/* ============================================
 *  MODERN CSS ENHANCEMENTS FOR MEDU
 *  Version: 2026
 * ============================================ */

/* ============================================
 *  1. CSS VARIABLES (Custom Properties)
 * ============================================ */
:root {
    /* Primary Colors */
    --primary-color: #00349a;
    --primary-hover: #0047cc;
    --primary-dark: #002570;
    --secondary-color: #393e46;
    --accent-color: #00adb5;
    
    /* Neutral Colors */
    --white: #ffffff;
    --light-gray: #f8f9fa;
    --medium-gray: #d9d9d7;
    --dark-gray: #393e46;
    --text-color: #393e46;
      /* Gradients */
    --gradient-primary: linear-gradient(135deg, #00349a 0%, #0047cc 100%);
    --gradient-overlay: linear-gradient(180deg, rgba(0,0,0,0.1) 0%, rgba(0,0,0,0.5) 100%);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* Typography */
    --font-primary: 'Roboto-Regular', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-medium: 'Roboto-Medium', sans-serif;
    --font-light: 'Roboto-Light', sans-serif;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 50%;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 40px rgba(0,0,0,0.15);
    --shadow-inner: inset 0 2px 4px rgba(0,0,0,0.06);
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-base: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
}

/* ============================================
 *  2. MODERN RESET & BASE STYLES
 * ============================================ */
* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ============================================
 *  3. MODERN HEADER ENHANCEMENTS
 * ============================================ */
.header-01 {
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--white);
    transition: all var(--transition-base);
}

.topbar-01 {
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    padding: 0.75rem 0;
    color: var(--white);
    position: relative;
    z-index: 1002;
}

/* Modern Topbar Layout */
.topbar-01 .left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.topbar-01 .left .today {
    flex-shrink: 0;
}

.topbar-01 .left .today p {
    margin: 0;
    color: rgba(255,255,255,0.9);
    font-size: 0.875rem;
    font-family: var(--font-medium);
}

.topbar-01 .left .searchbar {
    flex: 1;
    max-width: 450px;
}

.topbar-01 .right {
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

.searchbar form {
    display: flex;
    align-items: center;
    background: transparent;
    border-radius: 10px;
    padding: 0;
    backdrop-filter: blur(10px);
    transition: all var(--transition-base);
    overflow: hidden;
    border: 2px solid transparent;
}

.searchbar form:hover,
.searchbar form:focus-within {
    background: rgba(255,255,255,0.95);
    box-shadow: 0 4px 12px rgba(0, 52, 154, 0.15);
    border-color: rgba(0, 52, 154, 0.2);
}

.searchbar input {
    flex: 1;
    background: transparent;
    border: none;
    color: rgba(255,255,255,0.9);
    padding: 0.75rem 1.25rem;
    outline: none;
    font-size: 0.9rem;
    font-family: var(--font-primary);
    transition: color var(--transition-base);
}

.searchbar form:hover input,
.searchbar form:focus-within input {
    color: var(--dark-gray);
}

.searchbar input::placeholder {
    color: rgba(255,255,255,0.7);
    font-size: 0.875rem;
    transition: color var(--transition-base);
}

.searchbar form:hover input::placeholder,
.searchbar form:focus-within input::placeholder {
    color: #878787;
}

.searchbar button {
    background: transparent;
    border: none;
    padding: 0.75rem 1.25rem;
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.searchbar button:hover {
    background: rgba(0, 52, 154, 0.05);
}

.searchbar button img {
    width: 18px;
    height: 18px;
    filter: brightness(0) invert(1);
    transition: all var(--transition-fast);
    position: static;
}

.searchbar form:hover button img,
.searchbar form:focus-within button img {
    filter: brightness(0.4);
}

.searchbar button:hover img {
    transform: scale(1.1);
}

/* Modern Language Switcher */
.language-change {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    padding: 0.5rem 1rem;
    /* background: rgba(255,255,255,0.1); */
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    position: relative;
    z-index: 1001;
}

.language-change:hover {
    /* background: rgba(255,255,255,0.2); */
    transform: translateY(-2px);
}

/* Modern User Menu Dropdown */
.language-change .user-menu {
    position: absolute;
    right: 0;
    top: 0;
    opacity: 0;
    visibility: hidden;
    background: var(--white);
    text-align: left;
    min-width: 200px;
    z-index: -1;
    border-radius: var(--radius-md);
    padding: 0.5rem;
    box-shadow: var(--shadow-xl);
    transition: all var(--transition-base);
    transform: translateY(-10px);
}

.language-change:hover .user-menu,
.language-change .user-menu:hover {
    opacity: 1;
    visibility: visible;
    top: calc(100% + 0.5rem);
    z-index: 9999;
    transform: translateY(0);
}

