/* ============================================
   Responsive Styles
   ============================================ */

/* Tablet - 992px */
@media (max-width: 992px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .hero-text p {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-visual {
        order: -1;
    }

    .hero-card {
        max-width: 320px;
    }

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

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }

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

    .profile-card {
        max-width: 480px;
        margin: 0 auto;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }

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

    .admin-sidebar {
        transform: translateX(-100%);
    }

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

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

    .admin-sidebar-toggle {
        display: flex !important;
    }
}

/* Mobile - 768px */
@media (max-width: 768px) {
    :root {
        --header-height: 64px;
    }

    /* Mobile Navigation - Side drawer */
    .nav-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        z-index: 999;
        pointer-events: none;
    }

    .nav-menu.open {
        pointer-events: auto;
    }

    .nav-overlay {
        display: block;
        position: absolute;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        opacity: 0;
        transition: opacity var(--transition);
    }

    .nav-menu.open .nav-overlay {
        opacity: 1;
    }

    .nav-list {
        position: absolute;
        top: 0;
        left: 0;
        width: 280px;
        max-width: 85%;
        height: 100%;
        background: var(--bg-white);
        flex-direction: column;
        align-items: stretch;
        padding: 72px 0 24px;
        gap: 0;
        box-shadow: var(--shadow-lg);
        transform: translateX(-100%);
        transition: transform var(--transition);
        overflow-y: auto;
        overflow-x: hidden;
    }

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

    .nav-item {
        width: 100%;
        border-bottom: 1px solid var(--border-light);
    }

    .nav-item:last-child {
        border-bottom: none;
    }

    .nav-link {
        padding: 14px 20px;
        border-radius: 0;
        font-size: 0.95rem;
        width: 100%;
        box-sizing: border-box;
    }

    .nav-auth {
        margin: 12px 16px 0;
        border-bottom: none !important;
        width: auto;
    }

    .nav-auth + .nav-auth {
        margin-top: 8px;
    }

    .nav-auth .btn {
        width: 100%;
        max-width: 100%;
        justify-content: center;
        box-sizing: border-box;
        white-space: nowrap;
    }

    .has-dropdown {
        border-bottom: 1px solid var(--border-light);
    }

    .has-dropdown .dropdown-menu {
        border-top: 1px solid var(--border-light);
    }

    .dropdown-menu a {
        border-bottom: 1px solid var(--border-light);
    }

    .dropdown-menu li:last-child a {
        border-bottom: none;
    }

    /* Dropdown on mobile */
    .has-dropdown .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding: 0 0 0 20px;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        background: var(--bg);
        border-radius: 0;
        min-width: auto;
    }

    .has-dropdown.open .dropdown-menu {
        max-height: 300px;
    }

    .has-dropdown.open .dropdown-arrow {
        transform: rotate(180deg);
    }

    .dropdown-menu a {
        padding: 12px 16px;
    }

    /* Hero */
    .hero {
        padding: 50px 0 60px;
    }

    .hero-text h1 {
        font-size: 1.9rem;
    }

    .hero-text p {
        font-size: 1rem;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-actions .btn {
        width: 100%;
    }

    /* Features */
    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .section {
        padding: 50px 0;
    }

    .section-header h2 {
        font-size: 1.6rem;
    }

    /* Stats */
    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
    }

    .stat-item h3 {
        font-size: 1.8rem;
    }

    /* Auth */
    .auth-card {
        padding: 28px 20px;
        margin: 0 10px;
    }

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

    /* Dashboard */
    .welcome-banner {
        flex-direction: column;
        text-align: center;
        padding: 24px;
    }

    .dashboard-cards {
        grid-template-columns: 1fr;
    }

    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
        text-align: center;
    }

    .footer-logo {
        justify-content: center;
    }

    .footer-social {
        justify-content: center;
    }

    .footer-contact li {
        justify-content: center;
    }

    /* Flash */
    .flash-container {
        left: 12px;
        right: 12px;
        max-width: none;
    }

    /* Admin */
    .admin-stats {
        grid-template-columns: 1fr;
    }

    .admin-content {
        padding: 16px;
    }

    .admin-topbar {
        padding: 0 16px;
    }

    .admin-card-header {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
    }

    .admin-table th,
    .admin-table td {
        padding: 10px 12px;
        font-size: 0.85rem;
    }
}

/* Small mobile - 480px */
@media (max-width: 480px) {
    .hero-text h1 {
        font-size: 1.6rem;
    }

    .hero-card {
        padding: 28px 20px;
    }

    .hero-card-icon {
        width: 80px;
        height: 80px;
        font-size: 2.2rem;
    }

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

    .auth-card-header h1 {
        font-size: 1.35rem;
    }

    .btn-lg {
        padding: 12px 24px;
        font-size: 1rem;
    }

    .about-hero h1 {
        font-size: 1.7rem;
    }
}

/* Admin sidebar toggle button (hidden on desktop) */
.admin-sidebar-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.3rem;
    color: var(--text);
    cursor: pointer;
    padding: 8px;
    margin-right: 12px;
}

/* Sidebar overlay for mobile admin */
.admin-sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99;
}

.admin-sidebar-overlay.active {
    display: block;
}