/* ============================================
   倒计时单页面模板 - 简约大气风格
   ============================================ */

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

:root {
  /* 色彩系统 */
  --bg-primary: #0a0a0f;
  --bg-secondary: #111119;
  --text-primary: #f0f0f5;
  --text-secondary: rgba(240, 240, 245, 0.5);
  --text-muted: rgba(240, 240, 245, 0.25);
  --accent: #6366f1;
  --accent-glow: rgba(99, 102, 241, 0.3);
  --accent-secondary: #818cf8;
  --separator-color: rgba(240, 240, 245, 0.15);

  /* 间距 */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* 字体 */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
  --font-weight-light: 200;
  --font-weight-normal: 300;
  --font-weight-medium: 400;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
}

/* ---------- 页面基础 ---------- */
html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow: hidden;
  position: relative;
}

#app {
  min-height: 100vh;
  position: relative;
}

/* ---------- 背景装饰 ---------- */
.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

.bg-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
}

.bg-orb--1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-glow), transparent 70%);
  top: -200px;
  right: -150px;
  animation: float-orb 20s ease-in-out infinite;
}

.bg-orb--2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.15), transparent 70%);
  bottom: -200px;
  left: -100px;
  animation: float-orb 25s ease-in-out infinite reverse;
}

.bg-orb--3 {
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.12), transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: float-orb 18s ease-in-out infinite 5s;
}

@keyframes float-orb {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(30px, -40px) scale(1.05); }
  50% { transform: translate(-20px, 20px) scale(0.95); }
  75% { transform: translate(15px, 35px) scale(1.02); }
}

/* ---------- 主内容 ---------- */
.main-wrapper {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: var(--space-xl);
  text-align: center;
}

/* ---------- 标题区域 ---------- */
.header {
  margin-bottom: var(--space-3xl);
  animation: fadeInDown 0.8s ease-out;
}

.header__label {
  font-size: 0.75rem;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.3em;
  color: var(--accent-secondary);
  text-transform: uppercase;
  margin-bottom: var(--space-md);
  position: relative;
  display: inline-block;
}

.header__label::before,
.header__label::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 40px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-secondary));
}

.header__label::before {
  right: calc(100% + 12px);
  background: linear-gradient(90deg, transparent, var(--accent-secondary));
}

.header__label::after {
  left: calc(100% + 12px);
  background: linear-gradient(270deg, transparent, var(--accent-secondary));
}

.header__title {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: var(--font-weight-light);
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: var(--space-sm);
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header__subtitle {
  font-size: clamp(0.875rem, 1.5vw, 1.125rem);
  font-weight: var(--font-weight-normal);
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}

/* ---------- 倒计时区域 ---------- */
.countdown {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(0.5rem, 2vw, 1.5rem);
  margin-bottom: var(--space-3xl);
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.countdown__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
}

.countdown__number-wrap {
  position: relative;
  width: clamp(70px, 15vw, 140px);
  height: clamp(80px, 17vw, 160px);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 16px;
  backdrop-filter: blur(10px);
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.countdown__number-wrap:hover {
  border-color: rgba(99, 102, 241, 0.2);
  box-shadow: 0 0 30px rgba(99, 102, 241, 0.08);
}

.countdown__number-wrap::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-glow), transparent);
  opacity: 0.5;
}

.countdown__number {
  font-size: clamp(2rem, 7vw, 5rem);
  font-weight: var(--font-weight-bold);
  line-height: 1;
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(180deg, var(--text-primary) 0%, rgba(240, 240, 245, 0.7) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.countdown__number.flip {
  transform: scale(1.08);
}

.countdown__label {
  font-size: clamp(0.625rem, 1vw, 0.8125rem);
  font-weight: var(--font-weight-medium);
  color: var(--text-muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.countdown__separator {
  font-size: clamp(1.5rem, 5vw, 3.5rem);
  font-weight: var(--font-weight-light);
  color: var(--separator-color);
  line-height: 1;
  padding-bottom: var(--space-xl);
  animation: pulse-separator 2s ease-in-out infinite;
}

@keyframes pulse-separator {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* ---------- 进度条 ---------- */
.progress {
  width: min(600px, 80vw);
  height: 2px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 1px;
  overflow: hidden;
  margin-bottom: var(--space-2xl);
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

.progress__bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-secondary));
  border-radius: 1px;
  transition: width 1s ease-out;
  position: relative;
}

.progress__bar::after {
  content: '';
  position: absolute;
  right: 0;
  top: -1px;
  width: 6px;
  height: 4px;
  background: var(--accent-secondary);
  border-radius: 2px;
  box-shadow: 0 0 10px var(--accent-glow);
}

/* ---------- 底部 ---------- */
.footer {
  animation: fadeInUp 0.8s ease-out 0.6s both;
}

.footer__text {
  font-size: 0.75rem;
  font-weight: var(--font-weight-normal);
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

/* ---------- 动画 ---------- */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 倒计时结束状态 ---------- */
.countdown--ended .countdown__number-wrap {
  border-color: rgba(99, 102, 241, 0.3);
  box-shadow: 0 0 40px rgba(99, 102, 241, 0.15);
}

.countdown--ended .header__title {
  background: linear-gradient(135deg, var(--accent-secondary), #f472b6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- 响应式 ---------- */
@media (max-width: 640px) {
  .main-wrapper {
    padding: var(--space-lg);
  }

  .header__label::before,
  .header__label::after {
    width: 25px;
  }

  .countdown__number-wrap {
    border-radius: 12px;
  }

  .countdown__separator {
    padding-bottom: var(--space-lg);
  }
}

@media (max-width: 380px) {
  .countdown {
    gap: 0.25rem;
  }

  .countdown__number-wrap {
    border-radius: 10px;
  }
}

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

  .bg-orb {
    display: none;
  }
}