@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

:root {
    --bg:        #f5f7fa;
    --surface:   #ffffff;
    --surface2:  #f0f4f8;
    --blue:      #5a8fc4;
    --blue-soft: #d4e4f7;
    --green:     #5ac49e;
    --green-soft:#d4f5e4;
    --pink:      #e47ba8;
    --pink-soft: #f5d4e4;
    --amber:     #e8a857;
    --amber-soft:#f9e5c8;
    --purple:    #9b8fc4;
    --purple-soft:#e4d4f7;
    --teal:      #29b8b8;
    --teal-soft: #c8f0f0;
    --text:      #1a1a2e;
    --text-muted:#6b7280;
    --border:    #e5e7eb;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.05);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.10), 0 4px 16px rgba(0,0,0,0.06);
    --radius:    16px;
    --radius-sm: 10px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    background-image:
        radial-gradient(ellipse at 0% 0%, rgba(41,184,184,0.09) 0%, transparent 55%),
        radial-gradient(ellipse at 100% 100%, rgba(90,196,158,0.08) 0%, transparent 55%);
    padding: 24px 20px;
    min-height: 100vh;
    color: var(--text);
    -webkit-font-smoothing: antialiased;
}

.container { max-width: 1400px; margin: 0 auto; }

/* ── Header ── */
.header { text-align: center; margin-bottom: 32px; }
.main-title { font-size: 38px; font-weight: 800; color: var(--text); letter-spacing: -0.5px; margin-bottom: 8px; }
.subtitle { font-size: 10.5px; letter-spacing: 3px; color: var(--text-muted); text-transform: uppercase; font-weight: 700; margin: 6px 0; }
.current-date { font-size: 14px; color: var(--text-muted); font-weight: 500; margin-top: 4px; }

/* ── Controls ── */
.controls {
    display: flex; gap: 10px; justify-content: center;
    margin: 20px 0; flex-wrap: wrap;
}
.select-box {
    padding: 10px 16px; border: 1.5px solid var(--border);
    border-radius: var(--radius-sm); font-size: 14px; font-weight: 600;
    background: var(--surface); color: var(--text); font-family: inherit;
    cursor: pointer; transition: border-color 0.2s; box-shadow: var(--shadow-sm);
}
.select-box:focus { outline: none; border-color: var(--teal); box-shadow: 0 0 0 3px rgba(41,184,184,0.12); }

.primary-btn {
    background: linear-gradient(135deg, var(--teal) 0%, #1a9898 100%);
    color: white; border: none; padding: 10px 22px;
    border-radius: var(--radius-sm); font-size: 14px; font-weight: 700;
    cursor: pointer; font-family: inherit;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 4px 14px rgba(41,184,184,0.35);
}
.primary-btn:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(41,184,184,0.45); }
.primary-btn:active { transform: translateY(0); }

.download-buttons { display: flex; gap: 10px; justify-content: center; margin-top: 16px; flex-wrap: wrap; }
.download-btn {
    background: white; color: var(--teal); border: 1.5px solid var(--teal-soft);
    padding: 9px 18px; border-radius: var(--radius-sm);
    font-size: 13px; font-weight: 700; cursor: pointer; font-family: inherit;
    transition: all 0.2s; box-shadow: var(--shadow-sm);
}
.download-btn:hover { background: var(--teal); color: white; border-color: var(--teal); transform: translateY(-1px); }

/* ── Main Grid ── */
.dashboard { display: grid; grid-template-columns: 280px 1fr 320px; gap: 20px; }
.left-section, .right-section { display: flex; flex-direction: column; gap: 16px; }
.center-section { display: flex; flex-direction: column; gap: 16px; }

/* ── Metric Cards ── */
.metric-card {
    background: var(--surface); border-radius: var(--radius);
    padding: 22px; box-shadow: var(--shadow-md); border: 1px solid var(--border);
}
.metric-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 16px;
}
.metric-title { font-size: 10.5px; letter-spacing: 2.5px; text-transform: uppercase; font-weight: 800; }
.metric-title.teal   { color: var(--teal); }
.metric-title.green  { color: var(--green); }
.metric-title.blue   { color: var(--blue); }
.metric-title.amber  { color: var(--amber); }
.metric-title.pink   { color: var(--pink); }
.metric-title.purple { color: var(--purple); }

.metric-badge {
    font-size: 11px; font-weight: 700; padding: 4px 12px; border-radius: 40px;
}
.badge-teal   { background: var(--teal-soft);   color: var(--teal); }
.badge-green  { background: var(--green-soft);  color: var(--green); }
.badge-amber  { background: var(--amber-soft);  color: #c07000; }
.badge-pink   { background: var(--pink-soft);   color: var(--pink); }
.badge-blue   { background: var(--blue-soft);   color: var(--blue); }

