/* ========================================================================
   个人导航页 —— 样式（1:1 复刻 aishimmer.cloud，再叠加管理功能）
   ======================================================================== */

/* ---------- 基础重置 ---------- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
/* 保证 hidden 属性永远生效，防止被 display 等样式覆盖（弹窗/记事本互斥切换依赖它） */
[hidden] {
  display: none !important;
}

/* ---------- 滚动条 ---------- */
::-webkit-scrollbar-track {
  background: #f1f5f9;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 4px;
  transition: background-color 0.2s;
}
::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}
::-webkit-scrollbar-corner {
  background: transparent;
}

/* ---------- CSS 变量（浅色） ---------- */
:root {
  --bg-primary: #fff;
  --bg-secondary: #f8fafc;
  --bg-card: #fff;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --border-color: #e2e8f0;
  --accent-color: #667eea;
  --hover-color: #f1f5f9;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  /* 四季主题变量 */
  --spring-gradient-start: #ffb7c5;
  --spring-gradient-end: #98d8aa;
  --spring-accent: #ff69b4;
  --spring-glow: rgba(255, 105, 180, 0.2);
  --spring-particle-1: #ffb7c5;
  --spring-particle-2: #fff;
  --spring-particle-3: #ff69b4;
  --spring-particle-4: pink;
  --summer-gradient-start: #87ceeb;
  --summer-gradient-mid: #ffa07a;
  --summer-gradient-end: orange;
  --summer-accent: gold;
  --summer-glow: rgba(255, 215, 0, 0.15);
  --summer-particle-1: #ff0;
  --summer-particle-2: #ffffa0;
  --summer-particle-3: #fff;
  --summer-particle-4: #fffacd;
  --autumn-gradient-start: #ff8c00;
  --autumn-gradient-end: gold;
  --autumn-accent: #8b4513;
  --autumn-glow: rgba(139, 69, 19, 0.1);
  --autumn-particle-1: #ff4500;
  --autumn-particle-2: orange;
  --autumn-particle-3: #daa520;
  --autumn-particle-4: #9acd32;
  --autumn-particle-5: #8b4513;
  --winter-gradient-start: #e0ffff;
  --winter-gradient-mid: #b0e0e6;
  --winter-gradient-end: #87ceeb;
  --winter-accent: #4682b4;
  --winter-glow: rgba(70, 130, 180, 0.1);
  --winter-particle-1: #fff;
  --winter-particle-2: #f0f8ff;
  --winter-particle-3: #e6e6fa;
  --winter-particle-4: #f5f5f5;
}

/* ---------- CSS 变量（深色） ---------- */
.dark {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-card: #1e293b;
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  --border-color: #334155;
  --accent-color: #818cf8;
  --hover-color: #334155;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
  --spring-gradient-start: #2d1f2d;
  --spring-gradient-end: #1a2f1a;
  --spring-accent: #ff69b4;
  --spring-glow: rgba(255, 105, 180, 0.15);
  --summer-gradient-start: #1a1a2e;
  --summer-gradient-mid: #16213e;
  --summer-gradient-end: #0f3460;
  --summer-accent: gold;
  --summer-glow: rgba(255, 215, 0, 0.2);
  --summer-particle-1: #ff0;
  --summer-particle-2: #adff2f;
  --summer-particle-3: #fff;
  --autumn-gradient-start: #3d2914;
  --autumn-gradient-end: #4a3728;
  --autumn-accent: #d2691e;
  --autumn-glow: rgba(218, 165, 32, 0.1);
  --autumn-particle-1: rgba(255, 69, 0, 0.8);
  --autumn-particle-2: rgba(255, 165, 0, 0.8);
  --autumn-particle-3: rgba(218, 165, 32, 0.8);
  --autumn-particle-4: rgba(154, 205, 50, 0.7);
  --autumn-particle-5: rgba(139, 69, 19, 0.8);
  --winter-gradient-start: #1a1a2e;
  --winter-gradient-mid: #16213e;
  --winter-gradient-end: #0f3460;
  --winter-accent: #add8e6;
  --winter-glow: rgba(173, 216, 230, 0.15);
}

/* ---------- 冬季背景渐变 ---------- */
.season-winter .bg-gradient {
  background: linear-gradient(180deg, var(--winter-gradient-start) 0%, var(--winter-gradient-mid) 50%, var(--winter-gradient-end) 100%),
    radial-gradient(ellipse at 50% 10%, var(--winter-glow) 0%, transparent 50%);
  opacity: 0.8;
  transition: background 1.5s ease-in-out;
}
.dark.season-winter .bg-gradient {
  background: radial-gradient(ellipse at 50% 30%, rgba(173, 216, 230, 0.1) 0%, transparent 40%),
    linear-gradient(180deg, var(--winter-gradient-start) 0%, var(--winter-gradient-mid) 40%, var(--winter-gradient-end) 100%);
  opacity: 0.9;
  transition: background 1.5s ease-in-out;
}

