/* ====== 旅行小助手 — 高端旅行杂志风 ====== */
@import url('https://fonts.googleapis.com/css2?family=Liu+Jian+Mao+Cao&display=swap');
.font-flow { font-family: 'Liu Jian Mao Cao', cursive; font-weight:400; }
:root {
  --bg: #0A1628; --card-bg: #1A2A3A; --white: #FFFFFF;
  --gold: #E8B84B; --gold-h: #D4A838; --gold-l: #F5D88A;
  --red: #FF6B6B; --gray: #8899AA; --gray-d: #5A6A7A;
  --shadow: 0 4px 20px rgba(0,0,0,0.3);
  --shadow-gold: 0 4px 20px rgba(232,184,75,0.15);
  --radius: 12px; --radius-sm: 6px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC", sans-serif;
  --transition: 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font); background: var(--bg); color: var(--gray);
  line-height: 1.6; padding-bottom: 70px; min-height: 100vh;
}
a { color: var(--gold); transition: color var(--transition); }
a:hover { color: var(--gold-l); }

/* ====== Header ====== */
.header {
  background: rgba(10,22,40,0.95); backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(232,184,75,0.1);
  padding: 16px; position: sticky; top: 0; z-index: 100;
  animation: slideDown 0.3s ease;
}
.header h1 { font-size: 1.05rem; font-weight: 700; color: var(--gold); text-align: center; letter-spacing: 0.5px; cursor: pointer; }

/* ====== 底部 Tab ====== */
.tab-bar {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 100;
  display: flex; background: rgba(10,22,40,0.95); backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid rgba(232,184,75,0.1);
  padding: 6px 0 env(safe-area-inset-bottom);
  animation: slideUp 0.3s ease;
}
.tab-btn {
  flex: 1; border: none; background: none; padding: 6px 0;
  font-size: 0.65rem; color: var(--gray); cursor: pointer;
  font-family: var(--font); transition: color var(--transition);
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  position: relative;
}
.tab-btn .tab-icon { font-size: 1.15rem; }
.tab-btn span:last-child { font-size: 0.6rem; letter-spacing: 0.5px; }
.tab-btn::after {
  content: ''; position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: 0; height: 2px; background: var(--gold); transition: width var(--transition);
  border-radius: 0 0 2px 2px;
}
.tab-btn.active { color: var(--gold); }
.tab-btn.active::after { width: 30px; }
.tab-content { display: none; padding: 16px; }
.tab-content.active { display: block; }

/* ====== Hero 横幅 ====== */
.hero-banner {
  position: relative; width: 100%; height: 180px;
  border-radius: var(--radius); overflow: hidden; margin-bottom: 16px;
  background: linear-gradient(135deg, #1A2A3A 0%, #2A3A4A 100%);
}
.hero-banner img {
  width: 100%; height: 100%; object-fit: cover; opacity: 0.6;
}
.hero-banner .hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(10,22,40,0.8) 0%, transparent 100%);
}
.hero-banner .hero-text {
  position: absolute; bottom: 16px; left: 16px; right: 16px;
  color: var(--white); z-index: 1;
}
.hero-banner .hero-text h2 { font-size: 1.2rem; font-weight: 700; margin-bottom: 4px; }
.hero-banner .hero-text p { font-size: 0.82rem; color: var(--gray); }

/* ====== 卡片 ====== */
.card {
  background: var(--card-bg); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 16px; margin-bottom: 16px;
  border: 1px solid rgba(255,255,255,0.05);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.card:hover {
  transform: translateY(-2px); box-shadow: var(--shadow-gold);
  border-color: rgba(232,184,75,0.2);
}
.card-title { font-size: 1rem; font-weight: 700; color: var(--white); margin-bottom: 4px; }
.card-sub { font-size: 0.82rem; color: var(--gray); }

/* ====== 标签 ====== */
.tag { display: inline-block; padding: 2px 10px; background: rgba(232,184,75,0.15); color: var(--gold); border-radius: 3px; font-size: 0.72rem; letter-spacing: 0.3px; margin-right: 4px; margin-bottom: 4px; }

