/* ============================================================
   Layout — Sidebar + Content + Bento Grid
   ============================================================ */

/* --- App Shell --- */
.app {
    display: flex;
    min-height: 100vh;
}

/* --- Sidebar --- */
.sidebar {
    width: var(--sidebar-width);
    background: var(--color-surface);
    border-right: 1px solid var(--color-border-light);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 100;
    transition: width var(--transition-normal), transform var(--transition-normal);
    overflow: hidden;
}

.sidebar-header {
    padding: 20px 20px 16px;
    border-bottom: 1px solid var(--color-border-light);
    display: flex;
    align-items: center;
    gap: 12px;
    min-height: 64px;
}

.sidebar-logo {
    font-size: 22px;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, var(--color-blue), var(--color-violet));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    white-space: nowrap;
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 12px 10px;
}

.nav-section {
    margin-bottom: 8px;
}

.nav-section-title {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-muted);
    padding: 12px 12px 6px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    user-select: none;
    text-decoration: none;
    white-space: nowrap;
}

.nav-item:hover {
    background: var(--color-surface-hover);
    color: var(--color-text);
    text-decoration: none;
}

.nav-item.active {
    background: var(--color-blue);
    color: #fff;
}

.nav-item.active:hover {
    background: var(--color-blue);
    opacity: 0.9;
}

.nav-icon {
    font-size: 18px;
    width: 24px;
    text-align: center;
    flex-shrink: 0;
}

.nav-label {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
}

.nav-badge {
    font-size: 11px;
    font-weight: 700;
    background: var(--color-red);
    color: #fff;
    padding: 2px 7px;
    border-radius: 10px;
    min-width: 20px;
    text-align: center;
}

/* Sidebar footer */
.sidebar-footer {
    padding: 12px 10px;
    border-top: 1px solid var(--color-border-light);
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.sidebar-user:hover {
    background: var(--color-surface-hover);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-blue), var(--color-violet));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    flex-shrink: 0;
}

.user-info {
    overflow: hidden;
}

.user-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-role {
    font-size: 11px;
    color: var(--color-muted);
}

/* --- Main Content --- */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    transition: margin-left var(--transition-normal);
}

.page-header {
    padding: 24px 32px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.page-header h1 {
    font-size: 28px;
    font-weight: 800;
}

.page-header-actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

.page-content {
    padding: 24px 32px 48px;
}

/* --- Bento Grid --- */
.bento-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.bento-tile {
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    padding: 24px;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    opacity: 0;
    animation: slideInUp 0.5s ease forwards;
    position: relative;
    overflow: hidden;
}

.bento-tile:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Tile sizes */
.bento-2x1 { grid-column: span 2; }
.bento-3x1 { grid-column: span 3; }
.bento-4x1 { grid-column: span 4; }
.bento-2x2 { grid-column: span 2; grid-row: span 2; }
.bento-1x2 { grid-row: span 2; }

/* Tile accent colors */
.bento-tile[data-accent="blue"] { border-top: 3px solid var(--color-blue); }
.bento-tile[data-accent="green"] { border-top: 3px solid var(--color-green); }
.bento-tile[data-accent="red"] { border-top: 3px solid var(--color-red); }
.bento-tile[data-accent="orange"] { border-top: 3px solid var(--color-orange); }
.bento-tile[data-accent="violet"] { border-top: 3px solid var(--color-violet); }
.bento-tile[data-accent="teal"] { border-top: 3px solid var(--color-teal); }

.bento-tile-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.bento-tile-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.bento-tile-icon {
    font-size: 20px;
}

.bento-tile-value {
    font-size: 36px;
    font-weight: 800;
    letter-spacing: -1px;
    color: var(--color-text);
    line-height: 1;
}

.bento-tile-subtitle {
    font-size: 13px;
    color: var(--color-text-secondary);
    margin-top: 6px;
}

.bento-tile-trend {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: 8px;
}

.bento-tile-trend.up {
    color: var(--color-green);
    background: rgba(52, 199, 89, 0.12);
}

.bento-tile-trend.down {
    color: var(--color-red);
    background: rgba(255, 45, 85, 0.12);
}

/* --- Responsive --- */
@media (max-width: 1200px) {
    .bento-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .bento-3x1 { grid-column: span 3; }
    .bento-4x1 { grid-column: span 3; }
}

@media (max-width: 900px) {
    .bento-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .bento-3x1, .bento-4x1 { grid-column: span 2; }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        width: 280px;
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .page-header {
        padding: 12px 16px 0;
    }

    .page-header h1 {
        font-size: 22px;
    }

    .page-content {
        padding: 12px 16px 32px;
    }

    .bento-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .bento-2x1, .bento-3x1, .bento-4x1, .bento-2x2 {
        grid-column: span 1;
    }

    .bento-tile {
        padding: 18px;
        border-radius: 16px;
    }

    .bento-tile-value {
        font-size: 28px;
    }

    .kpi-big {
        font-size: 32px;
    }

    .mobile-menu-btn {
        display: flex !important;
    }

    /* Stack composer on mobile */
    .composer {
        grid-template-columns: 1fr !important;
    }

    .composer-preview {
        position: static !important;
    }

    /* Tables horizontal scroll */
    .table-wrap {
        margin: 0 -16px;
        padding: 0 16px;
        border-radius: 0;
    }

    /* Tabs wrap on mobile */
    .tabs {
        flex-wrap: wrap;
    }

    .tab {
        min-width: auto;
        padding: 6px 12px;
        font-size: 13px;
    }

    /* Modals full width mobile */
    .modal {
        max-width: 100%;
        width: 100%;
        border-radius: 16px 16px 0 0;
        margin-top: auto;
        max-height: 90vh;
    }

    /* Settings grid stack */
    .settings-grid {
        grid-template-columns: 1fr !important;
    }

    /* Cards smaller padding */
    .card {
        padding: 18px;
    }

    /* Search bar full width */
    .search-bar {
        max-width: 100% !important;
    }

    .contacts-toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    /* Flex gaps smaller */
    .flex.gap-3 { gap: 12px; }
    .flex.gap-2 { gap: 8px; }

    /* Hide non-essential columns on mobile */
    .table th:nth-child(n+5),
    .table td:nth-child(n+5) {
        display: none;
    }
}

/* Small mobile (iPhone SE etc) */
@media (max-width: 375px) {
    .page-content {
        padding: 10px 12px 24px;
    }

    .bento-tile {
        padding: 14px;
    }

    .bento-tile-value {
        font-size: 24px;
    }

    h3 {
        font-size: 18px;
    }

    .btn {
        padding: 8px 14px;
        font-size: 13px;
    }
}

/* Mobile menu button */
.mobile-menu-btn {
    display: none;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    border: 1.5px solid var(--color-border);
    background: var(--color-surface);
    cursor: pointer;
    font-size: 20px;
}

/* Overlay for mobile sidebar */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 99;
    backdrop-filter: blur(4px);
}

.sidebar-overlay.visible {
    display: block;
}