/* DevArise - Responsive Layout & Breakpoints */

/* Mobile Drawer Overlay (Public & Student Shell) */
.mobile-drawer-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    z-index: var(--z-drawer);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
}

.mobile-drawer-backdrop.active {
    opacity: 1;
    pointer-events: auto;
}

.mobile-drawer {
    position: fixed;
    top: 0;
    right: 0;
    width: min(85vw, 320px);
    height: 100vh;
    height: 100dvh;
    background: var(--surface);
    border-left: 1px solid var(--line);
    z-index: calc(var(--z-drawer) + 1);
    padding: 20px;
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    overflow-y: auto;
}

.mobile-drawer.active {
    transform: translateX(0);
}

.drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--line);
}

.drawer-header .brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-navy);
}

.drawer-close {
    background: var(--surface-2);
    border: 1px solid var(--line);
    width: 36px;
    height: 36px;
    min-height: 36px;
    min-width: 36px;
    max-width: 36px;
    max-height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text-navy);
    cursor: pointer;
    border-radius: 50%;
    transition: background 0.15s ease, color 0.15s ease;
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

.drawer-close:hover {
    background: var(--surface);
    color: var(--accent-blue);
}

.drawer-close svg {
    width: 18px;
    height: 18px;
    display: block;
    margin: auto;
    stroke: currentColor;
    stroke-width: 2.2;
    stroke-linecap: round;
    stroke-linejoin: round;
    pointer-events: none;
}

.drawer-nav {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.drawer-nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-navy);
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    transition: background 0.15s ease;
    display: flex;
    align-items: center;
    gap: 10px;
}

.drawer-nav-link:hover, .drawer-nav-link.active {
    background: var(--surface-2);
    color: var(--accent-blue);
    font-weight: 600;
}

.drawer-actions {
    margin-top: auto;
    padding-top: 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    border-top: 1px solid var(--line);
}

.drawer-actions .btn {
    padding: 10px 14px;
    font-size: 0.9rem;
}

/* Breakpoint: <= 1024px */
@media (max-width: 1024px) {
    .desktop-nav,
    .desktop-only-btn,
    .header-actions {
        display: none !important;
    }

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

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

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

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

    .event-detail-grid {
        grid-template-columns: 1fr;
    }

    .registration-card {
        position: static;
    }

    .account-layout {
        grid-template-columns: 1fr;
    }

    .admin-layout {
        grid-template-columns: 1fr;
    }

    .admin-sidebar {
        border-right: none;
        border-bottom: 1px solid var(--line);
        flex-direction: row;
        flex-wrap: wrap;
        padding: 12px 16px;
        gap: 8px;
        background: #ffffff;
    }

    .admin-nav-item {
        padding: 8px 14px;
        font-size: 0.875rem;
        min-height: 44px;
        border-radius: var(--radius-sm);
        white-space: nowrap;
    }

    .admin-nav-item.nav-back {
        margin-top: 0;
        border-top: none;
        padding-top: 8px;
    }

    .admin-main {
        padding: 24px 16px;
    }

    .admin-stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
    }

    .form-grid-2, .form-grid-3 {
        grid-template-columns: 1fr;
        gap: 14px;
    }
}

/* Breakpoint: <= 820px — Tablet intermediate */
@media (max-width: 820px) {
    .philosophy-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .proof-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
    }
}


/* Breakpoint: <= 768px */
@media (max-width: 768px) {

    .home-cta-section .btn {
        padding: 8px 18px !important;
        min-height: 40px !important;
        font-size: 0.85rem !important;
    }

    .proof-grid {
        grid-template-columns: 1fr;
        gap: 14px;
    }

    .event-card {
        flex-direction: column;
        align-items: stretch;
        padding: 16px;
        gap: 14px;
        border-radius: var(--radius);
    }

    .event-card-img-wrap {
        width: 100% !important;
        height: 160px !important;
        border-radius: var(--radius-sm);
    }

    .event-card-title {
        font-size: 1.15rem;
        line-height: 1.35;
        margin-bottom: 8px;
        font-weight: 700;
    }

    .event-card-meta {
        gap: 6px;
        margin-bottom: 8px;
        flex-wrap: wrap;
    }

    .badge {
        font-size: 0.7rem;
        padding: 3px 8px;
        white-space: nowrap !important;
        word-break: keep-all !important;
    }

    .tag {
        font-size: 0.75rem;
        padding: 2px 8px;
        white-space: nowrap !important;
        word-break: keep-all !important;
    }

    .event-card-details {
        font-size: 0.8rem;
        gap: 12px;
        margin-bottom: 10px;
        flex-wrap: wrap;
    }

    .event-card-desc {
        font-size: 0.875rem;
        line-height: 1.5;
        margin-bottom: 12px;
    }

    .event-card-foot,
    .event-card-foot-stacked {
        font-size: 0.8rem;
        gap: 12px;
        flex-direction: column;
        align-items: stretch;
    }

