/* ============================================================
   微笑動漫 — Glass Design System  v2
   ============================================================ */

/* ══════════════════════════════════════════════
   1. CSS 變數
══════════════════════════════════════════════ */
:root {
  /* 背景 */
  --bg-base:       #1E242B;
  --bg-section:    #242C35;
  --bg-surface:    #2A3340;

  /* Glass */
  --glass-bg:       rgba(245,247,246,.07);
  --glass-bg-mid:   rgba(245,247,246,.11);
  --glass-bg-light: rgba(245,247,246,.16);
  --glass-border:   rgba(245,247,246,.14);
  --glass-border-h: rgba(245,247,246,.26);
  --glass-blur:     24px;
  --glass-blur-lg:  36px;
  --glass-shadow:   0 8px 40px rgba(0,0,0,.32), inset 0 1px 0 rgba(255,255,255,.08);
  --glass-shadow-h: 0 16px 60px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.12);

  /* 文字 */
  --text-primary:   #F5F7F6;
  --text-secondary: #C3C6CE;
  --text-muted:     #7B8594;
  --text-label:     #3E4A54;

  /* Accent */
  --accent-blue:   #63A8FF;
  --accent-violet: #8F6BFF;
  --accent-pink:   #FF6BAE;
  --accent-cyan:   #6FECFF;

  /* 漸層 */
  --grad-hero:      linear-gradient(135deg,#63A8FF 0%,#8F6BFF 50%,#FF6BAE 100%);
  --grad-bg:        linear-gradient(180deg,#1E242B 0%,#181D24 100%);
  --grad-card-glow: linear-gradient(135deg,rgba(99,168,255,.15),rgba(143,107,255,.15));

  /* 圓角 */
  --radius-xl:   28px;
  --radius-lg:   20px;
  --radius-md:   14px;
  --radius-sm:   10px;
  --radius-pill: 999px;

  /* 間距 */
  --space-xs:  8px;
  --space-sm:  16px;
  --space-md:  24px;
  --space-lg:  40px;
  --space-xl:  64px;
  --space-2xl: 96px;

  /* 字體 */
  --font-main: 'Inter','Noto Sans TC',-apple-system,BlinkMacSystemFont,sans-serif;
  --font-jp:   'Noto Serif JP',Georgia,serif;

  /* 動畫 */
  --trans-fast:   all .18s cubic-bezier(.4,0,.2,1);
  --trans-smooth: all .32s cubic-bezier(.4,0,.2,1);
  --trans-bounce: all .42s cubic-bezier(.34,1.56,.64,1);
}

/* ══════════════════════════════════════════════
   2. Reset & Base
══════════════════════════════════════════════ */
*,*::before,*::after { margin:0; padding:0; box-sizing:border-box; }

html {
  font-size: 16px; /* ← 全站基礎字體大小，改這裡會影響所有 rem 單位 */
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-main);
  background: var(--grad-bg) fixed;
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

/* 強制覆蓋 Blocksy 預設字體（只需一次） */
html, body, input, button, textarea, select {
  font-family: var(--font-main) !important;
}

a      { color: inherit; text-decoration: none; }
img    { display: block; }
ul     { list-style: none; }
button { cursor: pointer; font-family: inherit; border: none; }

/* ══════════════════════════════════════════════
   3. Glass Utilities
══════════════════════════════════════════════ */
.glass,
.glass-mid,
.glass-light {
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}
.glass       { background: var(--glass-bg); }
.glass-mid   { background: var(--glass-bg-mid); }
.glass-light {
  background: var(--glass-bg-light);
  backdrop-filter: blur(var(--glass-blur-lg));
  -webkit-backdrop-filter: blur(var(--glass-blur-lg));
  border-color: var(--glass-border-h);
}
.glass:hover,
.glass-mid:hover {
  border-color: var(--glass-border-h);
  box-shadow: var(--glass-shadow-h);
  transform: translateY(-4px);
  transition: var(--trans-smooth);
}

/* ══════════════════════════════════════════════
   4. Buttons
══════════════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;    /* ← 按鈕上下/左右內距 */
  border-radius: var(--radius-pill);
  font-size: 14px;       /* ← 按鈕字體大小 */
  font-weight: 600;
  font-family: var(--font-main);
  letter-spacing: .02em;
  transition: var(--trans-smooth);
  white-space: nowrap;
}
.btn-sm { padding: 7px 16px; font-size: 13px; } /* ← 小按鈕尺寸 */

.btn-primary {
  background: linear-gradient(135deg,rgba(99,168,255,.25),rgba(143,107,255,.25));
  border: 1px solid rgba(99,168,255,.4);
  color: #A8D4FF;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.btn-primary:hover {
  background: linear-gradient(135deg,rgba(99,168,255,.35),rgba(143,107,255,.35));
  border-color: rgba(99,168,255,.6);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(99,168,255,.2);
}

.btn-secondary {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.btn-secondary:hover {
  border-color: var(--glass-border-h);
  color: var(--text-primary);
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  padding: 8px 16px;
}
.btn-ghost:hover {
  color: var(--text-primary);
  background: var(--glass-bg);
  border-color: var(--glass-border);
}

.btn-icon {
  width: 40px;           /* ← 圓形 icon 按鈕尺寸 */
  height: 40px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 16px;
}

/* ══════════════════════════════════════════════
   5. Chip
══════════════════════════════════════════════ */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 12px;       /* ← Chip 字體大小 */
  font-weight: 600;
  letter-spacing: .03em;
  text-transform: uppercase;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--trans-fast);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.chip:hover,
.chip.active {
  background: var(--glass-bg-light);
  border-color: rgba(99,168,255,.4);
  color: var(--accent-blue);
}
.chip.tag-genre { font-size: 11px; padding: 3px 10px; }

