@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

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

/* ── GLOBAL TAP & SELECTION FIX ────────────────────────────── */
* {
  -webkit-tap-highlight-color: transparent !important;
  -webkit-touch-callout: none;
}
a, button, input, select, textarea,
[role="button"], label, .btn, .site-logo,
.feature-card, .stat-bar, .download-btn {
  -webkit-tap-highlight-color: transparent !important;
  outline: none !important;
}
a:focus, button:focus, input:focus,
select:focus, textarea:focus,
[role="button"]:focus, .btn:focus {
  outline: none !important;
  box-shadow: none !important;
}
a:focus-visible, button:focus-visible,
input:focus-visible, select:focus-visible,
textarea:focus-visible {
  outline: 2px solid rgba(79,70,229,.4) !important;
  outline-offset: 2px !important;
}
::selection {
  background: rgba(79,70,229,.15);
  color: var(--color-text-primary);
}
::-moz-selection {
  background: rgba(79,70,229,.15);
  color: var(--color-text-primary);
}
img, svg { -webkit-user-drag: none; user-select: none; }

:root {
  --color-primary:        #4F46E5;
  --color-primary-dark:   #3730A3;
  --color-primary-light:  #EEF2FF;
  --color-success:        #10B981;
  --color-bg:             #F8FAFC;
  --color-surface:        #FFFFFF;
  --color-border:         #E2E8F0;
  --color-text-primary:   #0F172A;
  --color-text-secondary: #64748B;
  --color-text-muted:     #94A3B8;
  --font-sans:  'DM Sans', system-ui, sans-serif;
  --font-mono:  'JetBrains Mono', monospace;
  --radius:     10px;
  --radius-lg:  16px;
  --shadow-md:  0 4px 16px rgba(15,23,42,.10);
  --shadow-xl:  0 24px 60px rgba(79,70,229,.18);
  --transition: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
}

html { font-size: 15px; }
body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── HEADER ─────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 1px 4px rgba(15,23,42,.06);
  z-index: 100;
}
.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-text-primary);
}
.site-logo .logo-icon {
  width: 32px; height: 32px;
  background: var(--color-primary-light);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: var(--color-primary);
}
.site-logo .logo-name {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.3px;
}

/* ── HERO ───────────────────────────── */
.hero {
  padding: 100px 24px;
  text-align: center;
  position: relative;
  background:
    radial-gradient(ellipse 60% 50% at 50% -10%, rgba(79,70,229,.07) 0%, transparent 70%);
}
/* Dot grid */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, #CBD5E1 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: 0.45;
  pointer-events: none;
}
.hero-content { position: relative; z-index: 1; max-width: 680px; margin: 0 auto; }
.hero-title {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -1px;
  line-height: 1.15;
  margin-bottom: 16px;
}
.hero-title span { color: var(--color-primary); }
.hero-subtitle {
  font-size: 17px;
  color: var(--color-text-secondary);
  max-width: 480px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ── FEATURES ───────────────────────── */
.features {
  max-width: 1100px;
  margin: 0 auto;
  padding: 60px 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 28px 24px;
  transition: transform var(--transition), box-shadow var(--transition);
  animation: fadeSlideUp 0.4s ease both;
}
.feature-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.feature-card:nth-child(1) { animation-delay: 0ms; }
.feature-card:nth-child(2) { animation-delay: 80ms; }
.feature-card:nth-child(3) { animation-delay: 160ms; }
.feature-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
}
.feature-icon.indigo { background: var(--color-primary-light); color: var(--color-primary); }
.feature-icon.sky    { background: #F0F9FF; color: #0EA5E9; }
.feature-icon.green  { background: #ECFDF5; color: var(--color-success); }
.feature-title  { font-size: 15px; font-weight: 600; margin-bottom: 6px; }
.feature-desc   { font-size: 14px; color: var(--color-text-secondary); line-height: 1.6; }

/* ── STATS BAR ──────────────────────── */
.stats-bar {
  background: var(--color-primary-light);
  border-top: 1px solid #C7D2FE;
  border-bottom: 1px solid #C7D2FE;
  padding: 40px 24px;
}
.stats-inner {
  max-width: 800px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  text-align: center;
}
.stat-num {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.5px;
  line-height: 1.1;
}
.stat-lbl {
  font-size: 13px;
  color: var(--color-primary-dark);
  margin-top: 4px;
  font-weight: 500;
}

/* ── FOOTER ─────────────────────────── */
footer {
  margin-top: auto;
  padding: 24px;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 13px;
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

/* ── DOWNLOAD PAGE ──────────────────── */
.download-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
}
.download-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 520px;
  overflow: hidden;
  animation: fadeSlideUp 0.3s ease both;
}
.download-card-top {
  padding: 36px 32px 24px;
  text-align: center;
  border-bottom: 1px solid var(--color-border);
}
.file-type-icon {
  width: 64px; height: 64px;
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 18px;
  font-size: 32px;
}
.file-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text-primary);
  word-break: break-word;
  line-height: 1.4;
  margin-bottom: 12px;
}
.file-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  font-size: 13px;
  color: var(--color-text-muted);
}
.file-meta span { display: flex; align-items: center; gap: 5px; }
.download-card-body { padding: 24px 32px 28px; }
.expiry-warning {
  background: #FFFBEB;
  border: 1px solid #FCD34D;
  border-radius: var(--radius);
  padding: 10px 14px;
  font-size: 13px;
  color: #92400E;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
}

.btn-download {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 16px 24px;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}
.btn-download:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(79,70,229,.35);
}
.btn-download:active { transform: scale(0.98); }
.btn-download.loading .dl-text { opacity: 0; }
.btn-download.loading::after {
  content: '';
  position: absolute;
  width: 20px; height: 20px;
  border: 2.5px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.download-note {
  text-align: center;
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: 12px;
}

/* ── 404 PAGE ───────────────────────── */
.not-found {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 24px;
  text-align: center;
}
.not-found-bg {
  font-size: clamp(100px, 20vw, 180px);
  font-weight: 700;
  color: #F1F5F9;
  line-height: 1;
  user-select: none;
  margin-bottom: -40px;
}
.not-found-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 8px;
  position: relative;
  z-index: 1;
}
.not-found-sub {
  font-size: 14px;
  color: var(--color-text-secondary);
  max-width: 360px;
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius);
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: background var(--transition), color var(--transition);
}
.btn-outline:hover { background: var(--color-primary); color: #fff; }

/* ── ANIMATIONS ─────────────────────── */
@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ── RESPONSIVE ─────────────────────── */
@media (max-width: 768px) {
  .features { grid-template-columns: 1fr; gap: 14px; padding: 40px 16px; }
  .stats-inner { grid-template-columns: 1fr; gap: 24px; }
  .hero { padding: 64px 16px; }
  .download-card-top, .download-card-body { padding-left: 20px; padding-right: 20px; }
}