/* ==========================================================================
   WegTroller — iOS 26 Premium Design System
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');
:root {
  --accent: #1a1a2e; --accent-soft: #2d2d4a;
  --c-green: #0d6e3f; --c-green-bg: rgba(13,110,63,0.07);
  --c-red: #b91c1c; --c-red-bg: rgba(185,28,28,0.07);
  --c-amber: #92400e; --c-amber-bg: rgba(146,64,14,0.07);
  --c-blue: #1e40af; --c-blue-bg: rgba(30,64,175,0.07);
  --c-amber-light: rgba(146,64,14,0.06);
  --bg-page: #f2f2f1; --bg-card: #ffffff; --bg-subtle: #eae8e6; --bg-input: #f0f0ee;
  --text-primary: #0a0a0a; --text-secondary: #5c5c5c; --text-tertiary: #9a9a9a; --text-inverse: #ffffff;
  --border-faint: rgba(0,0,0,0.06); --border-subtle: rgba(0,0,0,0.08); --border-focus: rgba(26,26,46,0.35);
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04), 0 1px 3px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.05), 0 1px 3px rgba(0,0,0,0.04);
  --shadow-lg: 0 12px 36px rgba(0,0,0,0.08), 0 4px 10px rgba(0,0,0,0.04);
  --shadow-xl: 0 24px 60px rgba(0,0,0,0.12), 0 8px 20px rgba(0,0,0,0.06);
  --shadow-hover: 0 16px 44px rgba(0,0,0,0.09), 0 4px 12px rgba(0,0,0,0.05);
  --r-xs: 8px; --r-sm: 12px; --r-md: 16px; --r-lg: 22px; --r-xl: 28px; --r-full: 999px;
  --ease-spring: cubic-bezier(0.34,1.56,0.64,1);
  --ease-out: cubic-bezier(0.23,1,0.32,1);
  --ease-in-out: cubic-bezier(0.65,0,0.35,1);
  --dur-tiny: 120ms; --dur-fast: 180ms; --dur-normal: 240ms; --dur-slow: 340ms; --dur-modal: 380ms;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, sans-serif;
}
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }
input,button,select,textarea { font-family: inherit; -webkit-appearance: none; appearance: none; }
input::placeholder { color: var(--text-tertiary); opacity: 1; }
html,body { width: 100%; min-height: 100vh; background: linear-gradient(180deg, #f5f5f4 0%, #f2f2f1 40%, #eae8e6 100%); color: var(--text-primary); font-family: var(--font); -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility; }
body { display: flex; justify-content: center; align-items: flex-start; padding: 0; }
#app { width: 100%; max-width: 480px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; min-height: 100vh; padding: 20px 16px 120px; }
.app-header { display: flex; justify-content: space-between; align-items: center; padding: 4px 2px 8px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-icon { width: 38px; height: 38px; border-radius: 10px; background: var(--accent); display: flex; align-items: center; justify-content: center; font-size: 18px; box-shadow: 0 2px 10px rgba(10,10,10,0.18); }
.brand-text h1 { font-size: 18px; font-weight: 800; letter-spacing: -0.5px; color: var(--text-primary); }
.brand-text p { font-size: 11px; color: var(--text-tertiary); font-weight: 600; letter-spacing: 0.1px; }
.header-actions { display: flex; gap: 8px; }
.icon-btn { background: var(--bg-card); border: 1px solid var(--border-faint); color: var(--text-secondary); width: 38px; height: 38px; border-radius: var(--r-sm); display: flex; align-items: center; justify-content: center; cursor: pointer; box-shadow: var(--shadow-sm); transition: background-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-spring); }
.icon-btn:active { transform: scale(0.93); }
.apple-card { background: var(--bg-card); border: 1px solid var(--border-faint); border-radius: var(--r-lg); padding: 22px; box-shadow: var(--shadow-md), 0 0 0 1px rgba(255,255,255,0.4) inset; transition: transform var(--dur-normal) var(--ease-out), box-shadow var(--dur-normal) var(--ease-out); }
.hero-card { display: flex; flex-direction: column; align-items: center; text-align: center; position: relative; background: linear-gradient(165deg,#ffffff 0%,#fafafa 100%); border: 1px solid rgba(0,0,0,0.06); padding: 28px 20px 24px; box-shadow: var(--shadow-lg), 0 0 0 1px rgba(255,255,255,0.5) inset; }
.hero-card::before { content: ''; position: absolute; top: 0; left: 24px; right: 24px; height: 1px; background: linear-gradient(90deg,transparent,rgba(255,255,255,0.9),transparent); }
.hero-status-badge { display: inline-flex; align-items: center; gap: 6px; padding: 5px 14px; border-radius: var(--r-full); font-size: 12px; font-weight: 700; background: var(--badge-bg,var(--c-green-bg)); color: var(--badge-color,var(--c-green)); margin-bottom: 20px; transition: background-color var(--dur-normal) var(--ease-out), color var(--dur-normal) var(--ease-out); letter-spacing: 0.1px; }
.status-dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; box-shadow: 0 0 6px currentColor; }
.period-tiles { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; width: 100%; margin-top: 4px; }
.period-tile { background: var(--bg-subtle); border: 1.5px solid var(--border-faint); border-radius: var(--r-md); padding: 14px 10px 12px; transition: border-color var(--dur-normal) var(--ease-out), box-shadow var(--dur-normal) var(--ease-out), background-color var(--dur-normal) var(--ease-out), transform var(--dur-fast) var(--ease-spring); }
