/* ============================================
   BREF Dashboard - Layout Styles
   ============================================ */

/* === Main Layout === */
.app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* === Header === */
.header {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    padding: 0 var(--space-6);
}

.header__inner {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
}

.header__brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-shrink: 0;
}

.header__title {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--color-text-primary);
}

.header__subtitle {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* === Navigation === */
.nav {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.nav__link {
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.nav__link:hover,
.nav__link.active {
    color: var(--color-text-primary);
    background: var(--color-bg-tertiary);
}

.nav__link.active {
    color: var(--color-accent-primary);
}

/* === Search Bar === */
.search {
    position: relative;
    flex: 1;
    max-width: 400px;
}

.search__input {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    padding-left: var(--space-10);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    color: var(--color-text-primary);
    font-size: var(--text-sm);
    transition: all var(--transition-fast);
}

.search__input::placeholder {
    color: var(--color-text-muted);
}

.search__input:focus {
    border-color: var(--color-accent-primary);
    box-shadow: var(--shadow-glow);
}

.search__icon {
    position: absolute;
    left: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    pointer-events: none;
}

/* === Main Content === */
.main {
    flex: 1;
    padding: var(--space-6);
}

.main__inner {
    max-width: var(--container-max);
    margin: 0 auto;
}

/* === Dashboard Grid === */
.dashboard-grid {
    display: grid;
    gap: var(--space-6);
}

/* KPI Cards Row */
.kpi-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-4);
}

/* Charts + Map Row */
.charts-map-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
}

/* Charts Grid */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
}

/* Full Width Sections */
.full-width {
    grid-column: 1 / -1;
}

/* === Section Headers === */
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-4);
}

.section-title {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.section-title__icon {
    color: var(--color-accent-primary);
}

/* === Responsive Layout === */
@media (max-width: 1200px) {
    .charts-map-row {
        grid-template-columns: 1fr;
    }

    .kpi-row {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header {
        height: auto;
        padding: var(--space-3) var(--space-4);
    }

    .header__inner {
        flex-wrap: wrap;
        gap: var(--space-2);
    }

    .header__brand {
        flex: 1;
    }

    .header__title {
        font-size: var(--text-lg);
    }

    .header__subtitle {
        display: none;
    }

    .search {
        order: 3;
        max-width: 100%;
        width: 100%;
        margin-top: var(--space-2);
    }

    .nav {
        display: none;
    }

    .kpi-row {
        grid-template-columns: repeat(2, 1fr);
    }

    .charts-grid {
        grid-template-columns: 1fr;
    }

    .main {
        padding: var(--space-4);
    }

    .filters-panel__grid {
        grid-template-columns: 1fr !important;
    }
}

@media (max-width: 480px) {
    .kpi-row {
        grid-template-columns: 1fr;
    }

    .header__title {
        font-size: var(--text-base);
    }
}

/* === Footer === */
.footer {
    padding: var(--space-6);
    border-top: 1px solid var(--color-border);
    text-align: center;
    color: var(--color-text-muted);
    font-size: var(--text-sm);
}

.footer a {
    color: var(--color-text-secondary);
}

.footer a:hover {
    color: var(--color-accent-primary);
}