/* ── Water Tracker ── */
.water-card { background: linear-gradient(135deg, var(--teal-soft) 0%, #b8ecec 100%); border: 1px solid rgba(41,184,184,0.2); }
.water-display {
    text-align: center; margin: 10px 0;
}
.water-amount { font-size: 42px; font-weight: 900; color: var(--teal); letter-spacing: -1px; }
.water-unit { font-size: 14px; color: var(--text-muted); font-weight: 500; }
.water-goal { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

.water-progress-bar {
    height: 10px; background: rgba(41,184,184,0.2); border-radius: 99px;
    margin: 12px 0; overflow: hidden;
}
.water-progress-fill {
    height: 100%; background: linear-gradient(90deg, var(--teal), #1a9898);
    border-radius: 99px; transition: width 0.5s cubic-bezier(0.16,1,0.3,1);
}

.water-glasses { display: flex; gap: 6px; flex-wrap: wrap; justify-content: center; margin: 12px 0; }
.glass-icon {
    font-size: 22px; cursor: pointer; opacity: 0.3;
    transition: opacity 0.2s, transform 0.2s;
}
.glass-icon.filled { opacity: 1; }
.glass-icon:hover { transform: scale(1.2); }

.water-btns { display: flex; gap: 8px; margin-top: 14px; }
.w-btn {
    flex: 1; padding: 10px; border: none; border-radius: var(--radius-sm);
    font-size: 13px; font-weight: 700; cursor: pointer; font-family: inherit;
    transition: all 0.2s;
}
.w-add { background: var(--teal); color: white; }
.w-add:hover { background: #1a9898; transform: translateY(-1px); }
.w-remove { background: rgba(41,184,184,0.15); color: var(--teal); }
.w-remove:hover { background: rgba(41,184,184,0.25); }

/* ── Sleep Card ── */
.sleep-card { background: linear-gradient(135deg, var(--purple-soft) 0%, #d8c8f4 100%); border: 1px solid rgba(155,143,196,0.2); }
.sleep-display { text-align: center; }
.sleep-hours { font-size: 44px; font-weight: 900; color: var(--purple); letter-spacing: -1px; }
.sleep-label { font-size: 13px; color: var(--text-muted); }

.sleep-quality-row { display: flex; gap: 8px; margin-top: 14px; justify-content: center; }
.quality-btn {
    padding: 7px 12px; border: 1.5px solid var(--border); border-radius: 40px;
    font-size: 12px; font-weight: 600; cursor: pointer; background: white;
    font-family: inherit; transition: all 0.2s;
}
.quality-btn.active { background: var(--purple); color: white; border-color: var(--purple); }

.sleep-input-row { display: flex; gap: 8px; margin-top: 14px; align-items: center; }
.sleep-input-row input {
    flex: 1; padding: 10px 14px; border: 1.5px solid var(--border);
    border-radius: var(--radius-sm); font-size: 14px; font-weight: 600;
    background: white; color: var(--text); font-family: inherit;
}
.sleep-input-row input:focus { outline: none; border-color: var(--purple); }
.s-log-btn {
    padding: 10px 16px; background: var(--purple); color: white; border: none;
    border-radius: var(--radius-sm); font-size: 13px; font-weight: 700;
    cursor: pointer; font-family: inherit; transition: all 0.2s;
}
.s-log-btn:hover { transform: translateY(-1px); }

/* ── BMI Card ── */
.bmi-card { background: linear-gradient(135deg, var(--blue-soft) 0%, #c8d8f0 100%); border: 1px solid rgba(90,143,196,0.2); }
.bmi-inputs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 14px; }
.bmi-field label { font-size: 10.5px; letter-spacing: 1.5px; text-transform: uppercase; font-weight: 700; color: var(--text-muted); display: block; margin-bottom: 6px; }
.bmi-field input {
    width: 100%; padding: 10px 12px; border: 1.5px solid var(--border);
    border-radius: var(--radius-sm); font-size: 15px; font-weight: 700;
    background: white; color: var(--text); font-family: inherit;
}
.bmi-field input:focus { outline: none; border-color: var(--blue); }
.bmi-result-row { display: flex; align-items: center; gap: 14px; margin-top: 4px; }
.bmi-number { font-size: 46px; font-weight: 900; color: var(--blue); letter-spacing: -1px; }
.bmi-category { font-size: 13px; font-weight: 700; }
.bmi-bar-wrap { flex: 1; }
.bmi-bar { height: 8px; border-radius: 99px; background: linear-gradient(90deg, var(--blue-soft), var(--green), var(--amber), var(--pink)); position: relative; }
.bmi-indicator {
    width: 14px; height: 14px; background: var(--text); border-radius: 50%;
    position: absolute; top: -3px; transform: translateX(-50%);
    transition: left 0.4s cubic-bezier(0.16,1,0.3,1);
}
.bmi-range-labels { display: flex; justify-content: space-between; font-size: 10px; color: var(--text-muted); margin-top: 4px; }