.period-tile:active { transform: scale(0.97); }
.period-tile.latest { border-color: var(--tile-color,rgba(0,0,0,0.12)); background: #ffffff; box-shadow: 0 4px 14px rgba(0,0,0,0.07); }
.period-tile.morning { --tile-color: rgba(30,64,175,0.35); }
.period-tile.evening { --tile-color: rgba(146,64,14,0.30); }
.period-tile-head { font-size: 11px; font-weight: 700; color: var(--text-tertiary); margin-bottom: 4px; letter-spacing: 0.3px; text-transform: uppercase; }
.period-tile.morning .period-tile-head { color: var(--c-blue); }
.period-tile.evening .period-tile-head { color: var(--c-amber); }
.period-tile-val { font-size: 30px; font-weight: 800; letter-spacing: -1.2px; line-height: 1.1; color: var(--text-primary); }
.period-tile.morning .period-tile-val { color: var(--c-blue); }
.period-tile.evening .period-tile-val { color: var(--c-amber); }
.period-tile-sub { font-size: 10px; color: var(--text-tertiary); margin-top: 4px; font-weight: 600; letter-spacing: 0.1px; }
.zone-bar-wrapper { width: 100%; margin-top: 22px; }
.zone-labels { display: flex; justify-content: space-between; font-size: 10px; font-weight: 700; color: var(--text-tertiary); margin-bottom: 8px; letter-spacing: 0.2px; text-transform: uppercase; }
.zone-track { width: 100%; height: 6px; border-radius: var(--r-full); background: #e4e4e2; display: flex; overflow: hidden; position: relative; }
.zone-segment { height: 100%; }
.segment-green { width: 42.8%; background: var(--c-green); opacity: 0.85; }
.segment-yellow { width: 21.4%; background: var(--c-amber); opacity: 0.75; }
.segment-red { width: 35.8%; background: var(--c-red); opacity: 0.70; }
.zone-pin { position: absolute; top: -4px; width: 14px; height: 14px; background: #ffffff; border: 2.5px solid var(--accent); border-radius: 50%; transform: translateX(-50%); box-shadow: 0 2px 8px rgba(0,0,0,0.22); transition: left 0.6s cubic-bezier(0.34,1.56,0.64,1); }
.zone-scale-marks { display: flex; justify-content: space-between; margin-top: 7px; font-size: 10px; color: var(--text-tertiary); font-weight: 600; }
.stat-chips { display: flex; gap: 8px; margin-top: 18px; width: 100%; }
.stat-chip { flex: 1; background: var(--bg-subtle); border: 1px solid var(--border-faint); border-radius: var(--r-sm); padding: 10px 4px 8px; display: flex; flex-direction: column; align-items: center; gap: 3px; }
.stat-chip-label { font-size: 9px; font-weight: 700; color: var(--text-tertiary); letter-spacing: 0.4px; text-transform: uppercase; }
.stat-chip-val { font-size: 14px; font-weight: 800; color: var(--text-primary); min-height: 18px; }
.stat-chip-val.up { color: var(--c-red); }
.stat-chip-val.down { color: var(--c-green); }
.actions-grid,.record-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.btn-primary,.btn-secondary { border: none; outline: none; padding: 14px 18px; border-radius: var(--r-md); font-family: inherit; font-weight: 700; font-size: 14px; display: flex; align-items: center; justify-content: center; gap: 7px; cursor: pointer; transition: background-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out), transform var(--dur-tiny) var(--ease-spring), border-color var(--dur-fast) var(--ease-out); }
.btn-primary { background: var(--accent); color: var(--text-inverse); box-shadow: 0 3px 12px rgba(10,10,10,0.18); }
.btn-primary:active { background: var(--accent-soft); transform: scale(0.97); }
.btn-secondary { background: #ffffff; border: 1px solid var(--border-subtle); color: var(--text-primary); }
.btn-secondary:active { background: #f0f0ee; transform: scale(0.97); }
.card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.card-title { font-size: 14px; font-weight: 700; color: var(--text-primary); letter-spacing: -0.1px; }
.time-range-picker { display: flex; background: var(--bg-subtle); padding: 3px; border-radius: var(--r-xs); gap: 2px; }
.range-btn { background: transparent; border: none; color: var(--text-tertiary); padding: 5px 11px; font-size: 11px; font-weight: 700; border-radius: 6px; cursor: pointer; transition: background-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-spring); letter-spacing: 0.1px; }
.range-btn.active { background: #ffffff; color: var(--text-primary); box-shadow: 0 1px 4px rgba(0,0,0,0.08); }
.range-btn:active { transform: scale(0.95); }
.chart-wrapper { width: 100%; height: 200px; }
canvas#weightChart,canvas#calorieChart { width: 100% !important; height: 100% !important; }
.chart-legend { display: flex; gap: 6px; margin-bottom: 10px; flex-wrap: wrap; }
.legend-chip { border: 1px solid var(--border-faint); background: #ffffff; border-radius: var(--r-full); padding: 4px 11px; font-size: 11px; font-weight: 700; color: var(--text-tertiary); cursor: pointer; font-family: inherit; opacity: 0.5; transition: opacity var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out), background-color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-spring); }
