/* ===========================
   RESET & ROOT VARIABLES
=========================== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #080c14;
    --bg-secondary: #0d1221;
    --bg-card: rgba(255, 255, 255, 0.04);
    --bg-card-hover: rgba(255, 255, 255, 0.07);
    --border: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(139, 92, 246, 0.4);

    --accent-1: #8b5cf6;
    --accent-2: #6366f1;
    --accent-3: #38bdf8;
    --gradient: linear-gradient(135deg, #8b5cf6 0%, #6366f1 50%, #38bdf8 100%);
    --gradient-text: linear-gradient(135deg, #a78bfa, #818cf8, #7dd3fc);
    --gradient-subtle: linear-gradient(135deg, rgba(139, 92, 246, 0.12), rgba(99, 102, 241, 0.08));

    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #475569;

    --font: 'Plus Jakarta Sans', 'Inter', sans-serif;
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;

    --shadow-glow: 0 0 60px rgba(139, 92, 246, 0.15);
    --shadow-card: 0 4px 32px rgba(0, 0, 0, 0.4);

    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --nav-height: 72px;
}

/* ===========================
   LIGHT THEME
=========================== */
[data-theme="light"] {
    --bg-primary: #f8fafc;
    --bg-secondary: #f1f5f9;
    --bg-card: rgba(0, 0, 0, 0.04);
    --bg-card-hover: rgba(0, 0, 0, 0.07);
    --border: rgba(0, 0, 0, 0.1);
    --border-hover: rgba(139, 92, 246, 0.4);

    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;

    --shadow-glow: 0 0 60px rgba(139, 92, 246, 0.12);
    --shadow-card: 0 4px 32px rgba(0, 0, 0, 0.1);
}

[data-theme="light"] body {
    background-color: var(--bg-primary);
}

[data-theme="light"] .orb {
    opacity: 0.12;
}

[data-theme="light"] .navbar::before {
    background: rgba(248, 250, 252, 0);
}

[data-theme="light"] .navbar.scrolled::before {
    background: rgba(248, 250, 252, 0.92);
    border-bottom-color: rgba(0, 0, 0, 0.08);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .nav-logo-mark {
    background: var(--gradient);
    color: #fff;
}

[data-theme="light"] .nav-logo-name {
    color: #0f172a;
}

[data-theme="light"] .nav-link {
    color: #475569;
}

[data-theme="light"] .nav-link:hover,
[data-theme="light"] .nav-link.active {
    background: rgba(0, 0, 0, 0.05);
    color: #0f172a;
}

[data-theme="light"] ::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

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

/* ===========================
   SCROLLBAR
=========================== */
::-webkit-scrollbar {
    width: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--accent-1);
    border-radius: 3px;
}

/* ===========================
   BACKGROUND EFFECTS
=========================== */
.bg-orbs {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.35;
    animation: orb-float 20s ease-in-out infinite;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, #8b5cf6, transparent 70%);
    top: -200px;
    left: -200px;
    animation-delay: 0s;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #38bdf8, transparent 70%);
    bottom: -150px;
    right: -150px;
    animation-delay: -7s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #6366f1, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -14s;
}

@keyframes orb-float {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    33% {
        transform: translate(30px, -40px) scale(1.05);
    }

    66% {
        transform: translate(-20px, 20px) scale(0.95);
    }
}

/* ===========================
   LAYOUT
=========================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

section {
    position: relative;
    z-index: 1;
}

/* ===========================
   NAVIGATION
=========================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--nav-height);
    transition: var(--transition);
}

.navbar::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(8, 12, 20, 0);
    -webkit-backdrop-filter: blur(0px);
    backdrop-filter: blur(0px);
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

.navbar.scrolled::before {
    background: rgba(8, 12, 20, 0.85);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border-bottom-color: var(--border);
}

.nav-inner {
    height: var(--nav-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    z-index: 1;
}

.nav-logo {
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-logo-mark {
    width: 36px;
    height: 36px;
    background: var(--gradient);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: 800;
    color: white;
    flex-shrink: 0;
}

.nav-logo-name {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 500;
    padding: 7px 10px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    position: relative;
    white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.06);
}

.nav-link.active {
    color: var(--accent-1);
}

.nav-cta {
    display: flex;
    align-items: center;
    gap: 12px;
}

.theme-toggle {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--text-secondary);
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    flex-shrink: 0;
}

.theme-toggle:hover {
    border-color: var(--border-hover);
    color: var(--accent-1);
    background: var(--bg-card-hover);
}

