/* ==========================================================================
   CV INTERACTIF — VARIABLES & DESIGN SYSTEM
   ========================================================================== */
:root {
    --bg-main: #0B0F17;
    --text-primary: #F8FAFC;
    --text-secondary: #94A3B8;
    --primary: #3B82F6;
    --primary-hover: #2563EB;
    --accent: #8B5CF6;
    --accent2: #06B6D4;
    --border: rgba(255, 255, 255, 0.08);
    --pill-bg: rgba(255, 255, 255, 0.06);

    --radius-lg: 20px;
    --radius-md: 12px;
    --radius-sm: 8px;

    --glass-bg: rgba(15, 23, 42, 0.65);
    --glass-border: rgba(255, 255, 255, 0.1);
    --nav-bg-scrolled: rgba(11, 15, 23, 0.85);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 12px 32px -4px rgba(0, 0, 0, 0.4);

    --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="light"] {
    --bg-main: #FAFBFC;
    --text-primary: #0F172A;
    --text-secondary: #64748B;
    --primary: #2563EB;
    --primary-hover: #1D4ED8;
    --accent: #7C3AED;
    --border: #E2E8F0;
    --pill-bg: #F1F5F9;

    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(226, 232, 240, 0.8);
    --nav-bg-scrolled: rgba(255, 255, 255, 0.85);
    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
    --shadow-md: 0 12px 24px -4px rgba(15, 23, 42, 0.06);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    scrollbar-width: none;
    -ms-overflow-style: none;
}
html::-webkit-scrollbar { display: none; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    transition: background-color var(--transition-smooth), color var(--transition-smooth);
    scrollbar-width: none;
    -ms-overflow-style: none;
}
body::-webkit-scrollbar { display: none; width: 0; height: 0; }

/* ==========================================================================
   LAYOUT
   ========================================================================== */
.container { max-width: 1140px; margin: 0 auto; padding: 0 24px; }
.section { padding: 100px 0; }
.section-header { margin-bottom: 56px; }
.section-title { font-size: 2.25rem; font-weight: 700; letter-spacing: -0.02em; color: var(--text-primary); margin-bottom: 12px; }
.section-subtitle { font-size: 1.125rem; color: var(--text-secondary); font-weight: 400; }
.text-center { text-align: center; }

/* Animated background */
.glow-bg { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; z-index: -1; overflow: hidden; pointer-events: none; }
.blob { position: absolute; border-radius: 50%; filter: blur(100px); opacity: 0.25; animation: float 20s infinite ease-in-out alternate; }
[data-theme="light"] .blob { opacity: 0.35; }
.blob-1 { top: -10%; right: -5%; width: 500px; height: 500px; background: radial-gradient(circle, var(--primary) 0%, transparent 70%); }
.blob-2 { bottom: 10%; left: -10%; width: 600px; height: 600px; background: radial-gradient(circle, var(--accent) 0%, transparent 70%); }
@keyframes float { 0% { transform: translate(0, 0) scale(1); } 100% { transform: translate(40px, 50px) scale(1.1); } }

/* Glass card */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth), background-color var(--transition-smooth);
}
.glass-card:hover { box-shadow: var(--shadow-md); }

/* ==========================================================================
   BUTTONS & BADGES
   ========================================================================== */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    gap: 8px; padding: 14px 28px; font-size: 0.95rem; font-weight: 600;
    border-radius: var(--radius-md); text-decoration: none;
    transition: all var(--transition-fast); cursor: pointer; border: none;
}
.btn-primary { background-color: var(--primary); color: #FFFFFF; box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3); }
.btn-primary:hover { background-color: var(--primary-hover); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4); }
.btn-secondary { background-color: var(--pill-bg); color: var(--text-primary); border: 1px solid var(--border); }
.btn-secondary:hover { background-color: rgba(255, 255, 255, 0.1); }
[data-theme="light"] .btn-secondary:hover { background-color: #E2E8F0; }
.btn-sm { padding: 10px 18px; font-size: 0.875rem; }