/* ---------- 页面主体 ---------- */
/* 固定滚动条占位，避免切换分类时内容高度变化导致滚动条出现/消失而整体位移 */
html {
  scrollbar-gutter: stable;
}
body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  font-family: Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  transition: background-color 0.3s, color 0.3s;
  overflow: hidden auto;
  scrollbar-gutter: stable;
}
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background-color: rgba(100, 116, 139, 0.3);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background-color: rgba(100, 116, 139, 0.5);
}
.dark ::-webkit-scrollbar-thumb {
  background-color: rgba(148, 163, 184, 0.3);
}
.dark ::-webkit-scrollbar-thumb:hover {
  background-color: rgba(148, 163, 184, 0.5);
}

.app {
  flex-direction: column;
  min-height: 100vh;
  display: flex;
  position: relative;
}

/* ---------- 背景渐变 ---------- */
.bg-gradient {
  pointer-events: none;
  z-index: -1;
  background: radial-gradient(ellipse at 20% 80%, var(--accent-color) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(168, 85, 247, 0.3) 0%, transparent 50%);
  opacity: 0.5;
  width: 100%;
  height: 100%;
  transition: background 1.5s ease-in-out;
  position: fixed;
  top: 0;
  left: 0;
}
.season-spring .bg-gradient {
  background: radial-gradient(ellipse at 20% 80%, var(--spring-gradient-start) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, var(--spring-glow) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, var(--spring-gradient-end) 0%, transparent 40%);
  opacity: 0.6;
}

/* ---------- 粒子层 ---------- */
.dynamic-bg {
  pointer-events: none;
  z-index: 0;
  width: 100%;
  height: 100%;
  position: fixed;
  top: 0;
  left: 0;
  overflow: hidden;
}
.particle {
  opacity: 0;
  background: rgba(102, 126, 234, 0.3);
  border-radius: 50%;
  animation: float linear infinite;
  position: absolute;
  bottom: -20px;
}
.particle:nth-child(odd) {
  background: rgba(102, 126, 234, 0.3);
}
.particle:nth-child(2n) {
  background: rgba(168, 85, 247, 0.3);
}
.dark .particle,
.dark .particle:nth-child(odd) {
  background: rgba(129, 140, 248, 0.35);
}
.dark .particle:nth-child(2n) {
  background: rgba(192, 132, 252, 0.35);
}

@keyframes float {
  0% {
    opacity: 0;
    transform: translateY(0) translate(0) scale(1);
  }
  50% {
    opacity: 0.4;
    transform: translateY(-50vh) translate(20px) scale(0.8);
  }
  to {
    opacity: 0;
    transform: translateY(calc(-100vh - 20px)) translate(-10px) scale(0.6);
  }
}
@keyframes float-up {
  0% {
    opacity: 0;
    transform: translateY(-10vh) translate(0) rotate(0) scale(0.8);
  }
  10% {
    opacity: 0.8;
  }
  50% {
    opacity: 0.6;
    transform: translateY(55vh) translate(30px) rotate(180deg) scale(1);
  }
  90% {
    opacity: 0.3;
  }
  to {
    opacity: 0;
    transform: translateY(110vh) translate(-15px) rotate(360deg) scale(0.6);
  }
}

/* --- 春季花瓣 --- */
.season-spring .particle {
  filter: blur(0.5px);
  will-change: transform, opacity;
  border-radius: 50% 0 50% 50%;
  animation: float-up linear infinite;
  box-shadow: 0 0 5px rgba(255, 182, 193, 0.5);
}
.season-spring .particle.particle-1 { background: var(--spring-particle-1); }
.season-spring .particle.particle-2 { background: var(--spring-particle-2); }
.season-spring .particle.particle-3 { background: var(--spring-particle-3); }
.season-spring .particle.particle-4 { background: var(--spring-particle-4); }
.dark.season-spring .particle {
  box-shadow: 0 0 5px rgba(255, 105, 180, 0.3);
}
.dark.season-spring .particle.particle-1 { background: rgba(255, 183, 197, 0.7); }
.dark.season-spring .particle.particle-2 { background: rgba(255, 255, 255, 0.5); }
.dark.season-spring .particle.particle-3 { background: rgba(255, 105, 180, 0.7); }
.dark.season-spring .particle.particle-4 { background: rgba(255, 192, 203, 0.7); }

