/* =====================================================
   COGNO SOLUTION - Responsive Styles
   Mobile-First Responsive Design
   ===================================================== */

/* =====================================================
   BREAKPOINTS REFERENCE:
   - xs: 0-479px (small phones)
   - sm: 480-639px (large phones)
   - md: 640-767px (tablets portrait)
   - lg: 768-1023px (tablets landscape)
   - xl: 1024-1279px (laptops)
   - 2xl: 1280px+ (desktops)
   ===================================================== */

/* =====================================================
   DASHBOARD SIDEBAR RESPONSIVE
   ===================================================== */
/* Sidebar toggle is globally hidden — sidebar replaced by bottom nav */
.sidebar-toggle {
    display: none !important;
}

/* Sidebar is hidden at all breakpoints — see style.css */
.sidebar {
    display: none !important;
}

/* Main content always full width */
body.has-sidebar .main-content {
    margin-left: 0;
    width: 100%;
}

@media screen and (max-width: 768px) {
    .navbar-right {
        gap: 0.25rem;
    }

    .btn-icon {
        width: 36px;
        height: 36px;
        font-size: 1rem;
    }
}

/* =====================================================
   EXTRA SMALL DEVICES (0 - 479px)
   ===================================================== */
@media screen and (max-width: 479px) {

    /* Typography */
    html {
        font-size: 14px;
    }

    h1 {
        font-size: 1.75rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    h3 {
        font-size: 1.25rem;
    }

    h4 {
        font-size: 1.125rem;
    }

    /* Layout */
    .container {
        padding: 0 var(--spacing-md);
    }

    .main-content {
        margin-left: 0;
        padding: var(--spacing-md);
        padding-top: calc(64px + var(--spacing-md));
    }

    /* Navigation */
    .navbar,
    .topbar {
        padding: 0 var(--spacing-sm);
        /* Reduce padding on mobile */
        gap: var(--spacing-xs);
        height: 56px;
        /* Consistent height on mobile */
    }

    .navbar-left,
    .topbar-left {
        gap: var(--spacing-xs);
        flex: 1;
        min-width: 0;
        display: flex;
        align-items: center;
    }

    .topbar-title,
    .page-title {
        font-size: 1rem;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .breadcrumb {
        font-size: 0.8rem;
        /* Smaller font on small mobile */
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        max-width: 150px;
        /* Limit width to prevent pushing icons off screen */
    }

    .breadcrumb a,
    .breadcrumb span {
        display: inline-block;
    }

    .navbar-right,
    .topbar-actions,
    .topbar-right {
        gap: 0;
        flex-shrink: 0;
        display: flex;
        align-items: center;
    }

    /* Hide less critical icons on very small screens */
    #accessibility-btn,
    #dark-mode-toggle,
    .navbar-right .search-wrapper {
        display: none !important;
    }

    /* Make buttons smaller on mobile */
    .btn-icon {
        width: 32px;
        height: 32px;
        font-size: 0.9rem;
    }

    .navbar .btn-sm,
    .topbar .btn-sm {
        padding: 4px 8px;
        font-size: 0.75rem;
        height: 32px;
    }

    .user-menu-btn {
        padding: 2px;
    }

    .user-menu-btn .avatar {
        width: 32px;
        height: 32px;
    }

    .navbar-menu {
        display: none;
    }

    .navbar-brand span {
        display: none;
    }

    /* Sidebar - Full Overlay */
    .sidebar {
        display: none !important;
    }

    .main-content {
        margin-left: 0 !important;
    }

    /* Cards */
    .card-body {
        padding: var(--spacing-md);
    }

    .card-header {
        padding: var(--spacing-md);
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    /* Grids */
    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4,
    .grid-cols-5,
    .grid-cols-6 {
        grid-template-columns: 1fr;
    }

    /* Forms */
    .form-input,
    .form-textarea,
    .form-select {
        font-size: 16px;
        /* Prevents zoom on iOS */
    }

    /* Buttons */
    .btn {
        width: 100%;
        justify-content: center;
    }

