@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;500;700&display=swap');

:root {
    /* Color Palette */
    --color-bg: #121212;
    --color-surface: #1e1e1e;
    --color-primary: #9fa8da;
    --color-accent: #69f0ae; /* Zelená - Jídlo/Hubnutí */
    --color-danger: #ff5252; /* Červená - Půst */
    --color-blue: #448aff;   /* Modrá - Ketóza/Fáze */
    --color-text: #e3e2e6;
    --color-text-dim: #a0a0a0;
    --color-border: #333333;
    --color-input-bg: #2c2c2c;
    
    --radius-md: 16px;
}

* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }
body { font-family: 'Roboto', sans-serif; background: var(--color-bg); color: var(--color-text); height: 100vh; overflow: hidden; }

/* FIX: Oprava problikávání sekcí */
.hidden { display: none !important; }

/* Utility */
.text-center { text-align: center; }
.text-danger { color: var(--color-danger); }
.text-success { color: var(--color-accent); }
.full-width { width: 100%; margin-top: 10px; }

/* Layout */
.app-container { display: flex; flex-direction: column; height: 100vh; max-width: 600px; margin: 0 auto; background: var(--color-bg); }
.main-content { flex: 1; overflow-y: auto; padding: 16px; padding-bottom: 90px; }
.section-title { margin: 10px 0 15px 4px; font-size: 0.9rem; text-transform: uppercase; letter-spacing: 1px; color: var(--color-text-dim); }

/* Header */
.app-bar { background: var(--color-surface); padding: 12px 16px; display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--color-border); }
.app-title-wrapper { display: flex; align-items: center; gap: 8px; }
.app-logo { color: var(--color-accent); font-size: 26px; }
.app-title { font-size: 1.1rem; font-weight: 700; }
.header-actions { display: flex; align-items: center; gap: 12px; }
.user-badge { font-size: 0.85rem; background: #333; padding: 6px 12px; border-radius: 20px; font-weight: bold; cursor: pointer; min-width: 60px; text-align: center; }
.icon-btn { background: none; border: none; color: var(--color-text); cursor: pointer; display: flex; align-items: center; justify-content: center; padding: 4px; }

/* Tabs */
.tabs-container { background: var(--color-surface); padding-bottom: env(safe-area-inset-bottom); border-top: 1px solid var(--color-border); display: flex; justify-content: space-around; position: fixed; bottom: 0; width: 100%; max-width: 600px; z-index: 20; }
.tab { flex: 1; padding: 10px 0; background: none; border: none; color: var(--color-text-dim); cursor: pointer; display: flex; flex-direction: column; align-items: center; gap: 4px; transition: color 0.3s; }
.tab.active { color: var(--color-primary); }
.tab.active .material-symbols-outlined { font-variation-settings: 'FILL' 1; }

/* Cards & Forms */
.card { background: var(--color-surface); border-radius: var(--radius-md); padding: 16px; margin-bottom: 16px; border: 1px solid var(--color-border); }
.card-header { font-weight: bold; margin-bottom: 12px; display: flex; align-items: center; gap: 8px; color: var(--color-text-dim); }

.form-group { margin-bottom: 15px; }
.form-group label { display: block; font-size: 0.85rem; color: var(--color-text-dim); margin-bottom: 6px; }
.form-input, select.form-input { width: 100%; background: var(--color-input-bg); border: 1px solid var(--color-border); color: #fff; padding: 12px; border-radius: 8px; font-size: 1rem; }
.btn-primary { background: var(--color-primary); color: #000; border: none; padding: 14px; border-radius: 8px; font-weight: bold; font-size: 1rem; cursor: pointer; transition: opacity 0.2s; }
.btn-primary:active { opacity: 0.8; }
.btn-text { background: none; border: none; text-decoration: underline; cursor: pointer; font-size: 0.9rem; padding: 10px; }

/* Weight Inputs */
.weight-form { display: flex; flex-direction: column; gap: 12px; }
.input-group { display: flex; gap: 10px; }
.input-group input { flex: 1; background: var(--color-input-bg); border: 1px solid var(--color-border); color: #fff; padding: 12px; border-radius: 8px; font-size: 1rem; font-family: sans-serif; }

/* Stats Grid */
.stats-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; margin-bottom: 16px; }
.stat-box { background: var(--color-surface); padding: 12px 8px; border-radius: 12px; text-align: center; border: 1px solid var(--color-border); }
.stat-box small { display: block; color: var(--color-text-dim); font-size: 0.7rem; margin-bottom: 4px; }
.stat-box strong { font-size: 1rem; }