/* --- 夏季萤火虫 --- */
.season-summer .bg-gradient {
  background: linear-gradient(180deg, var(--summer-gradient-start) 0%, var(--summer-gradient-mid) 30%, var(--summer-gradient-end) 100%),
    radial-gradient(ellipse at 50% 70%, var(--summer-glow) 0%, transparent 60%);
  opacity: 0.7;
}
.dark.season-summer .bg-gradient {
  background: radial-gradient(ellipse at 50% 50%, var(--summer-gradient-mid) 0%, var(--summer-gradient-start) 50%, var(--summer-gradient-end) 100%);
  opacity: 0.8;
}
.season-summer .particle {
  will-change: transform, opacity;
  border-radius: 50%;
  animation: firefly-float ease-in-out infinite, firefly-pulse ease-in-out infinite;
  position: absolute;
  top: 0;
  bottom: auto;
}
.season-summer .particle.summer-particle-1 {
  background: var(--summer-particle-1);
  box-shadow: 0 0 4px 2px rgba(255, 255, 0, 0.8), 0 0 8px 4px rgba(255, 255, 0, 0.6), 0 0 12px 6px rgba(255, 255, 0, 0.4), 0 0 20px 8px rgba(255, 255, 0, 0.2);
}
.season-summer .particle.summer-particle-2 {
  background: var(--summer-particle-2);
  box-shadow: 0 0 3px 1.5px rgba(255, 255, 160, 0.8), 0 0 6px 3px rgba(255, 255, 160, 0.6), 0 0 10px 5px rgba(255, 255, 160, 0.4), 0 0 16px 6px rgba(255, 255, 160, 0.2);
}
.season-summer .particle.summer-particle-3 {
  background: var(--summer-particle-3);
  box-shadow: 0 0 5px 2px rgba(255, 255, 255, 0.9), 0 0 10px 4px rgba(255, 255, 255, 0.7), 0 0 15px 6px rgba(255, 255, 255, 0.5), 0 0 22px 8px rgba(255, 255, 255, 0.3);
}
.dark.season-summer .particle.summer-particle-1 {
  box-shadow: 0 0 6px 3px rgba(255, 255, 0, 0.9), 0 0 12px 6px rgba(255, 255, 0, 0.7), 0 0 18px 9px rgba(255, 255, 0, 0.5), 0 0 28px 12px rgba(255, 255, 0, 0.3);
}
.dark.season-summer .particle.summer-particle-2 {
  box-shadow: 0 0 5px 2px rgba(173, 255, 47, 0.9), 0 0 10px 4px rgba(173, 255, 47, 0.7), 0 0 15px 6px rgba(173, 255, 47, 0.5), 0 0 22px 8px rgba(173, 255, 47, 0.3);
}
.dark.season-summer .particle.summer-particle-3 {
  box-shadow: 0 0 7px 3px rgba(255, 255, 255, 0.95), 0 0 14px 6px rgba(255, 255, 255, 0.8), 0 0 20px 9px rgba(255, 255, 255, 0.6), 0 0 30px 12px rgba(255, 255, 255, 0.4);
}
@keyframes firefly-float {
  0% { opacity: 0.4; transform: translate(0); }
  25% { opacity: 0.8; transform: translate(15px, -20px); }
  50% { opacity: 0.6; transform: translate(-10px, -10px); }
  75% { opacity: 0.9; transform: translate(20px, 10px); }
  to { opacity: 0.4; transform: translate(0); }
}
@keyframes firefly-pulse {
  0%, to { opacity: 0.4; transform: scale(0.8); }
  50% { opacity: 0.9; transform: scale(1.2); }
}
@keyframes firefly-drift {
  0%, to { transform: translateY(0); }
  50% { transform: translateY(-30px); }
}

