:root {
    --bg: #f7f8fa;
    --card: #ffffff;
    --primary: #5b8def;
    --primary-dark: #4a7dd8;
    --primary-soft: #eaf1ff;
    --accent: #10b981;
    --accent-soft: #e6f7f1;
    --festival: #f08a8a;
    --warn: #f5a623;
    --lunar: #9ca3af;
    --text: #1f2937;
    --text-light: #6b7280;
    --border: #e5e7eb;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,.05);
    --shadow-md: 0 2px 8px rgba(0,0,0,.08);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

.app-main {
    max-width: 520px; margin: 0 auto;
    padding: 16px; padding-top: calc(16px + env(safe-area-inset-top, 0px));
    padding-bottom: calc(72px + env(safe-area-inset-bottom, 0px));
}

.app-tabbar {
    position: fixed; bottom: 0; left: 0; right: 0; z-index: 100;
    max-width: 520px; margin: 0 auto;
    display: flex; background: var(--card); border-top: 1px solid var(--border);
    padding-bottom: env(safe-area-inset-bottom, 0px);
}
.tab-link {
    flex: 1; display: flex; flex-direction: column; align-items: center; gap: 2px;
    padding: 8px 0; text-decoration: none; color: var(--text-light);
    font-size: .68rem; -webkit-tap-highlight-color: transparent;
}
.tab-icon { font-size: 1.25rem; line-height: 1; }
.tab-link.active { color: var(--primary); font-weight: 700; }

.home-layout { display: flex; flex-direction: column; gap: 16px; }
.home-left, .home-right { flex: 1; min-width: 0; }

.month-header {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 12px;
}
.month-title { font-size: 1.2rem; font-weight: 700; }
.month-nav { display: flex; gap: 8px; }
.month-nav a {
    width: 32px; height: 32px; display: inline-flex; align-items: center; justify-content: center;
    border-radius: var(--radius-sm); background: var(--card); text-decoration: none;
    color: var(--text); border: 1px solid var(--border); font-size: 1rem;
}

.calendar-grid {
    display: grid; grid-template-columns: repeat(7, 1fr);
    background: var(--card); border-radius: var(--radius); overflow: hidden;
    box-shadow: var(--shadow); margin-bottom: 8px;
}
.cal-week {
    text-align: center; padding: 8px 0; font-size: .75rem; color: var(--text-light);
    background: var(--card); font-weight: 600;
}
.cal-week.weekend { color: var(--festival); }
.cal-cell {
    position: relative; text-align: center; padding: 6px 0 8px; cursor: pointer;
    border-top: 1px solid var(--border); min-height: 52px;
    -webkit-tap-highlight-color: transparent;
}
.cal-cell:nth-child(7n+1), .cal-cell:nth-child(7n) { color: var(--festival); }
.cal-day { font-size: .95rem; font-weight: 600; line-height: 1.4; }
.cal-lunar { font-size: .62rem; color: var(--lunar); line-height: 1.2; }
.cal-festival { color: var(--festival); font-weight: 600; }
.cal-term { color: var(--accent); }
.cal-today .cal-day {
    background: var(--primary); color: #fff; border-radius: 50%;
    width: 26px; height: 26px; line-height: 26px; margin: 0 auto; display: block;
}
.cal-today .cal-lunar { color: var(--primary); }
.cal-other { opacity: .35; }
.cal-selected { background: var(--primary-soft); }
.cal-dot {
    position: absolute; bottom: 4px; left: 50%; transform: translateX(-50%);
    width: 5px; height: 5px; border-radius: 50%; background: var(--accent);
}

.cal-bottom-bar { margin-bottom: 16px; }

.reminder-banner {
    background: var(--warn); color: #fff; border-radius: var(--radius);
    padding: 12px 14px; margin-bottom: 12px; box-shadow: var(--shadow-md);
}
.reminder-banner h3 { font-size: .9rem; margin-bottom: 6px; }
.reminder-item { font-size: .82rem; display: flex; justify-content: space-between; gap: 8px; }
.reminder-item .ri-age { opacity: .9; }