[data-theme="light"] .theme-toggle .ri-sun-line::before {
    content: "\f470";
}

.nav-cta-btn {
    padding: 9px 20px;
    background: var(--gradient);
    color: white;
    text-decoration: none;
    border-radius: 10px;
    font-size: 0.875rem;
    font-weight: 600;
    transition: var(--transition);
}

.nav-cta-btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
    box-shadow: 0 8px 24px rgba(139, 92, 246, 0.4);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    border: 1px solid var(--border);
}

.hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

.hamburger.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.open span:nth-child(2) {
    opacity: 0;
}

.hamburger.open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ===========================
   HERO SECTION
=========================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
}

.hero-wrap {
    max-width: 900px;
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(139, 92, 246, 0.12);
    border: 1px solid rgba(139, 92, 246, 0.25);
    border-radius: 50px;
    padding: 8px 16px;
    font-size: 0.8rem;
    font-weight: 600;
    color: #a78bfa;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 28px;
}

.hero-eyebrow::before {
    content: '';
    width: 6px;
    height: 6px;
    background: #a78bfa;
    border-radius: 50%;
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.5;
        transform: scale(0.8);
    }
}

.hero h1 {
    font-size: clamp(3rem, 7vw, 5.5rem);
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1.05;
    margin-bottom: 24px;
}

.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-sub {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: var(--text-secondary);
    max-width: 580px;
    line-height: 1.7;
    margin-bottom: 40px;
}

.hero-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.hero-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-top: 48px;
    padding-bottom: 80px;
}

.hero-stats {
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-num {
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-top: 4px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    animation: scroll-bounce 2.5s ease-in-out infinite;
}

.hero-scroll i {
    font-size: 1.1rem;
}

@keyframes scroll-bounce {

    0%,
    100% {
        transform: translateX(-50%) translateY(0);
        opacity: 0.6;
    }

    50% {
        transform: translateX(-50%) translateY(8px);
        opacity: 1;
    }
}

/* ===========================
   BUTTONS
=========================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 26px;
    border-radius: 12px;
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    letter-spacing: -0.01em;
}

.btn-primary {
    background: var(--gradient);
    color: white;
    box-shadow: 0 4px 20px rgba(139, 92, 246, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(139, 92, 246, 0.5);
}

.btn-ghost {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.btn-ghost:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.btn-sm {
    padding: 9px 18px;
    font-size: 0.82rem;
    border-radius: 9px;
}

/* ===========================
   SECTION HEADERS
=========================== */
.section {
    padding: 100px 0;
}

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent-1);
    margin-bottom: 16px;
}

.section-tag::before {
    content: '';
    display: block;
    width: 20px;
    height: 2px;
    background: var(--gradient);
    border-radius: 2px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1.1;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 520px;
    line-height: 1.7;
}

/* ===========================
   GLASS CARD
=========================== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    transition: var(--transition);
    overflow: hidden;
}

.card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-card), 0 0 0 1px rgba(139, 92, 246, 0.08);
}

/* ===========================
   ABOUT SECTION
=========================== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 60px;
}

.about-main {
    grid-column: 1 / -1;
    padding: 40px;
}

.about-main h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.about-main p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 28px;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.2);
    color: #a78bfa;
    border-radius: 50px;
    padding: 6px 14px;
    font-size: 0.82rem;
    font-weight: 500;
}

.tag i {
    font-size: 0.9rem;
}

.info-card {
    padding: 28px;
}

.info-card-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-subtle);
    border: 1px solid rgba(139, 92, 246, 0.2);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: var(--accent-1);
    margin-bottom: 16px;
}

.info-card h4 {
    font-weight: 700;
    font-size: 1rem;
    margin-bottom: 6px;
}

.info-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
}

/* ===========================
   SKILLS SECTION
=========================== */
.skills-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 60px;
}

.skill-domain {
    padding: 32px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.skill-domain-header {
    display: flex;
    align-items: center;
    gap: 14px;
}

.skill-domain-icon {
    width: 44px;
    height: 44px;
    background: var(--gradient-subtle);
    border: 1px solid rgba(139, 92, 246, 0.2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-1);
    font-size: 1.2rem;
    flex-shrink: 0;
}

.skill-domain-title {
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

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

.chip {
    padding: 7px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    border-radius: 50px;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
    cursor: default;
}

.chip:hover {
    border-color: rgba(139, 92, 246, 0.4);
    color: var(--text-primary);
    background: rgba(139, 92, 246, 0.08);
}

/* ===========================
   PROJECTS SECTION
=========================== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-top: 60px;
}

