/* ============================================================================
   ZOLDEA LAYOUT — Page Structure & Responsive Grid
   ============================================================================ */

/* --------------------------------------------------------------------------
   App Container — Full Viewport Grid
   -------------------------------------------------------------------------- */
.app {
    display: grid;
    grid-template-columns: 260px 1fr;
    height: 100vh;
    overflow: hidden;
    transition: grid-template-columns 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.app.sidebar-collapsed {
    grid-template-columns: 72px 1fr;
}

/* --------------------------------------------------------------------------
   Sidebar
   -------------------------------------------------------------------------- */
.sidebar {
    background: var(--glass-bg-heavy);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-right: var(--glass-border);
    display: flex;
    flex-direction: column;
    padding: var(--space-4) 0;
    overflow-y: auto;
    overflow-x: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: var(--z-sticky);
}

.sidebar__logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-6);
    margin-bottom: var(--space-3);
    text-decoration: none;
    white-space: nowrap;
    overflow: hidden;
}

.sidebar__logo-icon {
    width: 36px;
    height: 36px;
    min-width: 36px;
    background: #ffffff;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xl);
    font-weight: 800;
    color: var(--accent-blue);
    box-shadow: 0 2px 8px hsla(0, 0%, 100%, 0.15);
}

.sidebar__logo-text {
    font-size: var(--text-xl);
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

.sidebar-collapsed .sidebar__logo-text {
    display: none;
}

/* Navigation */
.sidebar__nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    padding: 0 var(--space-3);
}

.sidebar__section-label {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    padding: var(--space-3) var(--space-3) var(--space-1);
    white-space: nowrap;
    overflow: hidden;
}

.sidebar-collapsed .sidebar__section-label {
    text-align: center;
    font-size: 0;
    padding: var(--space-2) 0;
}

.sidebar-collapsed .sidebar__section-label::after {
    content: '—';
    font-size: var(--text-xs);
    color: var(--text-muted);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    overflow: hidden;
    border: 1px solid transparent;
    position: relative;
    min-height: 36px;
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--bg-card);
    border-color: var(--border-subtle);
}

.nav-link.active {
    color: var(--accent-blue);
    background: hsla(217, 91%, 60%, 0.1);
    border-color: hsla(217, 91%, 60%, 0.2);
}

.nav-link.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 60%;
    background: var(--accent-blue);
    border-radius: 0 var(--radius-full) var(--radius-full) 0;
}

.nav-link__icon {
    min-width: 18px;
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.nav-link__icon svg {
    width: 18px;
    height: 18px;
}

.nav-link__text {
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-collapsed .nav-link__text {
    display: none;
}

.sidebar-collapsed .nav-link {
    justify-content: center;
    padding: var(--space-3);
}

/* Sidebar Collapse Toggle */
.sidebar__toggle {
    margin: var(--space-2) var(--space-3);
    padding: var(--space-2);
    border-radius: var(--radius-md);
    background: transparent;
    border: 1px solid var(--border-subtle);
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.sidebar__toggle:hover {
    color: var(--text-primary);
    background: var(--bg-card);
}

.sidebar__toggle svg {
    transition: transform 0.3s ease;
}

.sidebar-collapsed .sidebar__toggle svg {
    transform: rotate(180deg);
}

/* --------------------------------------------------------------------------
   Main Content Area
   -------------------------------------------------------------------------- */
.main-content {
    overflow-y: auto;
    overflow-x: hidden;
    padding: 0;
    display: flex;
    flex-direction: column;
}

/* --------------------------------------------------------------------------
   Top Bar
   -------------------------------------------------------------------------- */
.top-bar {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-6);
    background: var(--glass-bg-heavy);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: var(--glass-border);
    min-height: 56px;
}

.top-bar__left {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex: 1;
    max-width: 480px;
}

