/* =========================================================
   DESIGNVERSE
   responsive.css
   Mobile → Tablet → Laptop → Desktop
   ========================================================= */


/* =========================================================
   1. GLOBAL RESPONSIVE SAFETY
   ========================================================= */

html {
    overflow-x: hidden;
}

body {
    min-width: 320px;
    overflow-x: hidden;
}

img,
video,
svg,
canvas {
    max-width: 100%;
}

button,
input,
textarea,
select {
    max-width: 100%;
}


/* =========================================================
   2. MOBILE BASE
   320px — 575px
   ========================================================= */

@media (max-width: 575px) {

    /* ---------- Typography ---------- */

    h1 {
        font-size: clamp(32px, 9vw, 46px);
        line-height: 1.05;
    }

    h2 {
        font-size: clamp(26px, 7vw, 36px);
    }

    h3 {
        font-size: 20px;
    }

    p {
        font-size: 13px;
    }


    /* ---------- Container ---------- */

    .container {
        width: 100%;

        padding-left: 18px;
        padding-right: 18px;
    }


    /* ---------- Navigation ---------- */

    .desktop-only {
        display: none !important;
    }

    .mobile-only {
        display: block !important;
    }

    .mobile-nav-toggle {
        display: grid !important;
    }

    .nav-links {
        position: fixed;

        top: 70px;
        left: 14px;
        right: 14px;

        display: none;

        flex-direction: column;

        padding: 12px;

        border: 1px solid var(--border);

        border-radius: 18px;

        background:
            rgba(10, 10, 16, 0.96);

        box-shadow:
            0 25px 70px rgba(0, 0, 0, 0.5);

        backdrop-filter: blur(24px);
        -webkit-backdrop-filter: blur(24px);

        z-index: 1000;
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links a {
        width: 100%;

        padding: 12px;

        border-radius: 10px;
    }


    /* ---------- Hero ---------- */

    .hero {
        min-height: auto;

        padding-top: 90px;
        padding-bottom: 70px;

        text-align: center;
    }

    .hero-content {
        width: 100%;

        margin-inline: auto;
    }

    .hero-title {
        font-size: clamp(36px, 11vw, 52px);
    }

    .hero-description {
        max-width: 100%;

        margin-inline: auto;

        font-size: 13px;

        line-height: 1.7;
    }

    .hero-actions {
        width: 100%;

        display: flex;

        flex-direction: column;

        gap: 10px;
    }

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

    .hero-visual {
        margin-top: 35px;
    }


    /* ---------- Buttons ---------- */

    .btn {
        min-height: 46px;

        padding-left: 16px;
        padding-right: 16px;
    }

    .btn-lg {
        width: 100%;
    }


    /* ---------- Sections ---------- */

    section {
        padding-top: 60px;
        padding-bottom: 60px;
    }

    .section-header {
        margin-bottom: 28px;
    }

    .section-header-row {
        flex-direction: column;

        align-items: flex-start;

        gap: 15px;
    }


    /* ---------- Grids ---------- */

    .grid,
    .design-grid,
    .challenge-grid,
    .designer-grid,
    .stats-grid {
        grid-template-columns: 1fr !important;
    }

    .two-column,
    .two-col,
    .content-grid {
        grid-template-columns: 1fr !important;
    }


    /* ---------- Cards ---------- */

    .design-item,
    .challenge-card,
    .stat-card {
        width: 100%;
    }

    .design-item-image {
        aspect-ratio: 4 / 3;
    }


    /* ---------- Tabs ---------- */

    .tabs {
        width: 100%;

        overflow-x: auto;

        justify-content: flex-start;

        scrollbar-width: none;
    }

    .tabs::-webkit-scrollbar {
        display: none;
    }

    .tab {
        flex-shrink: 0;
    }


    /* ---------- Search ---------- */

    .search-box {
        width: 100%;
    }


    /* ---------- Forms ---------- */

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

    .form-actions {
        flex-direction: column;
    }

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


    /* ---------- Upload ---------- */

    .dropzone {
        min-height: 190px;