.project-card {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    background: var(--bg-card);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    transition: var(--transition);
    text-decoration: none;
    color: inherit;
}

.project-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-6px);
    box-shadow: var(--shadow-card), var(--shadow-glow);
}

.project-image {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.project-card:hover .project-image img {
    transform: scale(1.05);
}

.project-image--placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
}

.placeholder-visual {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    position: relative;
    z-index: 1;
    transition: transform 0.5s ease;
}

.placeholder-icon {
    font-size: 2.6rem;
    color: rgba(255, 255, 255, 0.9);
}

.placeholder-brand {
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    color: rgba(255, 255, 255, 0.75);
}

.project-card:hover .placeholder-visual {
    transform: scale(1.05);
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(8, 12, 20, 0.8) 0%, transparent 60%);
}

.project-type {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 5px 12px;
    background: rgba(8, 12, 20, 0.7);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    color: #f1f5f9;
}

.project-body {
    padding: 28px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.project-meta-row {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.badge {
    padding: 3px 10px;
    border-radius: 50px;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.badge-web {
    background: rgba(99, 102, 241, 0.15);
    color: #818cf8;
    border: 1px solid rgba(99, 102, 241, 0.3);
}

.badge-mobile {
    background: rgba(56, 189, 248, 0.12);
    color: #7dd3fc;
    border: 1px solid rgba(56, 189, 248, 0.3);
}

.badge-year {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    border: 1px solid var(--border);
}

.project-name {
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-top: 4px;
}

.project-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.65;
    flex: 1;
}

.project-footer {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--accent-1);
    text-decoration: none;
    transition: var(--transition);
}

.project-link:hover {
    gap: 10px;
}

.project-stack {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.stack-chip {
    padding: 3px 9px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.72rem;
    color: var(--text-muted);
}

/* ===========================
   TIMELINE (Parcours)
=========================== */
.timeline {
    position: relative;
    margin-top: 60px;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent-1), var(--accent-3), transparent);
    border-radius: 2px;
}

.tl-item {
    position: relative;
    padding-left: 32px;
    padding-bottom: 40px;
}

.tl-item:last-child {
    padding-bottom: 0;
}

.tl-dot {
    position: absolute;
    left: -49px;
    top: 4px;
    width: 18px;
    height: 18px;
    background: var(--gradient);
    border-radius: 50%;
    border: 3px solid var(--bg-primary);
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.5);
}

.tl-card {
    padding: 28px 32px;
    position: relative;
}

.tl-date {
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--accent-1);
    margin-bottom: 8px;
}

.tl-title {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 4px;
    letter-spacing: -0.01em;
}

.tl-sub {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.tl-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.65;
}

.tl-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    background: rgba(249, 115, 22, 0.12);
    border: 1px solid rgba(249, 115, 22, 0.3);
    color: #fdba74;
    border-radius: 20px;
    padding: 2px 9px;
    white-space: nowrap;
    flex-shrink: 0;
}

.tl-stages {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 18px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

.tl-stage-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.tl-stage-body {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.tl-stage-title {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-primary);
}

.tl-stage-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ===========================
   STAGES SECTION
=========================== */
.stages-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-top: 60px;
}

.stage-card {
    padding: 28px 32px;
}

.stage-top {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.stage-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-subtle);
    border: 1px solid rgba(139, 92, 246, 0.2);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: var(--accent-1);
    flex-shrink: 0;
}

.stage-info h4 {
    font-size: 1rem;
    font-weight: 700;
}

.stage-info span {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.stage-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.65;
    margin-bottom: 20px;
}

.stage-links {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.stage-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 14px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.stage-link:hover {
    border-color: rgba(139, 92, 246, 0.4);
    color: var(--accent-1);
    background: rgba(139, 92, 246, 0.06);
}

.stage-link i {
    font-size: 0.9rem;
}

/* ===========================
   CERTIFICATIONS SECTION
=========================== */
.certs-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 60px;
}

.cert-card {
    padding: 28px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
}

.cert-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-subtle);
    border: 1px solid rgba(139, 92, 246, 0.2);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    color: var(--accent-1);
}

.cert-name {
    font-weight: 700;
    font-size: 0.95rem;
    line-height: 1.3;
}

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

.cert-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--accent-1);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    padding: 6px 12px;
    border-radius: 8px;
    border: 1px solid rgba(139, 92, 246, 0.2);
}

.cert-link:hover {
    background: rgba(139, 92, 246, 0.08);
}

/* ===========================
   E4 SECTION
=========================== */
.e4-wrap {
    margin-top: 60px;
}

