300), var(--gold-500));
  background-size: 200% 100%;
  transition: width 0.3s var(--ease-silk);
  animation: shimmerTrack 2s linear infinite;
}

@keyframes shimmerTrack {
  from { background-position: 200% 0; }
  to   { background-position: -200% 0; }
}

.loader-status {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* ─── EMPTY STATE ────────────────────────────────────────────────── */
.empty-state {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 64px 24px;
  color: var(--text-muted);
}

.empty-state i { font-size: 40px; color: var(--gold-flake); }

.empty-state p {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ─── TOOLTIP ────────────────────────────────────────────────────── */
[data-tip] {
  position: relative;
}

[data-tip]::before {
  content: attr(data-tip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  background: rgba(9,13,26,0.92);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  padding: 5px 10px;
  border-radius: 6px;
  border: 1px solid var(--glass-border);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s;
  z-index: 99;
}

[data-tip]:hover::before { opacity: 1; }

/* ─── FOCUS VISIBLE ──────────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--gold-400);
  outline-offset: 3px;
}

/* ─── RESPONSIVE ─────────────────────────────────────────────────── */
@media (max-width: 900px) {
  :root { --header-h: 60px; --nav-h: 48px; }

  .header-inner { padding: 0 16px; gap: 12px; }
  .vault-stats  { display: none; }
  .logo-accent  { display: none; }
  .vault-main   { padding-left: 16px; padding-right: 16px; }

  .modal-main { flex-direction: column; }
  .modal-frame { max-height: 92vh; }
  .modal-req-grid { grid-template-columns: 1fr; }
  .distro-family-grid { grid-template-columns: repeat(2,1fr); }
}

@media (max-width: 540px) {
  .tools-strip { display: none; }
  .section-h2 { font-size: 22px; }
  .distro-family-grid { grid-template-columns: 1fr; }
  .modal-card { padding: 18px; }
}

/* ─── GOLD FLAKES OVERLAY ────────────────────────────────────────── */
.gold-flake-layer {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  overflow: hidden;
}

.gold-flake-particle {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle, var(--gold-300) 0%, transparent 70%);
  pointer-events: none;
  animation: flakeFall linear infinite;
  will-change: transform, opacity;
}

@keyframes flakeFall {
  0%   { transform: translateY(-10px) rotate(0deg); opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 0.6; }
  100% { transform: translateY(110vh) rotate(720deg); opacity: 0; }
}

/* FA icon fallback when image fails or no logo URL exists */
.card-logo-fa {
  width: 36px;
  height: 36px;
  font-size: 26px;
  color: var(--gold-400);
  align-items: center;
  justify-content: center;
  filter: drop-shadow(0 2px 6px rgba(0,0,0,0.3));
  transition: transform 0.3s var(--ease-spring);
  flex-shrink: 0;
}

.iso-card:hover .card-logo-fa { transform: scale(1.1) rotate(-4deg); }

.modal-logo-fa-fallback {
  font-size: 52px;
  color: var(--gold-400);
  width: 96px;
  height: 96px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 18px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 4px 16px rgba(212,175,55,0.3));
}
.iso-card[style*="--rx"] {
  transform:
    perspective(800px)
    rotateX(var(--rx, 0deg))
    rotateY(var(--ry, 0deg))
    translateZ(0)
    translateY(var(--ty, 0px));
}

/* ─── TOOL GROUP & PANEL ─────────────────────────────────────────── */
.tool-group { position: relative; }

.tool-btn-trigger {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border-gold);
  border-radius: 10px;
  backdrop-filter: blur(12px);
  color: var(--text-primary);
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.25s var(--ease-silk), transform 0.2s var(--ease-spring), box-shadow 0.25s;
  white-space: nowrap;
}

.tool-btn-trigger:hover,
.tool-btn-trigger[aria-expanded="true"] {
  background: var(--glass-bg-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px var(--gold-glow);
  border-color: var(--gold-400);
}

.tool-btn-trigger > .fa-usb,
.tool-btn-trigger > .fa-hard-drive { color: var(--gold-400); font-size: 16px; }

.tool-chevron {
  color: var(--text-muted);
  font-size: 11px;
  margin-left: 2px;
  transition: transform 0.3s var(--ease-silk);
}
.tool-btn-trigger[aria-expanded="true"] .tool-chevron { transform: rotate(180deg); }

.tool-panel {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  z-index: 300;
  min-width: 300px;
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border-gold);
  border-radius: 16px;
  box-shadow: 0 24px 60px rgba(0,0,0,0.6), 0 0 0 1px rgba(212,175,55,0.1);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px) scale(0.97);
  transition: opacity 0.25s var(--ease-silk), transform 0.25s var(--ease-spring), visibility 0.25s;
  pointer-events: none;
}
.tool-panel.open {
  opacity: 1;
  visibility: visible;
  transform: none;
  pointer-events: all;
}

