:root {
  color-scheme: light;
  --bg: #f6f7fb;
  --panel: #ffffff;
  --line: #e7ebf2;
  --text: #111418;
  --muted: #707783;
  --blue: #1f8cff;
  --blue-soft: #e8f2ff;
  --danger: #ef5b63;
  --shadow: 0 12px 30px rgba(16, 24, 40, 0.08);
  --radius: 18px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; min-height: 100%; max-width: 100%; overflow-x: hidden; font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", Arial, sans-serif; background: var(--bg); color: var(--text); }
button, input, select { font: inherit; }
button { border: 0; background: none; padding: 0; }

.app { min-height: 100vh; }
.topbar { position: sticky; top: 0; z-index: 5; display: flex; justify-content: space-between; gap: 16px; align-items: center; padding: 18px 16px 14px; background: rgba(246,247,251,.96); backdrop-filter: blur(10px); border-bottom: 1px solid rgba(231,235,242,.8); }
.topbar h1 { margin: 0; font-size: 22px; line-height: 1.1; }
.topbar p { margin: 6px 0 0; color: var(--muted); font-size: 13px; line-height: 1.4; }

.content { padding: 14px 12px 24px; display: grid; gap: 14px; }
.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.stat, .panel, .modal-sheet { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.stat { padding: 14px; display: flex; flex-direction: column; gap: 8px; }
.stat span, .settings-grid span, .modal-body span { color: var(--muted); font-size: 12px; }
.stat strong { font-size: 28px; line-height: 1; }
.panel { padding: 14px; }
.panel-head, .modal-head, .option-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.panel-head h2, .modal-head h3 { margin: 0; font-size: 18px; }
.wheel-list { display: grid; gap: 10px; margin-top: 12px; }
.wheel-card { padding: 12px; border-radius: 16px; border: 1px solid var(--line); background: #fff; display: grid; gap: 10px; }
.wheel-card-top { display: flex; justify-content: space-between; gap: 8px; align-items: center; }
.wheel-card-title { display: grid; gap: 4px; }
.wheel-card-title strong { font-size: 16px; }
.wheel-card-title span { color: var(--muted); font-size: 12px; }
.scope-badge { display: inline-flex; width: fit-content; padding: 3px 8px; border-radius: 999px; font-size: 11px !important; }
.scope-hot { color: #b45309 !important; background: #fff4d6; }
.scope-mine { color: #2563eb !important; background: #e8f2ff; }
.chip-row { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { padding: 4px 8px; border-radius: 999px; background: var(--blue-soft); color: var(--blue); font-size: 12px; }
.wheel-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.primary-btn, .ghost-btn, .danger-btn { height: 38px; padding: 0 14px; border-radius: 12px; display: inline-flex; align-items: center; justify-content: center; }
.primary-btn { background: var(--blue); color: #fff; }
.ghost-btn { background: #eef3fb; color: #273042; }
.danger-btn { background: #fff0f0; color: var(--danger); }

.settings-grid { margin-top: 12px; display: grid; grid-template-columns: 1fr; gap: 10px; }
.settings-grid label, .modal-body label { display: grid; gap: 6px; }
.settings-grid input, .settings-grid select, .modal-body input { width: 100%; height: 42px; border-radius: 12px; border: 1px solid var(--line); padding: 0 12px; background: #fff; color: var(--text); }

.test-result { margin-top: 12px; padding: 14px; border-radius: 16px; background: #f9fbff; color: var(--muted); min-height: 56px; display: flex; align-items: center; }

.modal { position: fixed; inset: 0; z-index: 20; background: rgba(7, 13, 25, 0.56); display: flex; align-items: flex-end; }
.hidden { display: none !important; }
.modal-sheet { width: 100%; max-height: 92vh; overflow: hidden; border-radius: 20px 20px 0 0; display: grid; grid-template-rows: auto 1fr auto; }
.modal-head, .modal-actions { padding: 14px 14px 12px; border-bottom: 1px solid var(--line); }
.modal-actions { border-bottom: 0; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 10px; }
.modal-body { padding: 14px; overflow: auto; display: grid; gap: 12px; }
.option-list { display: grid; gap: 10px; }
.option-columns { display: grid; grid-template-columns: minmax(0, 1fr) 88px 92px 36px; gap: 8px; padding: 0 2px; color: var(--muted); font-size: 12px; }
.option-row { display: grid; grid-template-columns: minmax(0, 1fr) 88px 92px 36px; gap: 8px; align-items: center; }
.option-row input, .option-row select { height: 40px; border: 1px solid var(--line); border-radius: 12px; padding: 0 10px; }
.tiny-btn { width: 36px; height: 36px; border-radius: 12px; background: #f2f4f8; color: var(--muted); }

@media (max-width: 420px) {
  .topbar { align-items: flex-start; }
  .topbar h1 { font-size: 20px; }
  .topbar p { max-width: 210px; }
  .panel-head { align-items: flex-start; }
  .panel-head h2 { font-size: 16px; }
  .option-row { grid-template-columns: minmax(0, 1fr) 68px 52px 36px; gap: 5px; }
  .option-columns { grid-template-columns: minmax(0, 1fr) 68px 52px 36px; gap: 5px; }
  .option-row input, .option-row select { min-width: 0; padding: 0 7px; font-size: 13px; }
  .option-row input[type="color"] { padding: 3px; }
  .modal-head, .modal-actions { padding-left: 12px; padding-right: 12px; }
  .modal-body { padding: 12px; }
}

@media (min-width: 760px) {
  .content { max-width: 980px; margin: 0 auto; padding: 18px 16px 28px; }
  .settings-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .modal { align-items: center; justify-content: center; padding: 22px; }
  .modal-sheet { max-width: 720px; border-radius: 20px; max-height: 88vh; }
}