:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --text-dark: #2c3e50;
    --text-light: #ecf0f1;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 15px 40px rgba(0, 0, 0, 0.15);
    --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-alt: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Cairo', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
}

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

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    transition: width 0.3s ease;
}

.nav-links a:hover::after {
    width: 100%;
}

.lang-toggle {
    background: var(--gradient);
    color: white;
    border: none;
    padding: 0.5rem 1.5rem;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    transition: transform 0.3s ease;
}

.lang-toggle:hover {
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--gradient);
    color: white;
    padding-top: 80px;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="rgba(255,255,255,0.1)" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,138.7C960,139,1056,117,1152,101.3C1248,85,1344,75,1392,69.3L1440,64L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
    opacity: 0.3;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(255,255,255,0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(255,255,255,0.1) 0%, transparent 50%);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 300;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-tags {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2rem;
}

.tag {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 0.5rem 1.5rem;
    border-radius: 25px;
    font-size: 0.9rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.hero-description {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 3rem;
    line-height: 1.8;
    opacity: 0.95;
}

.cta-button {
    display: inline-block;
    background: white;
    color: var(--primary-color);
    padding: 1rem 3rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

/* Animations */
.fade-in {
    animation: fadeIn 1s ease-out;
}

.fade-in-delay {
    animation: fadeIn 1s ease-out 0.3s backwards;
}

.fade-in-delay-2 {
    animation: fadeIn 1s ease-out 0.6s backwards;
}

.fade-in-delay-3 {
    animation: fadeIn 1s ease-out 0.9s backwards;
}

.fade-in-delay-4 {
    animation: fadeIn 1s ease-out 1.2s backwards;
}

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

/* Section Styling */
section {
    padding: 6rem 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
    display: block;
    width: 100%;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient);
    border-radius: 2px;
}

/* About Section */
.about {
    background: var(--bg-light);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    align-items: center;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 2;
    margin-bottom: 1.5rem;
    color: #555;
    text-align: right;
}

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

.stat-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 1rem;
    color: #666;
    margin-top: 0.5rem;
}

/* Timeline */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    right: 50%;
    transform: translateX(50%);
    width: 3px;
    height: 100%;
    background: var(--gradient);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    display: flex;
    justify-content: flex-end;
    padding-right: calc(50% + 40px);
}

.timeline-item:nth-child(even) {
    justify-content: flex-start;
    padding-right: 0;
    padding-left: calc(50% + 40px);
}

.timeline-dot {
    position: absolute;
    right: 50%;
    transform: translateX(50%);
    width: 20px;
    height: 20px;
    background: white;
    border: 4px solid #667eea;
    border-radius: 50%;
    z-index: 1;
}

.timeline-content {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
    width: 100%;
    transition: all 0.3s ease;
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.timeline-content h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    text-align: right;
}

.degree-detail {
    color: #666;
    font-size: 0.95rem;
    margin-bottom: 1rem;
    text-align: right;
}

.timeline-badge {
    display: inline-block;
    background: var(--gradient);
    color: white;
    padding: 0.3rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

/* Training Section */
.training {
    background: var(--bg-light);
}

.training-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.training-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border-top: 4px solid transparent;
}

.training-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    border-top-color: #667eea;
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.training-card h3 {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    text-align: right;
}

.training-card p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 1rem;
    font-size: 0.95rem;
    text-align: right;
}

.institution {
    display: block;
    color: #999;
    font-size: 0.85rem;
    font-style: italic;
    text-align: right;
}

/* Contact Section */
.contact {
    text-align: center;
}

.contact-description {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: white;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    color: var(--primary-color);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    font-weight: 600;
}

.social-link:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    background: var(--gradient);
    color: white;
}

.social-link svg {
    width: 24px;
    height: 24px;
}

/* Footer */
.footer {
    background: var(--primary-color);
    color: white;
    text-align: center;
    padding: 2rem 0;
}

/* Language-specific alignment */
[dir="ltr"] .training-card h3,
[dir="ltr"] .training-card p,
[dir="ltr"] .institution {
    text-align: left;
}

[dir="ltr"] .timeline-content h3,
[dir="ltr"] .timeline-content .degree-detail {
    text-align: left;
}

[dir="ltr"] .about-text p {
    text-align: left;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .hero-tags {
        flex-direction: column;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .timeline::before {
        right: 20px;
    }

    .timeline-item,
    .timeline-item:nth-child(even) {
        padding-right: 0;
        padding-left: 60px;
        justify-content: flex-start;
    }

    .timeline-dot {
        right: auto;
        left: 11px;
        transform: none;
    }

    .training-grid {
        grid-template-columns: 1fr;
    }

    .social-links {
        flex-direction: column;
        align-items: stretch;
        padding: 0 2rem;
    }

    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .container {
        padding: 0 15px;
    }

    section {
        padding: 4rem 0;
    }
}