.theme-toggle-btn {
    background: var(--pill-bg); border: 1px solid var(--border); color: var(--text-primary);
    width: 40px; height: 40px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; transition: all var(--transition-fast);
}
.theme-toggle-btn:hover { transform: scale(1.05); border-color: var(--primary); }
.sun-icon { display: block; }
.moon-icon { display: none; }
[data-theme="light"] .sun-icon { display: none; }
[data-theme="light"] .moon-icon { display: block; }

.badge {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 6px 14px; background: rgba(59, 130, 246, 0.12);
    border: 1px solid rgba(59, 130, 246, 0.25); border-radius: 100px;
    font-size: 0.85rem; font-weight: 500; color: var(--primary); margin-bottom: 24px;
}
.badge-dot { width: 6px; height: 6px; background-color: #22C55E; border-radius: 50%; animation: pulse-dot 2s infinite; }
@keyframes pulse-dot { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.5; transform: scale(0.8); } }

/* ==========================================================================
   NAVBAR
   ========================================================================== */
.navbar { position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; padding: 20px 0; transition: all var(--transition-fast); }
.navbar.scrolled { padding: 12px 0; background: var(--nav-bg-scrolled); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border-bottom: 1px solid var(--border); box-shadow: var(--shadow-sm); }
.nav-container { display: flex; align-items: center; justify-content: space-between; }
.brand-logo { font-size: 1.4rem; font-weight: 800; color: var(--text-primary); text-decoration: none; letter-spacing: -0.03em; }
.logo-dot { color: var(--primary); }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-link { text-decoration: none; color: var(--text-secondary); font-weight: 500; font-size: 0.95rem; transition: color var(--transition-fast); }
.nav-link:hover, .nav-link.active { color: var(--text-primary); }
.nav-actions { display: flex; align-items: center; gap: 14px; }
.burger-btn { display: none; flex-direction: column; justify-content: space-between; width: 24px; height: 18px; background: none; border: none; cursor: pointer; }
.burger-btn span { width: 100%; height: 2px; background-color: var(--text-primary); transition: all 0.3s ease; }

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section { min-height: 100vh; display: flex; align-items: center; padding: 140px 0 80px; }

.hero-container {
    display: grid;
    grid-template-columns: auto 1.4fr 0.6fr;
    gap: 60px;
    align-items: center;
}

/* Photo */
.hero-left { display: flex; align-items: center; justify-content: center; }
.hero-photo-wrap {
    position: relative;
    width: 140px;
    height: 140px;
    flex-shrink: 0;
}
.hero-photo {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    object-fit: cover;
    object-position: center top;
    position: relative;
    z-index: 1;
    border: 3px solid var(--glass-border);
}
.hero-photo-ring {
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    z-index: 0;
    opacity: 0.7;
    animation: ring-spin 8s linear infinite;
}
@keyframes ring-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}
/* Mask the ring behind the photo */
.hero-photo-wrap::after {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: 50%;
    background: var(--bg-main);
    z-index: 0;
    transition: background-color var(--transition-smooth);
}
.hero-photo { z-index: 2; }
.hero-photo-ring { z-index: 1; }

.hero-title { font-size: 3rem; line-height: 1.1; font-weight: 800; letter-spacing: -0.03em; margin-bottom: 20px; }
.gradient-text { background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero-subtitle { font-size: 1.1rem; color: var(--text-secondary); line-height: 1.6; margin-bottom: 32px; }
.hero-subtitle strong { color: var(--text-primary); }

.hero-contact { display: flex; flex-wrap: wrap; gap: 10px; }
.contact-chip {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 9px 16px; background: var(--pill-bg); border: 1px solid var(--border);
    border-radius: 100px; font-size: 0.85rem; font-weight: 500;
    color: var(--text-secondary); text-decoration: none; transition: all var(--transition-fast);
}
.contact-chip:hover { color: var(--text-primary); border-color: var(--primary); transform: translateY(-2px); }