.legend-chip.active { opacity: 1; }
.legend-chip:active { transform: scale(0.95); }
.legend-chip[data-series="morning"].active { color: var(--c-blue); border-color: rgba(30,64,175,0.30); background: var(--c-blue-bg); }
.legend-chip[data-series="evening"].active { color: var(--c-amber); border-color: rgba(146,64,14,0.30); background: var(--c-amber-light); }
.legend-chip[data-series="avg"].active { color: var(--c-green); border-color: rgba(13,110,63,0.30); background: var(--c-green-bg); }
.trend-stats { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; margin-top: 12px; }
.trend-stat { background: var(--bg-subtle); border: 1px solid var(--border-faint); border-radius: var(--r-sm); padding: 10px 4px; text-align: center; }
.trend-stat span { display: block; font-size: 9px; color: var(--text-tertiary); font-weight: 700; margin-bottom: 4px; letter-spacing: 0.3px; text-transform: uppercase; }
.trend-stat strong { font-size: 15px; font-weight: 800; color: var(--text-primary); letter-spacing: -0.4px; }
.trend-bmi { margin-top: 8px; font-size: 10px; color: var(--text-tertiary); text-align: center; font-weight: 600; letter-spacing: 0.1px; }
.today-records-list { display: flex; flex-direction: column; gap: 6px; }
.record-item { display: flex; justify-content: space-between; align-items: center; background: var(--bg-subtle); border: 1px solid var(--border-faint); border-radius: var(--r-sm); padding: 10px 14px; }
.period-badge { display: inline-block; font-size: 10px; font-weight: 800; padding: 2px 7px; border-radius: var(--r-full); background: var(--c-blue-bg); color: var(--c-blue); margin-right: 8px; letter-spacing: 0.1px; }
.period-badge.evening { background: var(--c-amber-light); color: var(--c-amber); }
.record-weight { font-weight: 800; font-size: 15px; color: var(--text-primary); letter-spacing: -0.3px; }
.record-time { font-size: 10px; color: var(--text-tertiary); font-weight: 600; letter-spacing: 0.1px; }
.calorie-summary-card { background: linear-gradient(180deg,#ffffff 0%,#fafafa 100%); border: 1px solid var(--border-faint); border-radius: var(--r-lg); padding: 18px 20px; margin-bottom: 14px; box-shadow: var(--shadow-md); }
.calorie-header { display: flex; justify-content: space-between; font-size: 13px; font-weight: 600; margin-bottom: 10px; color: var(--text-secondary); }
.calorie-status-pill { font-size: 10px; font-weight: 800; padding: 3px 9px; border-radius: var(--r-full); letter-spacing: 0.2px; text-transform: uppercase; }
.calorie-status-normal { background: var(--c-green-bg); color: var(--c-green); }
.calorie-status-warning { background: var(--c-amber-bg); color: var(--c-amber); }
.calorie-status-excess { background: var(--c-red-bg); color: var(--c-red); }
.calorie-progress-bar { width: 100%; height: 5px; background: #e4e4e2; border-radius: var(--r-full); overflow: hidden; }
.calorie-progress-fill { height: 100%; width: 0%; background: var(--c-green); border-radius: var(--r-full); transition: width var(--dur-slow) var(--ease-out), background-color var(--dur-normal) var(--ease-out); }
.meals-container { display: flex; flex-direction: column; gap: 10px; }
.meal-box { background: var(--bg-subtle); border: 1px solid var(--border-faint); border-radius: var(--r-md); padding: 14px 16px; transition: border-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out); }
.meal-box-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.meal-title { font-size: 13px; font-weight: 700; color: var(--text-primary); letter-spacing: -0.1px; }
.meal-kcal-badge { font-size: 11px; font-weight: 700; color: var(--text-tertiary); }
.meal-input-group { display: flex; gap: 8px; min-width: 0; }
.meal-input-group > * { min-width: 0; }
.meal-text-input { flex: 1; background: #ffffff; border: 1px solid var(--border-faint); border-radius: var(--r-sm); padding: 9px 12px; font-size: 13px; color: var(--text-primary); outline: none; font-family: inherit; transition: border-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out); }
.meal-text-input:focus { border-color: var(--border-focus); box-shadow: 0 0 0 3px rgba(26,26,46,0.08); }
.meal-note-input { width: 100%; background: #ffffff; border: 1px solid var(--border-faint); border-radius: var(--r-sm); padding: 7px 12px; font-size: 12px; color: var(--text-secondary); outline: none; font-family: inherit; margin-top: 8px; transition: border-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out); }
.meal-note-input:focus { border-color: var(--border-focus); box-shadow: 0 0 0 3px rgba(26,26,46,0.08); }
.meal-save-btn { background: var(--accent); color: #fff; border: none; padding: 0 14px; border-radius: var(--r-sm); font-weight: 700; font-size: 12px; cursor: pointer; flex-shrink: 0; white-space: nowrap; transition: background-color var(--dur-fast) var(--ease-out), transform var(--dur-tiny) var(--ease-spring); }
.meal-save-btn:active { transform: scale(0.94); }
