/* ============ 设计基调：温暖粉 + 奶白 ============ */
:root {
  --bg: #fdf8f6;
  --card: #ffffff;
  --text: #3a2e33;
  --text-2: #8a7a80;
  --accent: #ff7a9c;
  --accent-dark: #e85f82;
  --accent-soft: #ffeef2;
  --mine: #4f7cff;          /* 我的记录色 */
  --hers: #ff7a9c;          /* 她的记录色 */
  --border: #f0e2e6;
  --radius: 16px;
  --shadow: 0 4px 14px rgba(58, 46, 51, .08);
  --tab-h: 60px;
  --top-h: 54px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg); color: var(--text); line-height: 1.65;
  -webkit-tap-highlight-color: transparent;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
[hidden] { display: none !important; }

.view { min-height: 100dvh; }

/* ============ 登录 ============ */
#view-login {
  display: flex; align-items: center; justify-content: center; padding: 24px;
}
.login-card {
  width: 100%; max-width: 380px; background: var(--card);
  border-radius: 24px; padding: 40px 28px; text-align: center;
  box-shadow: var(--shadow); border: 1px solid var(--border);
}
.login-logo { font-size: 1.5rem; }
.login-sub { color: var(--text-2); font-size: .92rem; margin: 6px 0 24px; }
.who-picker { display: flex; gap: 10px; margin-bottom: 18px; }
.who-btn {
  flex: 1; padding: 12px 8px; border-radius: 12px;
  border: 1.5px solid var(--border); background: var(--bg);
  font-weight: 600; transition: all .2s;
}
.who-btn.active { border-color: var(--accent); background: var(--accent-soft); color: var(--accent-dark); }
#loginForm input {
  width: 100%; padding: 13px 16px; margin-bottom: 12px;
  border: 1.5px solid var(--border); border-radius: 12px;
  font: inherit; text-align: center; letter-spacing: 4px;
}
#loginForm input:focus { outline: none; border-color: var(--accent); }
.form-status { min-height: 1.4em; font-size: .88rem; margin-top: 8px; }
.form-status.ok { color: #2fa96e; }
.form-status.err { color: #e5484d; }

/* ============ 顶栏 ============ */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(253, 248, 246, .92); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  max-width: 720px; margin: 0 auto; height: var(--top-h);
  padding: 0 16px; display: flex; align-items: center; gap: 10px;
}
.brand { font-weight: 700; font-size: 1.05rem; }
.who-badge {
  font-size: .8rem; background: var(--accent-soft); color: var(--accent-dark);
  padding: 3px 10px; border-radius: 999px; font-weight: 600;
}
.topbar-actions { margin-left: auto; display: flex; gap: 6px; }
.icon-btn {
  border: none; background: none; font-size: 1.15rem; padding: 6px;
  border-radius: 8px; line-height: 1;
}
.icon-btn:hover { background: var(--accent-soft); }

/* ============ 主区 & 底部 Tab ============ */
main { max-width: 720px; margin: 0 auto; padding: 16px 16px calc(var(--tab-h) + 28px); }
.tabbar {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 50;
  display: flex; height: var(--tab-h);
  background: var(--card); border-top: 1px solid var(--border);
  padding-bottom: env(safe-area-inset-bottom);
}
.tabbar a {
  flex: 1; display: flex; flex-direction: column; align-items: center;
  justify-content: center; gap: 2px; font-size: .72rem; color: var(--text-2);
}
.tabbar .tab-icon { font-size: 1.3rem; filter: grayscale(1); opacity: .55; transition: all .2s; }
.tabbar a.active { color: var(--accent-dark); font-weight: 600; }
.tabbar a.active .tab-icon { filter: none; opacity: 1; transform: scale(1.12); }

/* ============ 通用组件 ============ */
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow);
}
.btn {
  display: inline-block; border: none; border-radius: 999px;
  padding: 10px 22px; font-weight: 600; transition: transform .15s, background .2s;
}
.btn:active { transform: scale(.97); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); }
.btn-primary:disabled { opacity: .55; cursor: not-allowed; }
.btn-ghost { background: var(--accent-soft); color: var(--accent-dark); }
.btn-block { display: block; width: 100%; }
.btn-sm { padding: 6px 14px; font-size: .85rem; }

.section-head {
  display: flex; align-items: center; justify-content: space-between;
  margin: 4px 0 14px;
}
.section-head h2 { font-size: 1.25rem; }
.month-nav { display: flex; align-items: center; gap: 8px; }
.month-nav button {
  border: 1px solid var(--border); background: var(--card);
  border-radius: 8px; padding: 4px 10px; font-size: .9rem;
}
.month-nav strong { font-size: .95rem; min-width: 88px; text-align: center; }

.empty {
  text-align: center; color: var(--text-2); padding: 48px 20px; font-size: .95rem;
}
.empty .empty-icon { font-size: 2.4rem; display: block; margin-bottom: 10px; }

