:root {
  --dinner-primary: #E8784A;
  --dinner-light: #FFF0E8;
  --dinner-dark: #C05A2C;
  --dinner-gradient: linear-gradient(135deg, #E8784A 0%, #F0A060 100%);
  --drinks-primary: #7C5CE7;
  --drinks-light: #F0EAFF;
  --drinks-dark: #5B3EC4;
  --drinks-gradient: linear-gradient(135deg, #7C5CE7 0%, #A78BFA 100%);
  --brand-primary: #534AB7;
  --brand-light: #EEEDFE;
  --bg: #FAFAF8;
  --bg-secondary: #F5F5F0;
  --card: #FFFFFF;
  --text-primary: #1C1C1E;
  --text-secondary: #6E6E73;
  --text-tertiary: #AEAEB2;
  --text-placeholder: #C7C7CC;
  --border: #E5E5EA;
  --success: #34C759;
  --warning: #FF9500;
  --error: #FF3B30;
  --gold: #FFD700;
  --silver: #C0C0C0;
  --bronze: #CD7F32;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-card: 0 2px 8px rgba(0,0,0,0.06), 0 0 0 1px rgba(0,0,0,0.04);
  --session-primary: var(--dinner-primary);
  --session-light: var(--dinner-light);
  --session-dark: var(--dinner-dark);
  --session-gradient: var(--dinner-gradient);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
  background: var(--bg);
  color: var(--text-primary);
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}
.page { max-width: 28rem; margin: 0 auto; padding: 1.5rem 1rem 6rem; }
.brand-title { font-size: 1.5rem; font-weight: 700; color: var(--brand-primary); }
.brand-sub { font-size: 0.875rem; color: var(--text-secondary); }
.hero-slogan { font-size: 1.75rem; font-weight: 700; line-height: 1.2; margin: 1rem 0; }
.section-title { font-size: 1rem; font-weight: 500; margin: 0 0 0.5rem; }
.hint { font-size: 0.75rem; color: var(--text-tertiary); text-align: center; }
.btn {
  display: block; width: 100%; padding: 1rem; border: none; border-radius: 1rem;
  font-size: 1rem; font-weight: 600; cursor: pointer; font-family: inherit;
  transition: transform 100ms ease, opacity 150ms ease;
}
.btn:active:not(:disabled) { transform: scale(0.98); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn-primary { background: var(--session-gradient); color: #fff; }
.btn-wechat { background: #07C160; color: #fff; }
.btn-ghost {
  background: #fff; color: var(--session-primary);
  border: 1px solid var(--session-primary);
}
.pill {
  display: inline-flex; align-items: center; padding: 0.5rem 0.75rem;
  border-radius: 9999px; border: 1px solid var(--border); background: #fff;
  font-size: 0.875rem; color: var(--text-secondary); cursor: pointer;
}
.pill.on {
  background: var(--session-light); border-color: var(--session-primary);
  color: var(--session-dark); font-weight: 500;
}
.option-card {
  width: 100%; text-align: left; padding: 1rem; border-radius: 0.75rem;
  border: 2px solid var(--border); background: #fff; cursor: pointer;
  display: flex; gap: 0.75rem; align-items: center; font-family: inherit;
}
.option-card.on {
  border-color: var(--session-primary); background: var(--session-light);
}
.session-card {
  width: 100%; text-align: left; padding: 1.25rem; border-radius: 1rem;
  border: 2px solid var(--border); background: #fff; cursor: pointer; font-family: inherit;
}
.session-card.on-dinner {
  border-color: var(--dinner-primary); background: var(--dinner-light); transform: scale(1.02);
}
.session-card.on-drinks {
  border-color: var(--drinks-primary); background: var(--drinks-light); transform: scale(1.02);
}
.field {
  width: 100%; padding: 1rem; border-radius: 0.75rem; border: 2px solid var(--border);
  background: #fff; font-size: 16px; font-family: inherit; resize: none;
}
.field:focus { outline: none; border-color: var(--session-primary); }
.footer-bar {
  position: fixed; left: 0; right: 0; bottom: 0;
  padding: 0.75rem 1rem calc(0.75rem + env(safe-area-inset-bottom));
  background: rgba(250,250,248,0.92); backdrop-filter: blur(8px);
  border-top: 1px solid var(--border);
}
.footer-bar .inner { max-width: 28rem; margin: 0 auto; }
.modal-mask {
  position: fixed; inset: 0; background: rgba(0,0,0,0.45);
  display: flex; align-items: center; justify-content: center; z-index: 50; padding: 1rem;
}
.modal-mask.hidden { display: none; }
.modal {