/* --- 秋季落叶 --- */
.season-autumn .bg-gradient {
  background: radial-gradient(ellipse at 20% 80%, var(--autumn-gradient-start) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, var(--autumn-glow) 0%, transparent 50%),
    radial-gradient(ellipse at 60% 60%, var(--autumn-gradient-end) 0%, transparent 40%);
  opacity: 0.7;
}
.dark.season-autumn .bg-gradient {
  background: radial-gradient(ellipse at 30% 70%, var(--autumn-gradient-start) 0%, transparent 40%),
    radial-gradient(ellipse at 70% 30%, var(--autumn-glow) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, var(--autumn-gradient-end) 0%, transparent 35%);
  opacity: 0.8;
}
.season-autumn .particle {
  opacity: 0;
  will-change: transform, opacity;
  position: absolute;
  top: -30px;
  bottom: auto;
}
.season-autumn .particle.autumn-leaf-1 { border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%; }
.season-autumn .particle.autumn-leaf-2 { border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%; }
.season-autumn .particle.autumn-leaf-3 { border-radius: 50% 50% 30% 70% / 40% 60%; }
.season-autumn .particle.autumn-leaf-4 { border-radius: 40% 60% 70% 30% / 50% 40% 60% 50%; }
.season-autumn .particle.autumn-leaf-5 { border-radius: 70% 30% 40% 60% / 30% 70% 50% 50%; }
.season-autumn .particle.autumn-color-1 { background: var(--autumn-particle-1); }
.season-autumn .particle.autumn-color-2 { background: var(--autumn-particle-2); }
.season-autumn .particle.autumn-color-3 { background: var(--autumn-particle-3); }
.season-autumn .particle.autumn-color-4 { background: var(--autumn-particle-4); }
.season-autumn .particle.autumn-color-5 { background: var(--autumn-particle-5); }
.dark.season-autumn .particle.autumn-color-1 { background: var(--autumn-particle-1); }
.dark.season-autumn .particle.autumn-color-2 { background: var(--autumn-particle-2); }
.dark.season-autumn .particle.autumn-color-3 { background: var(--autumn-particle-3); }
.dark.season-autumn .particle.autumn-color-4 { background: var(--autumn-particle-4); }
.dark.season-autumn .particle.autumn-color-5 { background: var(--autumn-particle-5); }
@keyframes leaf-fall-clockwise {
  0% { opacity: 0; transform: translateY(-10vh) translate(0) rotate(0); }
  10% { opacity: 0.9; }
  25% { transform: translateY(20vh) translate(25px) rotate(90deg); }
  50% { transform: translateY(45vh) translate(-15px) rotate(180deg); }
  75% { transform: translateY(70vh) translate(30px) rotate(270deg); }
  90% { opacity: 0.6; }
  to { opacity: 0; transform: translateY(110vh) translate(-10px) rotate(360deg); }
}
@keyframes leaf-fall-counterclockwise {
  0% { opacity: 0; transform: translateY(-10vh) translate(0) rotate(0); }
  10% { opacity: 0.9; }
  25% { transform: translateY(20vh) translate(-25px) rotate(-90deg); }
  50% { transform: translateY(45vh) translate(15px) rotate(-180deg); }
  75% { transform: translateY(70vh) translate(-30px) rotate(-270deg); }
  90% { opacity: 0.6; }
  to { opacity: 0; transform: translateY(110vh) translate(10px) rotate(-360deg); }
}
.season-autumn .particle.clockwise { animation: leaf-fall-clockwise linear forwards; }
.season-autumn .particle.counterclockwise { animation: leaf-fall-counterclockwise linear forwards; }

/* --- 冬季雪花 --- */
@keyframes snow-fall {
  0% { opacity: 0; transform: translateY(-10vh) translate(0) rotate(0); }
  10% { opacity: 0.9; }
  50% { transform: translateY(45vh) translate(20px) rotate(180deg); }
  90% { opacity: 0.5; }
  to { opacity: 0; transform: translateY(110vh) translate(-10px) rotate(360deg); }
}
@keyframes snow-sway {
  0%, to { transform: translate(0); }
  25% { transform: translate(10px); }
  75% { transform: translate(-10px); }
}
@keyframes snow-spin {
  0% { transform: rotate(0); }
  to { transform: rotate(360deg); }
}
.season-winter .particle {
  opacity: 0;
  will-change: transform, opacity;
  border-radius: 50%;
  animation: snow-fall linear forwards;
  position: absolute;
  top: -20px;
}
.season-winter .particle.winter-particle-1 { background: var(--winter-particle-1); }
.season-winter .particle.winter-particle-2 { background: var(--winter-particle-2); }
.season-winter .particle.winter-particle-3 { background: var(--winter-particle-3); }
.season-winter .particle.winter-particle-4 { background: var(--winter-particle-4); }
.season-winter .particle.small { box-shadow: 0 0 3px rgba(255, 255, 255, 0.8); }
.season-winter .particle.medium { box-shadow: 0 0 4px 1px rgba(255, 255, 255, 0.9), 0 0 8px 3px rgba(255, 255, 255, 0.5); }
.season-winter .particle.large {
  animation: snow-fall linear forwards, 8s linear infinite snow-spin;
  box-shadow: 0 0 5px 2px rgba(255, 255, 255, 0.9), 0 0 10px 5px rgba(255, 255, 255, 0.5), 0 0 15px 8px rgba(255, 255, 255, 0.3);
}
.dark.season-winter .particle.winter-particle-1 { background: rgba(255, 255, 255, 0.9); box-shadow: 0 0 4px rgba(255, 255, 255, 0.6); }
.dark.season-winter .particle.winter-particle-2 { background: rgba(240, 248, 255, 0.8); box-shadow: 0 0 3px rgba(240, 248, 255, 0.5); }
.dark.season-winter .particle.winter-particle-3 { background: rgba(230, 230, 250, 0.7); box-shadow: 0 0 3px rgba(230, 230, 250, 0.4); }
.dark.season-winter .particle.winter-particle-4 { background: rgba(245, 245, 245, 0.85); box-shadow: 0 0 3px rgba(245, 245, 245, 0.5); }
.dark.season-winter .particle.large {
  box-shadow: 0 0 6px 2px rgba(255, 255, 255, 0.8), 0 0 12px 6px rgba(255, 255, 255, 0.4), 0 0 20px 10px rgba(255, 255, 255, 0.2);
}

/* ---------- 层级 ---------- */
.main-content,
.header,
.footer {
  z-index: 1;
  position: relative;
}