/* ============ 心情 ============ */
.mood-composer { margin-bottom: 16px; }
.mood-scores { display: flex; justify-content: space-between; margin: 10px 0 14px; }
.score-btn {
  font-size: 1.7rem; background: none; border: none; border-radius: 12px;
  padding: 8px 10px; transition: transform .15s, background .15s;
}
.score-btn:hover { transform: scale(1.15); }
.score-btn.active { background: var(--accent-soft); transform: scale(1.18); }
.mood-composer textarea {
  width: 100%; border: 1.5px solid var(--border); border-radius: 12px;
  padding: 10px 14px; font: inherit; resize: vertical; min-height: 64px; background: var(--bg);
}
.mood-composer textarea:focus { outline: none; border-color: var(--accent); }
.composer-foot { display: flex; justify-content: space-between; align-items: center; margin-top: 10px; }
.composer-foot input[type="date"] {
  border: 1.5px solid var(--border); border-radius: 10px; padding: 7px 10px; font: inherit; background: var(--bg);
}

.mood-item { display: flex; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--border); }
.mood-item:last-child { border-bottom: none; }
.mood-emoji { font-size: 1.9rem; line-height: 1; }
.mood-body { flex: 1; min-width: 0; }
.mood-meta { font-size: .8rem; color: var(--text-2); display: flex; gap: 8px; align-items: center; }
.mood-meta .name {
  font-weight: 700; font-size: .78rem; padding: 1px 8px; border-radius: 999px; color: #fff;
}
.name.me { background: var(--mine); }
.name.her { background: var(--hers); }
.mood-note { font-size: .95rem; margin-top: 3px; word-break: break-word; }
.del-btn {
  border: none; background: none; color: var(--text-2); font-size: .95rem; align-self: flex-start; padding: 2px 6px;
}
.del-btn:hover { color: #e5484d; }

/* ============ 时光 ============ */
.photo-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }
.photo-cell {
  position: relative; aspect-ratio: 1; border-radius: 10px; overflow: hidden;
  background: var(--accent-soft); cursor: pointer;
}
.photo-cell img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .25s; }
.photo-cell:hover img { transform: scale(1.05); }
.photo-cell .cell-date {
  position: absolute; left: 6px; bottom: 4px; font-size: .68rem; color: #fff;
  text-shadow: 0 1px 3px rgba(0,0,0,.6);
}
.photo-cell .cell-del {
  position: absolute; right: 4px; top: 4px; width: 24px; height: 24px;
  border: none; border-radius: 50%; background: rgba(0,0,0,.45); color: #fff; font-size: .8rem;
  display: none;
}
.photo-cell:hover .cell-del { display: block; }
.photo-cell.own .cell-del { display: block; }
.load-more {
  display: block; margin: 16px auto 0; background: var(--card);
  border: 1px solid var(--border); border-radius: 999px; padding: 8px 24px; font-size: .9rem;
}

.upload-card { margin-bottom: 16px; }
.upload-card .field { margin-bottom: 12px; }
.upload-card label { display: block; font-size: .88rem; font-weight: 600; margin-bottom: 6px; }
.upload-card input[type="date"], .upload-card input[type="text"] {
  width: 100%; border: 1.5px solid var(--border); border-radius: 10px;
  padding: 10px 12px; font: inherit; background: var(--bg);
}
.upload-card input:focus { outline: none; border-color: var(--accent); }
.file-drop {
  border: 2px dashed var(--border); border-radius: 12px;
  padding: 22px; text-align: center; color: var(--text-2); cursor: pointer;
  transition: border-color .2s; margin-bottom: 12px;
}
.file-drop:hover, .file-drop.drag { border-color: var(--accent); color: var(--accent-dark); }
.file-drop input { display: none; }
.preview-strip { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.preview-strip img { width: 64px; height: 64px; object-fit: cover; border-radius: 8px; }
.upload-progress { font-size: .85rem; color: var(--text-2); min-height: 1.3em; }

/* 大图浏览 */
#viewer {
  position: fixed; inset: 0; z-index: 200; background: rgba(20, 12, 15, .94);
  display: flex; align-items: center; justify-content: center;
}
.viewer-body { max-width: 94vw; max-height: 88dvh; text-align: center; }
.viewer-body img {
  max-width: 94vw; max-height: 80dvh; border-radius: 8px; object-fit: contain;
}
.viewer-body figcaption { color: #eee; font-size: .9rem; margin-top: 10px; }
.viewer-close {
  position: absolute; top: 14px; right: 16px; font-size: 1.3rem;
  background: none; border: none; color: #fff; padding: 8px;
}
.viewer-nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  font-size: 2.4rem; color: #fff; background: rgba(255,255,255,.12);
  border: none; border-radius: 50%; width: 52px; height: 52px; line-height: 1;
}
.viewer-prev { left: 12px; }
.viewer-next { right: 12px; }
.viewer-nav:disabled { opacity: .3; }

/* ============ 账本 ============ */
.summary-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 12px; }
.stat-cell { text-align: center; padding: 14px 6px; }
.stat-cell .num { font-size: 1.15rem; font-weight: 700; }
.stat-cell .lbl { font-size: .75rem; color: var(--text-2); }

