/* ============ 基础样式（浅色主题） ============ */
* { box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

/* ============ 卡片 ============ */
.card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 1rem;
  padding: 1.25rem;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06);
}

/* ============ 按钮 ============ */
.btn-primary {
  background: linear-gradient(135deg, #6366f1, #4f46e5);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 0.75rem;
  font-weight: 500;
  transition: transform 0.15s, box-shadow 0.15s;
  border: none;
  cursor: pointer;
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(99, 102, 241, 0.3);
}
.btn-secondary {
  background: #f1f5f9;
  color: #475569;
  padding: 0.5rem 1rem;
  border-radius: 0.75rem;
  transition: background 0.15s;
  border: none;
  cursor: pointer;
}
.btn-secondary:hover { background: #e2e8f0; }
.btn-success {
  background: linear-gradient(135deg, #10b981, #059669);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 0.75rem;
  font-weight: 500;
  transition: transform 0.15s;
  border: none;
  cursor: pointer;
}
.btn-success:hover { transform: translateY(-1px); }
.btn-check {
  background: #ecfdf5;
  color: #059669;
  padding: 0.4rem 0.8rem;
  border-radius: 0.5rem;
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid #a7f3d0;
  cursor: pointer;
  transition: all 0.15s;
}
.btn-check:hover {
  background: #d1fae5;
  transform: scale(1.05);
}
.btn-done {
  background: #f8fafc;
  color: #94a3b8;
  padding: 0.4rem 0.8rem;
  border-radius: 0.5rem;
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid #e2e8f0;
  cursor: pointer;
  transition: all 0.15s;
}
.btn-done:hover {
  background: #fef2f2;
  border-color: #fecaca;
  color: #dc2626;
}

/* ============ Tab ============ */
.tab-btn {
  white-space: nowrap;
  flex-shrink: 0;
  color: #64748b;
  border-bottom: 2px solid transparent;
  padding-bottom: 0.75rem;
  margin-bottom: -1px;
}
.tab-btn.active {
  color: #1e293b;
  border-bottom-color: #6366f1;
  background: linear-gradient(to top, rgba(99, 102, 241, 0.08), transparent);
}
.tab-btn:hover:not(.active) { color: #334155; }

/* ============ 输入框 ============ */
.input {
  background: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: 0.5rem;
  padding: 0.5rem 0.75rem;
  color: #0f172a;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.input:focus {
  border-color: #6366f1;
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
}

/* ============ 进度条 ============ */
.progress-bar {
  height: 8px;
  background: #e2e8f0;
  border-radius: 999px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #6366f1, #d97706);
  border-radius: 999px;
  transition: width 0.5s ease;
}

/* ============ 奖励卡片 ============ */
.reward-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 1rem;
  padding: 1.25rem;
  transition: transform 0.2s, box-shadow 0.2s;
  position: relative;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06);
}
.reward-card.unlocked {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.10), rgba(99, 102, 241, 0.08));
  border: 1px solid rgba(245, 158, 11, 0.4);
  box-shadow: 0 4px 20px rgba(245, 158, 11, 0.15);
}
.reward-card.locked {
  opacity: 0.8;
  filter: grayscale(0.35);
}

/* ============ 模态框 ============ */
.modal {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal.hidden { display: none; }
.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(4px);
}
.modal-content {
  position: relative;
  z-index: 1;
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 1rem;
  padding: 1.5rem;
  max-width: 90%;
  width: 480px;
  max-height: 85vh;
  overflow-y: auto;
  animation: modal-in 0.2s ease;
  box-shadow: 0 20px 60px rgba(15, 23, 42, 0.25);
}
.modal-close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  background: #f1f5f9;
  border: none;
  color: #64748b;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  cursor: pointer;
  font-size: 0.9rem;
}
.modal-close:hover { background: #e2e8f0; }
@keyframes modal-in {
  from { opacity: 0; transform: scale(0.95) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

/* ============ Toast ============ */
.toast {
  background: #ffffff;
  border: 1px solid rgba(99, 102, 241, 0.35);
  border-radius: 0.75rem;
  padding: 0.75rem 1.25rem;
  color: #0f172a;
  font-size: 0.9rem;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.15);
  animation: toast-in 0.3s ease;
}
.toast.success { border-color: rgba(16, 185, 129, 0.5); }
.toast.warning { border-color: rgba(217, 119, 6, 0.5); }
.toast.error { border-color: rgba(239, 68, 68, 0.5); }
@keyframes toast-in {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============ 目标卡片 ============ */
.goal-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 1rem;
  padding: 1.25rem;
  cursor: pointer;
  transition: transform 0.15s, border-color 0.15s, box-shadow 0.15s;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}
.goal-card:hover {
  transform: translateY(-2px);
  border-color: rgba(99, 102, 241, 0.5);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.10);
}
.goal-card.completed {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.08), #ffffff);
  border-color: rgba(16, 185, 129, 0.35);
}

