:root {
  --accent: #ff5a3c;
  --accent-dark: #e8431f;
  --accent-soft: #ffe8e0;
  --ink: #2b2420;
  --ink-2: #6b5f57;
  --ink-3: #a89b92;
  --paper: #faf7f2;
  --card: #ffffff;
  --line: #eee6dd;
  --green: #2ea44f;
  --green-soft: #e5f5ea;
  --lock: #e9e2d9;
  --shadow: 0 6px 24px rgba(120, 80, 50, 0.08);
  --radius: 16px;
  --tabbar-h: 60px;
  --topbar-h: 54px;
  font-size: 16px;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--paper);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}

#app {
  max-width: 480px;
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--paper);
  position: relative;
}

/* ---------- Top bar ---------- */
#topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(250, 247, 242, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  height: var(--topbar-h);
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
#brand { display: flex; align-items: center; gap: 8px; }
.brand-mark {
  width: 26px; height: 26px;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  box-shadow: 0 2px 6px rgba(255, 90, 60, 0.4);
}
.brand-name { font-weight: 800; letter-spacing: 0.5px; }
.sync-indicator { display:flex; align-items:center; gap:5px; margin-left:8px; padding:3px 8px; border:1px solid var(--line); border-radius:20px; cursor:pointer; background:rgba(255,255,255,.6); user-select:none }
.sync-ind-dot { width:8px; height:8px; border-radius:50%; display:inline-block; transition:background .3s }
.sync-ind-time { font-size:10px; color:var(--muted); font-variant-numeric:tabular-nums }
.top-date { color: var(--ink-3); font-size: 13px; }

/* ---------- Main ---------- */
#screen {
  flex: 1;
  padding: 16px 16px calc(var(--tabbar-h) + 24px);
  overflow-y: auto;
}

/* ---------- Bottom tabs ---------- */
#tabbar {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 480px;
  height: var(--tabbar-h);
  background: var(--card);
  border-top: 1px solid var(--line);
  display: flex;
  padding-bottom: env(safe-area-inset-bottom);
  z-index: 20;
}
.tab {
  flex: 1;
  border: 0;
  background: transparent;
  color: var(--ink-3);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  transition: color 0.15s;
}
.tab .tab-icon { font-size: 18px; line-height: 1; }
.tab.active { color: var(--accent); }
.tab.active .tab-icon { transform: scale(1.08); }

/* ---------- Generic ---------- */
h2.sec-title { font-size: 20px; margin: 4px 0 4px; }
.sub { color: var(--ink-2); font-size: 14px; line-height: 1.6; }
.muted { color: var(--ink-3); font-size: 13px; }
.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  margin-top: 12px;
}
.btn {
  border: 0;
  border-radius: 14px;
  font-size: 16px;
  font-weight: 700;
  padding: 14px 18px;
  cursor: pointer;
  transition: transform 0.06s, opacity 0.15s;
}
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 4px 14px rgba(255, 90, 60, 0.35); }
.btn-ghost { background: transparent; color: var(--ink-2); border: 1.5px solid var(--line); }
.btn-block { width: 100%; }
.btn[disabled] { opacity: 0.45; cursor: not-allowed; }

/* ---------- Today view ---------- */
.banner {
  background: var(--accent-soft);
  border: 1px solid #ffd2c3;
  color: var(--accent-dark);
  border-radius: var(--radius);
  padding: 12px 14px;
  font-size: 14px;
  line-height: 1.55;
  margin-bottom: 12px;
}
.banner .banner-actions { margin-top: 8px; display: flex; gap: 8px; flex-wrap: wrap; }
.banner .btn { font-size: 14px; padding: 9px 14px; }

.progress-wrap { margin-top: 12px; }
.progress-meta { display: flex; justify-content: space-between; font-size: 13px; color: var(--ink-2); margin-bottom: 6px; }
.progress-bar { height: 10px; border-radius: 99px; background: var(--line); overflow: hidden; }
.progress-fill { height: 100%; width: 0; background: linear-gradient(90deg, var(--accent), #ff8a5c); border-radius: 99px; transition: width 0.4s; }

.now-card {
  margin-top: 14px;
  background: var(--ink);
  color: #fff;
  border-radius: 20px;
  padding: 20px 18px;
  box-shadow: 0 10px 30px rgba(43, 36, 32, 0.25);
  position: relative;
  overflow: hidden;
}
.now-card::after {
  content: "";
  position: absolute;
  right: -30px; top: -30px;
  width: 110px; height: 110px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
}
.now-label {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 1px;
  color: #ffb59e;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.now-text { font-size: 20px; font-weight: 700; line-height: 1.45; margin: 0 0 18px; }
.now-actions { display: flex; gap: 10px; }
.now-actions .btn { flex: 1; }
.now-actions .btn-done { background: #fff; color: var(--ink); }
.now-actions .btn-skip { background: rgba(255,255,255,0.14); color: #fff; }

