:root {
  --bg-page: #fff7ef;
  --bg-surface: #fffdfc;
  --bg-soft: #fff1e5;
  --text-primary: #2f2721;
  --text-secondary: #826f63;
  --text-tertiary: #bcaea5;
  --border-soft: #f3ddd1;
  --divider: rgba(77, 60, 47, 0.08);
  --accent-yellow: #ffca45;
  --accent-yellow-soft: #fff1bf;
  --accent-blue-soft: #dff0ff;
  --accent-purple-soft: #efe2ff;
  --accent-green-soft: #ddf2d7;
  --accent-pink-soft: #ffe0e3;
  --accent-warm: #ffd778;
  --shadow-card: 0 12px 28px rgba(126, 86, 55, 0.09);
  --shadow-floating: 0 16px 36px rgba(90, 59, 39, 0.18);
  --shadow-light: 0 5px 16px rgba(126, 86, 55, 0.07);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 14px;
  --radius-pill: 999px;
  --font-ui: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", "Microsoft YaHei UI", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  background: #f6eee8;
  width: 100%;
  overflow-x: hidden;
}

body {
  margin: 0;
  width: 100%;
  min-height: 100dvh;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 14% 6%, rgba(255, 224, 227, 0.9), transparent 28%),
    radial-gradient(circle at 86% 12%, rgba(221, 242, 215, 0.82), transparent 24%),
    linear-gradient(180deg, #fff8f0 0%, #fff3e8 48%, #f7f1ff 100%);
  color: var(--text-primary);
  font-family: var(--font-ui);
  font-size: 15px;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

button,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

button,
textarea {
  border: 0;
}

button:active {
  transform: scale(0.98);
}

button:focus-visible,
textarea:focus-visible {
  outline: 3px solid rgba(255, 201, 52, 0.38);
  outline-offset: 2px;
}

svg {
  display: block;
}

.phone-app {
  width: min(100%, 460px);
  min-height: 100dvh;
  margin: 0 auto;
  padding: 18px 20px calc(108px + env(safe-area-inset-bottom));
  overflow: hidden;
}

.screen {
  display: none;
}

.screen.active {
  display: block;
}

.simple-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 6px 18px;
}

.simple-header p,
.sheet-title p {
  margin: 0 0 4px;
  color: #7e9b6b;
  font-size: 12px;
  font-weight: 800;
}

.simple-header h1 {
  margin: 0;
  max-width: 250px;
  font-size: 28px;
  font-weight: 800;
  line-height: 1.2;
}

.simple-header button,
.section-head button {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  background: transparent;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 600;
}

.simple-header button svg,
.section-head button svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.bottom-tabs {
  position: fixed;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  align-items: end;
  width: min(calc(100% - 32px), 428px);
  min-height: 72px;
  margin: 0 auto calc(10px + env(safe-area-inset-bottom));
  padding: 9px 12px;
  border-radius: 34px;
  border: 1px solid rgba(255, 255, 255, 0.86);
  background: rgba(255, 252, 247, 0.96);
  box-shadow: 0 14px 38px rgba(126, 86, 55, 0.16);
  backdrop-filter: blur(18px);
}

.bottom-tabs button {
  position: relative;
  display: grid;
  place-items: center;
  gap: 4px;
  min-width: 0;
  min-height: 52px;
  background: transparent;
  color: var(--text-tertiary);
  font-size: 11px;
  font-weight: 600;
  transition: color 180ms ease, transform 150ms ease;
}

.bottom-tabs button.active {
  color: var(--text-primary);
}

.bottom-tabs button.active::after {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(135deg, #ffca45, #ff9f87);
  content: "";
}

.bottom-tabs svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.9;
}

.ai-tab-icon {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border: 1px solid rgba(98, 78, 57, 0.22);
  border-radius: 8px;
  background: #fff6e5;
  color: var(--text-secondary);
  font-size: 11px;
  font-weight: 900;
}

.bottom-tabs button.active .ai-tab-icon {
  border-color: #f7aa73;
  background: linear-gradient(145deg, #ffca45, #ff9f87);
  color: #fffdfc;
}

.bottom-tabs strong {
  font-weight: 700;
}

.publish-tab {
  transform: translateY(-18px);
}

.publish-label {
  position: absolute;
  top: -16px;
  padding: 5px 10px;
  border-radius: 999px;
  background: #fff8ea;
  color: var(--text-primary);
  font-size: 12px;
  font-weight: 700;
  box-shadow: var(--shadow-card);
}

.publish-orb {
  display: grid;
  place-items: center;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--text-primary);
  color: #fffdfc;
  box-shadow: var(--shadow-floating);
}

.publish-orb svg {
  width: 28px;
  height: 28px;
  stroke-width: 2.4;
}

.compose-sheet,
.profile-sheet,
.credit-rule-sheet,
.errand-rule-sheet {
  position: fixed;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 40;
  display: grid;
  gap: 14px;
  width: min(100%, 460px);
  max-height: 78dvh;
  margin: 0 auto;
  padding: 10px 18px calc(18px + env(safe-area-inset-bottom));
  border-radius: 30px 30px 0 0;
  background: rgba(255, 253, 252, 0.98);
  box-shadow: 0 -18px 50px rgba(50, 43, 36, 0.16);
  transform: translateY(110%);
  transition: transform 260ms cubic-bezier(0.16, 1, 0.3, 1);
}