.meal-clear-btn { background: #ffffff; border: 1px solid var(--border-faint); color: var(--text-tertiary); width: 36px; border-radius: var(--r-sm); font-size: 12px; font-weight: 700; cursor: pointer; flex-shrink: 0; transition: color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out), background-color var(--dur-fast) var(--ease-out), transform var(--dur-tiny) var(--ease-spring); }
.meal-clear-btn:active { transform: scale(0.92); }
.meal-tools-row { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin-top: 8px; flex-wrap: wrap; }
.meal-photo-btn { background: var(--c-blue-bg); color: var(--c-blue); border: 1px solid rgba(30,64,175,0.15); border-radius: var(--r-sm); padding: 7px 12px; font-size: 11px; font-weight: 700; font-family: inherit; cursor: pointer; flex-shrink: 0; transition: background-color var(--dur-fast) var(--ease-out), transform var(--dur-tiny) var(--ease-spring); }
.meal-photo-btn:active { transform: scale(0.95); }
.meal-photo-btn.loading { opacity: 0.55; pointer-events: none; }
.meal-ai-btn { background: rgba(109,40,217,0.07); color: #6d28d9; border: 1px solid rgba(109,40,217,0.18); border-radius: var(--r-sm); padding: 7px 12px; font-size: 11px; font-weight: 700; font-family: inherit; cursor: pointer; flex-shrink: 0; transition: background-color var(--dur-fast) var(--ease-out), transform var(--dur-tiny) var(--ease-spring); }
.meal-ai-btn:active { transform: scale(0.95); }
.meal-ai-btn.loading { opacity: 0.55; pointer-events: none; }
.meal-manual-row { display: flex; gap: 8px; margin-top: 8px; }
.meal-manual-kcal { flex: 1; min-width: 0; background: #ffffff; border: 1px solid var(--border-faint); border-radius: var(--r-sm); padding: 8px 11px; font-size: 12px; color: var(--text-primary); outline: none; font-family: inherit; transition: border-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out); }
.meal-manual-kcal:focus { border-color: var(--border-focus); box-shadow: 0 0 0 3px rgba(26,26,46,0.08); }
.meal-manual-save { background: var(--c-green-bg); border: 1px solid rgba(13,110,63,0.20); color: var(--c-green); width: 40px; border-radius: var(--r-sm); font-size: 14px; font-weight: 700; cursor: pointer; flex-shrink: 0; transition: background-color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out), transform var(--dur-tiny) var(--ease-spring); }
.meal-manual-save:active { transform: scale(0.92); }
.meal-photo-wrap { position: relative; margin-bottom: 10px; border-radius: var(--r-sm); overflow: hidden; border: 1px solid var(--border-faint); }
.meal-photo-thumb { width: 100%; max-height: 200px; object-fit: cover; display: block; cursor: pointer; background: #e4e4e2; }
.meal-photo-actions { position: absolute; right: 8px; bottom: 8px; display: flex; gap: 6px; }
.meal-photo-actions button { background: rgba(10,10,10,0.70); color: #fff; border: none; border-radius: 8px; padding: 4px 9px; font-size: 10px; font-weight: 700; cursor: pointer; transition: background-color var(--dur-fast) var(--ease-out), transform var(--dur-tiny) var(--ease-spring); }
.meal-photo-actions button:active { transform: scale(0.93); }
.meal-parsed-result { margin-top: 8px; font-size: 11px; color: var(--text-secondary); background: #ffffff; padding: 7px 11px; border-radius: var(--r-xs); border: 1px dashed var(--border-faint); display: flex; justify-content: space-between; align-items: center; gap: 8px; flex-wrap: wrap; }
.meal-parsed-result small { display: inline-block; margin-top: 4px; color: var(--text-tertiary); font-size: 10px; line-height: 1.4; }
.nutrition-advice-card { background: linear-gradient(180deg,#ffffff 0%,#fafafa 100%); border: 1px solid var(--border-faint); border-radius: var(--r-lg); padding: 18px 20px; box-shadow: var(--shadow-md); }
.nutrition-advice-card .card-header { margin-bottom: 10px; }
.nutrition-summary,.nutrition-advice { font-size: 11px; line-height: 1.65; color: var(--text-secondary); }
.nutrition-day-assessment { margin-top: 8px; padding: 8px 10px; border-radius: var(--r-sm); background: var(--c-blue-bg); color: var(--c-blue); font-size: 11px; line-height: 1.5; }
.nutrition-advice { margin-top: 9px; padding-top: 9px; border-top: 1px dashed var(--border-faint); color: var(--text-primary); white-space: pre-wrap; }
.bowel-stats { margin-top: 0; }
.bowel-assessment { margin-top: 12px; padding: 10px 12px; border-radius: var(--r-sm); background: var(--c-green-bg); color: var(--c-green); font-size: 11px; line-height: 1.6; }
.bowel-advice { margin-top: 8px; padding: 10px 12px; border-top: 1px dashed var(--border-faint); color: var(--text-secondary); font-size: 11px; line-height: 1.6; white-space: pre-wrap; }
.bowel-checks { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 12px; }
.bowel-checks label { display: flex; align-items: center; gap: 6px; font-size: 11px; color: var(--text-secondary); }
.bowel-checks input { width: 16px; height: 16px; accent-color: var(--accent); }
