/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #0A2463;
    --primary-dark: #071A49;
    --primary-light: #1E3A8A;
    --secondary: #FF6B35;
    --secondary-dark: #E55A2B;
    --accent: #00B4D8;
    --success: #2ECC71;
    --warning: #F39C12;
    --danger: #E74C3C;
    --info: #3498DB;
    
    --text-primary: #FFFFFF;
    --text-secondary: #B0B7C3;
    --text-muted: #6C757D;
    --text-light: #F8F9FA;
    
    --bg-dark: #0F172A;
    --bg-darker: #0A0F1C;
    --bg-card: #1E293B;
    --bg-card-hover: #2D3748;
    --bg-input: rgba(255, 255, 255, 0.05);
    --border-color: #334155;
    --border-light: rgba(255, 255, 255, 0.1);
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.3);
    --shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.1);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    --transition: all 0.3s ease;
    --transition-fast: all 0.15s ease;
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
    --text-primary: #1E293B;
    --text-secondary: #475569;
    --text-muted: #64748B;
    --text-light: #1E293B;
    
    --bg-dark: #FFFFFF;
    --bg-darker: #F8FAFC;
    --bg-card: #F1F5F9;
    --bg-card-hover: #E2E8F0;
    --bg-input: rgba(0, 0, 0, 0.03);
    --border-color: #CBD5E1;
    --border-light: rgba(0, 0, 0, 0.1);
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-darker);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4 {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: 1.5rem;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1.25rem;
}

h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
}

h4 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.lead {
    font-size: 1.25rem;
    line-height: 1.8;
}

.section-title {
    text-align: center;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    max-width: 700px;
    margin: 2rem auto 4rem;
    font-size: 1.125rem;
    color: var(--text-secondary);
}

.section {
    padding: 6rem 0;
    position: relative;
}

.section.dark {
    background: var(--bg-dark);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: var(--transition);
    border: 2px solid transparent;
    cursor: pointer;
    font-family: 'Inter', sans-serif;
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 5px;
    height: 5px;
    background: rgba(255, 255, 255, 0.5);
    opacity: 0;
    border-radius: 100%;
    transform: scale(1, 1) translate(-50%);
    transform-origin: 50% 50%;
}

.btn:focus:not(:active)::after {
    animation: ripple 1s ease-out;
}

@keyframes ripple {
    0% {
        transform: scale(0, 0);
        opacity: 0.5;
    }
    100% {
        transform: scale(20, 20);
        opacity: 0;
    }
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, var(--secondary-dark), var(--secondary));
}

.btn-outline {
    background: transparent;
    border-color: var(--border-color);
    color: var(--text-primary);
}

.btn-outline:hover {
    border-color: var(--primary);
    background: rgba(10, 36, 99, 0.1);
    transform: translateY(-2px);
}

.btn-large {
    padding: 18px 36px;
    font-size: 1.125rem;
}

.btn-small {
    padding: 10px 20px;
    font-size: 0.875rem;
}

.btn-full {
    width: 100%;
}

.btn-icon {
    padding: 12px;
    border-radius: var(--radius-full);
}

.btn-icon i {
    font-size: 1.25rem;
}

.btn-loading {
    pointer-events: none;
    opacity: 0.8;
}

.btn-loading .btn-text {
    visibility: hidden;
}

.btn-loading::before {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Language Selector */
.lang-selector {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    display: flex;
    gap: 4px;
    background: var(--bg-card);
    padding: 6px;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-light);
}

.lang-btn {
    padding: 8px 20px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    border-radius: var(--radius-full);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.lang-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.lang-btn.active {
    background: var(--primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-light);
    transition: all 0.3s ease;
}

.nav.scrolled {
    background: rgba(15, 23, 42, 0.98);
    box-shadow: var(--shadow-lg);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
    padding: 0 2rem;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 15px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 800;
    font-size: 1.5rem;
    transition: var(--transition);
}

.nav-brand:hover {
    transform: translateY(-1px);
}

.logo {
    height: 40px;
    width: auto;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.75rem;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.nav-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    font-size: 1.05rem;
    padding: 8px 0;
}