    .event-hosting-meta {
        display: flex;
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        gap: 8px;
        width: 100%;
    }

    .event-host {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        width: auto;
        max-width: 50%;
        font-size: 0.74rem;
        white-space: nowrap;
        justify-content: flex-start;
    }

    .event-author {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        width: auto;
        max-width: 50%;
        font-size: 0.74rem;
        white-space: nowrap;
        margin-left: auto;
        justify-content: flex-end;
        text-align: right;
    }

    .event-card-foot .btn {
        width: 100%;
        text-align: center;
        justify-content: center;
    }

    .admin-toolbar {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }

    .admin-search-box {
        width: 100%;
    }

    /* Convert Admin Tables to Responsive Mobile Cards (UI-22) */
    .admin-table-wrap {
        display: none;
    }

    .admin-cards-mobile {
        display: flex;
        flex-direction: column;
        gap: 14px;
    }

    .admin-row-card {
        background: var(--surface);
        border: 1px solid var(--line);
        border-radius: var(--radius);
        padding: 16px;
        box-shadow: var(--shadow-xs);
    }

    .admin-row-card-head {
        display: flex;
        justify-content: space-between;
        align-items: flex-start;
        margin-bottom: 10px;
        gap: 10px;
    }

    .admin-row-card-body {
        font-size: 0.875rem;
        display: flex;
        flex-direction: column;
        gap: 6px;
        margin-bottom: 14px;
    }
}

/* Breakpoint: <= 640px — Large Mobile / Small Tablet */
@media (max-width: 640px) {
    .domain-grid, .gallery-grid, .philosophy-grid, .team-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .section-header .btn {
        align-self: flex-start;
    }

    .home-philosophy-title {
        font-size: 1.35rem;
    }

    .home-cta-title {
        font-size: 1.35rem;
    }
}

/* Breakpoint: <= 480px / 375px / 320px */
@media (max-width: 480px) {
    .container {
        width: calc(100% - 24px);
    }

    .header-inner {
        gap: 8px;
    }

    .brand-logo {
        max-width: 165px;
        height: 38px;
    }

    .hero h1 {
        font-size: 2rem;
        line-height: 1.25;
        margin-bottom: 16px;
        font-weight: 400;
        letter-spacing: -0.02em;
    }

    .hero h1 strong {
        font-size: 1.5rem;
        margin-top: 6px;
        font-weight: 400;
        color: var(--accent-mint-text);
        display: block;
    }

    .hero-sub {
        font-size: 0.925rem;
        line-height: 1.55;
        margin-bottom: 0;
        padding: 0;
        max-width: 100%;
    }

    .page-hero {
        padding: 28px 0 20px;
        margin-bottom: 20px;
    }

    .page-hero-title {
        font-size: 1.4rem;
        margin-bottom: 6px;
    }

    .page-hero-desc {
        font-size: 0.9rem;
        line-height: 1.5;
    }

    .section {
        padding: 32px 0;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
        margin-bottom: 20px;
    }

    .section-title-wrap h2 {
        font-size: 1.35rem;
        font-weight: 700;
        margin-bottom: 4px;
    }

    .section-title-wrap p {
        font-size: 0.875rem;
        margin-bottom: 4px;
    }

    .event-list-vertical {
        margin-top: 12px;
        gap: 16px;
    }

    .floating-search {
        flex-direction: column;
        padding: 14px;
        gap: 10px;
    }

    .search-input {
        width: 100%;
        font-size: 0.9rem;
    }

    .floating-search .btn {
        width: 100%;
    }

    .domain-grid, .team-grid, .gallery-grid, .philosophy-grid {
        grid-template-columns: 1fr;
    }

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

    .footer-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    .footer-copy {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
    }

    .auth-card {
        padding: 20px 14px;
    }

    .site-footer {
        padding: 32px 0 20px;
        margin-top: 40px;
    }

    .catalogue-filter-bar {
        padding: 10px;
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }

    .catalogue-search-box {
        width: 100%;
        flex: 0 0 auto;
        height: 44px;
    }

    .catalogue-filter-group {
        width: 100%;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }

    .catalogue-filter-group .filter-select {
        width: 100%;
        font-size: 0.85rem;
    }

    .catalogue-filter-group #clear-filters-btn {
        grid-column: span 2;
        width: 100%;
    }
}

/* Wide screens: expand admin stats to 4 columns */
@media (min-width: 1200px) {
    .admin-stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Breakpoint: <= 360px — Ultra-compact screens */
@media (max-width: 360px) {
    .container {
        width: calc(100% - 16px);
    }

    .hero h1 {
        font-size: 1.65rem;
    }

    .hero h1 strong {
        font-size: 1.25rem;
    }

    .btn {
        padding: 6px 12px;
        font-size: 0.8rem;
    }

    .proof-number {
        font-size: 2rem;
    }
}