.language-change .user-menu ul {
    padding: 0;
    margin: 0;
    list-style: none;
}

.language-change .user-menu ul li {
    list-style: none;
    display: block;
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: 0.25rem;
}

.language-change .user-menu ul li:last-child {
    margin-bottom: 0;
}

.language-change .user-menu ul li a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    font-family: var(--font-medium);
    font-size: 0.9rem;
    color: var(--dark-gray);
    transition: all var(--transition-fast);
    text-decoration: none;
}

.language-change .user-menu ul li a img {
    width: 24px;
    height: 24px;
    object-fit: cover;
    border-radius: 4px;
}

.language-change .user-menu ul li:hover {
    background: var(--gradient-primary);
}

.language-change .user-menu ul li:hover a {
    color: var(--white);
    transform: translateX(5px);
}

/* Modern Navigation */
.navbar-menu {
    background: var(--white);
    box-shadow: var(--shadow-sm);
    position: relative;
    z-index: 1001;
}

.navbar-nav .nav-link {
    position: relative;
    padding: 1rem 1.25rem !important;
    font-family: var(--font-medium);
    font-size: 0.95rem;
    color: var(--dark-gray);
    transition: all var(--transition-base);
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: translateX(-50%);
    transition: width var(--transition-base);
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link:focus {
    color: var(--primary-color);
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link:focus::after {
    width: 80%;
}

/* Modern Dropdown */
.dropdown-menu {
    border: none;
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-md);
    padding: 0.5rem;
    margin-top: 0.5rem;
    animation: fadeInDown 0.3s ease-in-out;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.dropdown-item {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    font-size: 0.9rem;
}

.dropdown-item:hover {
    background: var(--gradient-primary);
    color: var(--white);
    transform: translateX(5px);
}

/* ============================================
 *  4. MODERN BUTTONS
 * ============================================ */
.btn-modern {
    padding: 0.875rem 2rem;
    border-radius: var(--radius-md);
    font-family: var(--font-medium);
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn-modern::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255,255,255,0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-modern:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary-modern {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-primary-modern:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
}

/* ============================================
 *  5. MODERN CARDS & BLOCKS
 * ============================================ */
.card-modern {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    overflow: hidden;
    border: none;
}

.card-modern:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-8px);
}

.card-modern img {
    transition: transform var(--transition-slow);
}

.card-modern:hover img {
    transform: scale(1.08);
}

/* Block Styles Enhancement */
.block-style-16,
.block-style-17,
.block-style-18 {
    animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.block-style-16 h1 {
    font-family: var(--font-medium);
    color: var(--dark-gray);
    margin: var(--spacing-md) 0;
    line-height: 1.3;
}

.block-style-17 img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.block-style-17 .bg-orange {
    background: var(--gradient-primary);
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-full);
    display: inline-block;
    color: var(--white);
    font-family: var(--font-medium);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-md);
}

.block-style-18 {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin-top: var(--spacing-md);
}

/* ============================================
 *  6. MODERN FORMS
 * ============================================ */
input[type="text"],
input[type="email"],
input[type="password"],
textarea,
select {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 2px solid var(--medium-gray);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: all var(--transition-base);
    background: var(--white);
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 52, 154, 0.1);
}

/* ============================================
 *  7. MODERN FOOTER
 * ============================================ */
#section-footer {
    background: linear-gradient(135deg, var(--dark-gray) 0%, #2c3139 100%);
    color: rgba(255,255,255,0.9);
    padding: var(--spacing-xl) 0 var(--spacing-md);
    position: relative;
}

#section-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.ft_social_links {
    display: flex;
    gap: 1rem;
    list-style: none;
    padding: 0;
    margin: var(--spacing-md) 0;
}

.ft_social_links li a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius-full);
    color: var(--white);
    transition: all var(--transition-base);
    backdrop-filter: blur(10px);
}

.ft_social_links li a:hover {
    background: var(--gradient-primary);
    transform: translateY(-5px) rotate(5deg);
    box-shadow: var(--shadow-lg);
}

.ft_backtotop {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    cursor: pointer;
    box-shadow: var(--shadow-xl);
    transition: all var(--transition-base);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ft_backtotop:hover {
    transform: translateY(-5px);
    box-shadow: 0 25px 50px rgba(0, 52, 154, 0.3);
}

.ft_backtotop svg {
    fill: var(--white);
}

/* ============================================
 *  8. MODERN SLIDER ENHANCEMENTS
 * ============================================ */
#full-slider-wrapper {
    position: relative;
    overflow: hidden;
}

.slide_typo {
    text-shadow: 2px 2px 10px rgba(0,0,0,0.3);
    animation: slideInRight 1s ease-out;
}

