/* base.css - 双重主题色系统 */

:root {
  /* 字体 */
  --font-display: "Inter", -apple-system, sans-serif;
  --font-body: "Inter", -apple-system, sans-serif;

  /* 默认：暗色背景 + 霓虹蓝紫 */
  --bg-primary: #000000;
  --bg-secondary: #0a0a0f;
  --accent: #6366f1;
  --accent-glow: rgba(99, 102, 241, 0.5);
  --accent-secondary: #a855f7;

  /* 文字颜色（随背景主题变化） */
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.6);
  --text-tertiary: rgba(255, 255, 255, 0.3);

  /* 圆角 */
  --radius-full: 9999px;
  --radius-lg: 24px;

  /* 动画 */
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========== 背景主题（独立控制）========== */

/* 暗色背景（默认） */
body[data-bg="dark"],
body:not([data-bg]) {
  --bg-primary: #000000;
  --bg-secondary: #0a0a0f;
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.6);
  --text-tertiary: rgba(255, 255, 255, 0.3);

  /* 按钮和控件 */
  --btn-bg: rgba(255, 255, 255, 0.05);
  --btn-bg-hover: rgba(255, 255, 255, 0.1);
  --btn-border: rgba(255, 255, 255, 0.1);
  --btn-border-hover: rgba(255, 255, 255, 0.25);
  --progress-bg: rgba(255, 255, 255, 0.1);
}

/* 亮色背景 */
body[data-bg="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #e2e8f0;
  --text-primary: #0f172a;
  --text-secondary: rgba(15, 23, 42, 0.7);
  --text-tertiary: rgba(15, 23, 42, 0.4);

  /* 按钮和控件 */
  --btn-bg: rgba(15, 23, 42, 0.08);
  --btn-bg-hover: rgba(15, 23, 42, 0.15);
  --btn-border: rgba(15, 23, 42, 0.15);
  --btn-border-hover: rgba(15, 23, 42, 0.3);
  --progress-bg: rgba(15, 23, 42, 0.12);
}

/* 暖色背景 */
body[data-bg="warm"] {
  --bg-primary: #1a1412;
  --bg-secondary: #27201c;
  --text-primary: #fef3f2;
  --text-secondary: rgba(254, 243, 242, 0.7);
  --text-tertiary: rgba(254, 243, 242, 0.4);

  /* 按钮和控件 */
  --btn-bg: rgba(254, 243, 242, 0.06);
  --btn-bg-hover: rgba(254, 243, 242, 0.12);
  --btn-border: rgba(254, 243, 242, 0.12);
  --btn-border-hover: rgba(254, 243, 242, 0.25);
  --progress-bg: rgba(254, 243, 242, 0.1);
}

/* 深紫背景 */
body[data-bg="purple"] {
  --bg-primary: #0f0a1a;
  --bg-secondary: #1a0f2e;
  --text-primary: #f3f0ff;
  --text-secondary: rgba(243, 240, 255, 0.7);
  --text-tertiary: rgba(243, 240, 255, 0.4);

  /* 按钮和控件 */
  --btn-bg: rgba(243, 240, 255, 0.06);
  --btn-bg-hover: rgba(243, 240, 255, 0.12);
  --btn-border: rgba(243, 240, 255, 0.12);
  --btn-border-hover: rgba(243, 240, 255, 0.25);
  --progress-bg: rgba(243, 240, 255, 0.1);
}

/* ========== 强调色主题（独立控制）========== */

/* 霓虹蓝紫（默认） */
body[data-accent="blue"],
body:not([data-accent]) {
  --accent: #6366f1;
  --accent-glow: rgba(99, 102, 241, 0.5);
  --accent-secondary: #a855f7;
}

/* 赛博粉 */
body[data-accent="pink"] {
  --accent: #ec4899;
  --accent-glow: rgba(236, 72, 153, 0.5);
  --accent-secondary: #f472b6;
}

/* 霓虹青 */
body[data-accent="cyan"] {
  --accent: #06b6d4;
  --accent-glow: rgba(6, 182, 212, 0.5);
  --accent-secondary: #22d3ee;
}