/* ============ 滚动条 ============ */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #94a3b8; }

/* ============ AI 面板 ============ */
.chat-bubble {
  padding: 0.6rem 0.9rem;
  border-radius: 0.9rem;
  font-size: 0.85rem;
  line-height: 1.5;
  word-break: break-word;
}
.chat-bubble-user {
  background: linear-gradient(135deg, #6366f1, #4f46e5);
  color: #fff;
  border-bottom-right-radius: 0.25rem;
}
.chat-bubble-ai {
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  color: #1e293b;
  border-bottom-left-radius: 0.25rem;
}
.chat-bubble-error {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #dc2626;
  border-bottom-left-radius: 0.25rem;
}

.ai-pending-card {
  background: #ffffff;
  border: 1px solid #c7d2fe;
  border-radius: 0.5rem;
  padding: 0.4rem 0.75rem;
  font-size: 0.85rem;
}

/* 思考中三个点动画 */
.ai-typing {
  display: inline-flex;
  gap: 3px;
  align-items: center;
}
.ai-typing span {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #94a3b8;
  animation: ai-bounce 1.2s infinite;
}
.ai-typing span:nth-child(2) { animation-delay: 0.2s; }
.ai-typing span:nth-child(3) { animation-delay: 0.4s; }
@keyframes ai-bounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.5; }
  30% { transform: translateY(-4px); opacity: 1; }
}

/* 顶部维护入口：原生 details 支持键盘展开，工具保留文字名称。 */
.app-settings { position:relative; flex-shrink:0; }
.app-settings > summary { list-style:none; cursor:pointer; padding:6px 10px; border:1px solid #cbd5e1; border-radius:8px; background:white; color:#475569; font-size:12px; white-space:nowrap; }
.app-settings > summary::-webkit-details-marker { display:none; }
.settings-menu { position:absolute; right:0; top:calc(100% + 8px); width:180px; padding:6px; border:1px solid #e2e8f0; border-radius:12px; background:white; box-shadow:0 8px 24px #0f172a1a; }
.settings-menu button { display:block; width:100%; text-align:left; border:0; border-radius:6px; background:white; color:#475569; padding:10px; font-size:13px; cursor:pointer; }
.settings-menu button:hover { background:#f1f5f9; }
.settings-menu .settings-danger { color:#dc2626; }
.ai-setup-entry { display:flex; align-items:center; justify-content:space-between; gap:12px; padding-top:12px; padding-bottom:12px; }
.ai-setup-entry button { font-size:12px; color:#6366f1; }

/* 长期习惯：一层滚动、紧凑月历与窄屏操作布局。 */
.habit-total { font-size: 1.05rem; margin: .6rem 0 .25rem; }
.habit-total strong { font-size: 1.7rem; color: #334155; }
.goal-actions { display:flex; flex-wrap:wrap; align-items:center; gap:.5rem; }
.goal-actions button { font-size:.75rem; padding:.45rem .65rem; }
.habit-calendar { display:grid; grid-template-columns:repeat(7,minmax(0,1fr)); gap:4px; }
.habit-calendar-day { height:34px; border:1px solid #e2e8f0; border-radius:6px; font-size:11px; color:#475569; background:white; }
.habit-calendar-day.recorded { background:#d1fae5; color:#047857; border-color:#a7f3d0; }
.habit-calendar-day.before-record { background:#f1f5f9; color:#94a3b8; }
button:disabled { opacity:.45; cursor:default; }
.history-toolbar { display:flex; align-items:center; justify-content:space-between; gap:8px; font-size:.85rem; }
.history-row { display:flex; flex-wrap:wrap; justify-content:space-between; gap:4px; padding:6px; background:#f8fafc; font-size:11px; border-radius:6px; }
.history-row button { padding:3px 6px; margin-left:4px; }
.reward-condition { display:grid; gap:6px; padding:8px; border-bottom:1px solid #e2e8f0; }
@media (max-width:640px) { .modal-content { padding:1rem; max-width:96%; } .goal-card { padding:1rem; } .habit-calendar-day { height:30px; } }