    .btn-group {
        flex-direction: column;
    }

    /* Tables */
    .table th,
    .table td {
        padding: var(--spacing-sm);
        font-size: var(--font-size-sm);
    }

    /* Modals */
    .modal {
        margin: var(--spacing-md);
        max-height: calc(100vh - 32px);
    }

    .modal-header,
    .modal-body,
    .modal-footer {
        padding: var(--spacing-md);
    }

    /* Stats Cards */
    .card-stat {
        padding: var(--spacing-md);
    }

    .card-stat-icon {
        width: 48px;
        height: 48px;
        font-size: var(--font-size-xl);
    }

    .card-stat-value {
        font-size: var(--font-size-2xl);
    }

    /* Module Cards */
    .module-card {
        padding: var(--spacing-md);
    }

    .module-card-icon {
        width: 60px;
        height: 60px;
        font-size: var(--font-size-2xl);
    }

    /* Toast */
    .toast-container {
        left: var(--spacing-md);
        right: var(--spacing-md);
    }

    .toast {
        min-width: auto;
        width: 100%;
    }

    /* Tabs */
    .tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .tab {
        padding: var(--spacing-sm) var(--spacing-md);
        white-space: nowrap;
    }

    /* Hide on mobile */
    .hide-xs {
        display: none !important;
    }
}

/* =====================================================
   SMALL DEVICES (480px - 639px)
   ===================================================== */
@media screen and (min-width: 480px) and (max-width: 639px) {
    html {
        font-size: 15px;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    h3 {
        font-size: 1.5rem;
    }

    .container {
        padding: 0 var(--spacing-lg);
    }

    .main-content {
        margin-left: 0;
        padding: var(--spacing-lg);
        padding-top: calc(64px + var(--spacing-lg));
    }

    /* Sidebar hidden */
    .sidebar {
        display: none !important;
    }

    /* Grids */
    .grid-cols-3,
    .grid-cols-4,
    .grid-cols-5,
    .grid-cols-6 {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Buttons */
    .btn-group {
        flex-wrap: wrap;
    }

    .btn-group .btn {
        flex: 0 0 calc(50% - var(--spacing-xs));
    }

    /* Hide on small */
    .hide-sm {
        display: none !important;
    }
}

/* =====================================================
   MEDIUM DEVICES - Tablets Portrait (640px - 767px)
   ===================================================== */
@media screen and (min-width: 640px) and (max-width: 767px) {
    .container {
        padding: 0 var(--spacing-lg);
    }

    .main-content {
        margin-left: 0;
        padding: var(--spacing-lg);
        padding-top: calc(64px + var(--spacing-lg));
    }

    /* Sidebar hidden */
    .sidebar {
        display: none !important;
    }

    /* Grids */
    .grid-cols-4,
    .grid-cols-5,
    .grid-cols-6 {
        grid-template-columns: repeat(2, 1fr);
    }

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

    /* Navbar */
    .navbar-menu {
        gap: var(--spacing-md);
    }

    .navbar-link span {
        display: none;
    }

    /* Hide on medium */
    .hide-md {
        display: none !important;
    }
}

/* =====================================================
   LARGE DEVICES - Tablets Landscape (768px - 1023px)
   ===================================================== */
@media screen and (min-width: 768px) and (max-width: 1023px) {
    .main-content {
        margin-left: 0;
        padding: var(--spacing-xl);
    }

    /* Sidebar hidden */
    .sidebar {
        display: none !important;
    }

    /* Grids */
    .grid-cols-5,
    .grid-cols-6 {
        grid-template-columns: repeat(3, 1fr);
    }

    .grid-cols-4 {
        grid-template-columns: repeat(3, 1fr);
    }

    /* Hide on large */
    .hide-lg {
        display: none !important;
    }
}

/* =====================================================
   EXTRA LARGE DEVICES - Laptops (1024px - 1279px)
   ===================================================== */
@media screen and (min-width: 1024px) and (max-width: 1279px) {
    .main-content {
        margin-left: 0;
        padding: var(--spacing-xl);
    }