/* ---------- 头部 ---------- */
.header {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  z-index: 100;
  padding: 1.25rem 0;
  position: sticky;
  top: 0;
}
.header-content {
  max-width: 90rem;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.logo {
  color: var(--accent-color);
  align-items: center;
  gap: 0.5rem;
  font-size: 1.5rem;
  font-weight: 700;
  display: flex;
}
.logo-icon {
  font-size: 1.75rem;
}
/* 顶部北京时间：低调不突兀 */
.header-clock {
  color: var(--text-muted);
  font-size: 0.8125rem;
  font-weight: 400;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  margin-left: 0.5rem;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.search-container {
  max-width: 32rem;
  margin-top: 1rem;
  position: relative;
}
.search-input {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  background-color: var(--bg-card);
  width: 100%;
  color: var(--text-primary);
  outline: none;
  padding: 0.75rem 2.5rem 0.75rem 1rem;
  font-size: 0.875rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.search-input:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}
.search-icon {
  color: var(--text-muted);
  position: absolute;
  top: 50%;
  right: 1rem;
  transform: translateY(-50%);
}
.theme-toggle {
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: var(--radius-md);
  background: transparent;
  border: none;
  padding: 0.5rem;
  transition: background-color 0.2s, color 0.2s;
  position: absolute;
  top: 1.25rem;
  right: 1.5rem;
}
.theme-toggle:hover {
  background-color: var(--hover-color);
  color: var(--text-primary);
}

/* 新增：设置 / 编辑按钮（沿用 theme-toggle 风格） */
.header-btn {
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: var(--radius-md);
  background: transparent;
  border: none;
  padding: 0.5rem;
  font-size: 1rem;
  transition: background-color 0.2s, color 0.2s;
  position: absolute;
  top: 1.25rem;
  right: 3.75rem;
}
.header-btn:hover {
  background-color: var(--hover-color);
  color: var(--text-primary);
}
.header-btn.active {
  background-color: var(--accent-color);
  color: #fff;
}
#edit-toggle { right: 6.25rem; }
#notes-btn { right: 8.75rem; }

/* ---------- 主体 ---------- */
.main-content {
  flex: 1;
  max-width: 95%;
  margin: 0 auto;
  padding: 2.5rem 2rem;
  width: 100%;
}

/* 分类标签 */
.category-tabs {
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  display: flex;
}
.category-tab {
  border-radius: var(--radius-lg);
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
  cursor: pointer;
  border: none;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.2s;
  display: inline-flex;
}
.category-tab:hover {
  background-color: var(--hover-color);
  color: var(--text-primary);
}
.category-tab.active {
  background-color: var(--accent-color);
  color: #fff;
}
.category-count {
  background-color: rgba(0, 0, 0, 0.1);
  border-radius: 9999px;
  padding: 0.125rem 0.5rem;
  font-size: 0.75rem;
}
.category-tab.active .category-count {
  background-color: rgba(255, 255, 255, 0.2);
}

/* 统计栏 */
.stats-bar {
  color: var(--text-secondary);
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  font-size: 0.875rem;
  display: flex;
}

/* 站点网格 */
.sites-grid {
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: 1.5rem;
  display: grid;
}
@media (min-width: 640px) {
  .sites-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.75rem;
  }
}
@media (min-width: 1024px) {
  .sites-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 2rem;
  }
}
@media (min-width: 1280px) {
  .sites-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 2rem;
  }
}

/* 站点卡片 */
.site-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  cursor: pointer;
  align-items: flex-start;
  gap: 1rem;
  min-height: 8rem;
  padding: 1.5rem;
  transition: all 0.2s;
  display: flex;
  position: relative;
}
.site-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-color);
  transform: translateY(-2px);
}
.site-icon-wrapper {
  border-radius: var(--radius-xl);
  color: #fff;
  flex-shrink: 0;
  justify-content: center;
  align-items: center;
  width: 3.5rem;
  height: 3.5rem;
  font-size: 1.5rem;
  display: flex;
}
.site-info {
  flex: 1;
  min-width: 0;
}
.site-name {
  color: var(--text-primary);
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 10rem;
  margin-bottom: 0.25rem;
  font-size: 1.125rem;
  font-weight: 600;
  overflow: hidden;
}
.site-description {
  color: var(--text-secondary);
  -webkit-line-clamp: 1;
  text-overflow: ellipsis;
  -webkit-box-orient: vertical;
  max-width: 10rem;
  margin-bottom: 0.5rem;
  font-size: 0.9375rem;
  display: -webkit-box;
  overflow: hidden;
}
.site-url {
  color: var(--text-muted);
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 10rem;
  font-size: 0.8125rem;
  overflow: hidden;
}