.todo-list { list-style: none; padding: 0; margin: 14px 0 0; }
.todo-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 14px;
  border-radius: 14px;
  background: var(--card);
  box-shadow: var(--shadow);
  margin-bottom: 10px;
}
.todo-list li.locked { background: var(--lock); box-shadow: none; }
.todo-list li.done { opacity: 0.85; }
.todo-num {
  width: 26px; height: 26px;
  flex-shrink: 0;
  border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 800;
  background: var(--accent-soft); color: var(--accent-dark);
}
li.locked .todo-num { background: #d9d1c7; color: var(--ink-3); }
li.done .todo-num { background: var(--green-soft); color: var(--green); }
.todo-text { flex: 1; font-size: 15px; line-height: 1.4; }
li.done .todo-text { text-decoration: line-through; color: var(--ink-3); }
li.locked .todo-text { color: var(--ink-3); }
.todo-state { font-size: 12px; color: var(--ink-3); flex-shrink: 0; }
li.done .todo-state { color: var(--green); font-weight: 700; }

/* done animation */
@keyframes pop { 0% { transform: scale(1); } 40% { transform: scale(1.06); } 100% { transform: scale(1); } }
.pop { animation: pop 0.3s ease; }

/* ---------- Plan view ---------- */
.plan-header { text-align: center; margin: 6px 0 2px; }
.plan-title { font-size: 22px; font-weight: 800; margin: 0 0 6px; }
.plan-cap { color: var(--ink-3); font-size: 13px; }

.add-row {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}
.add-row input {
  flex: 1;
  border: 2px solid var(--line);
  border-radius: 14px;
  padding: 13px 14px;
  font-size: 15px;
  background: var(--card);
  color: var(--ink);
  outline: none;
}
.add-row input:focus { border-color: var(--accent); }
.add-row button {
  border: 0;
  border-radius: 14px;
  background: var(--accent);
  color: #fff;
  font-size: 22px;
  font-weight: 800;
  width: 50px;
  cursor: pointer;
}
.add-row button:disabled { background: var(--line); color: var(--ink-3); }

.plan-list { list-style: none; padding: 0; margin: 12px 0 0; }
.plan-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 10px 12px 14px;
  background: var(--card);
  border-radius: 14px;
  box-shadow: var(--shadow);
  margin-bottom: 10px;
  touch-action: none;
}
.plan-list li.dragging { opacity: 0.6; transform: scale(0.99); }
.plan-rank {
  width: 26px; height: 26px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent-dark);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 800;
  flex-shrink: 0;
}
.plan-list li:first-child .plan-rank { background: var(--accent); color: #fff; }
.plan-text { flex: 1; font-size: 15px; line-height: 1.4; }
.plan-drag {
  flex-shrink: 0;
  width: 30px; height: 30px;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--ink-3);
  font-size: 16px;
  cursor: grab;
  touch-action: none;
  user-select: none;
}
.plan-del {
  flex-shrink: 0;
  border: 0;
  background: transparent;
  color: var(--ink-3);
  font-size: 17px;
  width: 30px; height: 30px;
  border-radius: 8px;
  cursor: pointer;
}
.plan-del:hover { background: var(--accent-soft); color: var(--accent-dark); }

.hint-note {
  margin-top: 14px;
  font-size: 13px;
  color: var(--ink-3);
  background: var(--card);
  border-radius: 14px;
  padding: 12px 14px;
  line-height: 1.6;
}

/* ---------- History ---------- */
.streak-hero {
  text-align: center;
  padding: 22px 16px;
}
.streak-num { font-size: 52px; font-weight: 900; color: var(--accent); line-height: 1; }
.streak-label { color: var(--ink-2); font-size: 15px; margin-top: 6px; }
.streak-tip { color: var(--ink-3); font-size: 13px; margin-top: 4px; }

.hist-day { display: flex; align-items: center; gap: 12px; padding: 12px 4px; border-bottom: 1px solid var(--line); }
.hist-day:last-child { border-bottom: 0; }
.hist-date { flex-shrink: 0; width: 74px; font-size: 13px; color: var(--ink-2); }
.hist-bars { flex: 1; display: flex; gap: 3px; align-items: flex-end; height: 26px; }
.hist-bar { flex: 1; max-width: 18px; border-radius: 4px 4px 0 0; background: var(--line); }
.hist-bar.filled { background: var(--accent); }
.hist-sum { flex-shrink: 0; font-size: 12px; color: var(--ink-3); width: 46px; text-align: right; }

