/**
 * GlazePress - Glassmorphism 毛玻璃效果工具类
 *
 * 核心效果：
 * - backdrop-filter: blur() + 半透明背景
 * - 内发光 + 边缘高光（模拟真实玻璃折射）
 * - 多层柔和阴影
 * - 悬浮时的深度变化动画
 */

/* ==================== 基础毛玻璃卡片 ==================== */
.glass {
  position: relative;
  background: var(--bg-glass);
  backdrop-filter: blur(var(--glass-blur)) saturate(150%);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(150%);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-md);
  box-shadow:
    var(--glass-inner-glow),
    0 4px 16px -4px var(--shadow-color),
    0 2px 6px -2px rgba(0, 0, 0, 0.04);
}

.glass::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.1) 0%,
    transparent 50%
  );
}

/* 悬浮态毛玻璃 */
.glass:hover {
  background: var(--bg-glass-hover);
  box-shadow:
    var(--glass-inner-glow),
    0 12px 32px -6px var(--shadow-strong),
    0 4px 12px -2px rgba(0, 0, 0, 0.06);
  transform: translateY(-2px);
  transition: all var(--transition-base);
}

/* ==================== 卡片毛玻璃变体 ==================== */
.glass-card {
  position: relative;
  background: var(--bg-glass);
  backdrop-filter: blur(var(--glass-blur)) saturate(180%) brightness(1.02);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(180%) brightness(1.02);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow:
    var(--glass-inner-glow),
    var(--glass-edge-highlight),
    0 8px 24px -8px var(--shadow-color),
    0 3px 10px -3px rgba(0, 0, 0, 0.04);
  transition: all var(--transition-base);
}

/* 卡片内发光边缘 - 关键视觉效果 */
.glass-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: radial-gradient(
    ellipse at 30% 20%,
    rgba(255, 255, 255, 0.15) 0%,
    transparent 60%
  );
  z-index: 1;
}

.glass-card:hover {
  background: var(--bg-glass-hover);
  backdrop-filter: blur(calc(var(--glass-blur) * 1.5)) saturate(200%) brightness(1.03);
  box-shadow:
    var(--glass-inner-glow),
    var(--glass-edge-highlight),
    0 20px 40px -12px var(--shadow-strong),
    0 8px 20px -6px var(--shadow-color);
  transform: translateY(-4px) scale(1.005);
}

/* 文章卡片特殊样式 */
.post-card.glass-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 40%;
  pointer-events: none;
  z-index: 1;
  background: linear-gradient(
    to top,
    var(--bg-primary) 0%,
    transparent 100%
  );
  opacity: 0;
  transition: opacity var(--transition-base);
}

.post-card.glass-card:hover::after { opacity: 0.05; }

/* 文章卡片 hover 放大动画 */
.post-card.glass-card:hover {
  transform: translateY(-4px) scale(1.03);
}

/* ==================== 导航栏毛玻璃 ==================== */
.glass-nav {
  background: var(--bg-glass);
  backdrop-filter: blur(20px) saturate(200%);
  -webkit-backdrop-filter: blur(20px) saturate(200%);
  border-bottom: 1px solid var(--bg-glass-border);
  box-shadow:
    0 1px 8px var(--shadow-color),
    inset 0 -1px 0 var(--bg-glass-border);
}

.glass-nav--transparent {
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-bottom-color: transparent;
  box-shadow: none;
}

/* ==================== 输入框/搜索框毛玻璃 ==================== */
.glass-input {
  background: rgba(255, 255, 255, 0.45);
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-xl);
  padding: 0.7rem 1.25rem;
  font-size: 0.9375rem;
  color: var(--text-primary);
  outline: none;
  transition: all var(--transition-fast);
  box-shadow: var(--glass-inner-glow), 0 2px 8px var(--shadow-color);
}

[data-theme="dark"] .glass-input {
  background: rgba(15, 23, 42, 0.45);
  border-color: rgba(255, 255, 255, 0.08);
  color: #e2e8f0;
}

.glass-input:focus {
  border-color: var(--color-primary);
  box-shadow:
    var(--glass-inner-glow),
    0 0 0 3px rgba(99, 102, 241, 0.12),
    0 4px 16px -4px rgba(99, 102, 241, 0.15);
  background: rgba(255, 255, 255, 0.65);
}

[data-theme="dark"] .glass-input:focus {
  background: rgba(15, 23, 42, 0.65);
}

.glass-input::placeholder { color: var(--text-tertiary); opacity: 0.7; }

/* ==================== 按钮毛玻璃变体 ==================== */
.glass-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.6rem 1.35rem;
  background: var(--bg-glass);
  backdrop-filter: blur(var(--glass-blur)) saturate(180%);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(180%);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: all var(--transition-base);
  box-shadow: var(--glass-inner-glow), 0 2px 8px var(--shadow-color);
  position: relative;
  overflow: hidden;
}

/* 按钮光泽扫过效果 */
.glass-btn::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.15),
    transparent
  );
  transition: left 0.5s ease;
}

.glass-btn:hover::after { left: 100%; }

.glass-btn:hover {
  transform: translateY(-2px);
  background: var(--bg-glass-hover);
  box-shadow:
    var(--glass-inner-glow),
    0 8px 24px -4px var(--shadow-strong),
    0 3px 10px -2px var(--shadow-color);
  border-color: rgba(139, 92, 246, 0.25);
}