/* 饮食单选月历：独立弹窗，不重建正在编辑的录入区。 */
.food-summary-heading { display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:.65rem; }
.food-date-switcher { display:flex; flex-wrap:wrap; align-items:center; gap:.35rem; }
.food-day-button { width:36px; height:36px; flex-shrink:0; border:1px solid #e2e8f0; border-radius:.65rem; background:white; color:#475569; font-size:1.3rem; }
.food-date-button { border:1px solid #c7d2fe; border-radius:.65rem; padding:.55rem .7rem; background:#eef2ff; color:#4338ca; font-size:.8rem; font-weight:500; }
.date-picker { width:370px; max-width:calc(100vw - 24px); max-height:calc(100dvh - 32px); padding:0; border:1px solid #e2e8f0; border-radius:1rem; color:#334155; background:white; box-shadow:0 24px 80px #0f172a33; }
.date-picker::backdrop { background:#0f172a55; }
.date-picker-panel { padding:1rem; }
.date-picker-heading, .date-picker-toolbar, .date-picker-footer { display:flex; align-items:center; justify-content:space-between; gap:.5rem; }
.date-picker-heading { margin-bottom:1rem; font-size:1rem; font-weight:600; }
.date-picker-heading button, .date-picker-toolbar > button { width:34px; height:34px; border:1px solid #e2e8f0; border-radius:.5rem; background:white; font-size:1rem; }
.date-picker-month-fields { display:flex; align-items:center; gap:.3rem; font-size:.85rem; }
.date-picker-month-fields input, .date-picker-month-fields select { padding:.4rem; border:1px solid #cbd5e1; border-radius:.5rem; background:white; color:#334155; }
.date-picker-month-fields input { width:75px; }
.date-picker-month-label { margin:.65rem 0 .25rem; text-align:center; font-size:.8rem; color:#64748b; }
.date-picker-grid { display:grid; grid-template-columns:repeat(7,minmax(0,1fr)); gap:4px; }
.date-picker-weekdays { margin-bottom:4px; text-align:center; font-size:.75rem; color:#94a3b8; line-height:28px; }
.date-picker-day { position:relative; min-width:0; height:44px; border:1px solid #e2e8f0; border-radius:.5rem; background:white; color:#475569; font-size:.85rem; }
.date-picker-day:hover:not(:disabled) { background:#eef2ff; border-color:#a5b4fc; }
.date-picker-day.today { border:2px solid #818cf8; }
.date-picker-day.selected, .date-picker-day.selected:hover { background:#4f46e5; border-color:#4f46e5; color:white; }
.date-picker button:focus-visible, .food-date-button:focus-visible, .food-day-button:focus-visible { outline:2px solid #818cf8; outline-offset:2px; }
.date-picker-dot { display:inline-block; width:4px; height:4px; border-radius:50%; background:currentColor; }
.date-picker-day .date-picker-dot { position:absolute; bottom:4px; left:calc(50% - 2px); }
.date-picker-footer { margin-top:1rem; font-size:.75rem; color:#64748b; }
.date-picker-footer span { display:flex; align-items:center; gap:5px; }
.date-picker-footer button { color:#4f46e5; background:#eef2ff; border-radius:.5rem; padding:.5rem .75rem; }

/* 登录与保存状态 */
body:not(.authenticated) > :not(#login-screen):not(script):not(.site-filing) { display: none !important; }
.site-filing { padding: 16px; text-align: center; font-size: 12px; color: #64748b; }
.site-filing a { display: inline-block; margin: 4px 8px; }
.site-filing img { display: inline-block; vertical-align: middle; margin-right: 4px; }
body.authenticated #login-screen { display: none; }
.login-screen { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login-card { width: 100%; max-width: 380px; }
#cloud-notice:not([hidden]) { padding: 10px 16px; background: #fff7ed; color: #9a3412; text-align: center; font-size: 13px; }