        padding: 22px 16px;
    }


    /* ---------- Modal ---------- */

    .modal {
        padding: 12px;
    }

    .modal-content {
        width: 100%;

        max-height: calc(100vh - 24px);

        padding: 20px;

        border-radius: 18px;
    }

    .modal-footer {
        flex-direction: column;
    }

    .modal-footer .btn {
        width: 100%;
    }


    /* ---------- Toast ---------- */

    .toast-container {
        right: 12px;
        bottom: 12px;

        width: calc(100% - 24px);
    }


    /* ---------- Pagination ---------- */

    .pagination {
        gap: 4px;
    }

    .page-button {
        width: 34px;
        height: 34px;
    }


    /* ---------- Avatar ---------- */

    .avatar-xl {
        width: 76px;
        height: 76px;
    }


    /* ---------- Profile ---------- */

    .profile-header {
        flex-direction: column;

        align-items: center;

        text-align: center;
    }

    .profile-actions {
        width: 100%;

        display: flex;

        flex-direction: column;
    }

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


    /* ---------- Dashboard ---------- */

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

    .dashboard-sidebar {
        position: static;

        width: 100%;
    }

    .dashboard-main {
        width: 100%;
    }


    /* ---------- Sidebar ---------- */

    .sidebar {
        position: fixed;

        top: 0;
        left: 0;
        bottom: 0;

        width: min(85vw, 320px);

        transform: translateX(-105%);

        transition:
            transform 300ms ease;

        z-index: 1500;
    }

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


    /* ---------- Leaderboard ---------- */

    .leaderboard-row {
        grid-template-columns:
            40px
            1fr
            auto;
    }

    .leaderboard-extra {
        display: none;
    }


    /* ---------- Challenge ---------- */

    .challenge-header {
        flex-direction: column;

        align-items: flex-start;
    }

    .challenge-actions {
        width: 100%;

        display: flex;

        flex-direction: column;
    }

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


    /* ---------- Notification ---------- */

    .notification-item {
        padding: 12px 8px;
    }


    /* ---------- Footer ---------- */

    .footer-grid {
        grid-template-columns: 1fr !important;

        gap: 30px;
    }

    .footer-bottom {
        flex-direction: column;

        align-items: flex-start;

        gap: 10px;
    }
}


/* =========================================================
   3. LARGE PHONES
   576px — 767px
   ========================================================= */

@media (min-width: 576px) and (max-width: 767px) {

    .container {
        width: 100%;

        padding-left: 24px;
        padding-right: 24px;
    }

    .nav-links {
        gap: 6px;
    }

    .hero {
        padding-top: 100px;
    }

    .hero-title {
        font-size: clamp(42px, 8vw, 60px);
    }

    .hero-actions {
        flex-direction: row;

        justify-content: center;
    }

    .hero-actions .btn {
        width: auto;
    }

    .design-grid,
    .challenge-grid {
        grid-template-columns:
            repeat(2, minmax(0, 1fr)) !important;
    }

    .stats-grid {
        grid-template-columns:
            repeat(2, minmax(0, 1fr)) !important;
    }

    .footer-grid {
        grid-template-columns:
            repeat(2, minmax(0, 1fr)) !important;
    }
}


/* =========================================================
   4. TABLETS
   768px — 991px
   ========================================================= */

@media (min-width: 768px) and (max-width: 991px) {

    .container {
        width: min(100% - 48px, 920px);

        margin-inline: auto;
    }


    /* ---------- Navigation ---------- */

    .mobile-only,
    .mobile-nav-toggle {
        display: none !important;
    }

    .nav-links {
        display: flex !important;

        align-items: center;

        gap: 5px;
    }


    /* ---------- Hero ---------- */

    .hero {
        min-height: 700px;

        display: flex;

        align-items: center;
    }

    .hero-title {
        font-size: clamp(48px, 7vw, 68px);
    }


    /* ---------- Grids ---------- */

    .design-grid,
    .challenge-grid {
        grid-template-columns:
            repeat(2, minmax(0, 1fr)) !important;
    }