.e4-card {
    padding: 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    flex-wrap: wrap;
}

.e4-left h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.e4-left p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    max-width: 480px;
    line-height: 1.7;
}

/* ===========================
   CONTACT / FOOTER
=========================== */
.contact {
    padding: 100px 0 60px;
}

.contact-inner {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.contact-inner .section-tag {
    justify-content: center;
}

.contact-inner .section-title {
    margin-bottom: 16px;
}

.contact-inner .section-desc {
    margin: 0 auto 40px;
}

.contact-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    padding: 48px;
    text-align: center;
    margin-top: 48px;
}

.contact-email {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
    background: var(--gradient-subtle);
    border: 1px solid rgba(139, 92, 246, 0.2);
    padding: 14px 28px;
    border-radius: 12px;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.contact-email:hover {
    border-color: var(--accent-1);
    box-shadow: 0 0 30px rgba(139, 92, 246, 0.2);
}

.socials {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.social-btn {
    width: 48px;
    height: 48px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.social-btn:hover {
    border-color: var(--border-hover);
    color: var(--accent-1);
    transform: translateY(-3px);
    background: rgba(139, 92, 246, 0.08);
}

.footer-bottom {
    text-align: center;
    padding: 32px 0;
    border-top: 1px solid var(--border);
    font-size: 0.82rem;
    color: var(--text-muted);
}

/* ===========================
   CONTACT LAYOUT (formulaire)
=========================== */

/* Form wrapper — centré, largeur confortable */
.contact-form-wrap {
    max-width: 680px;
    margin: 48px auto 0;
}

.contact-form-wrap .card {
    padding: 40px;
}

/* Two-column row inside form */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

/* Field group */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 7px;
    margin-bottom: 20px;
}

.form-group label {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

/* Inputs & Textarea */
.form-input,
.form-textarea {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    font-family: var(--font);
    font-size: 0.95rem;
    color: var(--text-primary);
    outline: none;
    transition: var(--transition);
    width: 100%;
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-muted);
}

.form-input:focus,
.form-textarea:focus {
    border-color: var(--accent-1);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.12);
    background: rgba(139, 92, 246, 0.04);
}

.form-input.input-error,
.form-textarea.input-error {
    border-color: #f87171;
    box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 140px;
}

/* Submit button */
.btn-submit {
    width: 100%;
    justify-content: center;
    font-size: 1rem;
    padding: 15px;
    margin-top: 4px;
    gap: 10px;
}

.btn-submit.loading {
    pointer-events: none;
    opacity: 0.75;
}

/* Spinner inside button */
.btn-spinner {
    width: 17px;
    height: 17px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.65s linear infinite;
    flex-shrink: 0;
    will-change: transform; /* promote to GPU layer → no paint on each frame */
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Status messages */
.form-status {
    display: none;
    margin-top: 16px;
    padding: 13px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    gap: 8px;
    align-items: center;
}

.form-status.success {
    display: flex;
    background: rgba(52, 211, 153, 0.1);
    border: 1px solid rgba(52, 211, 153, 0.3);
    color: #34d399;
}

.form-status.error {
    display: flex;
    background: rgba(248, 113, 113, 0.1);
    border: 1px solid rgba(248, 113, 113, 0.3);
    color: #f87171;
}

/* Light theme overrides */
[data-theme="light"] .form-input,
[data-theme="light"] .form-textarea {
    background: rgba(0, 0, 0, 0.03);
    color: var(--text-primary);
}

[data-theme="light"] .form-input:focus,
[data-theme="light"] .form-textarea:focus {
    background: rgba(139, 92, 246, 0.04);
}

[data-theme="light"] .btn-spinner {
    border-color: rgba(255, 255, 255, 0.4);
    border-top-color: #fff;
}

/* ===========================
   RESPONSIVE
=========================== */
@media (max-width: 900px) {
    .about-grid {
        grid-template-columns: 1fr;
    }

    .hero-cards {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-main {
        grid-column: 1;
    }

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

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

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

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

    /* Contact form: empile en une colonne */
    .contact-layout {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .contact-info-card,
    .contact-form-wrap .card {
        padding: 28px 24px;
    }
}

@media (max-width: 768px) {

    .hero-cards {
        grid-template-columns: 1fr 1fr;
    }

    .nav-links,
    .nav-cta {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .nav-links.open {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: rgba(8, 12, 20, 0.97);
        -webkit-backdrop-filter: blur(20px);
        backdrop-filter: blur(20px);
        padding: 24px;
        border-bottom: 1px solid var(--border);
        gap: 8px;
    }

