*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg: #0a0a0f;
    --bg-card: rgba(255,255,255,0.03);
    --bg-card-hover: rgba(255,255,255,0.05);
    --border: rgba(255,255,255,0.06);
    --border-hover: rgba(255,255,255,0.1);
    --text: #e2e8f0;
    --text-dim: #636e80;
    --text-muted: #4a5568;
    --text-bright: #f8fafc;
    --green: #10b981;
    --yellow: #f59e0b;
    --red: #ef4444;
    --blue: #3b82f6;
    --purple: #8b5cf6;
    --teal: #14b8a6;
    --primary: var(--green);
    --glow: rgba(16,185,129,0.3);
    --bg-accent: rgba(16,185,129,0.08);
    --card-radius: 16px;
    --card-padding: 20px;
}

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Remove old animated background gradient */
body::before { display: none; }

/* Scrollbar styling */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.08); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.14); }

/* ── Top Nav ── */
.top-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    background: rgba(10,10,15,0.8);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid rgba(255,255,255,0.04);
}

.nav-back {
    color: var(--text-dim);
    text-decoration: none;
    font-size: 0.82rem;
    font-weight: 500;
    cursor: pointer;
    transition: color 0.2s;
    display: flex;
    align-items: center;
    gap: 4px;
    min-width: 60px;
}

.nav-back:hover { color: var(--text-bright); }

.nav-date {
    display: flex;
    align-items: center;
    gap: 14px;
    font-family: 'Inter', sans-serif;
    font-size: 0.85rem;
    color: var(--text-bright);
    font-weight: 600;
    letter-spacing: 0.01em;
}

.nav-arrow {
    cursor: pointer;
    color: var(--text-dim);
    font-size: 1rem;
    padding: 6px 10px;
    border-radius: 8px;
    transition: all 0.2s;
    user-select: none;
    -webkit-user-select: none;
}

.nav-arrow:hover { color: var(--text-bright); background: rgba(255,255,255,0.04); }
.nav-arrow.disabled { opacity: 0.15; pointer-events: none; }

.nav-menu {
    min-width: 60px;
    text-align: right;
    font-size: 1.2rem;
    cursor: pointer;
    color: var(--text-dim);
}

/* ── Container ── */
.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 16px 60px;
}

/* ── Hero ── */
.hero {
    text-align: center;
    padding: 32px 0 28px;
    position: relative;
}

.hero-date-label {
    font-size: 0.75rem;
    color: var(--text-dim);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 24px;
    font-weight: 500;
}

/* ── Charge Status ── */
.charge-status {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    margin-bottom: 28px;
}

.charge-emoji {
    font-size: 2.4rem;
    filter: drop-shadow(0 0 16px var(--glow));
    animation: chargePulse 3s ease-in-out infinite;
}

@keyframes chargePulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.08); }
}

.charge-label {
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    text-shadow: 0 0 30px var(--glow);
}

/* ── Position Bars ── */
.position-bars {
    display: flex;
    flex-direction: column;
    gap: 22px;
    max-width: 420px;
    margin: 0 auto 28px;
    width: 100%;
}

.position-bar-container {
    position: relative;
}

.position-bar-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 10px;
}

.position-bar-label {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-dim);
}

.position-bar-value {
    font-family: 'Inter', sans-serif;
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.position-bar-unit {
    font-size: 0.65rem;
    font-weight: 500;
    color: var(--text-dim);
    margin-left: 3px;
}

.position-bar-track {
    position: relative;
    height: 10px;
    background: rgba(255,255,255,0.04);
    border-radius: 5px;
    overflow: visible;
}

.position-bar-normal {
    position: absolute;
    top: 0;
    height: 100%;
    background: rgba(16, 185, 129, 0.12);
    border-radius: 5px;
    box-shadow: 0 0 16px rgba(16, 185, 129, 0.06), inset 0 0 10px rgba(16, 185, 129, 0.04);
}

.position-bar-dot {
    position: absolute;
    top: 50%;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    z-index: 2;
    animation: dotPulse 2.5s ease-in-out infinite;
}

@keyframes dotPulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); }
    50% { transform: translate(-50%, -50%) scale(1.15); }
}

.position-bar-scale {
    display: flex;
    justify-content: space-between;
    margin-top: 6px;
    font-size: 0.58rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.position-bar-scale-normal {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.position-bar-zone {
    text-align: center;
    font-size: 0.68rem;
    font-weight: 600;
    margin-top: 5px;
    letter-spacing: 0.04em;
}