/* ── Steps Card ── */
.steps-card { background: linear-gradient(135deg, var(--green-soft) 0%, #c0ecd8 100%); border: 1px solid rgba(90,196,158,0.2); }
.steps-ring-wrap { display: flex; justify-content: center; margin: 10px 0; }
.steps-ring { position: relative; width: 120px; height: 120px; }
.steps-ring svg { transform: rotate(-90deg); }
.steps-ring-bg { fill: none; stroke: rgba(90,196,158,0.2); stroke-width: 10; }
.steps-ring-fill { fill: none; stroke: var(--green); stroke-width: 10; stroke-linecap: round; transition: stroke-dashoffset 0.6s cubic-bezier(0.16,1,0.3,1); }
.steps-ring-text { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.steps-num { font-size: 20px; font-weight: 900; color: var(--green); }
.steps-label-sm { font-size: 10px; color: var(--text-muted); font-weight: 600; }

.steps-goal-row { display: flex; align-items: center; justify-content: space-between; font-size: 12.5px; color: var(--text-muted); margin: 8px 0; }
.steps-input-row { display: flex; gap: 8px; }
.steps-input-row input {
    flex: 1; padding: 10px 12px; border: 1.5px solid var(--border); border-radius: var(--radius-sm);
    font-size: 14px; font-weight: 600; background: white; color: var(--text); font-family: inherit;
}
.steps-input-row input:focus { outline: none; border-color: var(--green); }
.st-btn {
    padding: 10px 16px; background: var(--green); color: white; border: none;
    border-radius: var(--radius-sm); font-size: 13px; font-weight: 700;
    cursor: pointer; font-family: inherit; transition: all 0.2s;
}
.st-btn:hover { transform: translateY(-1px); }

/* ── Calories Card ── */
.calories-card { background: linear-gradient(135deg, var(--amber-soft) 0%, #fce8c0 100%); border: 1px solid rgba(232,168,87,0.2); }
.cal-macros { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 12px 0; }
.macro-item { text-align: center; background: rgba(255,255,255,0.7); border-radius: var(--radius-sm); padding: 12px 8px; }
.macro-val { font-size: 20px; font-weight: 900; }
.macro-lbl { font-size: 10px; letter-spacing: 1px; text-transform: uppercase; color: var(--text-muted); font-weight: 600; margin-top: 2px; }
.macro-val.carbs   { color: var(--amber); }
.macro-val.protein { color: var(--blue); }
.macro-val.fat     { color: var(--pink); }

.cal-input-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.cal-field input, .cal-field select {
    width: 100%; padding: 9px 10px; border: 1.5px solid var(--border); border-radius: var(--radius-sm);
    font-size: 13px; font-weight: 600; background: white; color: var(--text); font-family: inherit;
}
.cal-field input:focus, .cal-field select:focus { outline: none; border-color: var(--amber); }
.cal-field label { font-size: 10px; text-transform: uppercase; letter-spacing: 1px; color: var(--text-muted); font-weight: 700; display: block; margin-bottom: 4px; }

/* ── Mood & Energy Card ── */
.mood-card { background: linear-gradient(135deg, var(--pink-soft) 0%, #f0c8d8 100%); border: 1px solid rgba(228,123,168,0.2); }
.mood-row { display: flex; justify-content: center; gap: 12px; margin: 14px 0; }
.mood-btn {
    font-size: 28px; cursor: pointer; border: none; background: none;
    border-radius: 50%; width: 50px; height: 50px;
    display: flex; align-items: center; justify-content: center;
    transition: transform 0.2s, background 0.2s;
}
.mood-btn:hover { transform: scale(1.2); background: rgba(255,255,255,0.5); }
.mood-btn.selected { background: rgba(255,255,255,0.8); transform: scale(1.15); box-shadow: var(--shadow-sm); }

.energy-row { margin-top: 10px; }
.energy-label { font-size: 11px; font-weight: 700; color: var(--text-muted); letter-spacing: 1px; text-transform: uppercase; margin-bottom: 8px; }
.energy-slider {
    width: 100%; accent-color: var(--pink);
    appearance: none; height: 6px; border-radius: 99px; cursor: pointer;
}

