/* ===========================
   Variables et Configuration
   =========================== */
   :root {
    /* Couleurs principales - Thème spatial plus sombre */
    --color-bg-primary: #000000; /* Plus sombre */
    --color-bg-secondary: #0a0a1a; /* Plus sombre */
    --color-bg-tertiary: #101020; /* Plus sombre */
    --color-bg-card: rgba(10, 10, 26, 0.8); /* Plus sombre */
    
    --color-text-primary: #f0f0f0;
    --color-text-secondary: #a0a0b0;
    --color-text-muted: #707080;
    
    --color-accent-primary: #3eb7f4; /* Bleu espace plus profond */
    --color-accent-secondary: #3a3aff; /* Indigo spatial */
    --color-accent-gradient: linear-gradient(135deg, #3a3aff 0%, #00aaff 100%);
    
    --color-border: rgba(100, 100, 120, 0.1);
    --color-hover: rgba(0, 170, 255, 0.15);
    
    /* Espacements */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Typographie */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', monospace;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.3);
}

/* ===========================
   Reset et Base
   =========================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    position: relative;
}

a {
    color: var(--color-accent-primary);
    text-decoration: none;
    transition: color var(--transition-base);
}

a:hover {
    color: var(--color-accent-secondary);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ===========================
   Typography
   =========================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }

p {
    margin-bottom: var(--spacing-sm);
}

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

.section {
    padding: var(--spacing-3xl) 0;
    position: relative;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    position: relative;
    display: inline-block;
    width: 100%;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 2px;
    background: var(--color-accent-primary);
    transition: width var(--transition-base);
}

.section-title:hover::after {
    width: 100px;
}

/* ===========================
   Buttons
   =========================== */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-weight: 600;
    transition: all var(--transition-base);
    cursor: pointer;
    text-align: center;
    position: relative;
    overflow: hidden;
    border-radius: 0; /* Sharp for spaceship panel */
}

.btn-primary {
    background: #0a0a1a; /* Dark spaceship panel */
    color: #e0e0e0; /* Light text */
    border: 1px solid rgba(0, 170, 255, 0.2); /* Subtle border */
}

.btn-primary:hover {
    border-color: rgba(0, 170, 255, 0.8); /* Neon glow increase */
    box-shadow: 0 0 10px rgba(0, 170, 255, 0.3); /* Discreet glow */
}

.btn-secondary {
    background-color: var(--color-bg-secondary);
    color: var(--color-accent-primary);
    border: none;
}

.btn-secondary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 2px;
    background: var(--color-accent-primary);
    transition: left 0.4s ease; /* Scan line sweep */
    opacity: 0.5;
}

.btn-secondary:hover::before {
    left: 100%; /* Sweep across */
}

.btn-secondary:hover {
    color: var(--color-accent-secondary); /* Color shift */
}

/* ===========================
   Header & Navigation
   =========================== */
.site-header {
    position: fixed;
    width: 100%;
    background: rgba(10, 14, 26, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.nav-brand .logo-text {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--color-accent-primary);
    padding-left: 10px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-menu li a {
    color: var(--color-text-primary);
    transition: color var(--transition-fast);
}

.nav-menu li a:hover {
    color: var(--color-accent-primary);
}

.nav-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.lang-toggle {
    background: transparent;
    border: 1px solid var(--color-border);
    padding: 0.25rem 0.5rem;
    color: var(--color-text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-right: 10px;
}

.lang-toggle:hover {
    border-color: var(--color-accent-primary);
}

.nav-toggle {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 4px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    transition: all var(--transition-fast);
}

/* Mobile Nav */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--color-bg-secondary);
        padding: var(--spacing-md);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-toggle {
        display: flex;
    }

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

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
}

/* ===========================
   Hero Section
   =========================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    border-bottom: var(--color-bg-tertiary) 5px solid;
}
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: none; /* Remove SVG background */
    animation: none; /* Remove animation */
    z-index: -2;
    will-change: transform;
    transform: translateY(calc(var(--parallax-offset, 0) * -1));
}

/* Remove hero-specific stars if global */
.hero .stars-bg {
    display: none; /* Since global now */
}

/* Add nebula effect to hero */
.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(58,58,255,0.05) 0%, transparent 70%);
    opacity: 0.5;
}

.hero-content {
    text-align: center;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-xl);
}

.hero-name {
    color: var(--color-accent-primary);
    display: block;
}

.hero-cta {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.hero-photo {
    width: 250px;
    height: 250px;
    border-radius: 50%;
    background-image: url('assets/photo.png');
    background-size: cover; /* Placeholder color */
    margin: var(--spacing-md) auto; /* Center it */
    box-shadow: var(--shadow-glow);
    /* For real image: background-image: url('assets/profile.jpg'); background-size: cover; */
}

/* Light Parallax */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, rgba(0,212,255,0.1) 0%, transparent 70%);
    transform: translateZ(-1px) scale(1.1);
    z-index: -1;
}

/* ===========================
   About Section
   =========================== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

.about-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.detail-card {
    background: var(--color-bg-card);
    padding: var(--spacing-md);
    border-radius: 8px;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base);
}

.detail-card:hover {
    transform: translateY(-5px);
}

.interests-list {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.interests-list li {
    background: var(--color-hover);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
}

.about-visual .visual-placeholder {
    height: 400px;
    background: var(--color-bg-tertiary);
    border-radius: 8px;
}