    .stats-grid {
        grid-template-columns:
            repeat(2, minmax(0, 1fr)) !important;
    }

    .two-column,
    .two-col,
    .content-grid {
        grid-template-columns:
            repeat(2, minmax(0, 1fr)) !important;
    }


    /* ---------- Dashboard ---------- */

    .dashboard-layout {
        grid-template-columns:
            210px
            minmax(0, 1fr) !important;
    }

    .dashboard-sidebar {
        display: block;
    }


    /* ---------- Profile ---------- */

    .profile-header {
        display: grid;

        grid-template-columns:
            auto
            1fr
            auto;

        align-items: center;

        gap: 20px;
    }


    /* ---------- Forms ---------- */

    .form-row {
        grid-template-columns:
            repeat(2, minmax(0, 1fr));
    }


    /* ---------- Footer ---------- */

    .footer-grid {
        grid-template-columns:
            repeat(2, minmax(0, 1fr));
    }
}


/* =========================================================
   5. SMALL LAPTOPS
   992px — 1199px
   ========================================================= */

@media (min-width: 992px) and (max-width: 1199px) {

    .container {
        width: min(100% - 56px, 1100px);

        margin-inline: auto;
    }


    /* ---------- Navigation ---------- */

    .mobile-only,
    .mobile-nav-toggle {
        display: none !important;
    }

    .nav-links {
        display: flex !important;
    }


    /* ---------- Hero ---------- */

    .hero-title {
        font-size: clamp(56px, 6vw, 76px);
    }


    /* ---------- Design Grid ---------- */

    .design-grid {
        grid-template-columns:
            repeat(3, minmax(0, 1fr)) !important;
    }

    .challenge-grid {
        grid-template-columns:
            repeat(3, minmax(0, 1fr)) !important;
    }

    .stats-grid {
        grid-template-columns:
            repeat(4, minmax(0, 1fr)) !important;
    }


    /* ---------- Dashboard ---------- */

    .dashboard-layout {
        grid-template-columns:
            230px
            minmax(0, 1fr) !important;
    }


    /* ---------- Footer ---------- */

    .footer-grid {
        grid-template-columns:
            repeat(4, minmax(0, 1fr));
    }
}


/* =========================================================
   6. DESKTOP
   1200px — 1439px
   ========================================================= */

@media (min-width: 1200px) and (max-width: 1439px) {

    .container {
        width: min(100% - 64px, 1240px);

        margin-inline: auto;
    }


    .mobile-only,
    .mobile-nav-toggle {
        display: none !important;
    }

    .nav-links {
        display: flex !important;
    }


    /* ---------- Hero ---------- */

    .hero-title {
        font-size: clamp(64px, 5vw, 82px);
    }


    /* ---------- Grids ---------- */

    .design-grid {
        grid-template-columns:
            repeat(4, minmax(0, 1fr)) !important;
    }

    .challenge-grid {
        grid-template-columns:
            repeat(3, minmax(0, 1fr)) !important;
    }


    /* ---------- Dashboard ---------- */

    .dashboard-layout {
        grid-template-columns:
            250px
            minmax(0, 1fr) !important;
    }
}


/* =========================================================
   7. LARGE DESKTOP
   1440px+
   ========================================================= */

@media (min-width: 1440px) {

    .container {
        width: min(100% - 80px, 1380px);

        margin-inline: auto;
    }


    .mobile-only,
    .mobile-nav-toggle {
        display: none !important;
    }

    .nav-links {
        display: flex !important;
    }


    /* ---------- Typography ---------- */

    .hero-title {
        font-size: clamp(72px, 5vw, 96px);
    }


    /* ---------- Grids ---------- */

    .design-grid {
        grid-template-columns:
            repeat(4, minmax(0, 1fr)) !important;
    }

    .challenge-grid {
        grid-template-columns:
            repeat(4, minmax(0, 1fr)) !important;
    }


    /* ---------- Dashboard ---------- */

    .dashboard-layout {
        grid-template-columns:
            270px
            minmax(0, 1fr) !important;
    }