/* 编辑模式下卡片的操作按钮 */
.site-card-actions {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  display: none;
  gap: 0.375rem;
}
.edit-mode .site-card-actions {
  display: flex;
}
.site-card-actions button {
  width: 1.75rem;
  height: 1.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: var(--bg-card);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8125rem;
  transition: all 0.2s;
}
.site-card-actions button:hover {
  color: #fff;
}
.site-card-actions .act-edit:hover { background-color: var(--accent-color); border-color: var(--accent-color); }
.site-card-actions .act-delete:hover { background-color: #ef4444; border-color: #ef4444; }

/* ---------- 加载 / 错误 / 空态 / 滚动提示 ---------- */
.loading-container {
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 4rem;
  display: flex;
}
.loading-spinner {
  border: 2px solid var(--border-color);
  border-top-color: var(--accent-color);
  border-radius: 50%;
  width: 3rem;
  height: 3rem;
  animation: 1s linear infinite spin;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}
.loading-text {
  color: var(--text-secondary);
  margin-top: 1rem;
}
.error-container {
  text-align: center;
  color: #ef4444;
  padding: 4rem;
}
.empty-state {
  text-align: center;
  color: var(--text-secondary);
  padding: 4rem;
}
.empty-icon {
  opacity: 0.5;
  margin-bottom: 1rem;
  font-size: 3rem;
}
.scroll-hint {
  color: var(--text-muted);
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 2rem;
  font-size: 0.875rem;
  animation: 2s infinite bounce;
  display: flex;
}
@keyframes bounce {
  0%, to { transform: translateY(0); }
  50% { transform: translateY(5px); }
}

/* ---------- 页脚 ---------- */
.footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  text-align: center;
  color: var(--text-muted);
  margin-top: auto;
  padding: 2rem 1.5rem;
  font-size: 0.875rem;
}
.footer-content {
  max-width: 90rem;
  margin: 0 auto;
}
.footer-row {
  justify-content: center;
  align-items: center;
  display: flex;
}
.footer-author {
  margin-bottom: 0.5rem;
}
.footer-author-name {
  color: var(--text-secondary);
  font-size: 1rem;
  font-weight: 600;
}
.footer-divider {
  background-color: var(--border-color);
  width: 3rem;
  height: 1px;
  margin: 0.75rem auto;
}
.footer-copyright {
  margin-bottom: 0.5rem;
}
.footer-record {
  font-size: 0.75rem;
}
.footer-record-number {
  color: var(--text-muted);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .footer-content {
    flex-direction: column;
    align-items: center;
    display: flex;
  }
  .footer-row {
    margin-bottom: 0.25rem;
  }
  .footer-divider {
    display: none;
  }
  .footer-author,
  .footer-copyright {
    margin-bottom: 0;
  }
  .header-content {
    justify-content: space-between;
    align-items: center;
    display: flex;
  }
  .search-container {
    margin-top: 0;
    margin-left: 2rem;
  }
  .theme-toggle,
  .header-btn,
  #edit-toggle {
    margin-left: 1rem;
    position: static;
  }
}

/* ---------- 季节选择器 ---------- */
.season-selector {
  align-items: center;
  gap: 0.75rem;
  display: flex;
  position: relative;
}
.season-indicators {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  gap: 0.25rem;
  padding: 0.25rem;
  display: flex;
}
.season-btn {
  border-radius: var(--radius-md);
  cursor: pointer;
  width: 2rem;
  height: 2rem;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  justify-content: center;
  align-items: center;
  transition: all 0.2s;
  display: flex;
}
.season-btn:hover {
  background: var(--hover-color);
  color: var(--text-primary);
}
.season-btn.active {
  background: var(--accent-color);
  color: #fff;
}
.season-btn .fas {
  font-size: 0.875rem;
}
.season-current {
  color: var(--text-secondary);
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.75rem;
  font-size: 0.875rem;
  display: flex;
}
.season-current .fas {
  font-size: 0.75rem;
}
@media (max-width: 640px) {
  .season-current span {
    display: none;
  }
  .season-current {
    padding: 0.5rem;
  }
}

/* ========================================================================
   以下为新增：管理功能样式（编辑模式 / 弹窗 / 表单 / 提示）
   ======================================================================== */

/* 编辑模式：管理工具栏 */
.admin-bar {
  display: none;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}
.edit-mode .admin-bar {
  display: flex;
}

/* 按钮 */
.btn {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  background-color: var(--bg-card);
  color: var(--text-secondary);
  cursor: pointer;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.2s;
  display: inline-flex;
}
.btn:hover {
  background-color: var(--hover-color);
  color: var(--text-primary);
}
.btn-primary {
  background-color: var(--accent-color);
  border-color: var(--accent-color);
  color: #fff;
}
.btn-primary:hover {
  opacity: 0.9;
  background-color: var(--accent-color);
  color: #fff;
}
.btn-danger {
  background-color: #ef4444;
  border-color: #ef4444;
  color: #fff;
}
.btn-danger:hover {
  opacity: 0.9;
  background-color: #ef4444;
  color: #fff;
}
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* 分类标签上的编辑/删除小按钮（编辑模式） */
.cat-actions {
  display: none;
  align-items: center;
  gap: 0.25rem;
  margin-left: 0.25rem;
}
.edit-mode .cat-actions {
  display: inline-flex;
}
.cat-actions .cat-act {
  cursor: pointer;
  width: 1.125rem;
  height: 1.125rem;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.625rem;
  transition: all 0.2s;
}
.cat-actions .cat-act:hover {
  background-color: rgba(255, 255, 255, 0.2);
}
.category-tab:not(.active) .cat-actions .cat-act:hover {
  background-color: var(--hover-color);
  color: var(--text-primary);
}