/* 电光绿 */
body[data-accent="green"] {
  --accent: #10b981;
  --accent-glow: rgba(16, 185, 129, 0.5);
  --accent-secondary: #34d399;
}

/* 日落橙 */
body[data-accent="orange"] {
  --accent: #f97316;
  --accent-glow: rgba(249, 115, 22, 0.5);
  --accent-secondary: #fb923c;
}

/* 紫罗兰 */
body[data-accent="violet"] {
  --accent: #8b5cf6;
  --accent-glow: rgba(139, 92, 246, 0.5);
  --accent-secondary: #a78bfa;
}

/* 玫瑰红 */
body[data-accent="rose"] {
  --accent: #f43f5e;
  --accent-glow: rgba(244, 63, 94, 0.5);
  --accent-secondary: #fb7185;
}

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  color: var(--text-primary);
  background: var(--bg-primary);
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: hidden;
  overflow-y: auto;
  position: relative;
  transition: background-color 0.6s ease, color 0.4s ease;
}

/* 星空背景 - 多色彩更密集版本 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    /* 白色星星 - 主要星光 */
    radial-gradient(2px 2px at 20% 30%, white, transparent),
    radial-gradient(1px 1px at 60% 70%, white, transparent),
    radial-gradient(1px 1px at 80% 10%, white, transparent),
    radial-gradient(2px 2px at 15% 80%, white, transparent),
    radial-gradient(1px 1px at 45% 15%, white, transparent),
    radial-gradient(2px 2px at 75% 85%, white, transparent),
    radial-gradient(1px 1px at 30% 45%, white, transparent),
    radial-gradient(1px 1px at 88% 55%, white, transparent),
    /* 蓝色星星 */
    radial-gradient(2px 2px at 40% 20%, rgba(99, 102, 241, 0.7), transparent),
    radial-gradient(1px 1px at 70% 50%, rgba(99, 102, 241, 0.5), transparent),
    radial-gradient(1px 1px at 12% 65%, rgba(99, 102, 241, 0.6), transparent),
    radial-gradient(2px 2px at 55% 88%, rgba(99, 102, 241, 0.5), transparent),
    /* 紫色星星 */
    radial-gradient(2px 2px at 85% 65%, rgba(168, 85, 247, 0.6), transparent),
    radial-gradient(1px 1px at 25% 60%, rgba(168, 85, 247, 0.5), transparent),
    radial-gradient(1px 1px at 65% 35%, rgba(168, 85, 247, 0.4), transparent),
    radial-gradient(2px 2px at 8% 25%, rgba(168, 85, 247, 0.5), transparent),
    /* 青色星星 */
    radial-gradient(1px 1px at 50% 85%, rgba(34, 211, 238, 0.6), transparent),
    radial-gradient(1px 1px at 92% 15%, rgba(34, 211, 238, 0.5), transparent),
    radial-gradient(2px 2px at 35% 75%, rgba(34, 211, 238, 0.4), transparent),
    /* 粉色星星 */
    radial-gradient(1px 1px at 90% 40%, rgba(244, 114, 182, 0.5), transparent),
    radial-gradient(1px 1px at 18% 90%, rgba(244, 114, 182, 0.4), transparent),
    radial-gradient(2px 2px at 62% 12%, rgba(244, 114, 182, 0.5), transparent);
  background-size: 200% 200%;
  background-position:
    0% 0%, 100% 100%, 100% 0%, 0% 100%,
    50% 50%, 0% 50%, 100% 50%, 50% 0%,
    50% 100%, 25% 75%, 75% 25%, 20% 60%,
    80% 20%, 60% 80%, 40% 40%, 10% 90%,
    90% 10%, 30% 30%, 70% 70%, 15% 50%,
    85% 50%, 50% 20%, 50% 80%;
  animation: starMove 60s ease-in-out infinite;
  opacity: 0.6;
  pointer-events: none;
  transition: opacity 0.6s ease;
}

