/* ===================== RESET & BASE ===================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-bg: #f8f9fb;
    --color-white: #ffffff;
    --color-text: #1a1a2e;
    --color-text-light: #6b7280;
    --color-border: #e5e7eb;
    --color-accent: #6366f1;
    --color-accent-light: #eef2ff;
    --color-green: #10b981;
    --color-red: #ef4444;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --radius: 12px;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

body {
    font-family: var(--font);
    background: var(--color-bg);
    color: var(--color-text);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

/* ===================== APP LAYOUT ===================== */
.app {
    max-width: 1100px;
    margin: 0 auto;
    padding: 32px 24px;
}

/* ===================== HEADER ===================== */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 28px;
    flex-wrap: wrap;
    gap: 16px;
}

.header__title {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.header__controls {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* ===================== FILTER BUTTONS ===================== */
.filter-group {
    display: flex;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
}

.filter-btn {
    padding: 8px 14px;
    font-size: 13px;
    font-weight: 500;
    font-family: var(--font);
    border: none;
    background: transparent;
    color: var(--color-text-light);
    cursor: pointer;
    transition: all 0.15s ease;
}

.filter-btn:hover {
    color: var(--color-text);
    background: var(--color-bg);
}

.filter-btn--active {
    background: var(--color-accent);
    color: white;
}

.filter-btn--active:hover {
    background: var(--color-accent);
    color: white;
}

/* ===================== KPI CARDS ===================== */
.kpis {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.kpi-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 20px 24px;
    box-shadow: var(--shadow);
}

.kpi-card__label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-light);
    margin-bottom: 4px;
}

.kpi-card__value {
    display: block;
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.kpi-card__trend {
    display: inline-block;
    margin-top: 4px;
    font-size: 13px;
    font-weight: 600;
}

.kpi-card__trend--up {
    color: var(--color-green);
}

.kpi-card__trend--down {
    color: var(--color-red);
}

/* ===================== CARDS ===================== */
.card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    margin-bottom: 24px;
}

.card__title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
}

.card__subtitle {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-top: 20px;
    margin-bottom: 10px;
}

.card__subtitle:first-of-type {
    margin-top: 0;
}

/* ===================== CHART ===================== */
.chart-container {
    position: relative;
    height: 280px;
}

/* ===================== TOP LINKS ===================== */
.top-links__item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--color-border);
}

.top-links__item:last-child {
    border-bottom: none;
}

.top-links__name {
    font-size: 14px;
    font-weight: 500;
}

.top-links__stats {
    display: flex;
    align-items: center;
    gap: 12px;
}

.top-links__count {
    font-size: 14px;
    font-weight: 600;
}

.top-links__pct {
    font-size: 12px;
    color: var(--color-text-light);
    min-width: 40px;
    text-align: right;
}

.top-links__bar-wrap {
    width: 80px;
    height: 6px;
    background: var(--color-bg);
    border-radius: 3px;
    overflow: hidden;
}

.top-links__bar {
    height: 100%;
    background: var(--color-accent);
    border-radius: 3px;
    transition: width 0.3s ease;
}

/* ===================== STAT LIST ===================== */
.stat-list__item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 0;
}

.stat-list__label {
    font-size: 14px;
}

.stat-list__value {
    font-size: 14px;
    font-weight: 600;
}

/* ===================== BOTTOM ROW ===================== */
.bottom-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.bottom-row .card {
    margin-bottom: 0;
}

/* ===================== MISC ===================== */
.placeholder {
    color: var(--color-text-light);
    font-size: 14px;
}

/* ===================== RESPONSIVE ===================== */
@media (max-width: 768px) {
    .kpis {
        grid-template-columns: 1fr;
    }

    .bottom-row {
        grid-template-columns: 1fr;
    }

    .header {
        flex-direction: column;
        align-items: flex-start;
    }
}