/* ====== 按钮 ====== */
.btn { padding: 10px 24px; border: none; border-radius: var(--radius-sm); font-size: 0.9rem; cursor: pointer; font-weight: 600; font-family: var(--font); transition: all var(--transition); }
.btn-primary { background: linear-gradient(135deg, var(--gold), var(--gold-h)); color: #0A1628; }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 4px 15px rgba(232,184,75,0.3); }
.btn-secondary { background: transparent; color: var(--gray); border: 1px solid rgba(255,255,255,0.1); }
.btn-secondary:hover { border-color: var(--gold); color: var(--gold); }

/* ====== 表单 ====== */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 0.82rem; font-weight: 600; color: var(--gray); margin-bottom: 6px; letter-spacing: 0.3px; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 10px 14px;
  background: rgba(0,0,0,0.3); border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-sm); font-size: 0.9rem; outline: none;
  font-family: var(--font); color: var(--white); transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  border-color: var(--gold); box-shadow: 0 0 0 3px rgba(232,184,75,0.1);
}
.form-group textarea { min-height: 60px; resize: vertical; }
.form-group select { appearance: auto; background: rgba(0,0,0,0.3); }
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--gray-d); }

/* ====== 费用条目 ====== */
.expense-row { display: flex; gap: 8px; align-items: center; margin-bottom: 8px; }
.expense-row input[type=number] { width: 80px; flex-shrink: 0; padding: 8px; background: rgba(0,0,0,0.3); border: 1px solid rgba(255,255,255,0.08); border-radius: var(--radius-sm); color: var(--white); font-size: 0.84rem; outline: none; }
.expense-row select { width: 110px; flex-shrink: 0; padding: 8px; border: 1px solid rgba(255,255,255,0.08); border-radius: var(--radius-sm); font-size: 0.82rem; background: rgba(0,0,0,0.3); color: var(--white); outline: none; }
.btn-remove { background: none; border: none; color: var(--red); cursor: pointer; font-size: 1.1rem; padding: 0 4px; opacity: 0.7; transition: opacity var(--transition); }
.btn-remove:hover { opacity: 1; }

/* ====== 天气 ====== */
.weather-badge { display: inline-flex; align-items: center; gap: 4px; padding: 2px 8px; background: rgba(232,184,75,0.1); border-radius: 20px; font-size: 0.75rem; color: var(--gold); }

/* ====== 列表 ====== */
.list-item { padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,0.05); cursor: pointer; }
.list-item:last-child { border-bottom: none; }
.list-item h3 { font-size: 0.95rem; font-weight: 600; color: var(--white); }
.list-item p { font-size: 0.82rem; color: var(--gray); margin-top: 2px; }

/* ====== 空状态 ====== */
.empty-state { text-align: center; padding: 60px 20px; color: var(--gray); }
.empty-state .icon { font-size: 2.6rem; margin-bottom: 12px; }

/* ====== 弹窗 ====== */
.modal-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.7); backdrop-filter: blur(4px); z-index: 200; justify-content: center; align-items: center; padding: 20px; }
.modal-overlay.active { display: flex; }
.modal-content { background: var(--card-bg); border-radius: var(--radius); padding: 24px; width: 100%; max-width: 400px; border: 1px solid rgba(232,184,75,0.1); }

/* ====== Animations ====== */
@keyframes slideDown { from { transform: translateY(-100%); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
@keyframes slideUp { from { transform: translateY(100%); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }

.card-enter { animation: fadeInUp 0.45s cubic-bezier(0.25, 0.1, 0.25, 1) both; }
.animate-hidden { opacity: 0; transform: translateY(20px); transition: opacity 0.5s ease, transform 0.5s ease; }
.animate-visible { opacity: 1; transform: translateY(0); }

/* ====== 响应式 ====== */
@media (min-width: 600px) { body { max-width: 480px; margin: 0 auto; } }
@media (max-width: 400px) { .header h1 { font-size: 0.95rem; } }