/* 拖拽排序（编辑模式） */
.site-card[draggable='true'],
.category-tab[draggable='true'] {
  cursor: grab;
}
.site-card.dragging,
.category-tab.dragging {
  opacity: 0.45;
  border-style: dashed;
}
.site-card.drag-over,
.category-tab.drag-over {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.2);
}

/* ---------- 弹窗 ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background-color: rgba(15, 23, 42, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  backdrop-filter: blur(2px);
}
.modal-overlay[hidden] {
  display: none;
}
.modal {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 26rem;
  max-height: 90vh;
  overflow: hidden;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
}
.modal.modal-wide {
  max-width: 32rem;
}
/* 弹窗标题栏：标题 + 右上角常驻关闭按钮（不随内容滚动） */
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
  flex-shrink: 0;
}
.modal-header .modal-title {
  margin-bottom: 0;
}
.modal-close {
  width: 2rem;
  height: 2rem;
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: all 0.2s;
  flex-shrink: 0;
}
.modal-close:hover {
  background-color: var(--hover-color);
  color: var(--text-primary);
}
.modal-body {
  overflow-y: auto;
  flex: 1;
  min-height: 0;
}
.modal-title {
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  font-size: 1.125rem;
  font-weight: 600;
}
.modal-desc {
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  font-size: 0.875rem;
  line-height: 1.6;
}
.modal-actions {
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 1.25rem;
  display: flex;
}
.modal-error {
  color: #ef4444;
  min-height: 1.25rem;
  margin-top: 0.75rem;
  font-size: 0.8125rem;
  word-break: break-all;
}
.modal-success {
  color: #22c55e;
  min-height: 1.25rem;
  margin-top: 0.75rem;
  font-size: 0.8125rem;
}

/* ---------- 表单 ---------- */
.form-field {
  margin-bottom: 1rem;
}
.form-field label {
  color: var(--text-secondary);
  margin-bottom: 0.375rem;
  font-size: 0.8125rem;
  font-weight: 500;
  display: block;
}
.form-field input[type='text'],
.form-field input[type='url'],
.form-field input[type='password'],
.form-field textarea,
.form-field select {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  width: 100%;
  outline: none;
  padding: 0.625rem 0.75rem;
  font-size: 0.875rem;
  font-family: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}
.form-field textarea {
  resize: vertical;
  min-height: 4.5rem;
}
.form-field select option {
  background-color: var(--bg-card);
  color: var(--text-primary);
}
.form-row {
  display: flex;
  gap: 1rem;
}
.form-row .form-field {
  flex: 1;
}

/* 颜色选择 */
.color-input-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.color-input-row input[type='color'] {
  width: 2.75rem;
  height: 2.25rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  padding: 2px;
  cursor: pointer;
}
.color-palette {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  margin-top: 0.625rem;
}
.color-swatch {
  width: 1.5rem;
  height: 1.5rem;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s;
}
.color-swatch:hover {
  transform: scale(1.15);
}
.color-swatch.selected {
  border-color: var(--text-primary);
  box-shadow: 0 0 0 2px var(--bg-card) inset;
}

/* 图标选择预览 */
.icon-preview {
  border-radius: var(--radius-md);
  color: #fff;
  width: 2.25rem;
  height: 2.25rem;
  align-items: center;
  justify-content: center;
  display: inline-flex;
  font-size: 1rem;
  margin-left: 0.5rem;
  vertical-align: middle;
  overflow: hidden;
}
.icon-preview img,
.site-icon-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 0.375rem;
  border-radius: inherit;
  display: block;
}

/* 分类图标可视化宫格 */
.icon-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(2.25rem, 1fr));
  gap: 0.375rem;
  max-height: 10rem;
  overflow-y: auto;
  padding: 0.375rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
}
.icon-option {
  height: 2.25rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: all 0.15s;
}
.icon-option:hover {
  border-color: var(--accent-color);
  color: var(--text-primary);
}
.icon-option.active {
  background: var(--accent-color);
  color: #fff;
  border-color: var(--accent-color);
}

/* 站点表单：自动图标与配色预览 */
.site-icon-preview {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding-top: 0.375rem;
}
.site-icon-preview .icon-preview {
  margin-left: 0;
  flex-shrink: 0;
}
.auto-hint {
  color: var(--text-muted);
  font-size: 0.75rem;
  line-height: 1.5;
}