.hero-stats { display: flex; flex-direction: column; gap: 16px; }
.stat-card { padding: 24px 20px; text-align: center; }
.stat-number { font-size: 2.5rem; font-weight: 800; color: var(--text-primary); letter-spacing: -0.03em; }
.stat-label { display: block; margin-top: 6px; font-size: 0.85rem; color: var(--text-secondary); font-weight: 500; }

/* ==========================================================================
   PROFIL
   ========================================================================== */
.profil-card { padding: 40px; font-size: 1.1rem; color: var(--text-secondary); line-height: 1.8; }
.profil-card strong { color: var(--text-primary); font-weight: 600; }

/* ==========================================================================
   COMPÉTENCES
   ========================================================================== */
.skill-filters { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; margin-bottom: 40px; }
.filter-btn { padding: 10px 20px; background: var(--pill-bg); border: 1px solid var(--border); border-radius: 100px; font-size: 0.9rem; font-weight: 600; color: var(--text-secondary); cursor: pointer; transition: all var(--transition-fast); }
.filter-btn:hover { color: var(--text-primary); border-color: var(--primary); }
.filter-btn.active { background: var(--primary); color: #FFFFFF; border-color: var(--primary); box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3); }

.skills-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 18px; }
.skill-card { padding: 24px; display: flex; flex-direction: column; align-items: center; gap: 10px; text-align: center; transition: all var(--transition-smooth); }
.skill-card.hidden { display: none; }
.skill-card:hover { transform: translateY(-4px); border-color: var(--primary); }
.skill-icon { font-size: 1.8rem; }
.skill-name { font-weight: 700; font-size: 0.95rem; }
.skill-sub { font-size: 0.78rem; color: var(--text-secondary); }
.skill-bar { width: 100%; height: 5px; background: var(--pill-bg); border-radius: 100px; overflow: hidden; }
.skill-fill { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--primary), var(--accent)); border-radius: 100px; transition: width 1s cubic-bezier(0.16, 1, 0.3, 1); }

/* ==========================================================================
   EXPÉRIENCE (TIMELINE)
   ========================================================================== */
.timeline { position: relative; max-width: 760px; margin: 0 auto; padding-left: 32px; }
.timeline::before { content: ""; position: absolute; left: 8px; top: 0; bottom: 0; width: 2px; background: linear-gradient(180deg, var(--primary), var(--accent)); opacity: 0.4; }
.timeline-item { position: relative; padding: 28px 32px; margin-bottom: 24px; }
.timeline-dot { position: absolute; left: -32px; top: 36px; width: 12px; height: 12px; border-radius: 50%; background: var(--primary); border: 2px solid var(--bg-main); box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.25); }
.timeline-dot.accent { background: linear-gradient(135deg, var(--primary), var(--accent)); box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.3); }
.timeline-date { font-size: 0.82rem; font-weight: 600; color: var(--primary); letter-spacing: 0.02em; margin-bottom: 8px; display: block; }
.timeline-title-row { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; flex-wrap: wrap; }
.timeline-title { font-size: 1.2rem; font-weight: 700; }
.timeline-badge { font-size: 0.72rem; font-weight: 700; padding: 3px 10px; border-radius: 100px; background: rgba(59, 130, 246, 0.15); color: var(--primary); border: 1px solid rgba(59, 130, 246, 0.3); letter-spacing: 0.04em; text-transform: uppercase; }
.timeline-badge.secondary { background: rgba(148, 163, 184, 0.1); color: var(--text-secondary); border-color: var(--border); }
.timeline-text { color: var(--text-secondary); font-size: 0.97rem; margin-bottom: 14px; }
.timeline-text strong { color: var(--text-primary); }
.timeline-tags { display: flex; flex-wrap: wrap; gap: 8px; }

/* ==========================================================================
   FORMATION
   ========================================================================== */
.formation-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; max-width: 760px; margin: 0 auto 40px; }
.formation-card { padding: 28px 32px; display: flex; align-items: flex-start; gap: 20px; }
.formation-icon { font-size: 2rem; flex-shrink: 0; }
.formation-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 4px; }
.formation-org { display: block; font-size: 0.9rem; font-weight: 600; color: var(--primary); margin-bottom: 6px; }
.formation-text { color: var(--text-secondary); font-size: 0.92rem; }