.bowel-trend-stats { display: flex; gap: 8px; margin-bottom: 10px; font-size: 11px; color: var(--text-tertiary); }
.bowel-trend-stats div { flex: 1; padding: 10px; border-radius: var(--r-sm); background: var(--bg-subtle); }
.bowel-trend-stats strong { display: block; margin-top: 3px; font-size: 15px; color: var(--text-primary); }
.nutrition-table-wrap { margin-top: 10px; overflow-x: auto; border: 1px solid var(--border-faint); border-radius: var(--r-sm); background: #fff; }
.nutrition-details { margin-top: 10px; }
.nutrition-details summary { cursor: pointer; list-style: none; color: var(--c-blue); font-size: 11px; font-weight: 700; padding: 8px 0; }
.nutrition-details summary::-webkit-details-marker { display: none; }
.nutrition-details summary::after { content: '＋'; float: right; font-size: 14px; }
.nutrition-details[open] summary::after { content: '−'; }
.nutrition-table { width: 100%; border-collapse: collapse; font-size: 10px; color: var(--text-secondary); }
.nutrition-table th { color: var(--text-tertiary); font-weight: 700; background: var(--bg-subtle); }
.nutrition-table th,.nutrition-table td { padding: 7px 8px; text-align: right; border-bottom: 1px solid var(--border-faint); white-space: nowrap; }
.nutrition-table th:first-child,.nutrition-table td:first-child { text-align: left; color: var(--text-primary); }
.nutrition-table tr:last-child td { border-bottom: 0; }
.delete-food-btn { border: none; background: transparent; font-size: 16px; cursor: pointer; color: var(--c-red); padding: 4px; flex-shrink: 0; transition: opacity var(--dur-fast) var(--ease-out), transform var(--dur-tiny) var(--ease-spring); }
.delete-food-btn:active { transform: scale(0.85); }
.meal-date-nav { display: flex; align-items: center; gap: 6px; }
.date-nav-btn { width: 30px; height: 30px; border-radius: var(--r-xs); border: 1px solid var(--border-faint); background: #ffffff; color: var(--text-primary); font-size: 14px; line-height: 1; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: background-color var(--dur-fast) var(--ease-out), transform var(--dur-tiny) var(--ease-spring); }
.date-nav-btn:active { transform: scale(0.88); }
.date-nav-label { font-size: 11px; font-weight: 700; color: var(--text-primary); white-space: nowrap; }
.date-nav-today { display: inline-flex; align-items: center; font-size: 10px; font-weight: 700; color: var(--c-blue); background: var(--c-blue-bg); border: none; border-radius: 6px; padding: 4px 9px; cursor: pointer; transition: background-color var(--dur-fast) var(--ease-out), transform var(--dur-tiny) var(--ease-spring); }
.date-nav-today:active { transform: scale(0.94); }
.calendar-modal-card { max-width: 430px; }
.calendar-picker-row { display: grid; grid-template-columns: 34px minmax(0,1fr) minmax(0,1fr) 34px; align-items: center; gap: 7px; }
.calendar-select { min-width: 0; height: 34px; padding: 0 9px; border: 1px solid var(--border-faint); border-radius: var(--r-xs); background: #ffffff; color: var(--text-primary); font: 700 12px inherit; outline: none; }
.calendar-current-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin: 12px 0 9px; padding: 0 2px; }
.cal-month-label { flex: 1; font-size: 12px; font-weight: 700; color: var(--text-primary); letter-spacing: 0.1px; }
.cal-weekdays,.cal-grid { display: grid; grid-template-columns: repeat(7,1fr); gap: 3px; }
.cal-weekdays span { text-align: center; font-size: 10px; color: var(--text-tertiary); padding: 3px 0; font-weight: 700; letter-spacing: 0.2px; }
.cal-day { position: relative; aspect-ratio: 1; display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 500; color: var(--text-primary); border-radius: 8px; cursor: pointer; background: #ffffff; border: 1px solid transparent; transition: background-color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out), transform var(--dur-tiny) var(--ease-spring); }
.cal-day:active { transform: scale(0.88); }
.cal-day.blank { background: transparent; border: none; cursor: default; }
.cal-day.today { border-color: var(--c-blue); color: var(--c-blue); font-weight: 700; }
.cal-day.selected { background: var(--accent); color: #ffffff; font-weight: 700; }
.cal-dot { position: absolute; bottom: 3px; left: 50%; transform: translateX(-50%); width: 4px; height: 4px; border-radius: 50%; }
.cal-day.selected .cal-dot { background: #ffffff; }
.cal-photo-mark { position: absolute; top: 3px; right: 4px; font-size: 8px; line-height: 1; color: var(--text-tertiary); opacity: 0.8; }
.cal-day.selected .cal-photo-mark { color: #ffffff; }
.cal-dot.ok { background: var(--c-green); }
.cal-dot.warn { background: var(--c-amber); }
.cal-dot.over { background: var(--c-red); }
.profile-menu { padding: 6px 0; display: flex; flex-direction: column; }
.profile-row { display: flex; justify-content: space-between; align-items: center; background: none; border: none; padding: 14px 10px; font-size: 14px; font-weight: 600; color: var(--text-primary); font-family: inherit; border-bottom: 1px solid var(--border-faint); cursor: pointer; text-align: left; transition: background-color var(--dur-fast) var(--ease-out); }