.slide_typo_2 {
    text-shadow: 1px 1px 8px rgba(0,0,0,0.3);
    animation: slideInRight 1.2s ease-out;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ============================================
 *  9. MODERN VIDEO CARDS
 * ============================================ */
.video_thumbnail {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.video_thumbnail:hover {
    box-shadow: var(--shadow-xl);
    transform: scale(1.02);
}

.video_thumbnail .play-btn {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
}

.video_thumbnail:hover .play-btn {
    transform: scale(1.1);
    box-shadow: 0 0 0 10px rgba(0, 52, 154, 0.2);
}

/* ============================================
 *  10. MODERN ACCORDION
 * ============================================ */
#accordion .card {
    border: none;
    margin-bottom: 1rem;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

#accordion .card:hover {
    box-shadow: var(--shadow-md);
}

#accordion .card .card-header {
    background: linear-gradient(135deg, var(--light-gray) 0%, var(--white) 100%);
    border: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

#accordion .card .card-header button {
    color: var(--primary-color);
    font-family: var(--font-medium);
    font-size: 1.1rem;
    transition: all var(--transition-base);
}

#accordion .card .card-header button:hover {
    color: var(--primary-hover);
}

#accordion .card .card-body {
    background: var(--white);
    padding: var(--spacing-md);
}

/* ============================================
 *  11. MODERN NAV PILLS
 * ============================================ */
.nav-pills {
    margin-bottom: var(--spacing-lg);
}

.nav-pills li a {
    background: var(--light-gray);
    color: var (--dark-gray);
    border-radius: var(--radius-md);
    padding: 1.25rem 1.5rem;
    font-family: var(--font-medium);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.nav-pills li a:hover {
    background: var(--gradient-primary);
    color: var(--white);
    transform: translateX(10px);
    box-shadow: var(--shadow-lg);
}

.nav-pills li a.active {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

/* ============================================
 *  12. MODERN UTILITIES
 * ============================================ */
.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.glass-effect {
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
}

.hover-lift {
    transition: transform var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-5px);
}

/* Loading Animation */
.loading-modern {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(0, 52, 154, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ============================================
 *  13. RESPONSIVE ENHANCEMENTS
 * ============================================ */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
    }
    
    .card-modern {
        margin-bottom: var(--spacing-md);
    }
    
    .navbar-nav .nav-link {
        padding: 0.75rem 1rem !important;
    }
    
    .btn-modern {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .ft_backtotop {
        width: 50px;
        height: 50px;
        bottom: 1rem;
        right: 1rem;
    }
    
    /* Responsive Topbar */
    .topbar-01 .left {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .topbar-01 .left .searchbar {
        max-width: 100%;
    }
    
    .searchbar input {
        font-size: 0.85rem;
        padding: 0.65rem 1rem;
    }
    
    .searchbar button {
        padding: 0.65rem 1rem;
    }
}

@media (max-width: 576px) {
    .topbar-01 .left .today {
        display: none;
    }
    
    .searchbar input::placeholder {
        font-size: 0.8rem;
    }
}

/* ============================================
 *  14. ACCESSIBILITY IMPROVEMENTS
 * ============================================ */
*:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border-width: 0;
}

/* ============================================
 *  15. PRINT STYLES
 * ============================================ */
@media print {
    .navbar-menu,
    .ft_backtotop,
    .searchbar,
    .language-change {
        display: none !important;
    }
    
    body {
        background: white;
    }
}

/* ============================================
 *  16. PERFORMANCE OPTIMIZATIONS
 * ============================================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ============================================
 *  17. BUTTON COLOR OVERRIDES
 * ============================================ */

/* Override all button primary colors to blue */
.btn-primary,
button.btn-primary,
input[type="submit"],
input[type="button"],
.btn-default,
.submit-btn,
.primary-btn {
    background: var(--gradient-primary) !important;
    border-color: var(--primary-color) !important;
    color: var(--white) !important;
}

.btn-primary:hover,
button.btn-primary:hover,
input[type="submit"]:hover,
input[type="button"]:hover,
.btn-default:hover,
.submit-btn:hover,
.primary-btn:hover {
    background: linear-gradient(135deg, var(--primary-hover) 0%, var(--primary-color) 100%) !important;
    border-color: var(--primary-hover) !important;
    box-shadow: var(--shadow-lg) !important;
}

/* Override Bootstrap default button colors */
.bg-orange,
.btn-orange,
.badge-orange {
    background: var(--gradient-primary) !important;
    color: var(--white) !important;
}

/* Override any orange backgrounds */
[style*="background: #f96d00"],
[style*="background-color: #f96d00"],
[style*="background:#f96d00"],
[style*="background-color:#f96d00"] {
    background: var(--primary-color) !important;
    background-color: var(--primary-color) !important;
}

/* Override any orange text colors */
[style*="color: #f96d00"],
[style*="color:#f96d00"] {
    color: var(--primary-color) !important;
}