.glass-btn:active {
  transform: translateY(0) scale(0.98);
  box-shadow: var(--glass-inner-glow), 0 1px 4px var(--shadow-color);
}

/* 主色按钮（紫→粉渐变） */
.glass-btn--primary {
  background: linear-gradient(
    135deg,
    var(--color-primary),
    var(--color-accent)
  );
  border-color: transparent;
  color: white;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.15);
  box-shadow:
    0 4px 14px -3px rgba(139, 92, 246, 0.5),
    0 2px 6px -2px rgba(236, 72, 153, 0.15);
}

.glass-btn--primary:hover {
  background: linear-gradient(
    135deg,
    var(--color-primary-light),
    var(--color-accent-light)
  );
  box-shadow:
    0 8px 28px -6px rgba(139, 92, 246, 0.65),
    0 4px 12px -3px rgba(236, 72, 153, 0.25);
  transform: translateY(-2px);
  color: white;
}

/* 幽灵按钮（透明背景 + 边框） */
.glass-btn--ghost {
  background: transparent;
  border: 1px solid var(--bg-glass-border);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  box-shadow: none;
}

.glass-btn--ghost:hover {
  background: var(--bg-glass);
  box-shadow: 0 2px 8px var(--shadow-color);
}

/* ==================== 模态框 / 遮罩 ==================== */
.glass-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-slow);
}

.glass-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.glass-modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.95);
  background: var(--bg-glass);
  backdrop-filter: blur(28px) saturate(200%) brightness(1.05);
  -webkit-backdrop-filter: blur(28px) saturate(200%) brightness(1.05);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-xl);
  box-shadow:
    var(--glass-inner-glow),
    0 30px 60px -15px var(--shadow-strong),
    0 0 0 1px var(--bg-glass-border),
    0 0 80px -30px var(--shadow-accent);
  z-index: 101;
  opacity: 0;
  pointer-events: none;
  transition:
    transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1),
    opacity var(--transition-slow);
  max-width: 90vw;
  max-height: 85vh;
  overflow-y: auto;
}

.glass-modal.active {
  transform: translate(-50%, -50%) scale(1);
  opacity: 1;
  pointer-events: auto;
}

/* ==================== 标签 (Pill) ==================== */
.tag-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.25em 0.85em;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  white-space: nowrap;
  background: linear-gradient(
    135deg,
    rgba(139, 92, 246, 0.12),
    rgba(236, 72, 153, 0.06)
  );
  color: var(--color-primary);
  border: 1px solid rgba(139, 92, 246, 0.18);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  transition: all var(--transition-fast);
  box-shadow: 0 1px 4px rgba(139, 92, 246, 0.1);
}

.tag-pill:hover {
  background: linear-gradient(
    135deg,
    rgba(139, 92, 246, 0.2),
    rgba(236, 72, 153, 0.12)
  );
  border-color: rgba(139, 92, 246, 0.35);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px -2px rgba(139, 92, 246, 0.25);
}

/* 彩色标签变体 */
.tag-pill--rose {
  background: linear-gradient(135deg, rgba(251, 113, 133, 0.1), rgba(251, 113, 133, 0.05));
  color: #fb7185;
  border-color: rgba(251, 113, 133, 0.18);
}
.tag-pill--rose:hover { background: linear-gradient(135deg, rgba(251, 113, 133, 0.2), rgba(251, 113, 133, 0.1)); }

.tag-pill--emerald {
  background: linear-gradient(135deg, rgba(52, 211, 153, 0.1), rgba(52, 211, 153, 0.05));
  color: #34d399;
  border-color: rgba(52, 211, 153, 0.18);
}
.tag-pill--emerald:hover { background: linear-gradient(135deg, rgba(52, 211, 153, 0.2), rgba(52, 211, 153, 0.1)); }

.tag-pill--amber {
  background: linear-gradient(135deg, rgba(251, 191, 36, 0.1), rgba(251, 191, 36, 0.05));
  color: #fbbf24;
  border-color: rgba(251, 191, 36, 0.18);
}
.tag-pill--amber:hover { background: linear-gradient(135deg, rgba(251, 191, 36, 0.2), rgba(251, 191, 36, 0.1)); }

/* ==================== 导航栏特殊样式 ==================== */
.navbar-glass {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  z-index: 1000;
  transition:
    background 0.35s ease,
    border-color 0.35s ease,
    box-shadow 0.35s ease,
    backdrop-filter 0.35s ease,
    transform 0.35s ease;
}

.navbar-glass.scrolled {
  background: var(--bg-glass);
  backdrop-filter: blur(22px) saturate(200%);
  -webkit-backdrop-filter: blur(22px) saturate(200%);
  border-bottom: 1px solid var(--bg-glass-border);
  box-shadow:
    0 1px 12px var(--shadow-color),
    0 0 40px -20px var(--shadow-accent);
  transform: translateY(0);
}

.navbar-glass.at-top {
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-bottom-color: transparent;
  box-shadow: none;
  transform: translateY(0);
}

/* ==================== 社交图标按钮统一圆角矩形 ==================== */
.social-icon-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* ==================== 可点击元素通用 hover 动画 ==================== */
.hover-lift {
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.hover-lift:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 12px 28px -6px var(--shadow-strong);
}
.hover-lift:active {
  transform: translateY(0) scale(0.98);
}