/* Langues */
.langues-section { max-width: 760px; margin: 0 auto; }
.langues-title { font-size: 1.25rem; font-weight: 700; margin-bottom: 20px; }
.langues-grid { display: flex; gap: 20px; flex-wrap: wrap; }
.langue-item { display: flex; align-items: center; gap: 12px; padding: 14px 22px; background: var(--glass-bg); border: 1px solid var(--glass-border); border-radius: var(--radius-md); }
.langue-flag { font-size: 1.4rem; }
.langue-name { font-weight: 600; font-size: 0.95rem; }
.langue-level { font-size: 0.82rem; color: var(--text-secondary); }

/* ==========================================================================
   PROJETS
   ========================================================================== */
.cv-projects-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.project-card { padding: 28px; display: flex; flex-direction: column; align-items: flex-start; gap: 12px; position: relative; overflow: hidden; }
.project-card:hover { border-color: rgba(59, 130, 246, 0.4); transform: translateY(-4px); }
.project-tag { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; font-weight: 700; color: var(--primary); }
.project-tag.ai-tag { color: var(--accent); }
.project-title { font-size: 1.35rem; font-weight: 700; }
.project-description { color: var(--text-secondary); font-size: 0.95rem; flex: 1; }
.project-tech-list { display: flex; flex-wrap: wrap; gap: 8px; }
.tech-pill { padding: 4px 12px; background: var(--pill-bg); border: 1px solid var(--border); border-radius: 100px; font-size: 0.78rem; font-weight: 500; color: var(--text-secondary); }

/* ==========================================================================
   INTÉRÊTS
   ========================================================================== */
.interets-section { padding-top: 0; }
.interets-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; }
.interet-card { padding: 24px 28px; display: flex; align-items: flex-start; gap: 18px; }
.interet-card:hover { transform: translateY(-3px); border-color: var(--primary); }
.interet-icon { font-size: 1.8rem; flex-shrink: 0; }
.interet-title { font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.interet-text { font-size: 0.88rem; color: var(--text-secondary); }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer { padding: 40px 0; border-top: 1px solid var(--border); background: var(--bg-main); transition: background-color var(--transition-smooth); }
.footer-container { display: flex; justify-content: space-between; align-items: center; }
.footer-text, .footer-copy { font-size: 0.875rem; color: var(--text-secondary); }

/* ==========================================================================
   ANIMATIONS
   ========================================================================== */
.animate-on-scroll { opacity: 0; transform: translateY(30px); transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1); }
.animate-on-scroll.is-visible { opacity: 1; transform: translateY(0); }
.delay-1 { transition-delay: 0.15s; }
.delay-2 { transition-delay: 0.3s; }

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 1024px) {
    .hero-container { grid-template-columns: auto 1fr; grid-template-rows: auto auto; }
    .hero-stats { flex-direction: row; grid-column: 1 / -1; justify-content: center; }
    .stat-card { flex: 1; max-width: 180px; }
}

@media (max-width: 768px) {
    .section { padding: 80px 0; }
    .hero-container { grid-template-columns: 1fr; text-align: center; }
    .hero-left { justify-content: center; }
    .hero-title { font-size: 2.4rem; }
    .hero-contact { justify-content: center; }
    .hero-stats { flex-direction: row; flex-wrap: wrap; justify-content: center; grid-column: auto; }

    .burger-btn { display: flex; }
    .nav-links { position: fixed; top: 70px; left: 0; width: 100%; background: var(--bg-main); flex-direction: column; padding: 24px; border-bottom: 1px solid var(--border); transform: translateY(-150%); transition: transform 0.3s ease; box-shadow: var(--shadow-md); }
    .nav-links.active { transform: translateY(0); }

    .cv-projects-grid { grid-template-columns: 1fr; }
    .formation-grid { grid-template-columns: 1fr; }
    .formation-card { flex-direction: column; }
    .langues-grid { flex-direction: column; }
    .footer-container { flex-direction: column; gap: 16px; text-align: center; }
}