/**
 * 恋爱时光轴 & 漫游宇宙 (Love Universe)
 * 文件名: css/base.css
 */

:root {
  --primary-pink: #f43f5e;
  --primary-pink-hover: #e11d48;
  --rose-gold: #fb7185;
  --rose-gold-glow: rgba(251, 113, 133, 0.35);
  
  --sun-gold: #f59e0b;
  --sun-gold-glow: rgba(245, 158, 11, 0.35);
  --warm-amber: #fef3c7;

  --space-dark: #070a14;
  --space-navy: #0b1120;
  --space-card: rgba(20, 20, 38, 0.72);
  
  --glass-border: rgba(255, 255, 255, 0.14);
  --glass-shine: rgba(255, 255, 255, 0.25);
  --glass-shadow: 0 16px 36px -8px rgba(0, 0, 0, 0.6);
  
  --polaroid-paper: #ffffff;
  --polaroid-shadow: 0 12px 28px rgba(0, 0, 0, 0.35), 0 4px 10px rgba(0, 0, 0, 0.2);
  
  --text-pure: #ffffff;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dark: #1f2937;
  
  --stamp-red: #dc2626;
  --stamp-red-glow: rgba(220, 38, 38, 0.4);
  --success-green: #10b981;
  
  --ease-spring: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  background-color: var(--space-dark);
  color: var(--text-main);
  min-height: 100vh;
  min-height: -webkit-fill-available;
  overflow-x: hidden;
  position: relative;
  line-height: 1.6;
  padding-bottom: env(safe-area-inset-bottom);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  user-select: none;
  -webkit-user-drag: none;
}

button, input, textarea {
  font-family: inherit;
  outline: none;
  border: none;
  background: none;
}

/* 🌅 微醺星河暖色暮光背景 */
.universe-body {
  background: 
    radial-gradient(circle at 50% -10%, rgba(244, 63, 94, 0.22) 0%, transparent 60%),
    radial-gradient(circle at 85% 25%, rgba(245, 158, 11, 0.14) 0%, transparent 50%),
    radial-gradient(circle at 15% 70%, rgba(168, 85, 247, 0.12) 0%, transparent 55%),
    linear-gradient(180deg, #14172a 0%, #090c19 50%, #050711 100%);
}

.main-container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 24px 18px 80px;
  position: relative;
  z-index: 10;
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.8s var(--ease-spring), transform 0.8s var(--ease-spring);
}

.main-container--hidden {
  opacity: 0;
  transform: translateY(30px);
  pointer-events: none;
  display: none;
}

.section-title {
  text-align: center;
  margin-bottom: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.section-title__icon {
  font-size: 28px;
  filter: drop-shadow(0 0 10px var(--rose-gold-glow));
}

.section-title__text {
  font-size: 22px;
  font-weight: 900;
  letter-spacing: 0.5px;
  background: linear-gradient(135deg, #ffffff 0%, #fde68a 50%, #fb7185 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 20px rgba(251, 113, 133, 0.3);
}

.section-title__desc {
  font-size: 12.5px;
  color: var(--text-muted);
  font-weight: 600;
}

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: rgba(7, 10, 20, 0.8);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--rose-gold), var(--primary-pink));
  border-radius: 6px;
  box-shadow: 0 0 8px var(--rose-gold-glow);
}