/* ---------- Settings ---------- */
.set-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 4px;
  border-bottom: 1px solid var(--line);
}
.set-row:last-child { border-bottom: 0; }
.set-label { font-size: 15px; font-weight: 600; }
.set-desc { font-size: 12.5px; color: var(--ink-3); margin-top: 2px; line-height: 1.5; }
.set-value { font-size: 15px; color: var(--accent-dark); font-weight: 700; white-space: nowrap; }

.limit-stepper { display: flex; align-items: center; gap: 12px; }
.limit-stepper button {
  width: 32px; height: 32px;
  border-radius: 10px;
  border: 1.5px solid var(--line);
  background: var(--card);
  font-size: 18px; font-weight: 800;
  color: var(--ink);
  cursor: pointer;
}
.limit-stepper button:disabled { opacity: 0.35; }

/* switch */
.switch { position: relative; width: 48px; height: 28px; flex-shrink: 0; }
.switch input { opacity: 0; width: 0; height: 0; }
.switch .track {
  position: absolute; inset: 0;
  background: var(--line);
  border-radius: 99px;
  transition: background 0.2s;
  cursor: pointer;
}
.switch .track::after {
  content: "";
  position: absolute;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: #fff;
  top: 3px; left: 3px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.25);
  transition: transform 0.2s;
}
.switch input:checked + .track { background: var(--accent); }
.switch input:checked + .track::after { transform: translateX(20px); }

.ghost-btn { border: 1.5px solid var(--line); background: var(--card); color: var(--ink-2); }
.danger-btn { background: #fff; color: #c62828; border: 1.5px solid #ffd6d6; }

/* method card */
.method-step { display: flex; gap: 12px; padding: 10px 0; border-bottom: 1px dashed var(--line); }
.method-step:last-child { border-bottom: 0; }
.method-step .n {
  flex-shrink: 0;
  width: 24px; height: 24px;
  border-radius: 50%;
  background: var(--accent); color: #fff;
  font-size: 13px; font-weight: 800;
  display: inline-flex; align-items: center; justify-content: center;
}
.method-step p { margin: 0; font-size: 14px; line-height: 1.55; color: var(--ink-2); }

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  bottom: calc(var(--tabbar-h) + 18px);
  background: rgba(43, 36, 32, 0.92);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 12px 18px;
  border-radius: 99px;
  box-shadow: var(--shadow);
  z-index: 50;
  max-width: 86vw;
  text-align: center;
  animation: toast-in 0.25s ease;
}
@keyframes toast-in { from { opacity: 0; transform: translate(-50%, 10px); } to { opacity: 1; transform: translate(-50%, 0); } }

/* ---------- Empty states ---------- */
.empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--ink-3);
}
.empty .big { font-size: 44px; margin-bottom: 10px; }
.empty p { font-size: 14px; line-height: 1.7; margin: 0 0 16px; }

/* confetti burst */
.burst {
  position: fixed;
  left: 50%; top: 42%;
  z-index: 60;
  pointer-events: none;
  font-size: 46px;
  transform: translate(-50%, -50%);
  animation: burst 0.9s ease forwards;
}
@keyframes burst { 0% { opacity: 0; transform: translate(-50%, -50%) scale(0.4); } 25% { opacity: 1; transform: translate(-50%, -60%) scale(1.15); } 100% { opacity: 0; transform: translate(-50%, -130%) scale(0.8); } }

/* small responsive touches */
@media (min-width: 520px) {
  body { background: #efe9e0; }
  #app { box-shadow: 0 0 40px rgba(0,0,0,0.06); }
}

/* 执行日切换 */
.plan-day-switch {
  display: flex;
  gap: 8px;
  margin: 2px 0 14px;
  background: var(--line);
  border-radius: 12px;
  padding: 4px;
}
.pd-btn {
  flex: 1;
  border: 0;
  border-radius: 9px;
  background: transparent;
  color: var(--ink-2);
  font-size: 14px;
  font-weight: 700;
  padding: 9px 0;
  cursor: pointer;
  transition: all 0.15s;
}
.pd-btn.active {
  background: var(--card);
  color: var(--accent);
  box-shadow: 0 2px 8px rgba(120, 80, 50, 0.12);
}

/* 一次机会横幅 */
.chance-banner {
  background: #eef6ff;
  border-color: #c5e0ff;
  color: #1a4f8b;
}
.chance-banner .btn {
  background: #1a73e8;
  color: #fff;
}

/* 规划条目编辑 */
.plan-list li.editing {
  background: #fffdf5;
  border: 1.5px solid var(--accent-soft);
}
.plan-edit-input {
  flex: 1;
  border: 1.5px solid var(--accent);
  border-radius: 10px;
  padding: 8px 10px;
  font-size: 15px;
  background: #fff;
  color: var(--ink);
  outline: none;
  min-width: 0;
}
.plan-list li.editing .plan-del { color: var(--green); }
.plan-list li.editing .plan-del:last-child { color: var(--ink-3); }