/* ── Weight Chart ── */
.weight-card {
    background: var(--surface); border-radius: var(--radius); padding: 20px;
    box-shadow: var(--shadow-md); border: 1px solid var(--border);
}
.weight-display { display: flex; align-items: baseline; gap: 8px; margin: 10px 0; }
.weight-current { font-size: 50px; font-weight: 900; color: var(--teal); letter-spacing: -1.5px; }
.weight-unit { font-size: 18px; font-weight: 600; color: var(--text-muted); }
.weight-change { font-size: 13px; font-weight: 700; padding: 3px 10px; border-radius: 40px; }
.wc-pos { background: var(--green-soft); color: var(--green); }
.wc-neg { background: var(--pink-soft); color: var(--pink); }
.wc-neu { background: var(--surface2); color: var(--text-muted); }

.weight-input-row { display: flex; gap: 8px; margin-top: 14px; }
.weight-input-row input {
    flex: 1; padding: 10px 14px; border: 1.5px solid var(--border);
    border-radius: var(--radius-sm); font-size: 15px; font-weight: 700;
    background: var(--surface2); color: var(--text); font-family: inherit;
}
.weight-input-row input:focus { outline: none; border-color: var(--teal); background: white; }
.wt-btn {
    padding: 10px 20px; background: linear-gradient(135deg, var(--teal), #1a9898);
    color: white; border: none; border-radius: var(--radius-sm);
    font-size: 13px; font-weight: 700; cursor: pointer; font-family: inherit;
    transition: all 0.2s;
}
.wt-btn:hover { transform: translateY(-1px); box-shadow: 0 4px 14px rgba(41,184,184,0.35); }

/* Weight history bars */
.weight-history { margin-top: 16px; }
.wh-title { font-size: 10.5px; letter-spacing: 2px; text-transform: uppercase; color: var(--text-muted); font-weight: 700; margin-bottom: 10px; }
.weight-bars { display: flex; align-items: flex-end; gap: 6px; height: 80px; }
.weight-bar-wrap { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 4px; height: 100%; justify-content: flex-end; }
.weight-bar { width: 100%; border-radius: 4px 4px 0 0; background: linear-gradient(180deg, var(--teal), #1a9898); transition: height 0.5s cubic-bezier(0.16,1,0.3,1); min-height: 4px; }
.weight-bar-label { font-size: 9px; color: var(--text-muted); font-weight: 600; }

/* ── Stats Summary ── */
.stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.stat-box {
    background: var(--surface); border-radius: var(--radius-sm); padding: 16px;
    box-shadow: var(--shadow-sm); border: 1px solid var(--border); text-align: center;
}
.stat-box-val { font-size: 28px; font-weight: 900; letter-spacing: -0.5px; }
.stat-box-lbl { font-size: 10px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--text-muted); font-weight: 700; margin-top: 4px; }

/* ── Health Log ── */
.health-log { background: var(--surface); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow-md); border: 1px solid var(--border); }
.log-item {
    display: flex; align-items: center; gap: 12px; padding: 10px 0;
    border-bottom: 1px solid var(--border);
}
.log-item:last-child { border-bottom: none; }
.log-icon { font-size: 20px; }
.log-info { flex: 1; }
.log-title { font-size: 13px; font-weight: 700; }
.log-meta { font-size: 11px; color: var(--text-muted); margin-top: 2px; }
.log-val { font-size: 14px; font-weight: 800; color: var(--teal); }

/* ── Responsive ── */
@media (max-width: 1200px) { 
    .dashboard { grid-template-columns: 1fr; } 
}

@media (max-width: 768px) {
    * { -webkit-tap-highlight-color: transparent; }
    body { padding: 12px; }
    .main-title { font-size: clamp(24px, 6vw, 32px); line-height: 1.2; }
    .header-info { margin-bottom: 20px; }
    .controls { gap: 10px; padding: 0; }
    .select-box, .primary-btn, .download-btn { 
        min-height: 48px; 
        font-size: 14px; 
        padding: 12px 18px; 
        flex: 1;
        justify-content: center;
        display: inline-flex;
        align-items: center;
    }
    .download-buttons { display: grid; grid-template-columns: 1fr 1fr; width: 100%; gap: 8px; }
    .bmi-inputs { grid-template-columns: 1fr; gap: 12px; }
    .cal-input-grid { grid-template-columns: 1fr; gap: 12px; }
    .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
    .stat-box { padding: 20px 10px; }
    .metric-card { padding: 20px 16px; }
    .water-btns { gap: 12px; }
    .w-btn, .s-log-btn, .st-btn, .wt-btn { min-height: 48px; }
    .weight-input-row { flex-direction: column; gap: 12px; }
    .weight-input-row button { width: 100%; }
    .mood-row { flex-wrap: wrap; gap: 12px; }
    .mood-btn { width: 48px; height: 48px; font-size: 32px; }
    
    .weight-bars { height: 60px; }
}

@media (max-width: 480px) {
    .main-title { font-size: 22px; }
    .stats-grid { grid-template-columns: 1fr; }
    .cal-macros { grid-template-columns: 1fr; }
}