.top-bar__right {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

/* --------------------------------------------------------------------------
   KPI Row
   -------------------------------------------------------------------------- */
.kpi-row {
    display: flex;
    gap: var(--space-4);
    padding: var(--space-6);
    padding-bottom: var(--space-3);
    overflow-x: auto;
    scrollbar-width: thin;
    flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   Dashboard Content
   -------------------------------------------------------------------------- */
.dashboard-content {
    flex: 1;
    padding: var(--space-3) var(--space-6) var(--space-6);
}

/* Section Header */
.section-header {
    margin-bottom: var(--space-6);
}

.section-header h1 {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: var(--text-sm);
    color: var(--text-muted);
    margin-top: var(--space-1);
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(400px, 100%), 1fr));
    gap: var(--space-5);
}

/* Hero cards span full width */
.card--hero {
    grid-column: 1 / -1;
}

/* Insights panel */
.card--insights {
    grid-column: 1 / -1;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.dashboard-footer {
    padding: var(--space-8) var(--space-6) var(--space-6);
    text-align: center;
    color: var(--text-muted);
    font-size: var(--text-xs);
    flex-shrink: 0;
}

.dashboard-footer p + p {
    margin-top: var(--space-1);
}

/* --------------------------------------------------------------------------
   Status Indicator
   -------------------------------------------------------------------------- */
.status-indicator {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-xs);
    color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */

/* Tablet */
@media (max-width: 1024px) {
    .dashboard-grid {
        grid-template-columns: repeat(auto-fit, minmax(min(320px, 100%), 1fr));
    }
}

/* Mobile */
@media (max-width: 768px) {
    .app {
        display: block; /* Remove grid to allow fixed positioning of children */
    }

    .main-content {
        padding-top: 56px; /* Space for top-bar */
        padding-bottom: calc(80px + env(safe-area-inset-bottom)); /* Space for bottom nav */
        height: 100vh;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .top-bar {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: var(--z-sticky);
        padding: var(--space-3) var(--space-4);
        padding-top: calc(var(--space-3) + env(safe-area-inset-top));
    }

    .sidebar {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        height: calc(64px + env(safe-area-inset-bottom));
        flex-direction: row;
        border-right: none;
        border-top: var(--glass-border);
        padding: 0 var(--space-2) env(safe-area-inset-bottom) var(--space-2);
        overflow-x: auto;
        overflow-y: hidden;
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
        z-index: var(--z-sticky);
        background: var(--glass-bg-heavy);
        backdrop-filter: var(--glass-blur);
        -webkit-backdrop-filter: var(--glass-blur);
    }

    /* Hide scrollbar for native app feel */
    .sidebar::-webkit-scrollbar,
    .kpi-row::-webkit-scrollbar,
    .main-content::-webkit-scrollbar {
        display: none;
    }
    .sidebar, .kpi-row, .main-content {
        -ms-overflow-style: none;  /* IE and Edge */
        scrollbar-width: none;  /* Firefox */
    }

    .sidebar__logo,
    .sidebar__section-label,
    .sidebar__toggle,
    .nav-link__text {
        display: none;
    }

    .sidebar__nav {
        flex-direction: row;
        gap: var(--space-1);
        padding: 0;
        height: 64px;
        align-items: center;
    }

    .nav-link {
        justify-content: center;
        padding: 0 var(--space-3);
        height: 48px;
        min-width: 64px;
        scroll-snap-align: center;
        flex-shrink: 0;
        border-radius: var(--radius-full);
    }

    .nav-link.active {
        background: hsla(217, 91%, 60%, 0.15);
    }

    .nav-link.active::before {
        display: none; /* Remove side border indicator on mobile */
    }

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

    .dashboard-content {
        padding: 0 0 var(--space-4) 0; /* Full bleed container */
    }

    .dashboard-grid {
        grid-template-columns: 1fr;
        gap: var(--space-4); /* Add gap back between stacked full-bleed cards */
    }

    .section-header {
        padding: 0 var(--space-4); /* Maintain padding for headers so they don't hit the edge */
    }

    .section-header h1 {
        font-size: var(--text-xl);
    }

    .sidebar-toggle {
        display: none;
    }
}