/* === Bonk - Apple HIG === */

:root {
    --bg: #F2F2F7;
    --bg-card: #FFFFFF;
    --bg-list: #FFFFFF;
    --separator: #E5E5EA;
    --text: #000000;
    --text-secondary: #8E8E93;
    --text-tertiary: #C7C7CC;
    --accent: #FF3B30;
    --accent-dim: rgba(255, 59, 48, 0.1);
    --green: #34C759;
    --gold: #D4A017;
    --silver: #8E8E93;
    --bronze: #CD7F32;
    --shadow: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.06);
    --radius-sm: 10px;
    --radius-md: 14px;
    --radius-lg: 20px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #000000;
        --bg-card: #1C1C1E;
        --bg-list: #1C1C1E;
        --separator: #38383A;
        --text: #FFFFFF;
        --text-secondary: #8E8E93;
        --text-tertiary: #48484A;
        --accent: #FF453A;
        --accent-dim: rgba(255, 69, 58, 0.15);
        --green: #30D158;
        --gold: #E5B83C;
        --silver: #8E8E93;
        --bronze: #D4905C;
        --shadow: 0 1px 3px rgba(0,0,0,0.3);
    }
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
                 "Helvetica Neue", "PingFang SC", sans-serif;
    background: var(--bg);
    color: var(--text);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    min-height: 100dvh;
}

.app {
    max-width: 480px;
    margin: 0 auto;
    padding: 0 16px 40px;
}

.header {
    padding: 48px 0 8px;
}

.headline {
    font-size: 34px;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.1;
    color: var(--text);
}

.caption {
    font-size: 15px;
    color: var(--text-secondary);
    margin-top: 4px;
    letter-spacing: -0.01em;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin: 24px 0;
}

.stat-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 16px 12px 14px;
    text-align: center;
    box-shadow: var(--shadow);
}

.stat-value {
    display: block;
    font-size: 34px;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1;
    color: var(--accent);
}

.stat-value.pulse {
    animation: stat-flash 2s ease-in-out infinite;
}

@keyframes stat-flash {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

.stat-label {
    display: block;
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 6px;
    letter-spacing: -0.01em;
}

.segmented-control {
    display: flex;
    background: var(--separator);
    border-radius: 8px;
    padding: 2px;
    margin-bottom: 16px;
}

.segment {
    flex: 1;
    padding: 7px 0;
    font-size: 14px;
    font-weight: 500;
    text-align: center;
    border: none;
    border-radius: 7px;
    background: transparent;
    color: var(--text);
    cursor: pointer;
    letter-spacing: -0.01em;
    user-select: none;
    -webkit-user-select: none;
    -webkit-tap-highlight-color: transparent;
    transition: background 0.2s, box-shadow 0.2s, transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
    transform: scale(1);
}

.segment:active {
    transform: scale(0.94);
    transition: transform 0.1s ease-out;
}

.segment.active {
    background: var(--bg-card);
    box-shadow: 0 1px 3px rgba(0,0,0,0.08), 0 0 0 0.5px rgba(0,0,0,0.04);
    transform: scale(1);
}

.list {
    background: var(--bg-list);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.list-placeholder {
    padding: 48px 16px;
    text-align: center;
    color: var(--text-tertiary);
    font-size: 15px;
}

.list-row {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 0.5px solid var(--separator);
    transition: background 0.25s;
}

.list-row:last-child {
    border-bottom: none;
}

.list-row.highlight {
    animation: row-flash 1.2s ease-out;
}

@keyframes row-flash {
    0% { background: var(--accent-dim); }
    100% { background: transparent; }
}

.row-rank {
    width: 32px;
    font-size: 17px;
    font-weight: 600;
    text-align: center;
    color: var(--text-secondary);
    letter-spacing: -0.01em;
    flex-shrink: 0;
}

.row-rank.top { color: var(--gold); font-weight: 700; }
.row-rank.second { color: var(--silver); font-weight: 700; }
.row-rank.third { color: var(--bronze); font-weight: 700; }

.row-info {
    flex: 1;
    min-width: 0;
    padding: 0 12px;
}

.row-name {
    font-size: 17px;
    font-weight: 400;
    letter-spacing: -0.01em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.row-level {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 1px;
}

.row-change {
    width: 20px;
    text-align: center;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-tertiary);
    flex-shrink: 0;
}

.row-change.up { color: var(--green); }
.row-change.down { color: var(--accent); }

.row-value {
    min-width: 36px;
    text-align: right;
    flex-shrink: 0;
}

.row-value .count {
    font-size: 20px;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--accent);
}

.row-value .unit {
    display: block;
    font-size: 11px;
    color: var(--text-secondary);
    text-align: right;
}

.status-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 24px 0 8px;
    font-size: 13px;
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 4px;
    background: var(--text-tertiary);
    transition: background 0.3s;
}

.status-dot.on { background: var(--green); }
.status-dot.off { background: var(--accent); }