.nav-link:hover {
    color: var(--text-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    transition: var(--transition);
    border-radius: 1px;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link.active {
    color: var(--text-primary);
    font-weight: 600;
}

.nav-link.external {
    color: var(--accent);
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-link.external:hover {
    color: var(--primary);
}

/* Hero */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    margin-top: 80px;
    background: linear-gradient(135deg, rgba(10, 36, 99, 0.9) 0%, rgba(30, 58, 138, 0.7) 50%, rgba(0, 180, 216, 0.4) 100%);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 80%, rgba(255, 107, 53, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(0, 180, 216, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-container {
    width: 100%;
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    padding: 4rem 2rem;
}

.hero-badge {
    display: inline-block;
    padding: 10px 24px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-full);
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 2.5rem;
    color: white;
    text-transform: uppercase;
    letter-spacing: 1px;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.gradient-text {
    background: linear-gradient(135deg, #FF6B35, #00B4D8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
}

.hero-description {
    font-size: 1.375rem;
    margin: 2rem 0 3rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.9);
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 3rem;
}

/* Course Cards */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
    margin-top: 4rem;
}

.course-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    transition: var(--transition-slow);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
    overflow: hidden;
}

.course-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, transparent, currentColor, transparent);
    opacity: 0;
    transition: var(--transition);
}

.course-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.course-card:hover::before {
    opacity: 1;
}

.course-card.revit {
    border-color: #FF6B35;
}

.course-card.revit:hover {
    box-shadow: 0 20px 60px rgba(255, 107, 53, 0.2);
}

.course-card.archicad {
    border-color: #00B4D8;
}

.course-card.archicad:hover {
    box-shadow: 0 20px 60px rgba(0, 180, 216, 0.2);
}

.course-card.autocad {
    border-color: #2ECC71;
}

.course-card.autocad:hover {
    box-shadow: 0 20px 60px rgba(46, 204, 113, 0.2);
}

.course-card.sketchup {
    border-color: #F39C12;
}

.course-card.sketchup:hover {
    box-shadow: 0 20px 60px rgba(243, 156, 18, 0.2);
}

.course-card.lumion {
    border-color: #9B59B6;
}

.course-card.lumion:hover {
    box-shadow: 0 20px 60px rgba(155, 89, 182, 0.2);
}

.course-card.excel {
    border-color: #3498DB;
}

.course-card.excel:hover {
    box-shadow: 0 20px 60px rgba(52, 152, 219, 0.2);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.75rem;
}

.card-icon {
    width: 56px;
    height: 56px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    color: var(--text-primary);
    transition: var(--transition);
}

.course-card:hover .card-icon {
    transform: scale(1.1) rotate(5deg);
}

.card-badges {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.card-badges .badge {
    padding: 6px 14px;
    font-size: 0.75rem;
    margin: 0;
    font-weight: 600;
    letter-spacing: 0.3px;
    border: 1px solid transparent;
}

.badge-certified {
    background: rgba(46, 204, 113, 0.15);
    color: #2ECC71;
    border-color: rgba(46, 204, 113, 0.3);
}

.badge-popular {
    background: rgba(243, 156, 18, 0.15);
    color: #F39C12;
    border-color: rgba(243, 156, 18, 0.3);
}

.badge-projects {
    background: rgba(155, 89, 182, 0.15);
    color: #9B59B6;
    border-color: rgba(155, 89, 182, 0.3);
}

.badge-essential {
    background: rgba(52, 152, 219, 0.15);
    color: #3498DB;
    border-color: rgba(52, 152, 219, 0.3);
}

.badge-creative {
    background: rgba(231, 76, 60, 0.15);
    color: #E74C3C;
    border-color: rgba(231, 76, 60, 0.3);
}

.badge-visual {
    background: rgba(155, 89, 182, 0.15);
    color: #9B59B6;
    border-color: rgba(155, 89, 182, 0.3);
}

.badge-management {
    background: rgba(41, 128, 185, 0.15);
    color: #2980B9;
    border-color: rgba(41, 128, 185, 0.3);
}

.card-title {
    font-size: 1.75rem;
    margin-bottom: 1.25rem;
    color: var(--text-primary);
}

