/* ══════════════════════════════════════════
   VARIABLES & RESET
══════════════════════════════════════════ */
:root {
    --primary:     #6366f1;
    --primary-dark:#4f46e5;
    --secondary:   #22d3ee;
    --bg:          #0f172a;
    --bg-card:     #1e293b;
    --bg-alt:      #162032;
    --text:        #e2e8f0;
    --text-muted:  #94a3b8;
    --border:      #334155;
    --radius:      12px;
    --shadow:      0 4px 20px rgba(0,0,0,0.3);
    --transition:  0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    font-size: 16px;
}

/* ══════════════════════════════════════════
   NAVIGATION
══════════════════════════════════════════ */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.9rem;
    transition: color var(--transition);
}

.nav-links a:hover {
    color: var(--text);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.5rem;
    cursor: pointer;
}

/* ══════════════════════════════════════════
   HERO
══════════════════════════════════════════ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 100px 2rem 4rem;
    max-width: 1200px;
    margin: 0 auto;
    gap: 4rem;
}

.hero-content {
    flex: 1;
}

.hero-badge {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: rgba(99, 102, 241, 0.15);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 100px;
    font-size: 0.85rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1rem;
}

.highlight {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.hero-description {
    color: var(--text-muted);
    max-width: 540px;
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.btn {
    padding: 0.75rem 1.75rem;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: all var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.hero-stats {
    display: flex;
    gap: 2.5rem;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    display: block;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ══════════════════════════════════════════
   PROFILE CARD
══════════════════════════════════════════ */
.hero-visual {
    flex: 0 0 340px;
}

.profile-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    text-align: center;
}

.profile-img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--primary);
    margin-bottom: 1rem;
}

.profile-info h3 {
    font-size: 1.2rem;
    margin-bottom: 0.25rem;
}

.profile-info p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

.profile-status {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: #22c55e;
    margin-bottom: 1.5rem;
}

.status-dot {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

.server-status {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-muted);
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}

.server-dot {
    width: 6px;
    height: 6px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse 1.5s ease-in-out infinite;
}

/* ══════════════════════════════════════════
   SECTIONS
══════════════════════════════════════════ */
.section {
    padding: 6rem 2rem;
}

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

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

.section-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--primary);
    margin: 0.75rem auto 0;
    border-radius: 2px;
}

/* ══════════════════════════════════════════
   À PROPOS
══════════════════════════════════════════ */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.about-text p {
    color: var(--text-muted);
    margin-bottom: 1.25rem;
}

.about-details {
    margin-top: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.about-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
}

.about-card h3 {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

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

.timeline-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.timeline-dot {
    width: 10px;
    height: 10px;
    background: var(--primary);
    border-radius: 50%;
    margin-top: 6px;
    flex-shrink: 0;
}

.timeline-date {
    font-size: 0.75rem;
    color: var(--primary);
    display: block;
    margin-bottom: 0.25rem;
}

.timeline-content h4 {
    font-size: 0.95rem;
    margin-bottom: 0.1rem;
}

.timeline-content p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ══════════════════════════════════════════
   COMPÉTENCES
══════════════════════════════════════════ */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.skill-category {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.75rem;
}

.skill-category h3 {
    font-size: 1rem;
    margin-bottom: 1.5rem;
}

.skill-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.skill-item span {
    display: block;
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.35rem;
}

.skill-bar {
    background: var(--border);
    border-radius: 4px;
    height: 6px;
    overflow: hidden;
}

.skill-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 4px;
    width: 0%;
    transition: width 1.2s ease;
}

/* ══════════════════════════════════════════
   PROJETS
══════════════════════════════════════════ */
.projects-filter {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 2.5rem;
}

.filter-btn {
    padding: 0.5rem 1.25rem;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-muted);
    border-radius: 100px;
    cursor: pointer;
    font-size: 0.875rem;
    transition: all var(--transition);
}

.filter-btn.active,
.filter-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.75rem;
    transition: all var(--transition);
    cursor: pointer;
}

.project-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.project-tag {
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    background: rgba(99, 102, 241, 0.15);
    color: var(--primary);
    border-radius: 100px;
}

.project-date {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.project-card h3 {
    font-size: 1rem;
    margin-bottom: 0.75rem;
}

.project-card p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 1.25rem;
    line-height: 1.6;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}

.project-tags span {
    font-size: 0.7rem;
    padding: 0.2rem 0.6rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-muted);
}

.project-link {
    font-size: 0.875rem;
    color: var(--primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* ══════════════════════════════════════════
   CERTIFICATIONS
══════════════════════════════════════════ */
.certs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1.5rem;
}

.cert-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    text-align: center;
    transition: all var(--transition);
}

.cert-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
}

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

.cert-card h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.cert-card p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

.cert-date {
    font-size: 0.75rem;
    color: var(--primary);
}

/* ══════════════════════════════════════════
   CONTACT
══════════════════════════════════════════ */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
    align-items: start;
}

.contact-info h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.contact-info p {
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color var(--transition);
}

.contact-item:hover {
    color: var(--primary);
}

.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 0.9rem;
    transition: border-color var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ══════════════════════════════════════════
   FOOTER
══════════════════════════════════════════ */
footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border);
    padding: 2rem;
    text-align: center;
}

.footer-content p {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

/* ══════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════ */
@media (max-width: 768px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 80px 1.5rem 3rem;
    }

    .hero-visual {
        flex: none;
        width: 100%;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .nav-links {
        display: none;
    }

    .nav-toggle {
        display: block;
    }

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

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

/* ══════════════════════════════════════════
   ANIMATIONS
══════════════════════════════════════════ */
@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%       { opacity: 0.6; transform: scale(1.3); }
}

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

.fade-up {
    animation: fadeUp 0.6s ease forwards;
}