.profile-row:last-child { border-bottom: none; }
.profile-row:active { background: var(--bg-subtle); }
.profile-row span { color: var(--text-tertiary); font-size: 16px; }
.about-card p { font-size: 11px; color: var(--text-tertiary); line-height: 1.9; margin-top: 4px; }
.period-switch { display: flex; background: var(--bg-subtle); padding: 3px; border-radius: var(--r-xs); gap: 2px; }
.period-option { flex: 1; background: transparent; border: none; padding: 8px 0; border-radius: 7px; font-size: 12px; font-weight: 700; color: var(--text-tertiary); font-family: inherit; cursor: pointer; transition: background-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-spring); letter-spacing: 0.1px; }
.period-option.active { background: #ffffff; color: var(--text-primary); box-shadow: 0 1px 4px rgba(0,0,0,0.07); }
.period-option:active { transform: scale(0.96); }
.form-hint { font-size: 10px; color: var(--text-tertiary); margin-top: -3px; }
.form-group { margin-bottom: 14px; }
.form-label { display: block; font-size: 11px; font-weight: 700; color: var(--text-secondary); margin-bottom: 5px; letter-spacing: 0.3px; text-transform: uppercase; }
.form-input { width: 100%; background: var(--bg-input); border: 1px solid var(--border-faint); border-radius: var(--r-sm); padding: 11px 13px; color: var(--text-primary); font-family: inherit; font-size: 14px; outline: none; transition: border-color var(--dur-fast) var(--ease-out), background-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out); }
.form-input:focus { border-color: var(--border-focus); background: #ffffff; box-shadow: 0 0 0 3px rgba(26,26,46,0.08); }
.form-section-title { font-size: 11px; font-weight: 800; color: var(--text-primary); margin: 6px 0 10px; padding-top: 6px; letter-spacing: 0.4px; text-transform: uppercase; }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; }
.form-row-3 .form-group { margin-bottom: 10px; }
.notification-settings { display: flex; flex-direction: column; gap: 12px; padding: 12px 14px; margin-bottom: 14px; background: var(--bg-subtle); border: 1px solid var(--border-faint); border-radius: var(--r-sm); }
.notification-settings .form-group { margin-bottom: 0; }
.setting-toggle-row { display: flex; align-items: center; justify-content: space-between; gap: 14px; cursor: pointer; }
.setting-toggle-row span { display: flex; flex-direction: column; gap: 2px; }
.setting-toggle-row strong { font-size: 13px; color: var(--text-primary); }
.setting-toggle-row small { font-size: 10px; color: var(--text-tertiary); }
.setting-toggle-row input { appearance: none; -webkit-appearance: none; position: relative; flex: 0 0 auto; width: 42px; height: 24px; border: 0; border-radius: 12px; background: #c7c7c5; cursor: pointer; transition: background-color var(--dur-fast) var(--ease-out); }
.setting-toggle-row input::after { content: ''; position: absolute; top: 3px; left: 3px; width: 18px; height: 18px; border-radius: 50%; background: #ffffff; box-shadow: 0 1px 3px rgba(0,0,0,0.22); transition: transform var(--dur-fast) var(--ease-spring); }
.setting-toggle-row input:checked { background: var(--accent); }
.setting-toggle-row input:checked::after { transform: translateX(18px); }
.notification-items { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.notification-items label { display: flex; align-items: center; gap: 6px; min-width: 0; font-size: 11px; color: var(--text-secondary); }
.notification-items input { appearance: auto; -webkit-appearance: checkbox; display: inline-block; flex: 0 0 auto; width: 16px; height: 16px; accent-color: var(--accent); }
.modal-tabs { display: flex; background: var(--bg-subtle); padding: 3px; border-radius: var(--r-xs); margin-bottom: 14px; }
.modal-tab { flex: 1; background: transparent; border: none; padding: 7px 0; font-size: 12px; font-weight: 700; color: var(--text-tertiary); border-radius: 6px; cursor: pointer; font-family: inherit; transition: background-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-spring); }
.modal-tab.active { background: #ffffff; color: var(--text-primary); box-shadow: 0 1px 4px rgba(0,0,0,0.07); }
.modal-tab:active { transform: scale(0.96); }
#dataModalContent { max-height: 68vh; overflow-y: auto; }
.history-summary { font-size: 12px; color: var(--text-secondary); background: var(--bg-subtle); border: 1px solid var(--border-faint); border-radius: var(--r-sm); padding: 9px 13px; margin-bottom: 12px; }
.history-list { display: flex; flex-direction: column; gap: 6px; }
.history-item { display: flex; justify-content: space-between; align-items: center; background: var(--bg-subtle); border: 1px solid var(--border-faint); padding: 11px 14px; border-radius: var(--r-sm); gap: 10px; }
.history-weight { font-weight: 700; font-size: 14px; color: var(--text-primary); letter-spacing: -0.2px; }