.card-meta {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.card-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.card-meta i {
    font-size: 1.1rem;
}

.card-description {
    margin-bottom: 2rem;
    flex-grow: 1;
    color: var(--text-secondary);
    line-height: 1.7;
}

.card-features {
    list-style: none;
    margin-bottom: 2.5rem;
}

.card-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.card-features i {
    color: var(--success);
    font-size: 1.1rem;
    flex-shrink: 0;
}

.card-footer {
    display: flex;
    gap: 1rem;
    margin-top: auto;
}

.card-footer .btn {
    flex: 1;
}

/* Format Cards */
.formats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
    margin-top: 4rem;
}

.format-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    text-align: center;
    transition: var(--transition-slow);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.format-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.format-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, currentColor 0%, transparent 100%);
    opacity: 0;
    transition: var(--transition);
}

.format-card:hover::before {
    opacity: 1;
}

.format-on-site {
    border-color: #00B4D8;
    color: #00B4D8;
}

.format-online {
    border-color: #2ECC71;
    color: #2ECC71;
}

.format-hybrid {
    border-color: #F39C12;
    color: #F39C12;
}

.format-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 2rem;
    background: linear-gradient(135deg, currentColor, rgba(255, 255, 255, 0.2));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
    transition: var(--transition);
}

.format-card:hover .format-icon {
    transform: scale(1.1) rotate(10deg);
}

.format-title {
    margin-bottom: 1.25rem;
    font-size: 1.75rem;
    color: var(--text-primary);
}

.format-description {
    margin-bottom: 2rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.format-features {
    list-style: none;
    text-align: left;
    margin-bottom: 2.5rem;
}

.format-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.format-features i {
    color: var(--success);
    font-size: 1.1rem;
}

.format-meta {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    color: var(--text-muted);
    font-size: 0.9rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.format-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Certification */
.certification-section {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    position: relative;
    overflow: hidden;
}

.certification-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.certification-content {
    display: flex;
    align-items: center;
    gap: 4rem;
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.certification-badge {
    flex-shrink: 0;
    width: 140px;
    height: 140px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3.5rem;
    color: var(--secondary);
    box-shadow: var(--shadow-lg);
    border: 4px solid rgba(255, 255, 255, 0.2);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(255, 107, 53, 0.4); }
    70% { box-shadow: 0 0 0 20px rgba(255, 107, 53, 0); }
    100% { box-shadow: 0 0 0 0 rgba(255, 107, 53, 0); }
}

.certification-text {
    flex-grow: 1;
}

.certification-description {
    font-size: 1.25rem;
    margin: 1.75rem 0;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.8;
}

.certification-features {
    list-style: none;
    margin-top: 2rem;
}

.certification-features li {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 1.25rem;
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.9);
}

.certification-features i {
    color: var(--success);
    font-size: 1.5rem;
    flex-shrink: 0;
}

/* Why Choose Us */
.why-section {
    position: relative;
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
    margin-top: 4rem;
}

.why-card {
    text-align: center;
    padding: 2.5rem;
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    transition: var(--transition-slow);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.why-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary);
    box-shadow: var(--shadow-xl);
}

.why-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.why-card:hover::before {
    transform: translateX(0);
}

.why-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 2rem;
    background: linear-gradient(135deg, rgba(10, 36, 99, 0.1), rgba(0, 180, 216, 0.1));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--primary);
    transition: var(--transition);
}

.why-card:hover .why-icon {
    transform: scale(1.1);
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
}

.why-card h3 {
    margin-bottom: 1.25rem;
    font-size: 1.5rem;
}

.why-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Contact Section - UPDATED */
.contact-section {
    position: relative;
    background: linear-gradient(135deg, rgba(10, 36, 99, 0.03) 0%, rgba(0, 180, 216, 0.03) 100%);
}

.contact-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    opacity: 0.2;
}

.contact-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    overflow: hidden;
    display: grid;
    grid-template-columns: 1fr 1fr;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-color);
    position: relative;
    z-index: 1;
}

.contact-content {
    padding: 4rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    position: relative;
    overflow: hidden;
}

.contact-content::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    opacity: 0.1;
}