/* ══════════════════════════════════════════════
   6. Section Layout
══════════════════════════════════════════════ */
.section { padding: var(--space-xl) 0; position: relative; }

.container {
  max-width: 1280px;     /* ← 全站最大寬度 */
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
  gap: 12px;
}

.section-title {
  font-size: 22px;       /* ← 區塊標題大小 */
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--text-primary);
  position: relative;
  padding-left: 16px;
}
.section-title::before {
  content: '';
  position: absolute;
  left: 0; top: 4px; bottom: 4px;
  width: 3px;            /* ← 標題左側色條寬度 */
  background: var(--grad-hero);
  border-radius: 2px;
}

.section-link {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
  transition: var(--trans-fast);
}
.section-link:hover { color: var(--accent-blue); }

/* ══════════════════════════════════════════════
   7. Scrollbar
══════════════════════════════════════════════ */
::-webkit-scrollbar       { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(245,247,246,.12); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(245,247,246,.22); }

/* ══════════════════════════════════════════════
   8. Skeleton
══════════════════════════════════════════════ */
@keyframes shimmer {
  0%   { background-position: -600px 0; }
  100% { background-position:  600px 0; }
}
.skeleton {
  background: linear-gradient(
    90deg,
    rgba(255,255,255,.04) 25%,
    rgba(255,255,255,.08) 37%,
    rgba(255,255,255,.04) 63%
  );
  background-size: 600px 100%;
  animation: shimmer 1.5s infinite linear;
  border-radius: var(--radius-md);
}

/* ══════════════════════════════════════════════
   9. 狀態 / Glow / 工具
══════════════════════════════════════════════ */
.status-airing   { color: #52D68A; }
.status-finished { color: var(--text-muted); }
.status-upcoming { color: var(--accent-cyan); }

.glow-blue   { box-shadow: 0 0 20px rgba(99,168,255,.3); }
.glow-violet { box-shadow: 0 0 20px rgba(143,107,255,.3); }
.glow-pink   { box-shadow: 0 0 20px rgba(255,107,174,.3); }

.grad-text {
  background: var(--grad-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.divider {
  height: 1px;
  background: linear-gradient(90deg,transparent,var(--glass-border),transparent);
  margin: var(--space-xl) 0;
}

/* ══════════════════════════════════════════════
   10. Grid & Scroll Row
══════════════════════════════════════════════ */
.grid-4 { display: grid; grid-template-columns: repeat(6,1fr); gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: var(--space-md); }
.grid-2 { display: grid; grid-template-columns: repeat(2,1fr); gap: var(--space-md); }

.scroll-row {
  display: flex;
  gap: var(--space-md);
  overflow-x: auto;
  padding-bottom: var(--space-xs);
  scrollbar-width: none;
}
.scroll-row::-webkit-scrollbar { display: none; }

/* ══════════════════════════════════════════════
   11. Music Card
══════════════════════════════════════════════ */
.music-card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform .3s, box-shadow .3s, border-color .3s;
  cursor: pointer;
}
.music-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(123,104,238,.22);
  border-color: rgba(143,107,255,.35);
}
.music-card-cover { width: 100%; aspect-ratio: 1; overflow: hidden; position: relative; }
.music-card-cover img { width: 100%; height: 100%; object-fit: cover; }
.music-card-cover-placeholder {
  width: 100%; aspect-ratio: 1;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg,rgba(143,107,255,.18),rgba(30,36,43,.92));
  font-size: 36px; position: relative;
}
.music-play-btn {
  position: absolute; bottom: 12px; right: 12px;
  width: 36px; height: 36px;        /* ← 播放按鈕尺寸 */
  border-radius: 50%;
  background: rgba(143,107,255,.85);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; color: #fff; border: none; cursor: pointer;
  transition: transform .2s, box-shadow .2s;
  box-shadow: 0 4px 12px rgba(0,0,0,.35), 0 0 0 2px rgba(143,107,255,.3);
}
.music-play-btn:hover {
  transform: scale(1.12);
  box-shadow: 0 6px 20px rgba(143,107,255,.5), 0 0 0 3px rgba(143,107,255,.4);
}
.music-card-info   { padding: 12px 14px 14px; }
.music-card-type   { font-size: 11px; font-weight: 600; color: var(--accent-violet); letter-spacing: .05em; text-transform: uppercase; margin-bottom: 4px; }
.music-card-title  { font-size: 15px; font-weight: 700; color: var(--text-primary); margin-bottom: 3px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.music-card-artist { font-size: 12px; color: var(--text-secondary); margin-bottom: 6px; }
.music-card-anime  { display: flex; align-items: center; gap: 4px; font-size: 12px; color: var(--text-muted); }

/* ══════════════════════════════════════════════
   12. Responsive
══════════════════════════════════════════════ */
@media (max-width: 1280px) { .grid-4 { grid-template-columns: repeat(5,1fr); } }
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(4,1fr); }
  .container { padding: 0 var(--space-md); }
}
@media (max-width: 768px) {
  .grid-4 { grid-template-columns: repeat(3,1fr); }
  .grid-3 { grid-template-columns: repeat(2,1fr); }
  .section { padding: var(--space-lg) 0; }
  .section-title { font-size: 18px; } /* ← 手機版標題大小 */
}
@media (max-width: 480px) {
  .grid-4 { grid-template-columns: repeat(2,1fr); }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .container { padding: 0 var(--space-sm); }
}