/* ═══════════════════════════════════════════════════════
   LAYOUT — Navbar, Sidebar, Footer, Page Containers
   ═══════════════════════════════════════════════════════ */

/* ─── Navbar ─── */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--navbar-height);
    background: rgba(10, 14, 23, 0.85);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-primary);
    z-index: var(--z-navbar);
    display: flex;
    align-items: center;
    padding: 0 var(--space-6);
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: rgba(10, 14, 23, 0.95);
    box-shadow: var(--shadow-lg);
}

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

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
    color: var(--text-primary);
}

.navbar-logo {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    background: var(--gradient-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-size: var(--text-base);
    color: white;
}

.navbar-title {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--text-primary);
}

.navbar-title span {
    color: var(--accent-gold);
}

.navbar-links {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.navbar-link {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: pointer;
    text-decoration: none;
    font-weight: 500;
}

.navbar-link:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.navbar-link.active {
    color: var(--accent-blue);
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.navbar-menu-btn {
    display: none;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 24px;
}

/* Mobile nav */
.mobile-nav {
    position: fixed;
    top: var(--navbar-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-secondary);
    z-index: var(--z-sticky);
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    transform: translateX(100%);
    transition: transform var(--transition-base);
}

.mobile-nav.open {
    transform: translateX(0);
}

.mobile-nav .navbar-link {
    font-size: var(--text-lg);
    padding: var(--space-4) var(--space-4);
    border-radius: var(--radius-lg);
}

@media (max-width: 768px) {
    .navbar-links {
        display: none;
    }

    .navbar-actions .btn {
        display: none;
    }

    .navbar-menu-btn {
        display: flex;
    }
}

/* ─── Sidebar (Admin) ─── */
.admin-layout {
    display: flex;
    min-height: calc(100vh - var(--navbar-height));
}

.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-primary);
    padding: var(--space-6) 0;
    flex-shrink: 0;
    position: sticky;
    top: var(--navbar-height);
    height: calc(100vh - var(--navbar-height));
    overflow-y: auto;
    z-index: var(--z-sticky);
}

.sidebar-section {
    padding: 0 var(--space-4);
    margin-bottom: var(--space-6);
}

.sidebar-section-title {
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0 var(--space-4);
    margin-bottom: var(--space-2);
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
    cursor: pointer;
    text-decoration: none;
}

.sidebar-link:hover {
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-primary);
}

.sidebar-link.active {
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent-blue);
}

.sidebar-link-icon {
    width: 20px;
    text-align: center;
    flex-shrink: 0;
}

.sidebar-badge {
    margin-left: auto;
    background: var(--accent-red);
    color: white;
    font-size: var(--text-xs);
    font-weight: 700;
    padding: 1px 8px;
    border-radius: var(--radius-full);
}

.admin-content {
    flex: 1;
    padding: var(--space-8);
    min-width: 0;
}

@media (max-width: 1024px) {
    .sidebar {
        position: fixed;
        left: 0;
        top: var(--navbar-height);
        transform: translateX(-100%);
        transition: transform var(--transition-base);
        z-index: var(--z-dropdown);
    }

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

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

/* ─── Footer ─── */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-primary);
    padding: var(--space-12) 0 var(--space-8);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}

.footer-brand-desc {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    margin-top: var(--space-3);
    line-height: var(--leading-relax);
}

.footer-col-title {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-4);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.footer-link {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    transition: color var(--transition-fast);
    cursor: pointer;
    text-decoration: none;
}

.footer-link:hover {
    color: var(--text-primary);
}

.footer-bottom {
    border-top: 1px solid var(--border-primary);
    padding-top: var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: var(--text-sm);
    color: var(--text-muted);
}

.footer-social {
    display: flex;
    gap: var(--space-3);
}

.footer-social-link {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    transition: all var(--transition-fast);
    font-size: 16px;
    text-decoration: none;
}

.footer-social-link:hover {
    background: var(--accent-blue);
    color: white;
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-6);
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--space-4);
        text-align: center;
    }
}

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

/* ─── Page Layouts ─── */
.page-header {
    padding: var(--space-12) 0 var(--space-8);
}

.page-header h1 {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-3);
}

.page-header p {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    max-width: 600px;
}

/* Auth layout */
.auth-layout {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - var(--navbar-height));
    padding: var(--space-8) var(--space-4);
}

.auth-card {
    width: 100%;
    max-width: 440px;
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-2xl);
    padding: var(--space-10);
    backdrop-filter: blur(16px);
}

.auth-title {
    font-size: var(--text-2xl);
    font-weight: 800;
    text-align: center;
    margin-bottom: var(--space-2);
}

.auth-subtitle {
    text-align: center;
    color: var(--text-tertiary);
    font-size: var(--text-sm);
    margin-bottom: var(--space-8);
}

.auth-footer {
    text-align: center;
    margin-top: var(--space-6);
    font-size: var(--text-sm);
    color: var(--text-tertiary);
}

.auth-footer a {
    color: var(--accent-blue);
    font-weight: 500;
    cursor: pointer;
}

/* Dashboard layout for user */
.dash-layout {
    max-width: var(--container-xl);
    margin: 0 auto;
    padding: var(--space-8) var(--space-6);
}

.dash-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-5);
    margin-bottom: var(--space-8);
}

.page-section {
    margin-bottom: var(--space-10);
}

.page-section-title {
    font-size: var(--text-xl);
    font-weight: 700;
    margin-bottom: var(--space-5);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

/* Grid layouts */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-5);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-5);
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-5);
}

@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {

    .grid-4,
    .grid-3,
    .grid-2 {
        grid-template-columns: 1fr;
    }

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