/* ---------- 设置弹窗 ---------- */
.settings-section {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  margin-bottom: 1.25rem;
  padding: 1.25rem;
}
.settings-section-title {
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  font-size: 0.9375rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.settings-section-title i {
  color: var(--accent-color);
}
.settings-tip {
  color: var(--text-muted);
  font-size: 0.75rem;
  margin-top: 0.5rem;
  line-height: 1.5;
}

/* 导入文件选择 */
.file-input-wrap {
  position: relative;
  margin-bottom: 0.625rem;
}
.file-input-wrap input[type='file'] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}
.file-input-label {
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
  text-align: center;
  padding: 0.875rem;
  font-size: 0.8125rem;
  cursor: pointer;
  transition: all 0.2s;
}
.file-input-label:hover {
  border-color: var(--accent-color);
  color: var(--text-primary);
}
.file-input-label.has-file {
  border-color: var(--accent-color);
  color: var(--text-primary);
}

/* ---------- 记事本 ---------- */
.notes-panel {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 72rem;
  height: 92vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: max-width 0.2s ease;
}
.modal-overlay#notes-overlay {
  padding: 1rem;
}
/* 锁定态：紧凑小卡片 */
.notes-panel.notes-locked {
  max-width: 22rem;
  height: auto;
}
.notes-lock {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.625rem;
  padding: 1.5rem 1.5rem 1.75rem;
  text-align: center;
}
.notes-lock .notes-title {
  font-size: 1.125rem;
}
.notes-lock .notes-tip {
  font-size: 0.75rem;
  max-width: 18rem;
}
.notes-lock input[type='password'] {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  width: 100%;
  padding: 0.625rem 0.75rem;
  font-size: 0.875rem;
  outline: none;
}
.notes-lock input[type='password']:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}
.notes-title {
  color: var(--text-primary);
  font-size: 1.25rem;
  font-weight: 600;
}
.notes-tip {
  color: var(--text-secondary);
  font-size: 0.8125rem;
  text-align: center;
  max-width: 26rem;
  line-height: 1.6;
}

/* 主界面：顶栏 + 左列表 + 右编辑器 */
.notes-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 0;
}
.notes-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
}
.notes-header .notes-title {
  font-size: 1.125rem;
}
.notes-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.notes-body {
  flex: 1;
  display: flex;
  min-height: 0;
}
.notes-list {
  width: 16rem;
  flex-shrink: 0;
  overflow-y: auto;
  border-right: 1px solid var(--border-color);
  padding: 0.75rem;
  background: var(--bg-secondary);
}
.notes-list-empty {
  color: var(--text-muted);
  font-size: 0.8125rem;
  text-align: center;
  padding: 1.5rem 0.5rem;
  line-height: 1.7;
}
.notes-list-empty i {
  display: block;
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
  opacity: 0.5;
}
.note-item {
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  padding: 0.625rem 0.75rem;
  margin-bottom: 0.375rem;
  cursor: pointer;
  transition: all 0.15s;
}
.note-item:hover {
  background: var(--hover-color);
}
.note-item.active {
  background: var(--bg-card);
  border-color: var(--accent-color);
}
.note-item .note-title {
  color: var(--text-primary);
  font-size: 0.875rem;
  font-weight: 500;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
}
.note-item .note-snippet {
  color: var(--text-secondary);
  font-size: 0.75rem;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
  margin-top: 0.125rem;
}
.note-item .note-time {
  color: var(--text-muted);
  font-size: 0.6875rem;
  margin-top: 0.25rem;
}

/* 右侧编辑器 */
.notes-editor {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 1rem 1.25rem;
  min-width: 0;
}
.notes-editor input[type='text'],
.notes-editor textarea {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  width: 100%;
  padding: 0.625rem 0.75rem;
  font-size: 0.875rem;
  font-family: inherit;
  outline: none;
}
.notes-editor input[type='text']:focus,
.notes-editor textarea:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}
.notes-editor input[type='text'] {
  flex-shrink: 0;
  margin-bottom: 0.75rem;
}
.notes-editor textarea {
  flex: 1;
  min-height: 0;
  resize: none;
}
.notes-editor-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.75rem;
}
@media (max-width: 640px) {
  .notes-body {
    flex-direction: column;
  }
  .notes-list {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border-color);
    max-height: 30vh;
  }
  .notes-editor textarea {
    min-height: 8rem;
  }
}

/* ---------- Toast 提示 ---------- */
.toast-container {
  position: fixed;
  top: 1.25rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: center;
  pointer-events: none;
}
.toast {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  color: var(--text-primary);
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  animation: toast-in 0.25s ease;
}
.toast.toast-success {
  border-color: #22c55e;
  color: #22c55e;
}
.toast.toast-error {
  border-color: #ef4444;
  color: #ef4444;
}
@keyframes toast-in {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}