/* ===========================
   Education Section
   =========================== */

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0%; /* Shift left for better balance */
    width: 2px;
    height: 100%;
    background: var(--color-accent-primary);
    z-index: 2;
}

.timeline-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
    background: var(--color-bg-card);
    position: relative;
    padding-right: 10px;
}

.timeline-date {
    flex: 1;
    text-align: right;
    padding-right: var(--spacing-md);
    font-weight: bold;
    color: var(--color-accent-primary);
    font-size: 1.8rem; /* Increase size */
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

.timeline-content {
    flex: 1;
    padding-left: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: 8px;
    box-shadow: var(--shadow-md);
}

.timeline-item::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 1px; 
    transform: translate(-50%, -50%);
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--color-accent-secondary);
    box-shadow: var(--shadow-glow);
    z-index: 3;
}
.timeline-logo{
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 150px;
}
/* Alternate sides for mobile */
@media (max-width: 768px) {
    .timeline::before {
        left: 10px; /* Adjust for mobile */
    }

    .timeline-item {
        flex-direction: column;
    }

    .timeline-date {
        text-align: left;
        padding: 0 0 var(--spacing-sm) var(--spacing-lg);
        font-size: 1rem; /* Slightly smaller on mobile but still readable */
    }

    .timeline-content {
        padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) var(--spacing-lg);
    }

    .timeline-item::before {
        left: 10px;
    }
}

/* ===========================
   Skills Section
   =========================== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.skill-category {
    background: var(--color-bg-card);
    padding: var(--spacing-md);
    border-radius: 8px;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base);
}

.skill-category:hover {
    transform: translateY(-5px);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.skill-tag {
    background: var(--color-hover);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    transition: background var(--transition-fast);
}

.skill-tag:hover {
    background: var(--color-accent-primary);
    color: var(--color-bg-primary);
}

/* ===========================
   Experience Section
   =========================== */
.experience-grid {
    grid-template-columns: 1fr; /* One per row */
    gap: var(--spacing-2xl); /* More vertical spacing */
}

.experience-card {
    padding: var(--spacing-xl); /* Even more padding */
    max-width: 800px; /* Wider cards */
    margin: 2px auto; /* Center them */
    background: var(--color-bg-card);
    border-radius: 8px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    position: relative;
    color: white ;
    text-decoration: none;
}

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

.experience-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: var(--spacing-sm);
}

.experience-date {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.experience-role {
    color: var(--color-accent-primary);
    margin-bottom: var(--spacing-xs);
}

.experience-skills {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.experience-photo-placeholder {
    height: 250px;
    background: var(--color-bg-tertiary);
    margin-bottom: var(--spacing-md);
    border-radius: 8px;
}

/* ===========================
   Projects Section
   =========================== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.project-card {
    background: var(--color-bg-card);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

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

.project-visual {
    height: 200px;
    background: var(--color-bg-tertiary);
    /* Placeholder for image */
}

.project-content {
    padding: var(--spacing-md);
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

/* ===========================
   Contact Section
   =========================== */
.contact-content {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 300px; /* Optional for spacing */
}

.contact-info {
    max-width: 600px;
    text-align: center;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    align-items: center;
}

.contact-item {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.contact-label {
    min-width: 80px;
    color: var(--color-text-muted);
}

.contact-form .form-group {
    margin-bottom: var(--spacing-md);
}

.contact-form label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: var(--spacing-sm);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    color: var(--color-text-primary);
    border-radius: 4px;
    transition: border var(--transition-fast);
}

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

.error-message {
    color: #ff6b6b;
    font-size: 0.875rem;
    margin-top: 0.25rem;
    display: none;
}

.form-group.invalid .error-message {
    display: block;
}

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

/* ===========================
   Footer
   =========================== */
.site-footer {
    background: var(--color-bg-secondary);
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-section h3 {
    margin-bottom: var(--spacing-sm);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-md);
    font-size: 0.875rem;
}

.footer-lang {
    display: flex;
    gap: var(--spacing-sm);
}

.lang-option {
    background: transparent;
    border: 1px solid var(--color-border);
    padding: 0.25rem 0.75rem;
    color: var(--color-text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lang-option:hover,
.lang-option.active {
    border-color: var(--color-accent-primary);
    color: var(--color-accent-primary);
}

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

/* ===========================
   Responsive Design
   =========================== */
@media (max-width: 1024px) {
    .container {
        padding: 0 var(--spacing-md);
    }

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

@media (max-width: 768px) {
    html {
        font-size: 14px;
    }

    .section {
        padding: var(--spacing-2xl) 0;
    }

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

@media (max-width: 480px) {
    .skills-grid,
    .experience-grid,
    .projects-grid {
        grid-template-columns: 1fr;
    }
}

#stars-container {
    position: absolute; /* Change to absolute for full document coverage */
    left: 0;
    width: 100%;
    overflow: hidden;
    z-index: -2;
    pointer-events: none;
    height: 100%;
}

.star {
    position: absolute;
    background: white;
    border-radius: 50%;
    opacity: var(--opacity);
    width: var(--size);
    height: var(--size);
    transform: translateY(calc(var(--parallax-offset, 0) * -1)); /* Keep parallax */
}
.home-background{
    position: absolute;
    width: 100%;
    height: 100vh;
    background : url(assets/MinesNancy_Galerie2.jpg)  center/cover no-repeat fixed;
    opacity: 0.2;
}