.compose-sheet.open,
.profile-sheet.open,
.credit-rule-sheet.open,
.errand-rule-sheet.open {
  transform: translateY(0);
}

.sheet-backdrop {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: none;
  background: rgba(34, 28, 22, 0.18);
  backdrop-filter: blur(4px);
}

.sheet-backdrop.open {
  display: block;
}

.sheet-handle {
  justify-self: center;
  width: 48px;
  height: 5px;
  border-radius: 999px;
  background: #ded8ce;
}

.sheet-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.sheet-title h2 {
  margin: 0;
  font-size: 22px;
  font-weight: 800;
  line-height: 1.2;
}

.round-close {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-soft);
  color: var(--text-primary);
  font-size: 28px;
  line-height: 1;
}

textarea {
  width: 100%;
  min-height: 112px;
  padding: 14px;
  border: 1px solid var(--border-soft);
  border-radius: 18px;
  outline: none;
  resize: vertical;
  background: #fff9f1;
  color: var(--text-primary);
  font-size: 15px;
  line-height: 1.62;
}

.profile-sheet {
  gap: 16px;
}

.profile-editor-preview {
  display: grid;
  grid-template-columns: 74px 1fr;
  gap: 14px;
  align-items: center;
  padding: 14px;
  border-radius: var(--radius-lg);
  background: var(--bg-soft);
}

.avatar-upload-preview {
  display: grid;
  place-items: center;
  width: 74px;
  height: 74px;
  overflow: hidden;
  border: 4px solid rgba(255, 255, 255, 0.86);
  border-radius: var(--radius-pill);
  background:
    radial-gradient(circle at 50% 32%, #2f2b28 0 13px, transparent 14px),
    linear-gradient(145deg, #f2c2a5, #f7dfc9);
  color: #6b4a38;
  font-size: 22px;
  font-weight: 800;
  box-shadow: var(--shadow-light);
}

.profile-editor-preview strong {
  display: block;
  margin-bottom: 5px;
  color: var(--text-primary);
  font-size: 16px;
  font-weight: 800;
}

.profile-editor-preview p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.5;
}

.input-field {
  display: grid;
  gap: 8px;
}

.input-field span {
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 800;
}

.input-field input {
  width: 100%;
  min-height: 48px;
  padding: 0 14px;
  border: 1px solid var(--border-soft);
  border-radius: 16px;
  outline: none;
  background: #fff9f1;
  color: var(--text-primary);
  font: inherit;
}

.input-field input:focus-visible {
  outline: 3px solid rgba(255, 201, 52, 0.38);
  outline-offset: 2px;
}

.preset-row {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 2px;
  scrollbar-width: none;
}

.preset-row::-webkit-scrollbar {
  display: none;
}

.preset-row button {
  flex: 0 0 auto;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  background: var(--bg-soft);
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 700;
}

.compose-mode,
.compose-type {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  padding: 6px;
  border-radius: 18px;
  background: var(--bg-soft);
}

.compose-mode button,
.compose-type button {
  min-height: 38px;
  border-radius: 14px;
  background: transparent;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 800;
}

.compose-mode button.active,
.compose-type button.active {
  background: linear-gradient(145deg, #ffca45, #ff9f87 58%, #f58ab0);
  color: #fffdfc;
}

.primary-action,
.small-action {
  min-height: 44px;
  border-radius: 16px;
  font-weight: 800;
  transition: transform 150ms ease, background 180ms ease;
}

.primary-action {
  width: 100%;
  background: var(--text-primary);
  color: #fffdfc;
}

.small-action {
  padding: 0 14px;
  background: var(--bg-soft);
  color: var(--text-primary);
  font-size: 13px;
}

.empty-box {
  display: grid;
  place-items: center;
  min-height: 164px;
  padding: 22px;
  border-radius: 24px;
  background: rgba(255, 253, 252, 0.82);
  color: var(--text-secondary);
  text-align: center;
  line-height: 1.6;
  box-shadow: var(--shadow-card);
}

@media (max-width: 380px) {
  .phone-app {
    padding-inline: 12px;
  }

  .bottom-tabs {
    width: min(calc(100% - 24px), 420px);
    padding-inline: 10px;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .hero-section,
  .quick-card,
  .nearby-card,
  .discover-card,
  .tool-item,
  .task-card,
  .message-card {
    animation: rise-in 360ms cubic-bezier(0.16, 1, 0.3, 1) both;
  }

  .quick-card:nth-child(2),
  .nearby-card:nth-child(2) {
    animation-delay: 70ms;
  }

  .quick-card:nth-child(3),
  .nearby-card:nth-child(3) {
    animation-delay: 120ms;
  }

  @keyframes rise-in {
    from {
      opacity: 0;
      transform: translateY(12px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}