/* ============ 坚持页 · 日历 ============ */
.cal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}
.cal-title { font-size: 16px; font-weight: 800; color: var(--ink-2); }
.cal-nav {
  border: 1.5px solid var(--line);
  background: var(--card);
  color: var(--ink-2);
  width: 34px; height: 34px;
  border-radius: 10px;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  transition: all 0.15s;
}
.cal-nav:active { transform: scale(0.92); }
.cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 5px;
}
.cal-wd {
  text-align: center;
  font-size: 11px;
  color: var(--ink-3);
  font-weight: 700;
  padding: 2px 0;
}
.cal-cell {
  aspect-ratio: 1;
  border: 0;
  border-radius: 9px;
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-2);
  background: transparent;
  cursor: pointer;
  transition: all 0.12s;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}
.cal-cell.empty { background: transparent; cursor: default; }
.cal-cell.blank { background: var(--bg-soft, #f2efe9); color: var(--ink-3); }
.cal-cell.some { background: #fde8d9; color: #b0562a; }
.cal-cell.partial { background: #ffe0b8; color: #a85b12; }
.cal-cell.full { background: var(--accent); color: #fff; }
.cal-cell.today { box-shadow: 0 0 0 2px var(--card), 0 0 0 3.5px var(--accent); }
.cal-cell.sel { outline: 2.5px solid var(--accent); outline-offset: 1px; }
.cal-cell:active { transform: scale(0.9); }
.cal-legend {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  font-size: 11px;
  color: var(--ink-3);
  flex-wrap: wrap;
}
.cal-legend .lg { width: 12px; height: 12px; border-radius: 3px; display: inline-block; }
.lg-full { background: var(--accent); }
.lg-partial { background: #ffe0b8; }
.lg-some { background: #fde8d9; }
.lg-blank { background: #f2efe9; }

/* 选中日明细 */
.day-detail-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}
.day-detail-sum { font-size: 13px; color: var(--ink-3); font-weight: 700; }
.day-detail-list { list-style: none; padding: 0; margin: 0; }
.day-detail-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 4px;
  border-bottom: 1px solid var(--line);
}
.day-detail-list li:last-child { border-bottom: 0; }
.dd-rank {
  width: 22px; height: 22px;
  border-radius: 7px;
  background: var(--line);
  color: var(--ink-2);
  font-size: 12px;
  font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.dd-text { flex: 1; font-size: 15px; color: var(--ink); }
.dd-state { font-size: 12px; font-weight: 700; flex-shrink: 0; }
li.dd-done .dd-state { color: var(--accent); }
li.dd-done .dd-text { color: var(--ink-3); text-decoration: line-through; }
li.dd-skipped .dd-state { color: var(--ink-3); }
li.dd-todo .dd-state { color: #b0562a; }


/* ============ 手机响应式增强 ============ */
/* 窄屏手机：字号/间距/防溢出微调，提升触控与阅读体验 */

/* 小屏手机（≤400px） */
@media (max-width: 400px) {
  :root { font-size: 15px; }

  /* 卡片内边距略收 */
  .card { padding: 13px; }

  /* 添加行：输入框可伸缩，按钮不换行 */
  .add-row { gap: 6px; }
  .add-row input { min-width: 0; flex: 1; }
  .add-row button { padding: 14px 14px; }

  /* 设置行：长文字换行，按钮不被挤压 */
  .set-row { flex-wrap: wrap; gap: 8px; }
  .set-row > div:first-child { flex: 1; min-width: 0; }

  /* 按钮略紧凑 */
  .btn { font-size: 15px; padding: 13px 14px; }

  /* 坚持页大数字 */
  .streak-num { font-size: 40px; }

  /* 配对二维码（app.js 内联 160px）：窄屏缩小防溢出 */
  #sync-qr { max-width: 140px; height: auto; }
  #sync-qr canvas { max-width: 100%; height: auto; }

  /* 日历格子更紧凑 */
  .cal-grid { gap: 3px; }
  .cal-cell { min-height: 32px; }

  /* 输入框内边距 */
  input:not([type]), input[type="text"] { padding: 12px 10px; }

  /* 今日页/规划页列表项：防止超长文字挤压操作按钮 */
  .plan-text, .dd-text, .now-text { min-width: 0; word-break: break-word; }
  .plan-list li, .dd-row { flex-wrap: nowrap; }
  .plan-list li > span:first-of-type { flex-shrink: 0; }
}

/* 超窄屏（≤340px，老安卓） */
@media (max-width: 340px) {
  :root { font-size: 14px; }
  .topbar-inner { padding: 0 10px; }
  .card { padding: 10px; }
  .plan-cap { font-size: 12px; }
  .banner { padding: 10px; }
}