    /* ---------- Hero ---------- */

    .hero {
        min-height: 820px;
    }
}


/* =========================================================
   8. EXTRA LARGE SCREENS
   1800px+
   ========================================================= */

@media (min-width: 1800px) {

    .container {
        width: min(100% - 100px, 1520px);
    }

    .hero-title {
        font-size: 100px;
    }

    .design-grid {
        grid-template-columns:
            repeat(5, minmax(0, 1fr)) !important;
    }

    .challenge-grid {
        grid-template-columns:
            repeat(4, minmax(0, 1fr)) !important;
    }
}


/* =========================================================
   9. LANDSCAPE PHONES
   ========================================================= */

@media (max-height: 500px) and (orientation: landscape) {

    .hero {
        min-height: auto;

        padding-top: 90px;
        padding-bottom: 60px;
    }

    .hero-visual {
        max-height: 300px;

        overflow: hidden;
    }

    .modal-content {
        max-height: calc(100vh - 20px);
    }
}


/* =========================================================
   10. TOUCH DEVICES
   ========================================================= */

@media (hover: none) and (pointer: coarse) {

    /* Remove hover-dependent visual behavior */

    .design-item-overlay {
        opacity: 1;
    }

    .hover-lift:hover,
    .hover-scale:hover,
    .magnetic-hover:hover {
        transform: none;
    }

    .design-item:hover,
    .challenge-card:hover {
        transform: none;
    }

    .design-item:hover .design-item-image img,
    .challenge-card:hover .challenge-card-cover img {
        transform: none;
    }

    /* Make tap targets comfortable */

    button,
    a,
    .tab,
    .icon-button,
    .page-button {
        -webkit-tap-highlight-color: transparent;
    }

    .icon-button {
        min-width: 44px;
        min-height: 44px;
    }

    .page-button {
        min-width: 42px;
        min-height: 42px;
    }
}


/* =========================================================
   11. REDUCED MOTION
   ========================================================= */

@media (prefers-reduced-motion: reduce) {

    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;

        animation-iteration-count: 1 !important;

        transition-duration: 0.01ms !important;
    }
}


/* =========================================================
   12. HIGH CONTRAST
   ========================================================= */

@media (prefers-contrast: more) {

    :root {
        --border: rgba(255, 255, 255, 0.22);

        --border-light: rgba(255, 255, 255, 0.38);
    }

    button,
    input,
    textarea,
    select {
        border-width: 2px;
    }
}


/* =========================================================
   13. VERY NARROW PHONES
   320px — 360px
   ========================================================= */

@media (max-width: 360px) {

    .container {
        padding-left: 14px;
        padding-right: 14px;
    }

    .hero {
        padding-top: 80px;
    }

    .hero-title {
        font-size: 34px;
    }

    .hero-description {
        font-size: 12px;
    }

    .btn {
        min-height: 44px;

        padding-left: 13px;
        padding-right: 13px;

        font-size: 11px;
    }

    .stat-card {
        padding: 17px;
    }

    .modal-content {
        padding: 17px;
    }
}


/* =========================================================
   14. SAFE AREA — MODERN PHONES
   ========================================================= */

@supports (padding: env(safe-area-inset-bottom)) {

    body {
        padding-bottom:
            env(safe-area-inset-bottom);
    }

    .mobile-bottom-nav {
        padding-bottom:
            calc(10px + env(safe-area-inset-bottom));
    }
}


/* =========================================================
   15. PRINT
   ========================================================= */

@media print {

    .navbar,
    .sidebar,
    .mobile-bottom-nav,
    .toast-container,
    .modal,
    .mobile-nav-toggle,
    .hero-actions {
        display: none !important;
    }

    body {
        background: white !important;

        color: black !important;
    }

    * {
        box-shadow: none !important;

        text-shadow: none !important;
    }

    a {
        color: black !important;

        text-decoration: underline;
    }
}


/* =========================================================
   END OF DESIGNVERSE RESPONSIVE SYSTEM
   ========================================================= */