/* ── Hero Assessment Card ── */
.hero-assessment {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--card-radius);
    padding: var(--card-padding);
    margin-top: 20px;
    text-align: left;
}

.hero-recommendation {
    font-size: 1.05rem;
    color: var(--text-bright);
    font-weight: 500;
    max-width: 380px;
    margin: 0 auto;
    font-style: italic;
    opacity: 0.9;
}

/* ── Metrics Grid ── */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-bottom: 12px;
}

@media (min-width: 640px) {
    .metrics-grid { grid-template-columns: repeat(4, 1fr); }
}

.metric-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 18px 14px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    text-align: center;
    transition: all 0.3s ease;
}

.metric-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-2px);
}

.metric-icon { font-size: 1.4rem; margin-bottom: 6px; }

.metric-value {
    font-family: 'Inter', sans-serif;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-bright);
    line-height: 1.1;
}

.metric-unit {
    font-size: 0.65rem;
    color: var(--text-dim);
    font-weight: 400;
}

.metric-label {
    font-size: 0.65rem;
    color: var(--text-dim);
    margin-top: 3px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.metric-sub {
    font-size: 0.65rem;
    color: var(--text-dim);
    margin-top: 5px;
    font-family: 'Inter', sans-serif;
}

/* ── Stories Row (Sleep metrics) ── */
.stories-row {
    display: flex;
    gap: 10px;
    margin-bottom: 14px;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.stories-row::-webkit-scrollbar { display: none; }

.story-card {
    flex: 1;
    min-width: 0;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.07);
    border-radius: 14px;
    padding: 16px 14px;
    text-align: center;
    transition: all 0.2s ease;
}

.story-card:hover {
    background: rgba(255,255,255,0.06);
    border-color: rgba(255,255,255,0.1);
}

.story-label {
    font-size: 0.65rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 6px;
    font-weight: 500;
}

.story-value {
    font-family: 'Inter', sans-serif;
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--text-bright);
    letter-spacing: -0.02em;
    line-height: 1.1;
}

.story-unit {
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--text-dim);
}

/* ── Cards ── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--card-radius);
    padding: var(--card-padding);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: all 0.3s ease;
    margin-bottom: 14px;
}

.card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
}

.card-title {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-dim);
    margin-bottom: 14px;
    font-weight: 600;
}

.section-title {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-dim);
    margin: 28px 0 10px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* ── Charts ── */
.chart-container {
    position: relative;
    height: 260px;
    width: 100%;
}

@media (max-width: 480px) {
    .chart-container { height: 200px; }
}

/* ── Sleep Detail (supporting numbers below stories) ── */
.sleep-detail {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-bottom: 18px;
}

@media (max-width: 380px) {
    .sleep-detail { grid-template-columns: repeat(2, 1fr); }
}

.sleep-stat {
    text-align: center;
    padding: 10px 6px;
    background: rgba(255,255,255,0.02);
    border-radius: 10px;
}

.sleep-stat-value {
    font-family: 'Inter', sans-serif;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-bright);
}

.sleep-stat-label {
    font-size: 0.6rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 2px;
}

/* ── Trend Assessment ── */
.trend-card {
    display: flex;
    gap: 14px;
    align-items: flex-start;
}

.trend-icon { font-size: 1.8rem; flex-shrink: 0; }

.trend-name {
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 4px;
}

.trend-desc {
    color: var(--text-dim);
    font-size: 0.85rem;
    line-height: 1.6;
}

/* ── Insights ── */
.insight-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    padding: 14px 0;
    border-bottom: 1px solid rgba(255,255,255,0.04);
}

.insight-item:last-child { border-bottom: none; }

.insight-num {
    flex-shrink: 0;
    width: 24px; height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255,255,255,0.04);
    color: var(--text-dim);
    font-size: 0.7rem;
    font-weight: 700;
    font-family: 'Inter', sans-serif;
}

.insight-item p {
    color: var(--text);
    font-size: 0.85rem;
    line-height: 1.55;
}

/* ── Glucose Placeholder ── */
.glucose-placeholder {
    text-align: center;
    padding: 28px 16px;
    color: var(--text-dim);
}