.day-section { margin-bottom: 16px; }
.section-title {
    font-size: .9rem; color: var(--text-light); font-weight: 700;
    margin: 16px 0 8px; padding-left: 2px; display: flex; align-items: center; gap: 6px; flex-wrap: wrap;
}
.section-title .count { color: var(--primary); }

.note-card {
    background: var(--card); border-radius: var(--radius); padding: 14px 16px;
    margin-bottom: 10px; box-shadow: var(--shadow); text-decoration: none; color: var(--text);
    display: block; -webkit-tap-highlight-color: transparent; transition: box-shadow .2s;
}
.note-card:active { box-shadow: var(--shadow-md); }
.note-card.pinned { border-left: 3px solid var(--primary); }
.note-card-title { font-size: 1rem; font-weight: 600; margin-bottom: 4px; }
.note-card-summary { font-size: .82rem; color: var(--text-light); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.note-card-meta { display: flex; gap: 8px; margin-top: 6px; font-size: .72rem; color: var(--text-light); align-items: center; flex-wrap: wrap; }
.cat-tag { display: inline-flex; align-items: center; gap: 4px; }
.cat-dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }

.todo-item {
    background: var(--card); border-radius: var(--radius); padding: 12px 14px;
    margin-bottom: 8px; box-shadow: var(--shadow); display: flex; align-items: flex-start; gap: 10px;
}
.todo-check {
    width: 22px; height: 22px; border: 2px solid var(--border); border-radius: 6px;
    flex-shrink: 0; cursor: pointer; display: inline-flex; align-items: center; justify-content: center;
    background: var(--card); -webkit-tap-highlight-color: transparent; font-size: .8rem;
}
.todo-check.done { background: var(--accent); border-color: var(--accent); color: #fff; }
.todo-body { flex: 1; min-width: 0; }
.todo-title { font-size: .95rem; font-weight: 500; }
.todo-item.done .todo-title { text-decoration: line-through; color: var(--text-light); }
.todo-meta { font-size: .72rem; color: var(--text-light); margin-top: 2px; }
.todo-overdue { color: var(--festival); }

.anni-item {
    background: var(--card); border-radius: var(--radius); padding: 14px 16px;
    margin-bottom: 10px; box-shadow: var(--shadow); display: flex; align-items: center; gap: 12px;
}
.anni-icon { font-size: 1.8rem; flex-shrink: 0; }
.anni-body { flex: 1; min-width: 0; }
.anni-title { font-size: 1rem; font-weight: 600; }
.anni-sub { font-size: .78rem; color: var(--text-light); margin-top: 2px; }
.anni-age { font-size: .8rem; font-weight: 700; color: var(--primary); background: var(--primary-soft); padding: 3px 10px; border-radius: 999px; }
.badge { font-size: .68rem; padding: 2px 8px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); }
.badge.lunar { background: #fdf2f8; color: #db2777; }

.cat-item {
    background: var(--card); border-radius: var(--radius); padding: 12px 14px;
    margin-bottom: 8px; box-shadow: var(--shadow); display: flex; align-items: center; gap: 8px;
}
.cat-color { width: 20px; height: 20px; border-radius: 50%; flex-shrink: 0; }
.cat-name { flex: 1; font-size: .95rem; font-weight: 500; }
.cat-count { font-size: .78rem; color: var(--text-light); white-space: nowrap; }

.page-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 16px; }
.page-header-row { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.page-header-row .page-title { margin-bottom: 0; }
.page-actions { display: flex; gap: 8px; margin-bottom: 16px; }

.search-bar { display: flex; gap: 8px; margin-bottom: 12px; }
.search-bar input { flex: 1; }