.history-date { font-size: 10px; color: var(--text-tertiary); margin-top: 2px; font-weight: 600; }
.zone-badge { font-size: 10px; font-weight: 600; }
.history-meal-row { display: flex; justify-content: space-between; align-items: center; gap: 10px; font-size: 11px; color: var(--text-secondary); padding: 3px 0; border-top: 1px dashed var(--border-faint); margin-top: 5px; }
.history-meal-row strong { color: var(--text-primary); white-space: nowrap; }
.history-empty { text-align: center; color: var(--text-tertiary); font-size: 12px; padding: 20px 0; font-weight: 600; }
.history-day { background: #ffffff; border: 1px solid var(--border-faint); border-radius: var(--r-sm); padding: 11px; display: flex; flex-direction: column; gap: 7px; }
.history-day-head { display: flex; justify-content: space-between; align-items: center; font-size: 11px; font-weight: 800; color: var(--text-primary); padding-bottom: 5px; border-bottom: 1px dashed var(--border-faint); letter-spacing: 0.2px; }
.day-detail-summary { display: grid; grid-template-columns: 1fr auto; align-items: baseline; gap: 2px 10px; padding: 13px 14px; margin-bottom: 12px; border-radius: var(--r-md); background: var(--accent); color: #ffffff; }
.day-detail-summary span { font-size: 11px; font-weight: 700; opacity: 0.72; }
.day-detail-summary strong { grid-row: span 2; font-size: 18px; letter-spacing: 0; }
.day-detail-summary small { font-size: 10px; opacity: 0.65; }
.day-meal-list { display: flex; flex-direction: column; gap: 9px; }
.day-meal-card { display: grid; grid-template-columns: 88px minmax(0, 1fr); min-height: 88px; overflow: hidden; border: 1px solid var(--border-faint); border-radius: var(--r-md); background: #ffffff; box-shadow: var(--shadow-sm); }
.day-meal-photo { width: 88px; height: 100%; min-height: 88px; padding: 0; border: 0; background: var(--bg-subtle); cursor: pointer; }
.day-meal-photo:active { opacity: 0.78; }
.day-meal-photo img { display: block; width: 100%; height: 100%; object-fit: cover; }
.day-meal-photo.empty { display: flex; align-items: center; justify-content: center; color: var(--text-tertiary); font-size: 10px; }
.day-meal-body { min-width: 0; padding: 10px 11px; }
.day-meal-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.day-meal-head strong { font-size: 12px; color: var(--text-primary); }
.day-meal-head span { font-size: 10px; font-weight: 700; color: var(--text-secondary); white-space: nowrap; }
.day-meal-body h4 { margin-top: 6px; overflow-wrap: anywhere; font-size: 12px; font-weight: 600; color: var(--text-primary); letter-spacing: 0; }
.day-meal-body p { margin-top: 4px; overflow-wrap: anywhere; font-size: 10px; line-height: 1.45; color: var(--text-tertiary); }
.day-meal-body .day-meal-ai { color: var(--text-secondary); }
.toast { position: fixed; left: 50%; bottom: 100px; transform: translateX(-50%) translateY(12px) scale(0.95); background: rgba(10,10,10,0.88); color: #fff; font-size: 12px; font-weight: 600; padding: 9px 16px; border-radius: var(--r-full); max-width: 86vw; text-align: center; opacity: 0; pointer-events: none; transition: opacity var(--dur-fast) var(--ease-out), transform var(--dur-normal) var(--ease-spring); z-index: 1000; letter-spacing: 0.1px; backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0) scale(1); }
.lightbox-img { cursor: pointer; box-shadow: 0 24px 64px rgba(0,0,0,0.4); }
.modal-overlay { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; background: rgba(10,10,10,0.35); backdrop-filter: blur(16px) saturate(1.8); -webkit-backdrop-filter: blur(16px) saturate(1.8); display: flex; justify-content: center; align-items: center; z-index: 999; opacity: 0; pointer-events: none; transition: opacity var(--dur-modal) var(--ease-out); padding: 20px; }
.modal-overlay.active { opacity: 1; pointer-events: auto; }
.modal-card { width: 100%; max-width: 420px; max-height: calc(100vh - 40px); max-height: calc(100dvh - 40px); overflow-y: auto; overscroll-behavior: contain; -webkit-overflow-scrolling: touch; background: rgba(255,255,255,0.92); border: 1px solid rgba(255,255,255,0.6); border-radius: var(--r-xl); padding: 24px; box-shadow: var(--shadow-xl); transform: translateY(20px) scale(0.96); transition: transform var(--dur-modal) cubic-bezier(0.34,1.56,0.64,1); }
.modal-overlay.active .modal-card { transform: translateY(0) scale(1); }
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.modal-header h3 { font-size: 17px; font-weight: 800; color: var(--text-primary); letter-spacing: -0.3px; }
.close-btn { background: transparent; border: none; color: var(--text-tertiary); font-size: 20px; cursor: pointer; width: 32px; height: 32px; display: flex; align-items: center; justify-content: center; border-radius: var(--r-xs); transition: background-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out), transform var(--dur-tiny) var(--ease-spring); }
.close-btn:hover { background: var(--bg-subtle); color: var(--text-primary); }