    .sidebar {
        display: none !important;
    }

    /* Grids */
    .grid-cols-5,
    .grid-cols-6 {
        grid-template-columns: repeat(4, 1fr);
    }

    /* Hide on XL */
    .hide-xl {
        display: none !important;
    }
}

/* =====================================================
   2XL DEVICES - Desktops (1280px+)
   ===================================================== */
@media screen and (min-width: 1280px) {
    .container {
        max-width: 1280px;
    }

    .main-content {
        margin-left: 0;
        padding: var(--spacing-2xl);
    }

    /* Hide on 2XL */
    .hide-2xl {
        display: none !important;
    }
}

/* =====================================================
   RESPONSIVE GRID UTILITIES
   ===================================================== */
/* Small screens and up */
@media (min-width: 480px) {
    .sm\:grid-cols-1 {
        grid-template-columns: repeat(1, 1fr);
    }

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

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

/* Medium screens and up */
@media (min-width: 640px) {
    .md\:grid-cols-1 {
        grid-template-columns: repeat(1, 1fr);
    }

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

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

    .md\:grid-cols-4 {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Large screens and up */
@media (min-width: 768px) {
    .lg\:grid-cols-1 {
        grid-template-columns: repeat(1, 1fr);
    }

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

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

    .lg\:grid-cols-4 {
        grid-template-columns: repeat(4, 1fr);
    }

    .lg\:grid-cols-5 {
        grid-template-columns: repeat(5, 1fr);
    }
}

/* XL screens and up */
@media (min-width: 1024px) {
    .xl\:grid-cols-1 {
        grid-template-columns: repeat(1, 1fr);
    }

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

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

    .xl\:grid-cols-4 {
        grid-template-columns: repeat(4, 1fr);
    }

    .xl\:grid-cols-5 {
        grid-template-columns: repeat(5, 1fr);
    }

    .xl\:grid-cols-6 {
        grid-template-columns: repeat(6, 1fr);
    }
}

/* =====================================================
   RESPONSIVE FLEX UTILITIES
   ===================================================== */
@media (max-width: 639px) {
    .flex-col-mobile {
        flex-direction: column;
    }

    .flex-wrap-mobile {
        flex-wrap: wrap;
    }
}

@media (min-width: 640px) {
    .md\:flex-row {
        flex-direction: row;
    }

    .md\:flex-col {
        flex-direction: column;
    }
}

@media (min-width: 768px) {
    .lg\:flex-row {
        flex-direction: row;
    }

    .lg\:flex-col {
        flex-direction: column;
    }
}

/* =====================================================
   RESPONSIVE TEXT UTILITIES
   ===================================================== */
@media (max-width: 639px) {
    .text-center-mobile {
        text-align: center;
    }
}

@media (min-width: 640px) {
    .md\:text-left {
        text-align: left;
    }

    .md\:text-center {
        text-align: center;
    }

    .md\:text-right {
        text-align: right;
    }
}

/* =====================================================
   RESPONSIVE SPACING UTILITIES
   ===================================================== */
@media (max-width: 479px) {
    .xs\:p-0 {
        padding: 0;
    }

    .xs\:p-sm {
        padding: var(--spacing-sm);
    }

    .xs\:p-md {
        padding: var(--spacing-md);
    }

    .xs\:mt-md {
        margin-top: var(--spacing-md);
    }

    .xs\:mb-md {
        margin-bottom: var(--spacing-md);
    }
}

@media (min-width: 480px) {
    .sm\:p-lg {
        padding: var(--spacing-lg);
    }

    .sm\:mt-lg {
        margin-top: var(--spacing-lg);
    }

    .sm\:mb-lg {
        margin-bottom: var(--spacing-lg);
    }
}

@media (min-width: 768px) {
    .lg\:p-xl {
        padding: var(--spacing-xl);
    }