.cat-filter-bar { display: flex; gap: 8px; overflow-x: auto; margin-bottom: 16px; padding-bottom: 4px; -webkit-overflow-scrolling: touch; }
.cat-filter-bar a {
    display: inline-flex; align-items: center; gap: 4px; white-space: nowrap;
    padding: 6px 14px; border-radius: 999px; background: var(--card); color: var(--text-light);
    text-decoration: none; font-size: .82rem; border: 1px solid var(--border);
    -webkit-tap-highlight-color: transparent;
}
.cat-filter-bar a.active { background: var(--primary-soft); color: var(--primary); border-color: var(--primary); font-weight: 600; }

.manage-stats { display: flex; gap: 12px; margin-bottom: 16px; }
.stat-item { flex: 1; background: var(--card); border-radius: var(--radius); padding: 16px 12px; text-align: center; box-shadow: var(--shadow); }
.stat-num { font-size: 1.5rem; font-weight: 800; color: var(--primary); }
.stat-label { font-size: .78rem; color: var(--text-light); margin-top: 4px; }

.manage-user { display: flex; align-items: center; gap: 12px; background: var(--card); border-radius: var(--radius); padding: 12px 16px; margin-bottom: 20px; box-shadow: var(--shadow); }
.manage-user-label { font-size: .82rem; color: var(--text-light); }
.manage-user-name { flex: 1; font-size: 1rem; font-weight: 600; }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 6px; font-weight: 600; font-size: .85rem; color: var(--text-light); }
input[type="text"], input[type="number"], input[type="date"], input[type="time"], input[type="email"], input[type="password"], select, textarea {
    width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: var(--radius-sm);
    font-size: .95rem; background: var(--card); color: var(--text); font-family: inherit;
}
textarea { min-height: 120px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
.form-row { display: flex; gap: 12px; }
.form-row .form-group { flex: 1; }
.form-check { display: flex; align-items: center; gap: 8px; }
.form-check input { width: auto; }

.btn { border: none; border-radius: var(--radius-sm); padding: 10px 18px; font-size: .9rem; cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; justify-content: center; gap: 6px; -webkit-tap-highlight-color: transparent; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:active { background: var(--primary-dark); }
.btn-ghost { background: var(--card); color: var(--text); border: 1px solid var(--border); }
.btn-danger { background: var(--festival); color: #fff; }
.btn-block { width: 100%; }
.btn-sm { padding: 6px 12px; font-size: .82rem; }

.empty-state { text-align: center; padding: 40px 20px; color: var(--text-light); }
.empty-state .emoji { font-size: 2.5rem; margin-bottom: 8px; }
.empty-state p { font-size: .9rem; }

.detail-title { font-size: 1.3rem; font-weight: 700; margin-bottom: 8px; }
.detail-meta { font-size: .8rem; color: var(--text-light); margin-bottom: 16px; display: flex; gap: 12px; flex-wrap: wrap; }
.detail-content { white-space: pre-wrap; line-height: 1.8; font-size: .95rem; }
.detail-actions { display: flex; gap: 8px; margin-top: 24px; }

.alert { padding: 12px 14px; border-radius: var(--radius-sm); margin-bottom: 12px; font-size: .88rem; }
.alert-info { background: var(--primary-soft); color: var(--primary-dark); }

.color-picker { display: flex; gap: 8px; flex-wrap: wrap; }
.color-swatch { width: 28px; height: 28px; border-radius: 50%; cursor: pointer; border: 2px solid transparent; }
.color-swatch.selected { border-color: var(--text); }

.alert-success { background: var(--accent-soft); color: var(--accent); }
.alert-error { background: #fef2f2; color: #dc2626; }