.tool-panel-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--glass-border);
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.04em;
}
.tool-panel-header i { color: var(--gold-400); font-size: 15px; }

.tool-panel-tag {
  margin-left: auto;
  padding: 2px 8px;
  border-radius: 99px;
  background: linear-gradient(135deg, rgba(212,175,55,0.2), rgba(212,175,55,0.08));
  border: 1px solid var(--glass-border-gold);
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--gold-400);
  letter-spacing: 0.08em;
}

.tool-panel-downloads {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
#rufus-panel .tool-panel-downloads { grid-template-columns: repeat(2, 1fr); }

.tool-dl-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  padding: 12px 8px;
  border-radius: 10px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  text-align: center;
  text-decoration: none;
  transition: all 0.2s var(--ease-spring);
  cursor: pointer;
}
.tool-dl-btn:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-gold);
  color: var(--gold-400);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(212,175,55,0.15);
}
.tool-dl-btn i { font-size: 18px; color: var(--gold-400); }
.tool-dl-label { font-family: var(--font-ui); font-size: 12px; font-weight: 600; letter-spacing: 0.04em; }
.tool-dl-meta { font-family: var(--font-mono); font-size: 10px; color: var(--text-muted); letter-spacing: 0.04em; }

.tool-prev-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 8px 12px;
  border-radius: 8px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: all 0.2s var(--ease-silk);
}
.tool-prev-toggle:hover { background: var(--glass-bg-hover); color: var(--text-secondary); border-color: var(--glass-border-gold); }
.tool-prev-toggle i:first-child { color: var(--gold-400); }
.tool-prev-chevron { margin-left: auto; transition: transform 0.3s var(--ease-silk); }
.tool-prev-toggle[aria-expanded="true"] .tool-prev-chevron { transform: rotate(180deg); }

.tool-prev-list {
  display: none;
  flex-direction: column;
  gap: 6px;
  max-height: 220px;
  overflow-y: auto;
  padding: 2px;
}
.tool-prev-list.open { display: flex; }

.tool-prev-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 10px;
  border-radius: 8px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  transition: all 0.18s var(--ease-silk);
}
.tool-prev-row:hover { background: var(--glass-bg-hover); border-color: var(--glass-border-gold); }
.tool-prev-ver { font-family: var(--font-mono); font-size: 12px; color: var(--gold-400); letter-spacing: 0.06em; flex: 1; }

.tool-prev-links { display: flex; gap: 8px; }
.tool-prev-links a {
  display: flex; align-items: center; justify-content: center;
  width: 28px; height: 28px;
  border-radius: 6px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  font-size: 12px;
  text-decoration: none;
  transition: all 0.18s var(--ease-spring);
}
.tool-prev-links a:hover {
  background: linear-gradient(135deg, var(--gold-400), var(--gold-500));
  border-color: var(--gold-400);
  color: #0A0D1C;
  transform: translateY(-2px);
  box-shadow: 0 3px 10px rgba(212,175,55,0.4);
}

.tool-all-link {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 8px 12px;
  border-radius: 8px;
  background: transparent;
  border: 1px solid var(--glass-border);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: all 0.2s var(--ease-silk);
}
.tool-all-link:hover { border-color: var(--glass-border-gold); color: var(--gold-400); background: var(--glass-bg); }

/* ─── BODY SCROLL LOCKS ──────────────────────────────────────────── */
body.panel-open,
body.modal-open {
  overflow: hidden;
}
/* When user zooms browser in, viewport shrinks in CSS px.
   These rules keep the modal usable at any zoom level. */

/* 75% zoom → viewport appears larger, modal can be bigger */
@media (min-width: 1400px) {
  .modal-frame { max-width: min(740px, 90vw); }
}

/* Zoomed in heavily — 150%+ zoom means viewport < 900px */
@media (max-width: 900px) {
  .modal-frame {
    max-width: 98vw;
    max-height: 90vh;
    border-radius: 14px;
  }
  .modal-main { padding: 16px 16px 10px; gap: 14px; }
  .modal-logo { width: 56px; height: 56px; }
}

@media (max-width: 600px) {
  .modal-frame {
    max-height: 95vh;
    border-radius: 10px;
  }
  .card-modal { padding: 6px; }
  .modal-main {
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 14px 14px 8px;
    gap: 12px;
  }
  .modal-badges-row  { justify-content: center; }
  .modal-actions-row { flex-direction: column; align-items: stretch; }
  .modal-logo { width: 52px; height: 52px; }
  .modal-os-title { font-size: 18px; }
}

/* ─── MODAL ACTIONS RESPONSIVE ───────────────────────────────────── */
.modal-actions-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

/* Scroll section padding */
.scroll-section {
  padding: 0 16px 16px;
}