/* 亮色背景时减弱星空 */
body[data-bg="light"]::before {
  opacity: 0.15;
}

@keyframes starMove {
  0%, 100% {
    background-position:
      0% 0%, 100% 100%, 100% 0%, 0% 100%,
      50% 50%, 0% 50%, 100% 50%, 50% 0%,
      50% 100%, 25% 75%, 75% 25%, 20% 60%,
      80% 20%, 60% 80%, 40% 40%, 10% 90%,
      90% 10%, 30% 30%, 70% 70%, 15% 50%,
      85% 50%, 50% 20%, 50% 80%;
  }
  50% {
    background-position:
      100% 100%, 0% 0%, 0% 100%, 100% 0%,
      70% 30%, 100% 50%, 0% 50%, 30% 100%,
      70% 0%, 75% 25%, 25% 75%, 80% 40%,
      20% 80%, 40% 20%, 60% 60%, 90% 10%,
      10% 90%, 70% 70%, 30% 30%, 85% 50%,
      15% 50%, 50% 80%, 50% 20%;
  }
}

/* 中央光晕 - 随强调色变化 */
body::after {
  content: "";
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  animation: glowPulse 4s ease-in-out infinite;
  pointer-events: none;
  z-index: 0;
  transition: opacity 0.6s ease;
}

/* 亮色背景时减弱光晕 */
body[data-bg="light"]::after {
  opacity: 0.3;
}

@keyframes glowPulse {
  0%, 100% {
    opacity: 0.3;
    transform: translate(-50%, -50%) scale(1);
  }
  50% {
    opacity: 0.6;
    transform: translate(-50%, -50%) scale(1.1);
  }
}

button {
  font-family: inherit;
  border: none;
  cursor: pointer;
  background: none;
}

img {
  display: block;
  max-width: 100%;
}

/* 全局动画 */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* 主题切换按钮 */
.theme-btn {
  position: fixed;
  top: 40px;
  right: 40px;
  z-index: 100;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--btn-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--btn-border);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s var(--ease-smooth);
}

.theme-btn:hover {
  background: var(--btn-bg-hover);
  color: var(--accent);
  border-color: var(--btn-border-hover);
  transform: scale(1.05) rotate(90deg);
}

.theme-btn:active {
  transform: scale(0.95) rotate(90deg);
}

.theme-btn svg {
  width: 20px;
  height: 20px;
  transition: transform 0.3s var(--ease-smooth);
}

.theme-btn:hover svg {
  transform: rotate(180deg);
}

/* 全屏按钮 */
.fullscreen-btn {
  position: fixed;
  top: 40px;
  right: 176px;
  z-index: 100;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--btn-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--btn-border);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s var(--ease-smooth);
}

.fullscreen-btn:hover {
  background: var(--btn-bg-hover);
  color: var(--accent);
  border-color: var(--btn-border-hover);
  transform: scale(1.05);
}

.fullscreen-btn:active {
  transform: scale(0.95);
}

.fullscreen-btn svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
}

/* 背景主题切换按钮 */
.bg-btn {
  position: fixed;
  top: 40px;
  right: 108px;
  z-index: 100;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--btn-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--btn-border);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s var(--ease-smooth);
}

.bg-btn:hover {
  background: var(--btn-bg-hover);
  color: var(--accent);
  border-color: var(--btn-border-hover);
  transform: scale(1.05);
}

.bg-btn:active {
  transform: scale(0.95);
}

.bg-btn svg {
  width: 20px;
  height: 20px;
  transition: transform 0.3s var(--ease-smooth);
}

@media (max-width: 768px) {
  /* 角落按钮缩小 */
  .theme-btn,
  .bg-btn,
  .fullscreen-btn {
    top: 20px;
    width: 40px;
    height: 40px;
  }

  .theme-btn {
    right: 20px;
  }

  .bg-btn {
    right: 75px;
  }

  .fullscreen-btn {
    right: 130px;
  }

  .theme-btn svg,
  .bg-btn svg,
  .fullscreen-btn svg {
    width: 18px;
    height: 18px;
  }
}

@media (max-width: 480px) {
  /* 小屏幕：隐藏全屏按钮 */
  .fullscreen-btn {
    display: none;
  }

  .bg-btn {
    right: 75px;
  }

  .theme-btn {
    right: 20px;
  }
}