.plan-status { background: var(--card); border-radius: var(--radius); padding: 20px; margin-bottom: 20px; box-shadow: var(--shadow); text-align: center; }
.plan-status-label { font-size: .82rem; color: var(--text-light); margin-bottom: 8px; }
.plan-status-name { font-size: 1.4rem; font-weight: 800; color: var(--primary); margin-bottom: 8px; }
.plan-status-badge { display: inline-block; padding: 4px 14px; border-radius: 999px; font-size: .82rem; font-weight: 600; }
.plan-status-badge.paid { background: var(--accent-soft); color: var(--accent); }
.plan-status-badge.free { background: var(--primary-soft); color: var(--primary); }

.quota-usage { background: var(--card); border-radius: var(--radius); padding: 16px; margin-bottom: 20px; box-shadow: var(--shadow); }
.quota-item { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; font-size: .85rem; }
.quota-item > span:first-child { width: 50px; flex-shrink: 0; }
.quota-bar { flex: 1; height: 8px; background: var(--border); border-radius: 4px; overflow: hidden; }
.quota-fill { height: 100%; background: var(--primary); border-radius: 4px; transition: width .3s; }
.quota-num { font-size: .78rem; color: var(--text-light); white-space: nowrap; }

.plan-compare { display: flex; gap: 12px; margin-bottom: 24px; }
.plan-card { flex: 1; background: var(--card); border-radius: var(--radius); padding: 20px 16px; box-shadow: var(--shadow); }
.plan-card-paid { border: 2px solid var(--primary); }
.plan-card-title { font-size: 1.1rem; font-weight: 700; text-align: center; margin-bottom: 12px; }
.plan-card-price { font-size: 1.3rem; font-weight: 800; color: var(--primary); }
.plan-card-price small { font-size: .75rem; font-weight: 400; color: var(--text-light); }
.plan-card-price-row { display: flex; justify-content: space-around; margin-bottom: 16px; gap: 4px; }
.plan-features { list-style: none; font-size: .82rem; line-height: 2; }
.plan-features li { color: var(--text); }

.activate-form { background: var(--card); border-radius: var(--radius); padding: 20px; margin-bottom: 16px; box-shadow: var(--shadow); }
.upgrade-note { text-align: center; color: var(--text-light); font-size: .82rem; margin-bottom: 16px; }
.upgrade-note p { margin-bottom: 4px; }

.paid-tag { font-size: .68rem; padding: 2px 6px; border-radius: 4px; background: var(--warn); color: #fff; margin-left: 4px; }

.plan-badge { font-size: .72rem; padding: 3px 10px; border-radius: 999px; font-weight: 600; white-space: nowrap; }
.plan-badge.paid { background: var(--accent-soft); color: var(--accent); }
.plan-badge.free { background: var(--primary-soft); color: var(--primary); }

.new-codes { margin-bottom: 20px; }
.code-item { display: flex; align-items: center; gap: 10px; background: var(--card); border-radius: var(--radius-sm); padding: 10px 14px; margin-bottom: 6px; box-shadow: var(--shadow); font-size: .85rem; }
.code-item.used { opacity: .55; }
.code-item.new { border: 2px solid var(--accent); }
.code-text { font-family: 'Courier New', monospace; font-weight: 700; flex: 1; }
.code-type { font-size: .75rem; color: var(--text-light); white-space: nowrap; }
.code-status { font-size: .75rem; padding: 2px 8px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); white-space: nowrap; }
.code-item.used .code-status { background: var(--border); color: var(--text-light); }

@media (min-width: 769px) {
    body { background: #eef1f5; }
    .app-main { max-width: 960px; padding: 20px; padding-bottom: calc(80px + env(safe-area-inset-bottom, 0px)); }
    .app-tabbar { max-width: 960px; box-shadow: var(--shadow); }
    .home-layout { flex-direction: row; align-items: flex-start; }
    .home-left { flex: 0 0 420px; }
    .home-right { flex: 1; min-width: 0; }
}

@media (min-width: 1025px) {
    .app-main { max-width: 1100px; }
    .app-tabbar { max-width: 1100px; }
    .home-left { flex: 0 0 480px; }
}