/* 手机浏览器共用适配：避开刘海与底部手势区，保留用户缩放。 */
body.min-h-screen, .login-screen { min-height: 100vh; min-height: 100dvh; }
body > header {
  padding-top: env(safe-area-inset-top, 0px);
  padding-left: env(safe-area-inset-left, 0px);
  padding-right: env(safe-area-inset-right, 0px);
}
body > main, body > main.app-main {
  padding-left: calc(1rem + env(safe-area-inset-left, 0px));
  padding-right: calc(1rem + env(safe-area-inset-right, 0px));
  padding-bottom: calc(6rem + env(safe-area-inset-bottom, 0px));
}
.login-screen {
  padding: calc(24px + env(safe-area-inset-top, 0px)) calc(24px + env(safe-area-inset-right, 0px)) calc(24px + env(safe-area-inset-bottom, 0px)) calc(24px + env(safe-area-inset-left, 0px));
}
body > #cloud-notice:not([hidden]) {
  padding-top: calc(10px + env(safe-area-inset-top, 0px));
  padding-left: calc(16px + env(safe-area-inset-left, 0px));
  padding-right: calc(16px + env(safe-area-inset-right, 0px));
}
body > .modal {
  padding: calc(12px + env(safe-area-inset-top, 0px)) calc(12px + env(safe-area-inset-right, 0px)) calc(12px + env(safe-area-inset-bottom, 0px)) calc(12px + env(safe-area-inset-left, 0px));
}
.modal .modal-content {
  max-height: calc(100vh - 24px - env(safe-area-inset-top, 0px) - env(safe-area-inset-bottom, 0px));
  max-height: min(85dvh, calc(100dvh - 24px - env(safe-area-inset-top, 0px) - env(safe-area-inset-bottom, 0px)));
  overscroll-behavior-y: contain;
}
.date-picker {
  inset: env(safe-area-inset-top, 0px) env(safe-area-inset-right, 0px) env(safe-area-inset-bottom, 0px) env(safe-area-inset-left, 0px);
  max-width: calc(100vw - 24px - env(safe-area-inset-left, 0px) - env(safe-area-inset-right, 0px));
  max-height: calc(100vh - 32px - env(safe-area-inset-top, 0px) - env(safe-area-inset-bottom, 0px));
  max-height: calc(100dvh - 32px - env(safe-area-inset-top, 0px) - env(safe-area-inset-bottom, 0px));
  overscroll-behavior-y: contain;
}
#toast-container {
  bottom: calc(1.5rem + env(safe-area-inset-bottom, 0px));
  width: max-content;
  max-width: calc(100% - 32px - env(safe-area-inset-left, 0px) - env(safe-area-inset-right, 0px));
  overflow-wrap: anywhere;
}
@media (max-width: 640px), (pointer: coarse) {
  /* 提高具体度，避免后加载的字号工具类把可编辑控件缩到 16px 以下。 */
  body :is(input:not([type="checkbox"]):not([type="radio"]):not([type="file"]):not([type="hidden"]), select, textarea) { font-size: max(1rem, 16px); min-width: 0; }
  body .btn-primary, body .btn-secondary, body .btn-success,
  body .btn-check, body .btn-done, body .tab-btn,
  .app-settings > summary, .settings-menu button, .food-date-button { min-height: 44px; }
  .app-settings > summary { display: flex; align-items: center; }
  .modal .modal-close, .food-day-button { width: 44px; height: 44px; }
  .modal .modal-content { padding-top: 3.5rem; }
  .date-picker-month-fields { flex-wrap: wrap; justify-content: center; }
}


/* 原型交互所需样式；视觉设计另行处理。 */
.app-tabs { overflow-y: hidden; }
.app-tabs .tab-btn { margin-bottom: 0; }
.skip-link { position: fixed; top: -100px; left: 16px; z-index: 100; padding: 10px 16px; background: white; }
.skip-link:focus { top: 10px; }
:where(button, a, summary, input, select, textarea, [tabindex]):focus-visible { outline: 2px solid #818cf8; outline-offset: 2px; }
.goal-detail-link { text-align: left; overflow-wrap: anywhere; }
body.modal-open { overflow: hidden; }
dialog.modal { width: 100%; max-width: none; height: 100%; max-height: none; margin: 0; border: 0; background: transparent; color: inherit; overflow: hidden; }
dialog.modal::backdrop { background: transparent; }
.modal-content > h3, #goal-detail > h2 { padding-right: 36px; }
.modal-content #cloud-notice:not([hidden]) { position: sticky; top: 0; z-index: 2; margin: 36px 0 16px; }
#cloud-retry[hidden], #cloud-logout[hidden] { display: none; }
#toast-container { pointer-events: none; }
#library-add-form { flex-wrap: wrap; }
#library-add-form input[name="name"] { min-width: 100px; }
.input { min-width: 0; }
@media (max-width: 640px), (pointer: coarse) {
  .modal-content #cloud-notice:not([hidden]) { margin-top: 0; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}