/* ========================================
   MOBILE OPTIMIZATION - RESPONSIVE STYLES
   ======================================== */

/* Base Mobile Styles */
@media (max-width: 768px) {

    /* Typography */
    body {
        font-size: 14px;
        line-height: 1.6;
    }

    h1 {
        font-size: 24px !important;
    }

    h2 {
        font-size: 20px !important;
    }

    h3 {
        font-size: 18px !important;
    }

    /* Touch-Friendly Buttons */
    button,
    .btn,
    .btn-primary,
    .btn-secondary,
    a.button {
        min-height: 44px;
        min-width: 44px;
        padding: 12px 20px;
        font-size: 16px;
        touch-action: manipulation;
    }

    /* Form Inputs */
    input[type="text"],
    input[type="email"],
    input[type="password"],
    input[type="number"],
    input[type="tel"],
    textarea,
    select {
        min-height: 44px;
        font-size: 16px;
        /* Prevents zoom on iOS */
        padding: 12px 15px;
    }

    /* Container Padding */
    .container,
    .checkout-container,
    .assignment-container,
    .bank-transfer-container {
        padding: 0 15px;
        margin: 20px auto;
    }

    /* Grid Layouts */
    .checkout-grid,
    .assignment-grid,
    .stats-grid {
        grid-template-columns: 1fr !important;
        gap: 20px;
    }

    /* Cards */
    .checkout-section,
    .assignment-card,
    .bank-card,
    .stat-card {
        padding: 20px;
        margin-bottom: 20px;
    }

    /* Navigation */
    .navbar {
        flex-wrap: wrap;
        padding: 10px 15px;
    }

    .nav-links {
        flex-direction: column;
        width: 100%;
        display: none;
    }

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

    .nav-links a {
        padding: 12px 0;
        border-bottom: 1px solid #e9ecef;
    }

    /* Mobile Menu Toggle */
    .mobile-menu-toggle {
        display: block;
        background: none;
        border: none;
        font-size: 24px;
        cursor: pointer;
        padding: 8px;
        color: #2c3e50;
    }

    /* Tables */
    table {
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    /* Course Cards */
    .course-grid {
        grid-template-columns: 1fr !important;
    }

    .course-card {
        margin-bottom: 20px;
    }

    /* Cart Items */
    .cart-item {
        flex-direction: column;
    }

    .cart-item img {
        width: 100%;
        height: 200px;
    }

    /* Payment Methods */
    .payment-method {
        padding: 15px;
    }

    .payment-method-label {
        font-size: 14px;
    }

    /* Modal */
    .modal-content {
        width: 95%;
        max-width: 95%;
        margin: 10px;
        padding: 20px;
    }

    /* Dashboard */
    .dashboard-grid {
        grid-template-columns: 1fr !important;
    }

    /* Admin Panel */
    .admin-sidebar {
        width: 100%;
        position: static;
        height: auto;
    }

    .admin-content {
        margin-left: 0;
        padding: 15px;
    }

    /* Curriculum Builder */
    .curriculum-builder {
        padding: 15px;
    }

    .module-item,
    .lesson-item {
        padding: 12px;
    }

    /* Question Manager */
    .question-item {
        padding: 15px;
    }

    /* Certificate */
    .certificate-container {
        padding: 15px;
    }

    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr !important;
        gap: 30px;
    }

    /* Spacing */
    .section-title {
        font-size: 18px;
        margin-bottom: 15px;
    }

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

    /* Show only on Mobile */
    .show-mobile {
        display: block !important;
    }
}

/* Tablet Styles */
@media (min-width: 769px) and (max-width: 1024px) {

    .checkout-grid,
    .assignment-grid {
        grid-template-columns: 1fr 1fr;
    }

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

    .container {
        max-width: 95%;
    }
}

/* Touch Optimization */
@media (hover: none) and (pointer: coarse) {

    /* Increase touch targets */
    a,
    button,
    input,
    select,
    textarea {
        min-height: 44px;
        min-width: 44px;
    }

    /* Remove hover effects on touch devices */
    .btn:hover,
    .button:hover,
    a:hover {
        transform: none;
    }

    /* Add active states instead */
    .btn:active,
    .button:active,
    a:active {
        opacity: 0.8;
        transform: scale(0.98);
    }
}

/* Landscape Mobile */
@media (max-width: 768px) and (orientation: landscape) {
    .modal-content {
        max-height: 90vh;
        overflow-y: auto;
    }

    .bank-card,
    .success-card,
    .pending-card {
        padding: 20px;
    }
}

/* Small Mobile (< 375px) */
@media (max-width: 374px) {
    body {
        font-size: 13px;
    }

    h1 {
        font-size: 20px !important;
    }

    h2 {
        font-size: 18px !important;
    }

    .btn,
    .btn-primary,
    .btn-secondary {
        font-size: 14px;
        padding: 10px 15px;
    }

    .container {
        padding: 0 10px;
    }
}

/* iOS Specific Fixes */
@supports (-webkit-touch-callout: none) {

    /* Fix iOS input zoom */
    input[type="text"],
    input[type="email"],
    input[type="password"],
    input[type="number"],
    input[type="tel"],
    textarea,
    select {
        font-size: 16px !important;
    }

    /* Fix iOS button styling */
    button,
    input[type="submit"],
    input[type="button"] {
        -webkit-appearance: none;
        border-radius: 8px;
    }
}

/* Android Specific Fixes */
@media screen and (-webkit-min-device-pixel-ratio: 0) {
    select {
        background-image: url("data:image/svg+xml;utf8,<svg fill='black' height='24' viewBox='0 0 24 24' width='24' xmlns='http://www.w3.org/2000/svg'><path d='M7 10l5 5 5-5z'/></svg>");
        background-repeat: no-repeat;
        background-position: right 10px center;
        padding-right: 35px;
    }
}

/* Accessibility - High Contrast Mode */
@media (prefers-contrast: high) {

    .btn,
    .btn-primary,
    .btn-secondary {
        border: 2px solid currentColor;
    }

    .card,
    .checkout-section,
    .assignment-card {
        border: 2px solid #2c3e50;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Print Styles */
@media print {

    .navbar,
    .footer,
    .mobile-menu-toggle,
    .btn,
    button {
        display: none !important;
    }

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

    .container {
        max-width: 100%;
    }
}