    .nav-cta.open {
        display: flex;
        padding: 0 24px 24px;
        position: fixed;
        top: calc(var(--nav-height) + 200px);
        left: 0;
        right: 0;
        background: rgba(8, 12, 20, 0.97);
    }

    .hero {
        padding: 100px 0 60px;
    }

    .section {
        padding: 70px 0;
    }

    .hero-stats {
        gap: 28px;
    }

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

    .e4-card {
        flex-direction: column;
        text-align: center;
    }

    .contact-card {
        padding: 32px 24px;
    }
}

/* ===========================
   VEILLE TECHNOLOGIQUE
=========================== */
.veille-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 60px;
}

.veille-card {
    padding: 32px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.veille-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.veille-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-subtle);
    border: 1px solid rgba(139, 92, 246, 0.2);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: var(--accent-1);
}

.veille-year {
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.veille-title {
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.veille-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.7;
    flex: 1;
}

.veille-footer {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    padding-top: 8px;
    border-top: 1px solid var(--border);
}

@media (max-width: 768px) {
    .veille-grid {
        grid-template-columns: 1fr;
    }
}

/* ===========================
   BTS SIO SECTION
=========================== */
.bts-intro {
    display: flex;
    gap: 24px;
    align-items: flex-start;
    padding: 32px;
    margin-top: 28px;
    margin-bottom: 32px;
}

.bts-intro-icon {
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    background: var(--gradient-subtle);
    border: 1px solid var(--border-hover);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--accent-1);
}

.bts-intro-text h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.bts-intro-text p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 8px;
}

.bts-intro-text p:last-child {
    margin-bottom: 0;
}

.bts-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 24px;
}

.bts-option {
    position: relative;
    padding: 28px;
    transition: var(--transition);
}

.bts-option--chosen {
    overflow: visible;
    border-color: var(--border-hover);
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.08), rgba(99, 102, 241, 0.05));
    box-shadow: var(--shadow-glow);
}

.bts-chosen-badge {
    position: absolute;
    top: -12px;
    right: 20px;
    background: var(--gradient);
    color: #fff;
    font-size: 0.72rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 4px;
    letter-spacing: 0.05em;
}

.bts-option-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 8px;
}

.bts-option-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    flex-shrink: 0;
}

.bts-option-icon--sisr {
    background: rgba(56, 189, 248, 0.12);
    border: 1px solid rgba(56, 189, 248, 0.25);
    color: var(--accent-3);
}

.bts-option-icon--slam {
    background: rgba(139, 92, 246, 0.15);
    border: 1px solid rgba(139, 92, 246, 0.35);
    color: var(--accent-1);
}

.bts-option-label {
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
}

.bts-option-title {
    font-size: 1.6rem;
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
}

.bts-option--chosen .bts-option-title {
    font-size: 1.8rem;
}

.bts-option-full {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 14px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.bts-option-desc {
    color: var(--text-secondary);
    font-size: 0.92rem;
    line-height: 1.65;
    margin-bottom: 16px;
}

.bts-option-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.bts-why {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    padding: 28px;
    border-color: rgba(139, 92, 246, 0.2);
    background: rgba(139, 92, 246, 0.04);
}

.bts-why-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: rgba(139, 92, 246, 0.15);
    border: 1px solid rgba(139, 92, 246, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: var(--accent-1);
}

.bts-why h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.bts-why p {
    color: var(--text-secondary);
    font-size: 0.92rem;
    line-height: 1.7;
}

@media (max-width: 768px) {
    .bts-intro {
        flex-direction: column;
        gap: 16px;
    }

    .bts-options {
        grid-template-columns: 1fr;
    }

    .bts-option--chosen {
        order: -1;
    }
}

/* ===========================
   PROJECT FILTERS
=========================== */
.projects-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 28px;
    margin-bottom: 36px;
}

.filter-btn {
    padding: 8px 18px;
    border-radius: 50px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--text-secondary);
    font-family: var(--font);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
    background: var(--bg-card-hover);
}

.filter-btn.active {
    background: var(--gradient);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.3);
}

.project-card.hidden {
    display: none;
}

/* ===========================
   ENTRANCE ANIMATIONS
=========================== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 {
    transition-delay: 0.1s;
}

.reveal-delay-2 {
    transition-delay: 0.2s;
}

.reveal-delay-3 {
    transition-delay: 0.3s;
}

.reveal-delay-4 {
    transition-delay: 0.4s;
}