  width: min(100%, 20rem); background: #fff; border-radius: 1rem; padding: 1.5rem; text-align: center;
  box-shadow: var(--shadow-md);
}
.qr-box {
  width: 10rem; height: 10rem; margin: 1rem auto; border-radius: 0.75rem;
  background:
    linear-gradient(#111 0 0) 0 0/40% 40%,
    linear-gradient(#111 0 0) 100% 0/40% 40%,
    linear-gradient(#111 0 0) 0 100%/40% 40%,
    repeating-linear-gradient(90deg, #111 0 4px, transparent 4px 8px),
    repeating-linear-gradient(#111 0 4px, transparent 4px 8px),
    #f3f3f3;
  background-repeat: no-repeat;
  position: relative;
}
.qr-box::after {
  content: '微信';
  position: absolute; inset: 38% 30%; background: #07C160; color: #fff;
  border-radius: 0.35rem; font-size: 0.75rem; display: flex; align-items: center; justify-content: center;
}
.toast {
  position: fixed; left: 50%; bottom: 5.5rem; transform: translateX(-50%);
  background: rgba(28,28,30,0.88); color: #fff; padding: 0.65rem 1rem;
  border-radius: 9999px; font-size: 0.875rem; z-index: 60; opacity: 0;
  pointer-events: none; transition: opacity 200ms ease;
}
.toast.show { opacity: 1; }
.member-grid { display: grid; gap: 0.75rem; margin: 1rem 0; }
.member-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.member-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.member-tile, .slot-tile {
  text-align: center; padding: 0.75rem 0.5rem; border-radius: 1rem;
  background: #fff; box-shadow: var(--shadow-card);
}
.avatar {
  width: 4rem; height: 4rem; margin: 0 auto; border-radius: 9999px;
  background: var(--session-light); display: flex; align-items: center; justify-content: center;
  font-size: 1.75rem; position: relative;
}
.avatar .dot {
  position: absolute; right: 0; bottom: 0; width: 0.85rem; height: 0.85rem;
  background: var(--success); border: 2px solid #fff; border-radius: 9999px;
}
.slot-plus {
  width: 4rem; height: 4rem; margin: 0 auto; border-radius: 9999px;
  border: 2px dashed var(--border); color: var(--text-tertiary);
  display: flex; align-items: center; justify-content: center; font-size: 1.75rem; font-weight: 300;
}
.slot-tile { cursor: pointer; }
.slot-tile:active { transform: scale(0.98); }
.banner {
  background: var(--session-gradient); color: #fff; border-radius: 1rem;
  padding: 1rem 1.25rem; display: flex; justify-content: space-between; align-items: center;
}
.card {
  background: #fff; border-radius: 1rem; padding: 1.25rem; box-shadow: var(--shadow-card);
}
@keyframes slideUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes popIn {
  0% { transform: scale(0); opacity: 0; }
  50% { transform: scale(1.15); opacity: 1; }
  100% { transform: scale(1); opacity: 1; }
}
@keyframes slotFlip {
  0% { transform: rotateX(0deg); opacity: 1; }
  50% { transform: rotateX(180deg); opacity: 0.4; }
  100% { transform: rotateX(360deg); opacity: 1; }
}
@keyframes fadePulse {
  0%, 100% { opacity: 0.55; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.03); }
}
.anim-slide { animation: slideUp 400ms cubic-bezier(0.16,1,0.3,1) both; }
.anim-pop { animation: popIn 400ms cubic-bezier(0.34,1.56,0.64,1); }
.join-flash { animation: popIn 450ms ease; }
.dim-slider {
  -webkit-appearance: none; appearance: none; width: 100%; height: 8px;
  border-radius: 9999px; background: var(--bg-secondary); outline: none;
}
.dim-slider::-webkit-slider-thumb {
  -webkit-appearance: none; width: 24px; height: 24px; border-radius: 50%;
  background: var(--session-primary); cursor: pointer; box-shadow: var(--shadow-md);
}
.tab-bar {
  display: flex; background: var(--bg-secondary); border-radius: 0.75rem; padding: 0.25rem; gap: 0.25rem;
}
.tab-bar button {
  flex: 1; border: none; background: transparent; padding: 0.65rem; border-radius: 0.5rem;
  font-size: 0.875rem; font-weight: 500; color: var(--text-secondary); cursor: pointer; font-family: inherit;
}
.tab-bar button.active {
  background: #fff; color: var(--text-primary); box-shadow: var(--shadow-sm);
}
.no-scrollbar::-webkit-scrollbar { display: none; }
.no-scrollbar { scrollbar-width: none; }
.hidden { display: none !important; }