/* styles.css */

/* ===== VARIABLES CSS ===== */
:root {
    /* Couleurs mode clair */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --text-primary: #1a1a1a;
    --text-secondary: #4a5568;
    --text-tertiary: #718096;
    --accent-primary: #3b82f6;
    --accent-secondary: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.12);
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Spacing */
    --section-padding: 5rem 0;
    --container-padding: 0 1.5rem;
}

/* Mode sombre */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --border-color: #334155;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.6);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color var(--transition-base), color var(--transition-base);
    overflow-x: hidden;
}

/* ===== TYPOGRAPHIE ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

/* ===== UTILITAIRES ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--container-padding);
}

.section {
    padding: var(--section-padding);
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.section.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.section-title {
    text-align: center;
    margin-bottom: 1rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 3rem;
    font-size: 1.1rem;
}

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

/* ===== BOUTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

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

.btn-linkedin {
    background: #0077b5;
    color: white;
}

.btn-linkedin:hover {
    background: #005885;
    transform: translateY(-2px);
}

/* ===== HEADER / NAVIGATION ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-link {
    position: relative;
    color: var(--text-secondary);
    font-weight: 500;
    padding: 0.5rem 0;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gradient);
    transition: width var(--transition-base);
}

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

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

.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    color: var(--text-primary);
    transition: transform var(--transition-fast);
}

.theme-toggle:hover {
    transform: rotate(20deg);
}

.sun-icon,
.moon-icon {
    display: none;
}

[data-theme="light"] .sun-icon {
    display: block;
}

[data-theme="dark"] .moon-icon {
    display: block;
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 0.3rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-base);
}

/* ===== HERO ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 80px;
    overflow: hidden;
}

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

.hero-title {
    margin-bottom: 1rem;
    animation: fadeInUp 0.8s ease;
}

.hero-subtitle {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

.rotating-text {
    display: inline-block;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    min-width: 200px;
    font-weight: 700;
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    animation: fadeInUp 0.8s ease 0.4s backwards;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.6s backwards;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.05;
    background:
        radial-gradient(circle at 20% 50%, var(--accent-primary) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, var(--accent-secondary) 0%, transparent 50%);
    animation: pulse 10s ease-in-out infinite;
}

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

@keyframes pulse {
    0%, 100% { opacity: 0.05; }
    50% { opacity: 0.1; }
}

/* ===== BIOGRAPHIE ===== */
.biography {
    background: var(--bg-secondary);
}

.biography-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.biography-text p {
    margin-bottom: 1.5rem;
    text-align: justify;
}

.timeline {
    position: relative;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--accent-gradient);
}

.timeline-item {
    position: relative;
    margin-bottom: 2rem;
    padding-left: 1.5rem;
    opacity: 0;
    transform: translateX(-20px);
    transition: all 0.5s ease;
}

.timeline-item.is-visible {
    opacity: 1;
    transform: translateX(0);
}

.timeline-marker {
    position: absolute;
    left: -2.5rem;
    top: 0;
    width: 1rem;
    height: 1rem;
    border-radius: 50%;
    background: var(--accent-primary);
    border: 3px solid var(--bg-primary);
    box-shadow: 0 0 0 4px var(--bg-secondary);
}

.timeline-item::before {
    content: attr(data-year);
    position: absolute;
    left: -7rem;
    top: -0.25rem;
    font-weight: 700;
    color: var(--accent-primary);
    font-size: 0.875rem;
}

.timeline-content h3 {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.timeline-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ===== PARCOURS & COMPÉTENCES ===== */
.skills-filters {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.5rem 1.5rem;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 2rem;
    cursor: pointer;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

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

.skills-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.column-title {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.experience-card {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 0.75rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

.experience-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 0.5rem;
}

.card-header h4 {
    color: var(--text-primary);
}

.date {
    font-size: 0.875rem;
    color: var(--accent-primary);
    font-weight: 600;
}

.role {
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.missions {
    list-style: none;
    padding-left: 0;
}

.missions li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.missions li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
    font-weight: 700;
}

.skill-category {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 0.75rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
    opacity: 1;
    transform: scale(1);
}

.skill-category.hidden {
    display: none;
}

.skill-category h4 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.skill-category svg {
    color: var(--accent-primary);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-tag {
    display: inline-block;
    padding: 0.4rem 0.875rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 2rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.skill-tag:hover {
    background: var(--accent-gradient);
    color: white;
    border-color: transparent;
    transform: translateY(-2px);
}

/* ===== RÉALISATIONS ===== */
.projects {
    background: var(--bg-secondary);
}

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

.project-filter {
    padding: 0.5rem 1.5rem;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: 2rem;
    cursor: pointer;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.project-filter:hover,
.project-filter.active {
    background: var(--accent-gradient);
    color: white;
    border-color: transparent;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--bg-primary);
    border-radius: 1rem;
    padding: 2rem;
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
    opacity: 1;
    transform: scale(1);
}