/* Timer Visuals */
.timer-wrapper { position: relative; width: 220px; height: 220px; margin: 20px auto; }
.timer-svg { transform: rotate(-90deg); width: 100%; height: 100%; }
.timer-bg { fill: none; stroke: #333; stroke-width: 8; }
.timer-progress { fill: none; stroke: var(--color-accent); stroke-width: 8; stroke-linecap: round; stroke-dasharray: 283; stroke-dashoffset: 0; transition: stroke-dashoffset 1s linear, stroke 0.5s ease; }
.timer-text { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); text-align: center; }
#timerValue { font-size: 3.5rem; font-weight: 700; line-height: 1; font-feature-settings: "tnum"; font-variant-numeric: tabular-nums; }
#timerLabel { font-size: 0.9rem; color: var(--color-text-dim); text-transform: uppercase; letter-spacing: 2px; }

/* Phase Display (NOVÉ) */
.phase-container { background: rgba(255,255,255,0.03); border-radius: 12px; padding: 10px 16px; display: inline-flex; align-items: center; gap: 12px; margin-top: 5px; border: 1px solid var(--color-border); text-align: left; max-width: 90%; }
.phase-icon { color: var(--color-blue); font-size: 28px; }
.phase-info { display: flex; flex-direction: column; }
.phase-label { font-size: 0.75rem; color: var(--color-text-dim); text-transform: uppercase; }
.phase-value { font-weight: bold; font-size: 0.95rem; color: var(--color-blue); }

/* Status Logic & Colors */
.status-chip { display: inline-block; padding: 8px 16px; border-radius: 20px; font-weight: bold; text-transform: uppercase; font-size: 0.85rem; letter-spacing: 1px; margin-bottom: 10px; }
.status-eating .timer-progress { stroke: var(--color-accent); }
.status-eating #statusBadge { background: rgba(105, 240, 174, 0.15); color: var(--color-accent); }
.status-fasting .timer-progress { stroke: var(--color-danger); }
.status-fasting #statusBadge { background: rgba(255, 82, 82, 0.15); color: var(--color-danger); }

/* Lists & SOS */
.sos-card { border: 1px solid var(--color-danger); background: rgba(255, 82, 82, 0.05); }
.sos-actions { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 10px; }
.sos-item { background: rgba(255,255,255,0.05); padding: 10px 4px; border-radius: 8px; text-align: center; font-weight: 500; font-size: 0.8rem; }
.shop-item { display: flex; align-items: center; padding: 14px 0; border-bottom: 1px solid var(--color-border); cursor: pointer; user-select: none; }
.checkbox-circle { width: 22px; height: 22px; border: 2px solid var(--color-text-dim); border-radius: 50%; margin-right: 14px; flex-shrink: 0; }
.shop-item.checked .checkbox-circle { background: var(--color-accent); border-color: var(--color-accent); position: relative; }
.shop-item.checked span { text-decoration: line-through; opacity: 0.4; }

/* RECEPTY (AKORDEON) */
.day-card { background: var(--color-surface); border-radius: var(--radius-md); border: 1px solid var(--color-border); margin-bottom: 12px; overflow: hidden; }
.day-header { padding: 16px; display: flex; justify-content: space-between; align-items: center; background: rgba(255,255,255,0.02); cursor: pointer; font-weight: bold; }
.day-header.completed { color: var(--color-accent); }
.day-content { display: none; padding: 0 16px 16px 16px; border-top: 1px solid var(--color-border); animation: fadeIn 0.3s ease; }
.day-card.open .day-content { display: block; }
.day-card.open .day-header { background: rgba(255,255,255,0.05); }
.recipe-item { margin-top: 12px; padding-bottom: 12px; border-bottom: 1px solid var(--color-border); cursor: pointer; }
.recipe-item:last-child { border-bottom: none; padding-bottom: 0; }
.recipe-title { display: flex; align-items: center; font-size: 1rem; font-weight: 500; margin-bottom: 4px; }
.recipe-meta { font-size: 0.8rem; color: var(--color-primary); margin-bottom: 6px; display: block; margin-left: 36px; }
.recipe-desc { font-size: 0.9rem; color: var(--color-text-dim); margin-left: 36px; line-height: 1.4; }
.recipe-checkbox { width: 24px; height: 24px; border: 2px solid var(--color-text-dim); border-radius: 6px; margin-right: 12px; display: flex; align-items: center; justify-content: center; transition: 0.2s; flex-shrink: 0; }
.recipe-item.checked .recipe-checkbox { background: var(--color-accent); border-color: var(--color-accent); }
.recipe-item.checked .recipe-checkbox::after { content: '✓'; color: #000; font-weight: bold; }
.recipe-item.checked .recipe-title span, .recipe-item.checked .recipe-desc { text-decoration: line-through; opacity: 0.5; }
.motivation-text { font-style: italic; color: var(--color-text-dim); margin-top: 8px; font-size: 0.95rem; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(-5px); } to { opacity: 1; transform: translateY(0); } }