.contact-title {
    color: white;
    margin-bottom: 1.5rem;
    font-size: 2.5rem;
    position: relative;
    z-index: 1;
}

.contact-description {
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 3rem;
    font-size: 1.125rem;
    line-height: 1.8;
    position: relative;
    z-index: 1;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    position: relative;
    z-index: 1;
}

.contact-item {
    display: flex;
    gap: 1.25rem;
    align-items: flex-start;
}

.contact-item i {
    font-size: 1.75rem;
    color: var(--secondary);
    margin-top: 4px;
    flex-shrink: 0;
}

.contact-item h4 {
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 6px;
    font-size: 1.125rem;
    font-weight: 600;
}

.contact-item p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 8px;
    line-height: 1.6;
}

.contact-item a, .contact-item span {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
    display: inline-block;
}

.contact-item a:hover {
    color: var(--secondary);
    transform: translateX(5px);
}

.contact-form {
    padding: 4rem;
    background: var(--bg-card);
    position: relative;
}

/* Form Styles - UPDATED */
.form-header {
    margin-bottom: 2.5rem;
}

.form-title {
    font-size: 2rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    position: relative;
    padding-bottom: 15px;
}

.form-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 2px;
}

.form-subtitle {
    color: var(--text-secondary);
    font-size: 1.0625rem;
    line-height: 1.7;
}

.form-group {
    margin-bottom: 1.75rem;
    position: relative;
}

.form-label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-label.required::after {
    content: ' *';
    color: var(--danger);
}

.form-control {
    width: 100%;
    padding: 16px 20px;
    font-size: 1rem;
    border-radius: var(--radius-md);
    border: 2px solid var(--border-color);
    background: var(--bg-input);
    transition: var(--transition);
    font-family: 'Inter', sans-serif;
    color: var(--text-primary);
    line-height: 1.5;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(10, 36, 99, 0.15);
    background: var(--bg-card);
}

.form-control::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

.form-control:hover:not(:focus) {
    border-color: var(--border-light);
}

.form-control.select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%2364758B' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 20px center;
    background-size: 16px;
    padding-right: 50px;
    cursor: pointer;
}

textarea.form-control {
    min-height: 150px;
    resize: vertical;
    line-height: 1.6;
}

/* Form Validation Styles - UPDATED */
.form-control.success {
    border-color: var(--success);
    background-color: rgba(46, 204, 113, 0.05);
}
select.form-control {
    color: var(--text-primary);
    background-color: var(--bg-card);
    cursor: pointer;
}

select.form-control option {
    color: var(--text-primary);
    background-color: var(--bg-card);
    padding: 12px 16px;
    font-size: 1rem;
    border-bottom: 1px solid var(--border-color);
}

select.form-control option:hover,
select.form-control option:focus,
select.form-control option:checked {
    background-color: var(--bg-card-hover);
    color: var(--text-primary);
}

/* Pour le thème clair aussi */
[data-theme="light"] select.form-control,
[data-theme="light"] select.form-control option {
    color: #1E293B;
    background-color: #F1F5F9;
}

[data-theme="light"] select.form-control option:hover,
[data-theme="light"] select.form-control option:focus,
[data-theme="light"] select.form-control option:checked {
    background-color: #E2E8F0;
    color: #1E293B;
}
.form-control.error {
    border-color: var(--danger);
    background-color: rgba(231, 76, 60, 0.05);
}

.form-control.error:focus {
    box-shadow: 0 0 0 4px rgba(231, 76, 60, 0.15);
}

.error-message {
    color: var(--danger);
    font-size: 0.875rem;
    margin-top: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 500;
}

.error-message i {
    font-size: 1rem;
}

.success-message {
    color: var(--success);
    font-size: 0.875rem;
    margin-top: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 500;
}

.form-hint {
    color: var(--text-muted);
    font-size: 0.8125rem;
    margin-top: 6px;
    display: block;
    line-height: 1.5;
}

/* Submit Button - UPDATED */
.submit-btn {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    border: none;
    padding: 18px 32px;
    font-size: 1.125rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    width: 100%;
    letter-spacing: 0.5px;
    font-family: 'Inter', sans-serif;
    position: relative;
    overflow: hidden;
}

