:root {
  --holo-blue: #33B5E5;
  --holo-blue-main: #0099CC;
  --holo-blue-dark: #0078A8;
  --bg: #F5F5F5;
  --text: #333333;
  --muted: #888888;
  --hairline: #E0E0E0;
}

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

body {
  font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.container { width: 100%; margin: 0 auto; padding: 0 20px; }

/* ── Aero glass action bar (full-width window title bar; no blue underline) ── */
.holo-bar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  width: 100%; padding: 10px 20px;
  background: linear-gradient(#505050, #262626 60%, #1A1A1A);
  border-radius: 0;
  border-bottom: 1px solid #0F0F0F;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.4), inset 0 2px 4px rgba(255,255,255,.14), inset 0 -1px 0 rgba(0,0,0,.5);
}
.holo-title {
  display: flex; align-items: center; gap: 10px;
  font-size: 1.05em; font-weight: 600; letter-spacing: .2px;
  color: #fff; text-shadow: 0 1px 1px rgba(0,0,0,.5);
  min-width: 0;
}
.holo-icon {
  width: 26px; height: 26px; border-radius: 5px; flex: none;
  box-shadow: 0 1px 2px rgba(0,0,0,.5), inset 0 0 0 1px rgba(255,255,255,.15);
}

/* ── Aero glossy buttons ── */
.holo-btn {
  font-family: 'Roboto', sans-serif;
  font-size: .85em; font-weight: 500; text-decoration: none;
  border-radius: 3px; padding: 6px 16px; color: #fff; flex: none;
  text-shadow: 0 1px 1px rgba(0,0,0,.3);
}
.holo-btn-primary {
  background: linear-gradient(#8EDBFF, #4FC2F5 45%, #1E9EDB 75%, #0E82B8);
  border: 1px solid #0E6FA5;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.75), inset 0 -1px 0 rgba(0,0,0,.25), 0 1px 3px rgba(0,0,0,.4);
}
.holo-btn-primary:hover { filter: brightness(1.06); }
.holo-btn-primary:active {
  box-shadow: inset 0 2px 4px rgba(0,0,0,.3), inset 0 1px 0 rgba(0,0,0,.2);
}

/* ── STATS window (Windows 7 window look) ── */
.stats-window {
  border: 1px solid #B8B8B8; border-radius: 5px;
  background: #fff; overflow: hidden; margin: 0;
  box-shadow: 0 2px 6px rgba(0,0,0,.16), inset 0 1px 0 #fff;
}
.stats-header {
  display: flex; align-items: center; gap: 5px;
  padding: 5px 9px;
  background: linear-gradient(#F7F7F7, #E6E6E6);
  border-bottom: 1px solid #D2D2D2;
  box-shadow: inset 0 1px 0 #fff;
}
.stats-label { font-size: .7em; font-weight: 500; letter-spacing: .5px; color: #777; margin-left: 6px; }
.stats-body { display: flex; }
.stat { flex: 1; text-align: center; padding: 18px 0 14px; }
.stat + .stat { border-left: 1px solid #E6E6E6; }
.stat-num { font-size: 1.9em; font-weight: 700; color: #1A1A1A; text-shadow: 0 1px 0 #fff; }
.stat-num.blue { color: #0099CC; }
.stat-label { font-size: .8em; color: #777; margin-top: 3px; }

/* ── Section label ── */
.section-label {
  font-size: .72em; font-weight: 700; letter-spacing: 1.4px;
  color: #8A8A8A; text-shadow: 0 1px 0 #fff;
  margin: 4px 0 10px;
}

/* ── Framed wallpaper tiles ── */
.holo-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px;
  margin-bottom: 24px;
}
.tile {
  display: block; text-decoration: none;
  border: 1px solid #C4C4C4; border-radius: 4px;
  background: linear-gradient(#FFF, #F7F7F7);
  box-shadow: inset 0 1px 0 #fff, 0 1px 2px rgba(0,0,0,.15);
  padding: 6px 6px 0; overflow: hidden;
  transition: border-color .15s, box-shadow .15s;
}
.tile:hover {
  border-color: var(--holo-blue);
  box-shadow: inset 0 1px 0 #fff, 0 0 9px rgba(51,181,229,.5), 0 2px 5px rgba(0,0,0,.2);
}
.tile-frame {
  border: 1px solid #B8B8B8; border-radius: 2px;
  padding: 2px; background: #fff;
  box-shadow: 0 1px 3px rgba(0,0,0,.18), inset 0 1px 0 #fff;
  transition: border-color .15s;
}
.tile:hover .tile-frame { border-color: var(--holo-blue); }
.tile-thumb {
  position: relative; aspect-ratio: 16 / 9; overflow: hidden;
  border: 1px solid #D4D4D4;
}
.tile-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.tile-thumb::after {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(115deg, rgba(255,255,255,.32) 0%, rgba(255,255,255,.08) 38%, transparent 55%);
}
.tile-caption {
  padding: 6px 4px 7px; text-align: center;
  font-size: .78em; font-weight: 700; color: #333;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  transition: color .15s;
}
.tile:hover .tile-caption { color: var(--holo-blue-main); }
.tile-static { cursor: default; }
.tile-badge {
  position: absolute; top: 5px; right: 5px; z-index: 1;
  background: linear-gradient(#8EDBFF, #33B5E5);
  border: 1px solid #0078A8; border-radius: 2px;
  padding: 1px 6px; font-size: .6em; font-weight: 700; letter-spacing: .3px;
  color: #fff; box-shadow: inset 0 1px 0 rgba(255,255,255,.5);
}
.tile-badge-pc {
  left: 5px; right: auto;
  background: linear-gradient(#A0A0A0, #5E5E5E);
  border: 1px solid #3F3F3F;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.4);
}