.settle-card { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.settle-text strong { color: var(--accent-dark); font-size: 1.05rem; }

.cat-bar-row { display: flex; align-items: center; gap: 10px; margin: 8px 0; font-size: .88rem; }
.cat-bar-row .cat-icon { width: 1.4em; text-align: center; }
.cat-bar { flex: 1; height: 10px; background: var(--accent-soft); border-radius: 999px; overflow: hidden; }
.cat-bar i { display: block; height: 100%; background: var(--accent); border-radius: 999px; }
.cat-bar-row .amt { min-width: 76px; text-align: right; color: var(--text-2); }

.exp-item {
  display: flex; align-items: center; gap: 12px; padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.exp-item:last-child { border-bottom: none; }
.exp-icon {
  width: 40px; height: 40px; border-radius: 12px; background: var(--accent-soft);
  display: flex; align-items: center; justify-content: center; font-size: 1.2rem; flex-shrink: 0;
}
.exp-body { flex: 1; min-width: 0; }
.exp-title { font-size: .95rem; font-weight: 600; }
.exp-sub { font-size: .78rem; color: var(--text-2); }
.exp-amt { text-align: right; flex-shrink: 0; }
.exp-amt .money { font-weight: 700; }
.exp-amt .settled-tag { font-size: .7rem; color: #2fa96e; }
.exp-amt .money.mine { color: var(--mine); }
.exp-amt .money.her { color: var(--hers); }

/* 记账浮层 */
.sheet-mask {
  position: fixed; inset: 0; z-index: 100; background: rgba(20,12,15,.4);
  display: flex; align-items: flex-end; justify-content: center;
  animation: fadeIn .18s;
}
.sheet {
  width: 100%; max-width: 720px; background: var(--card);
  border-radius: 20px 20px 0 0; padding: 22px 20px calc(22px + env(safe-area-inset-bottom));
  animation: slideUp .22s;
}
@keyframes fadeIn { from { opacity: 0; } }
@keyframes slideUp { from { transform: translateY(40px); opacity: .5; } }
.sheet h3 { margin-bottom: 16px; }
.sheet .field { margin-bottom: 14px; }
.sheet label { display: block; font-size: .85rem; font-weight: 600; margin-bottom: 6px; }
.sheet input[type="number"], .sheet input[type="text"], .sheet input[type="date"] {
  width: 100%; border: 1.5px solid var(--border); border-radius: 10px;
  padding: 11px 14px; font: inherit; background: var(--bg);
}
.sheet input:focus { outline: none; border-color: var(--accent); }
.amount-input { display: flex; align-items: center; gap: 8px; }
.amount-input span { font-size: 1.2rem; font-weight: 700; color: var(--text-2); }
.amount-input input { font-size: 1.25rem; font-weight: 700; }
.cat-picker { display: grid; grid-template-columns: repeat(6, 1fr); gap: 6px; }
.cat-opt {
  border: 1.5px solid var(--border); background: var(--bg); border-radius: 10px;
  padding: 8px 2px; font-size: .72rem; text-align: center;
}
.cat-opt .ci { font-size: 1.2rem; display: block; }
.cat-opt.active { border-color: var(--accent); background: var(--accent-soft); }
.payer-picker, .split-picker { display: flex; gap: 8px; }
.payer-picker button, .split-picker button {
  flex: 1; padding: 9px; border-radius: 10px; border: 1.5px solid var(--border);
  background: var(--bg); font-size: .88rem; font-weight: 600;
}
.payer-picker button.active[data-payer="me"] { border-color: var(--mine); background: #eef3ff; color: var(--mine); }
.payer-picker button.active[data-payer="her"] { border-color: var(--hers); background: var(--accent-soft); color: var(--accent-dark); }
.split-picker button.active { border-color: var(--accent); background: var(--accent-soft); color: var(--accent-dark); }
.split-ratio-row { display: flex; align-items: center; gap: 10px; font-size: .88rem; margin-top: 8px; }
.split-ratio-row input[type="range"] { flex: 1; accent-color: var(--accent); }
.sheet-actions { display: flex; gap: 10px; margin-top: 18px; }
.sheet-actions .btn { flex: 1; }

/* ============ 设置/工具行 ============ */
.tool-row { display: flex; gap: 10px; margin-top: 16px; flex-wrap: wrap; }

/* ============ Toast ============ */
#toast {
  position: fixed; left: 50%; bottom: calc(var(--tab-h) + 20px); transform: translateX(-50%);
  background: var(--text); color: #fff; padding: 10px 20px; border-radius: 999px;
  font-size: .88rem; z-index: 300; opacity: 0; pointer-events: none;
  transition: opacity .25s;
}
#toast.show { opacity: .95; }

/* ============ 响应式 ============ */
@media (max-width: 480px) {
  .summary-grid { grid-template-columns: repeat(3, 1fr); gap: 6px; }
  .cat-picker { grid-template-columns: repeat(3, 1fr); }
  .photo-grid { gap: 4px; }
}
@media (min-width: 720px) {
  .viewer-nav { width: 60px; height: 60px; font-size: 2.8rem; }
}