.submit-btn:hover:not(:disabled) {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
}

.submit-btn:active:not(:disabled) {
    transform: translateY(-1px);
}

.submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

.submit-btn.loading {
    pointer-events: none;
}

.submit-btn.loading .btn-text {
    visibility: hidden;
}

.submit-btn.loading::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 24px;
    border: 3px solid transparent;
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Form Status Messages */
.form-status {
    padding: 1rem;
    border-radius: var(--radius-md);
    margin-top: 1.5rem;
    font-weight: 500;
    display: none;
    animation: slideIn 0.3s ease;
}

.form-status.success {
    background: rgba(46, 204, 113, 0.15);
    border: 1px solid rgba(46, 204, 113, 0.3);
    color: var(--success);
    display: block;
}

.form-status.error {
    background: rgba(231, 76, 60, 0.15);
    border: 1px solid rgba(231, 76, 60, 0.3);
    color: var(--danger);
    display: block;
}

.form-status.info {
    background: rgba(52, 152, 219, 0.15);
    border: 1px solid rgba(52, 152, 219, 0.3);
    color: var(--info);
    display: block;
}

/* Notification System - UPDATED */
.notification {
    position: fixed;
    top: 100px;
    right: 20px;
    z-index: 9999;
    max-width: 400px;
    word-break: break-word;
    animation: slideInRight 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-light);
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOutRight {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

.notification.hiding {
    animation: slideOutRight 0.3s ease;
}

.notification-content {
    padding: 1.5rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.notification-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.notification-text {
    flex: 1;
    font-weight: 500;
    line-height: 1.5;
}

.notification-close {
    background: none;
    border: none;
    color: inherit;
    font-size: 1.25rem;
    cursor: pointer;
    padding: 4px;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    opacity: 0.7;
}

.notification-close:hover {
    opacity: 1;
    background: rgba(255, 255, 255, 0.1);
}

.notification-success {
    background: rgba(46, 204, 113, 0.95);
    color: white;
    border-left: 4px solid #27ae60;
}

.notification-error {
    background: rgba(231, 76, 60, 0.95);
    color: white;
    border-left: 4px solid #c0392b;
}

.notification-warning {
    background: rgba(243, 156, 18, 0.95);
    color: white;
    border-left: 4px solid #d35400;
}

.notification-info {
    background: rgba(52, 152, 219, 0.95);
    color: white;
    border-left: 4px solid #2980b9;
}

/* Footer */
.footer {
    background: var(--bg-dark);
    padding: 5rem 0 2rem;
    border-top: 1px solid var(--border-color);
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    opacity: 0.2;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 3rem;
    margin-bottom: 4rem;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 15px;
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--text-primary);
    text-decoration: none;
}

.footer-logo img {
    height: 40px;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.footer-tagline {
    color: var(--text-secondary);
    font-size: 1.0625rem;
    line-height: 1.7;
    max-width: 300px;
}

.footer-col h4 {
    margin-bottom: 1.75rem;
    font-size: 1.125rem;
    color: var(--text-primary);
    font-weight: 600;
}

.footer-col a {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 14px;
    transition: var(--transition);
    font-size: 0.95rem;
}

.footer-col a:hover {
    color: var(--text-primary);
    transform: translateX(5px);
}

.footer-col a i {
    font-size: 1.1rem;
    width: 20px;
}

.footer-col p {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.footer-col p i {
    font-size: 1.1rem;
    width: 20px;
    color: var(--accent);
}

.footer-bottom {
    text-align: center;
    padding-top: 2.5rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .container {
        padding: 0 2rem;
    }
}

@media (max-width: 1024px) {
    .courses-grid {
        grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
        gap: 2rem;
    }
    
    .certification-content {
        flex-direction: column;
        text-align: center;
        gap: 3rem;
    }
    
    .certification-badge {
        width: 120px;
        height: 120px;
        font-size: 3rem;
    }
}

@media (max-width: 900px) {
    .contact-card {
        grid-template-columns: 1fr;
        max-width: 600px;
        margin: 0 auto;
    }
    
    .contact-content {
        padding: 3rem;
    }
    
    .contact-form {
        padding: 3rem;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 4rem 0;
    }
    
