:root {
    --bg-primary: #0f0f23;
    --bg-secondary: rgba(255, 255, 255, 0.05);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.8);
    --primary: #6366f1;
    --accent: #ec4899;
    --success: #10b981;
    --humanitarian: #ef4444;
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --shadow: 0 25px 45px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 35px 60px rgba(0, 0, 0, 0.15);
    --transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    --font-primary: 'Inter', sans-serif;
    --font-secondary: 'Poppins', sans-serif;
}

[data-theme="light"] {
    --bg-primary: #f8fafc;
    --bg-secondary: rgba(0, 0, 0, 0.03);
    --text-primary: #0f0f23;
    --text-secondary: rgba(0, 0, 0, 0.7);
    --glass-bg: rgba(255, 255, 255, 0.8);
    --glass-border: rgba(0, 0, 0, 0.1);
}

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

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

.theme-toggle {
    position: fixed;
    top: 2rem;
    right: 2rem;
    z-index: 1000;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.theme-toggle:hover {
    transform: scale(1.1) rotate(180deg);
    box-shadow: var(--shadow);
}

.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 999;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    padding: 1rem 0;
    transition: var(--transition);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h2 {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-family: var(--font-secondary);
    font-weight: 700;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: var(--transition);
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transition: var(--transition);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: var(--transition);
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 0 2rem;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    z-index: 2;
}

.hero-title {
    font-family: var(--font-secondary);
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--text-primary), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    opacity: 0;
    animation: fadeInUp 1s 0.5s forwards;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 3rem;
    opacity: 0.9;
    opacity: 0;
    animation: fadeInUp 1s 0.8s forwards;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp 1s 1s forwards;
}

.btn-primary, .btn-secondary {
    padding: 1rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    position: relative;
    overflow: hidden;
}

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

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

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--glass-border);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: var(--glass-bg);
    transform: scale(1.05);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(236, 72, 153, 0.1) 50%, rgba(16, 185, 129, 0.1) 100%);
    z-index: 1;
}

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

.section {
    padding: 8rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.section-title {
    font-family: var(--font-secondary);
    font-size: clamp(2.5rem, 5vw, 4rem);
    text-align: center;
    margin-bottom: 4rem;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

.service-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 3rem 2rem;
    text-align: center;
    border: 1px solid var(--glass-border);
    transition: var(--transition);
    height: 100%;
}

.service-card:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: var(--shadow-hover);
}

.card-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
}

.service-card h3 {
    font-family: var(--font-secondary);
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.portfolio-filters {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.8rem 1.5rem;
    border: 2px solid var(--glass-border);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn.active, .filter-btn:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.portfolio-item {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    cursor: pointer;
    transition: var(--transition);
}

.portfolio-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: var(--transition);
}

.portfolio-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, var(--glass-bg));
    padding: 2rem;
    transform: translateY(100%);
    transition: var(--transition);
}

.portfolio-item:hover .portfolio-overlay {
    transform: translateY(0);
}

.portfolio-item:hover img {
    transform: scale(1.1);
}

.portfolio-item:hover {
    box-shadow: var(--shadow);
}

.youtube-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;

  padding: 12px 18px;
  margin-top: 10px;

  color: #fff;
  font-weight: 600;
  font-size: 14px;
  text-decoration: none;

  border-radius: 12px; /* coins arrondis */
  background: linear-gradient(135deg, #ff0000, #ff5e00); /* rouge YouTube + orange */

  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15); /* ombre légère */

  transition: all 0.3s ease;
  cursor: pointer;
}

.youtube-button:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.25);
  background: linear-gradient(135deg, #cc0000, #ff3d00);
}

.youtube-button:active {
  transform: scale(0.98);
}

/* À Propos Styles */
.about-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.about-timeline {
    position: relative;
}

.about-timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--primary);
    opacity: 0.3;
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    padding-left: 60px;
}

.timeline-year {
    position: absolute;
    left: 0;
    top: 0;
    background: var(--primary);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
}

.timeline-content h4 {
    font-family: var(--font-secondary);
    margin-bottom: 0.5rem;
    color: var(--primary);
}

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

.about-mv {
    display: flex;
    gap: 2rem;
}

.mv-card {
    flex: 1;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    padding: 2.5rem;
    border-radius: 20px;
    text-align: center;
    border: 1px solid var(--glass-border);
    transition: var(--transition);
}

.mv-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow);
}

.mv-card i {
    font-size: 3.5rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.mv-card h3 {
    font-family: var(--font-secondary);
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.about-values-section {
    margin: 4rem 0;
}

.values-title {
    text-align: center;
    font-family: var(--font-secondary);
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--primary);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.value-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    padding: 2.5rem 2rem;
    border-radius: 20px;
    text-align: center;
    border: 1px solid var(--glass-border);
    transition: var(--transition);
    height: 100%;
}

.value-card:hover {
    transform: translateY(-15px);
    box-shadow: var(--shadow);
}

.value-card i {
    font-size: 3rem;
    color: var(--accent);
    margin-bottom: 1rem;
}

.value-card h4 {
    font-family: var(--font-secondary);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.about-stats-section {
    padding: 4rem 0;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-radius: 30px;
    margin: 4rem 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat-item {
    position: relative;
}

.stat-number {
    display: block;
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-family: var(--font-secondary);
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.1rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Responsive About */
@media (max-width: 768px) {
    .about-container,
    .about-mv {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .timeline-item {
        padding-left: 40px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info h3 {
    font-family: var(--font-secondary);
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact-item {
    margin-bottom: 1rem;
    opacity: 0.9;
}

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

.contact-form input,
.contact-form textarea {
    padding: 1.5rem;
    border: 1px solid var(--glass-border);
    border-radius: 15px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    color: var(--text-primary);
    font-family: inherit;
    transition: var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.footer {
    background: var(--bg-secondary);
    padding: 4rem 2rem 2rem;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3, .footer-section h4 {
    margin-bottom: 1rem;
    font-family: var(--font-secondary);
}

.footer-section ul {
    list-style: none;
}

.footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--primary);
}

.socials {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.socials a {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: var(--glass-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.socials a:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-img {
    height: 40px;
    width: auto;
    border-radius: 8px;
    transition: var(--transition);
}

.logo:hover .logo-img {
    transform: scale(1.05);
}

@media (max-width: 768px) {
    .logo-img {
        height: 35px;
    }
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--glass-border);
    opacity: 0.8;
}

/* Responsive */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: var(--glass-bg);
        backdrop-filter: blur(20px);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        padding: 2rem 0;
        gap: 1rem;
    }

    .nav-menu.active {
        left: 0;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .stats {
        justify-content: center;
    }

    .portfolio-filters {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .section {
        padding: 4rem 1rem;
    }

    .hero {
        padding: 0 1rem;
        text-align: center;
    }
}

/* Scroll animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(50px); }
    to { opacity: 1; transform: translateY(0); }
}

.section {
    opacity: 0;
    animation: fadeIn 1s forwards;
}