.close-btn:active { transform: scale(0.90); }
#screens { display: flex; flex-direction: column; gap: 14px; }
.screen { display: none; flex-direction: column; gap: 14px; }
.screen.active { display: flex; animation: screen-enter var(--dur-slow) var(--ease-out) both; }
@keyframes screen-enter { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
.screen.active .apple-card,.screen.active .calorie-summary-card { animation: card-stagger var(--dur-slow) var(--ease-out) both; }
.screen.active .apple-card:nth-child(1) { animation-delay: 0ms; }
.screen.active .apple-card:nth-child(2) { animation-delay: 50ms; }
.screen.active .apple-card:nth-child(3) { animation-delay: 100ms; }
.screen.active .period-tiles,.screen.active .stat-chips,.screen.active .zone-bar-wrapper { animation: card-stagger var(--dur-normal) var(--ease-out) both; }
.screen.active .stat-chips { animation-delay: 80ms; }
.screen.active .zone-bar-wrapper { animation-delay: 60ms; }
@keyframes card-stagger { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
/* Tab Bar: iOS 26 segmented */
.tab-bar {
  position: fixed; left: 14px; right: 14px;
  bottom: calc(12px + env(safe-area-inset-bottom));
  margin: 0 auto; max-width: 452px;
  display: flex;
  background: rgba(255,255,255,0.82);
  -webkit-backdrop-filter: blur(32px) saturate(2) contrast(1.08);
  backdrop-filter: blur(32px) saturate(2) contrast(1.08);
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: 20px;
  padding: 4px;
  z-index: 60;
  box-shadow: 0 1px 0 rgba(255,255,255,0.7) inset, 0 2px 4px rgba(0,0,0,0.04), 0 12px 40px rgba(10,10,10,0.10);
}
.tab-btn {
  flex: 1; background: transparent; border: none;
  padding: 8px 0 6px; display: flex; flex-direction: column;
  align-items: center; gap: 2px; font-family: inherit;
  font-size: 20px; color: var(--text-tertiary);
  cursor: pointer; position: relative;
  transition: color var(--dur-normal) var(--ease-out);
  -webkit-tap-highlight-color: transparent;
}
.tab-btn span {
  font-size: 9px; font-weight: 700; letter-spacing: 0.2px;
  position: relative; transition: color var(--dur-normal) var(--ease-out);
}
.tab-btn .tab-ico {
  position: relative; display: flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; border-radius: 10px;
  transition: background-color var(--dur-normal) var(--ease-out), transform var(--dur-fast) var(--ease-spring);
}
.tab-btn.active .tab-ico { background: rgba(26,26,46,0.08); }
.tab-btn.active { color: var(--text-primary); }
.tab-btn:active .tab-ico { transform: scale(0.90); }
.tab-btn:active { color: var(--text-secondary); }
@media (hover: hover) and (pointer: fine) {
  .icon-btn:hover { background: var(--bg-subtle); color: var(--text-primary); border-color: var(--border-subtle); }
  .apple-card:hover { transform: translateY(-1px); box-shadow: var(--shadow-hover); }
  .meal-box:hover { border-color: var(--border-subtle); box-shadow: 0 3px 10px -4px rgba(10,10,10,0.07); }
  .meal-save-btn:hover { background: #2d2d4a; }
  .meal-clear-btn:hover { color: var(--c-red); border-color: rgba(185,28,28,0.25); background: var(--c-red-bg); }
  .date-nav-btn:hover { background: var(--bg-subtle); }
  .date-nav-today:hover { background: var(--c-blue-bg); }
  .cal-day:hover { background: #ffffff; border-color: var(--border-subtle); }
  .meal-photo-btn:hover { background: rgba(30,64,175,0.12); }
  .meal-ai-btn:hover { background: rgba(109,40,217,0.12); }
  .meal-manual-save:hover { background: var(--c-green-bg); border-color: rgba(13,110,63,0.30); }
  .meal-photo-actions button:hover { background: rgba(10,10,10,0.88); }
  .profile-row:hover { background: var(--bg-subtle); }
  .period-tile.latest:hover { border-color: var(--tile-color); }
  .btn-primary:hover { background: #2d2d4a; }
  .btn-secondary:hover { background: #f0f0ee; }
  .legend-chip:hover { opacity: 0.8; }
  .tab-btn .tab-ico:hover { background: rgba(26,26,46,0.05); }
  .tab-btn.active .tab-ico:hover { background: rgba(26,26,46,0.12); }
}
@media (max-width: 480px) {
  body { padding: 0; }
  #app { padding: 16px 14px 112px; }
  .hero-card { padding: 22px 16px 20px; }
  .current-weight-val { font-size: 48px; }
  .actions-grid,.record-actions { grid-template-columns: 1fr; }
  input,select,textarea { font-size: 16px !important; }
  .date-nav-btn { width: 34px; height: 34px; }
  .icon-btn { width: 40px; height: 40px; }
  .meal-save-btn { padding: 0 16px; }
  .notification-items { grid-template-columns: 1fr; }
  .modal-overlay { padding: max(12px, env(safe-area-inset-top)) 12px max(12px, env(safe-area-inset-bottom)); }
  .modal-card { max-height: calc(100vh - 24px); max-height: calc(100dvh - 24px); padding: 20px 18px; }
}
@media (prefers-reduced-motion: reduce) {
  *,*::before,*::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

#calendarModal .cal-grid { gap: 5px; }
#calendarModal .cal-day { min-height: 42px; font-size: 13px; border-color: var(--border-faint); }
#calendarModal .cal-weekdays { margin-bottom: 5px; }