.glucose-placeholder .icon { font-size: 2.2rem; margin-bottom: 10px; opacity: 0.4; }
.glucose-placeholder h3 { color: var(--text); font-size: 0.95rem; margin-bottom: 6px; font-weight: 600; }
.glucose-placeholder p { font-size: 0.8rem; max-width: 320px; margin: 0 auto; color: var(--text-dim); }

.glucose-metrics {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-top: 16px;
    opacity: 0.25;
}

.glucose-metric { text-align: center; }
.glucose-metric .val { font-family: 'Inter', sans-serif; font-size: 1rem; color: var(--text-dim); }
.glucose-metric .lbl { font-size: 0.6rem; text-transform: uppercase; letter-spacing: 0.05em; }

/* ── Footer ── */
.footer {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
    font-size: 0.68rem;
    letter-spacing: 0.04em;
}

/* ── Date List View ── */
.date-list {
    padding: 16px 0;
}

.date-list-header {
    text-align: center;
    padding: 24px 0;
    font-size: 0.75rem;
    color: var(--text-dim);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    font-weight: 500;
}

.date-row {
    display: flex;
    align-items: center;
    padding: 14px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 14px;
    cursor: pointer;
    transition: all 0.2s;
    margin-bottom: 8px;
    gap: 12px;
}

.date-row:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
}

.date-row-color {
    font-size: 1.2rem;
    flex-shrink: 0;
}

.date-row-info {
    flex: 1;
    min-width: 0;
}

.date-row-date {
    font-weight: 600;
    color: var(--text-bright);
    font-size: 0.9rem;
}

.date-row-charge {
    font-size: 0.7rem;
    color: var(--text-dim);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-top: 2px;
}

.date-row-stats {
    display: flex;
    gap: 4px;
    font-family: 'Inter', sans-serif;
    font-size: 0.7rem;
    color: var(--text-dim);
    flex-shrink: 0;
}

.date-row-stat span {
    color: var(--text);
    font-weight: 600;
}

/* ── Chart short container ── */
.chart-container-short {
    height: 160px;
}

@media (max-width: 480px) {
    .chart-container-short { height: 140px; }
}

/* ── Animations ── */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-in {
    animation: fadeInUp 0.4s ease-out forwards;
    opacity: 0;
}

.delay-1 { animation-delay: 0.05s; }
.delay-2 { animation-delay: 0.1s; }
.delay-3 { animation-delay: 0.15s; }
.delay-4 { animation-delay: 0.2s; }
.delay-5 { animation-delay: 0.25s; }

/* ── Loading ── */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    flex-direction: column;
    gap: 16px;
}

.loading-spinner {
    width: 36px; height: 36px;
    border: 2px solid rgba(255,255,255,0.06);
    border-top-color: var(--green);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.loading-text {
    font-size: 0.8rem;
    color: var(--text-dim);
}

/* ── Pull to refresh ── */
.ptr-indicator {
    position: fixed;
    top: 0; left: 50%;
    transform: translateX(-50%) translateY(-60px);
    width: 36px; height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.04);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    transition: transform 0.2s;
    z-index: 200;
}

/* ── Blank landing ── */
.landing {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 80vh;
    color: var(--text-dim);
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.02em;
}

/* ── Swipe transition ── */
.report-view {
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.report-view.swipe-out-left {
    opacity: 0;
    transform: translateX(-30px);
}

.report-view.swipe-out-right {
    opacity: 0;
    transform: translateX(30px);
}

/* ── View Tabs ── */
.view-tabs {
    display: flex;
    gap: 8px;
    padding: 12px 16px 0;
    max-width: 600px;
    margin: 0 auto;
}

.view-tab {
    flex: 1;
    padding: 10px 12px;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 10px;
    background: rgba(255,255,255,0.03);
    color: #64748b;
    font-size: 0.82rem;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    -webkit-tap-highlight-color: transparent;
}

.view-tab:hover {
    background: rgba(255,255,255,0.06);
    color: #94a3b8;
}

.view-tab.active {
    background: rgba(16,185,129,0.1);
    border-color: rgba(16,185,129,0.3);
    color: #10b981;
}

/* ── Responsive tweaks ── */
@media (max-width: 480px) {
    .story-card { padding: 14px 10px; }
    .story-value { font-size: 1.2rem; }
    .hero { padding: 24px 0 20px; }
    .container { padding: 0 12px 60px; }
}