    .lg\:mt-xl {
        margin-top: var(--spacing-xl);
    }

    .lg\:mb-xl {
        margin-bottom: var(--spacing-xl);
    }
}

/* =====================================================
   MOBILE NAVIGATION
   ===================================================== */
.mobile-menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    transition: background var(--transition-fast);
}

.mobile-menu-toggle:hover {
    background: var(--bg-secondary);
}

@media (max-width: 767px) {
    .mobile-menu-toggle {
        display: flex;
    }
}

.mobile-menu-icon span {
    display: block;
    width: 24px;
    height: 2px;
    background: currentColor;
    margin: 5px 0;
    transition: all var(--transition-fast);
}

.mobile-menu-toggle.active .mobile-menu-icon span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active .mobile-menu-icon span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active .mobile-menu-icon span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Sidebar Overlay */
.sidebar-overlay {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: calc(var(--z-sticky) - 1);
}

.sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
}

@media (min-width: 768px) {
    .sidebar-overlay {
        display: none;
    }
}

/* =====================================================
   RESPONSIVE DASHBOARD LAYOUT
   ===================================================== */
.dashboard-header {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

@media (min-width: 640px) {
    .dashboard-header {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
}

.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

@media (min-width: 768px) {
    .dashboard-stats {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* =====================================================
   RESPONSIVE AUTH PAGES
   ===================================================== */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: stretch;
}

.auth-left,
.auth-right {
    flex: 1;
}

.auth-left {
    display: none;
    background: linear-gradient(135deg, var(--primary-blue) 0%, #1D4ED8 100%);
    padding: var(--spacing-2xl);
    color: var(--white);
}

.auth-right {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
}

.auth-form-container {
    width: 100%;
    max-width: 400px;
}

@media (min-width: 1024px) {
    .auth-left {
        display: flex;
        flex-direction: column;
        justify-content: center;
    }
}

/* =====================================================
   RESPONSIVE MODULE GAME LAYOUT
   ===================================================== */
.game-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.game-main {
    flex: 1;
}

.game-sidebar {
    width: 100%;
}

@media (min-width: 1024px) {
    .game-container {
        flex-direction: row;
    }

    .game-sidebar {
        width: 320px;
        flex-shrink: 0;
    }
}

/* =====================================================
   RESPONSIVE VIDEO CONSULTATION
   ===================================================== */
.video-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

.video-main {
    aspect-ratio: 16/9;
    background: var(--text-primary);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.video-participants {
    display: flex;
    gap: var(--spacing-md);
    overflow-x: auto;
    padding-bottom: var(--spacing-sm);
}

.video-participant {
    width: 120px;
    flex-shrink: 0;
    aspect-ratio: 16/9;
    background: var(--text-primary);
    border-radius: var(--radius-lg);
}

@media (min-width: 768px) {
    .video-grid {
        grid-template-columns: 1fr 200px;
    }

    .video-participants {
        flex-direction: column;
        overflow-x: visible;
    }

    .video-participant {
        width: 100%;
    }
}

@media (min-width: 1024px) {
    .video-grid {
        grid-template-columns: 1fr 280px;
    }
}

/* =====================================================
   PRINT STYLES
   ===================================================== */
@media print {

    .navbar,
    .sidebar,
    .mobile-menu-toggle,
    .btn,
    .toast-container {
        display: none !important;
    }

    .main-content {
        margin-left: 0 !important;
        padding: 0 !important;
    }

    .card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ccc;
    }

    a {
        color: inherit;
        text-decoration: underline;
    }

    body {
        font-size: 12pt;
        color: #000;
        background: #fff;
    }
}

/* =====================================================
   LANDSCAPE ORIENTATION
   ===================================================== */
@media (max-height: 500px) and (orientation: landscape) {
    .auth-page {
        min-height: auto;
        padding: var(--spacing-md) 0;
    }

    .modal {
        max-height: 95vh;
    }

    .game-container {
        max-height: calc(100vh - 64px - 32px);
        overflow: hidden;
    }
}

/* =====================================================
   RESPONSIVE ACTIVITY NAVBAR
   ===================================================== */
.activity-navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--white);
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    border-bottom: 1px solid var(--border-color);
}