    .nav-container {
        padding: 0 1.5rem;
    }
    
    .nav-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: var(--bg-dark);
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-slow);
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-lg);
        max-height: calc(100vh - 80px);
        overflow-y: auto;
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .hero {
        min-height: 90vh;
    }
    
    .hero-content {
        padding: 3rem 1.5rem;
    }
    
    .hero-description {
        font-size: 1.25rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    
    .hero-actions .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .courses-grid,
    .formats-grid,
    .why-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .course-card,
    .format-card,
    .why-card {
        padding: 2rem;
    }
    
    .contact-card {
        border-radius: var(--radius-lg);
    }
    
    .contact-content,
    .contact-form {
        padding: 2.5rem;
    }
    
    .formats-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 2.5rem;
    }
}

@media (max-width: 480px) {
    .section {
        padding: 3rem 0;
    }
    
    .container {
        padding: 0 1.25rem;
    }
    
    .hero-badge {
        padding: 8px 20px;
        font-size: 0.875rem;
    }
    
    h1 {
        font-size: clamp(2rem, 6vw, 3rem);
    }
    
    h2 {
        font-size: clamp(1.75rem, 5vw, 2.5rem);
    }
    
    .course-card,
    .format-card,
    .why-card {
        padding: 1.75rem;
    }
    
    .card-footer {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .card-footer .btn {
        width: 100%;
    }
    
    .contact-content,
    .contact-form {
        padding: 2rem;
    }
    
    .contact-title {
        font-size: 2rem;
    }
    
    .form-title {
        font-size: 1.75rem;
    }
    
    .form-control {
        padding: 14px 16px;
    }
    
    .submit-btn {
        padding: 16px 24px;
        font-size: 1rem;
    }
    
    .notification {
        max-width: calc(100vw - 40px);
        right: 10px;
        left: 10px;
    }
    
    .lang-selector {
        top: 15px;
        right: 15px;
    }
    
    .footer {
        padding: 3rem 0 1.5rem;
    }
}

/* Print Styles */
@media print {
    .nav,
    .lang-selector,
    .theme-toggle,
    .hero-actions,
    .card-footer,
    .contact-form,
    .footer {
        display: none;
    }
    
    .hero {
        min-height: auto;
        margin-top: 0;
    }
    
    .section {
        padding: 2rem 0;
        break-inside: avoid;
    }
    
    .course-card,
    .format-card,
    .why-card {
        break-inside: avoid;
        border: 1px solid #ddd;
        box-shadow: none;
    }
    
    a {
        color: #000;
        text-decoration: underline;
    }
    
    body {
        background: white;
        color: black;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --text-primary: #000;
        --text-secondary: #333;
        --border-color: #000;
    }
    
    [data-theme="light"] {
        --text-primary: #000;
        --text-secondary: #333;
        --border-color: #000;
    }
}

/* Dark Mode Auto */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) {
        --text-primary: #FFFFFF;
        --text-secondary: #B0B7C3;
        --text-muted: #6C757D;
        
        --bg-dark: #0F172A;
        --bg-darker: #0A0F1C;
        --bg-card: #1E293B;
        --bg-card-hover: #2D3748;
        --border-color: #334155;
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-darker);
}

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-light);
}

/* Selection */
::selection {
    background: rgba(10, 36, 99, 0.3);
    color: var(--text-primary);
}

::-moz-selection {
    background: rgba(10, 36, 99, 0.3);
    color: var(--text-primary);
}

/* Focus Styles */
:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Loading State */
.loading {
    position: relative;
    pointer-events: none;
    opacity: 0.7;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 24px;
    height: 24px;
    border: 3px solid transparent;
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: -12px;
    margin-top: -12px;
}

/* Tooltip */
.tooltip {
    position: relative;
}

.tooltip:hover::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: 8px 12px;
    background: var(--bg-dark);
    color: var(--text-primary);
    font-size: 0.875rem;
    border-radius: var(--radius-sm);
    white-space: nowrap;
    z-index: 1000;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    margin-bottom: 8px;
}

.tooltip:hover::after {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: var(--bg-dark);
    margin-bottom: 2px;
}