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

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

.project-type {
    display: inline-block;
    padding: 0.3rem 0.875rem;
    background: var(--accent-gradient);
    color: white;
    border-radius: 2rem;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.project-title {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.project-summary {
    margin-bottom: 1.5rem;
}

.car-item {
    margin-bottom: 1rem;
}

.car-item strong {
    color: var(--accent-primary);
    display: block;
    margin-bottom: 0.25rem;
    font-size: 0.875rem;
}

.car-item p {
    font-size: 0.95rem;
    margin: 0;
    line-height: 1.5;
}

.btn-details {
    width: 100%;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 0.5rem;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-primary);
    transition: all var(--transition-base);
}

.btn-details:hover {
    background: var(--accent-gradient);
    color: white;
    border-color: transparent;
}

/* ===== MODAL ===== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal.active {
    display: flex;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    position: relative;
    background: var(--bg-primary);
    border-radius: 1rem;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    animation: slideUp 0.3s ease;
}

.modal-close {
    position: sticky;
    top: 0;
    right: 0;
    float: right;
    background: var(--bg-secondary);
    border: none;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    transition: all var(--transition-base);
    margin: 1rem 1rem 0 0;
    z-index: 1;
}

.modal-close:hover {
    background: var(--error);
    color: white;
    transform: rotate(90deg);
}

.modal-body {
    padding: 2rem;
}

.modal-body h2 {
    margin-bottom: 1rem;
}

.modal-body h3 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--accent-primary);
}

.modal-body ul {
    list-style: none;
    padding-left: 0;
}

.modal-body ul li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.75rem;
}

.modal-body ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: 700;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== CV & LINKEDIN ===== */
.cv-section {
    background: var(--bg-primary);
}

.cv-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.cv-intro {
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

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

.cv-note {
    padding: 1rem;
    background: var(--bg-secondary);
    border-left: 4px solid var(--accent-primary);
    border-radius: 0.5rem;
    text-align: left;
    font-size: 0.95rem;
}

.cv-note code {
    background: var(--bg-tertiary);
    padding: 0.2rem 0.5rem;
    border-radius: 0.25rem;
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
}

/* ===== CONTACT ===== */
.contact {
    background: var(--bg-secondary);
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.required {
    color: var(--error);
}

.form-control {
    width: 100%;
    padding: 0.875rem;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 1rem;
    font-family: inherit;
    color: var(--text-primary);
    transition: all var(--transition-base);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-control.error {
    border-color: var(--error);
}

.form-control.success {
    border-color: var(--success);
}

.error-message {
    display: block;
    margin-top: 0.5rem;
    color: var(--error);
    font-size: 0.875rem;
    min-height: 1.25rem;
}

textarea.form-control {
    resize: vertical;
    min-height: 150px;
}

.btn-submit {
    width: 100%;
    position: relative;
    margin-top: 1rem;
}

.btn-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-submit:disabled:hover {
    transform: none;
}

.btn-loader {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid white;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

.btn-submit.loading .btn-text {
    display: none;
}

.btn-submit.loading .btn-loader {
    display: block;
}

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

.toast {
    position: fixed;
    bottom: -100px;
    left: 50%;
    transform: translateX(-50%);
    padding: 1rem 2rem;
    background: var(--bg-primary);
    border-radius: 0.5rem;
    box-shadow: var(--shadow-xl);
    z-index: 10000;
    transition: bottom var(--transition-base);
    border: 2px solid var(--border-color);
    min-width: 300px;
    text-align: center;
}

.toast.show {
    bottom: 2rem;
}

.toast.success {
    border-color: var(--success);
    color: var(--success);
}

.toast.error {
    border-color: var(--error);
    color: var(--error);
}

/* ===== FOOTER ===== */
.footer {
    background: var(--bg-secondary);
    padding: 3rem 0 1.5rem;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    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;
}

.footer-section p {
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

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

.footer-bottom p {
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

/* ===== SCROLL TO TOP ===== */
.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 3rem;
    height: 3rem;
    background: var(--accent-gradient);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
    z-index: 999;
}

.scroll-top.visible {
    display: flex;
}

.scroll-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .biography-content {
        grid-template-columns: 1fr;
    }

    .timeline::before {
        left: 0;
    }

    .timeline-item::before {
        left: -6rem;
    }

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

@media (max-width: 768px) {
    :root {
        --section-padding: 3rem 0;
    }

    .nav {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        padding: 2rem;
        border-bottom: 1px solid var(--border-color);
        transform: translateY(-100%);
        transition: transform var(--transition-base);
        box-shadow: var(--shadow-lg);
    }

    .nav.active {
        transform: translateY(0);
    }

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

    .mobile-toggle {
        display: flex;
    }

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

    .timeline {
        padding-left: 1rem;
    }

    .timeline-item::before {
        position: static;
        display: block;
        margin-bottom: 0.5rem;
    }

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

    .cv-buttons {
        flex-direction: column;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .scroll-top {
        bottom: 1rem;
        right: 1rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .modal-content {
        margin: 0 1rem;
    }

    .modal-body {
        padding: 1.5rem;
    }
}

/* ===== ANIMATIONS PERSONNALISÉES ===== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}