.dark-mode .activity-navbar {
    background: #1e293b;
    border-color: #334155;
}

.activity-navbar .back-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    background: var(--bg-secondary);
    transition: all 0.2s;
    font-size: 1.125rem;
}

.dark-mode .activity-navbar .back-btn {
    background: #334155 !important;
    color: #f1f5f9 !important;
}

.activity-navbar .back-btn:active {
    transform: scale(0.9);
}

.activity-title-group {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.activity-category {
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    line-height: 1;
    margin-bottom: 2px;
}

.activity-name {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.2;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.dark-mode .activity-name {
    color: #f1f5f9 !important;
}

.activity-actions {
    display: flex;
    gap: 0.5rem;
}

.action-btn {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.dark-mode .action-btn {
    color: #94a3b8;
}

@media (min-width: 769px) {
    .activity-navbar {
        display: none !important;
    }
}

/* =====================================================
   TOUCH DEVICE OPTIMIZATIONS
   ===================================================== */
@media (hover: none) and (pointer: coarse) {

    /* Learning Module Activities */
    .activity-container {
        padding: var(--spacing-md) !important;
        height: auto !important;
        min-height: calc(100vh - var(--mobile-header-height, 56px));
        margin-top: calc(var(--mobile-header-height, 56px)) !important;
        padding-bottom: 5rem !important;
        display: flex;
        flex-direction: column !important;
    }

    .activity-header,
    .topbar,
    .navbar-container,
    .module-header:not(.mobile-header) {
        display: none !important;
        /* Replaced by standardized mobile header */
    }

    .activity-sidebar {
        width: 100% !important;
        height: auto !important;
        border-right: none !important;
        border-bottom: 2px solid var(--color-border, var(--border)) !important;
        padding: var(--spacing-md) !important;
        margin-bottom: var(--spacing-md) !important;
    }

    .activity-main {
        padding: 0 !important;
        flex: 1;
    }

    .activity-controls {
        display: flex;
        flex-wrap: wrap;
        gap: var(--spacing-xs) !important;
    }

    .reading-content {
        padding: var(--spacing-md) !important;
        font-size: 1.1rem !important;
        line-height: var(--line-height-relaxed) !important;
    }

    /* Tracing and Drawing specific */
    .tracing-box {
        padding: var(--spacing-md) !important;
        margin: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
    }

    .canvas-wrapper {
        width: 100% !important;
        margin: var(--spacing-md) 0 !important;
        aspect-ratio: 2/1;
        overflow: hidden;
    }

    canvas {
        max-width: 100% !important;
        height: auto !important;
        width: 100% !important;
    }

    .letter-display {
        font-size: 3rem !important;
    }

    /* Mobile Interaction Fixes */
    .button-group,
    .game-buttons,
    .activity-controls {
        flex-direction: row;
        justify-content: center;
        flex-wrap: wrap;
        width: 100%;
        gap: var(--spacing-xs) !important;
    }

    .button-control,
    .btn-control {
        flex: 1;
        min-width: 120px;
        justify-content: center;
    }

    /* Larger touch targets */
    .btn {
        min-height: 48px;
    }

    .form-input,
    .form-select,
    .form-textarea {
        min-height: 52px;
    }

    .sidebar-link {
        padding: var(--spacing-md);
    }

    .dropdown-item {
        padding: var(--spacing-md);
    }

    /* Remove hover effects that don't work on touch */
    .card:hover {
        transform: none;
    }

    .module-card:hover {
        transform: none;
    }

    /* Disable sidebar hover expansion on touch */
    .sidebar:hover {
        width: 80px;
    }
}

/* =====================================================
   HIGH RESOLUTION DISPLAYS
   ===================================================== */
@media (-webkit-min-device-pixel-ratio: 2),
(min-resolution: 192dpi) {

    /* Thinner borders for retina */
    .card,
    .form-input,
    .btn {
        border-width: 0.5px;
    }
}