/* ── Layout: phone | wallpapers | info (3 columns) ── */
.holo-layout {
  display: flex; gap: 18px; align-items: flex-start;
  margin-top: 18px;
}
.holo-main { flex: 1; min-width: 0; }
.holo-sidebar {
  width: 240px; flex: none;
  display: flex; flex-direction: column; gap: 14px;
}

/* ── Generic window (Windows 7 look) ── */
.win {
  border: 1px solid #B8B8B8; border-radius: 5px;
  background: #fff; overflow: hidden;
  box-shadow: 0 2px 6px rgba(0,0,0,.16), inset 0 1px 0 #fff;
}
.win-header {
  display: flex; align-items: center; gap: 5px;
  padding: 5px 9px;
  background: linear-gradient(#F7F7F7, #E6E6E6);
  border-bottom: 1px solid #D2D2D2;
  box-shadow: inset 0 1px 0 #fff;
}
.win-title { font-size: .68em; font-weight: 600; letter-spacing: .5px; color: #777; margin-left: 6px; }
.win-icon { width: 16px; height: 16px; flex: none; }
.win-icon-we { height: 12px; width: 12px; max-width: 48px; }

/* ── Phone preview window (9:16 portrait, simulates a phone; scales with viewport) ── */
.preview-win { width: auto; flex: 0 0 clamp(300px, 26vw, 520px); }
.preview-win .preview-body {
  padding: 4px; background: #fff;
  box-shadow: inset 0 1px 0 #fff;
}
.preview-win .preview-body iframe {
  display: block; width: 100%; aspect-ratio: 9 / 16;
  border: 1px solid #D4D4D4; background: #000;
}

.feat-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 10px; font-size: .82em;
}
.feat-row + .feat-row { border-top: 1px solid #ECECEC; }
.feat-key { color: #333; font-weight: 500; }
.feat-val { color: #888; }

.gh-star-row { padding: 8px 10px; font-size: .82em; color: #333; border-bottom: 1px solid #ECECEC; }
.gh-star { color: #FF8800; }
.gh-link {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 10px; font-size: .82em; color: var(--holo-blue-main); text-decoration: none;
}
.gh-link:hover { background: #F0F9FF; text-decoration: underline; }
.gh-arrow { color: #BBB; }

/* ── Footer ── */
footer {
  border-top: 1px solid var(--hairline);
  background: linear-gradient(#FFF, #F2F2F2);
  text-shadow: 0 1px 0 #fff;
  padding: 16px 0 24px; text-align: center;
  font-size: .82em; color: #888;
}
footer a { color: var(--holo-blue-main); text-decoration: none; }
footer a:hover { text-decoration: underline; }
footer .divider { margin: 0 8px; color: #BBB; }

/* ── Demo overlay (same structure/ids as index.html → js/script.js reused) ── */
.demo-overlay {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(0,0,0,.7);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden;
  transition: opacity .3s, visibility .3s;
}
.demo-overlay.active { opacity: 1; visibility: visible; }
.demo-frame {
  position: relative; width: min(94vw, 900px); height: min(85vh, 700px);
  background: #fff; border-radius: 5px;
  overflow: hidden; box-shadow: 0 20px 60px rgba(0,0,0,.3);
  display: flex; flex-direction: column;
}
.demo-frame-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 20px; background: linear-gradient(#F7F7F7, #E6E6E6);
  border-bottom: 1px solid #D2D2D2;
  font-weight: 600; font-size: .9em;
}
.demo-frame-header .demo-title { color: #333; }
.demo-frame-header .demo-close {
  width: 32px; height: 32px; border-radius: 3px;
  border: 1px solid #A9A9A9; background: linear-gradient(#FFF, #DCDCDC);
  font-size: 1.1em; line-height: 1; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  color: #555; transition: all .2s;
}
.demo-frame-header .demo-close:hover {
  background: linear-gradient(#F8C9C5, #E8A39C); color: #B0301E; border-color: #C77A70;
}
.demo-frame iframe { flex: 1; border: 0; width: 100%; }

@media (max-width: 1050px) {
  .holo-layout { flex-wrap: wrap; }
  .holo-main { flex-basis: 100%; order: 3; }
  /* Phone preview and sidebar share the row: 40% / 60% */
  .preview-win { flex: 0 0 40%; width: auto; }
  .holo-sidebar { flex: 1; }
}

@media (max-width: 700px) {
  .holo-layout { flex-direction: column; }
  .preview-win, .holo-sidebar { width: 100%; }
  .holo-sidebar { flex: none; }
}

@media (max-width: 600px) {
  .holo-grid { grid-template-columns: 1fr; }
  .holo-title { font-size: .9em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .holo-btn { padding: 6px 12px; }
  .demo-frame { width: 100vw; height: 100vh; border-radius: 0; }
}