/* ========================================
   MAIN.CSS - Styles principaux
   Portfolio TI EPHEC - Mohamed El Mazani
   ======================================== */

/* ========================================
   1. ROOT & VARIABLES
   ======================================== */
:root {
    /* Couleurs principales - Palette Periwinkle to Deep Blue */
    --primary: #CCCCFF;      /* Periwinkle - Couleur principale douce */
    --primary-dark: #A3A3CC; /* Lavande foncée - Transitions */
    --secondary: #5C5C99;    /* Bleu-violet - Accents et hover */
    --accent: #292966;       /* Bleu profond - Titres et contraste */
    
    /* Couleurs d'état */
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    
    /* Couleurs neutres */
    --dark: #1e293b;
    --gray: #64748b;
    --gray-light: #94a3b8;
    --light: #f8fafc;
    --white: #ffffff;
    
    /* Typographie */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
    
    /* Espacements */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Bordures et ombres */
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    --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, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
    
    /* Transitions */
    --transition-fast: 0.3s ease;   /* au lieu de 0.15s */
    --transition-base: 0.6s ease;   /* au lieu de 0.3s */
    --transition-slow: 1s ease;     /* au lieu de 0.5s */
    
    /* Z-index */
    --z-navbar: 1000;
    --z-modal: 2000;
    --z-tooltip: 3000;
}

/* ========================================
   2. RESET & BASE
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--dark);
    background-color: var(--white);
    overflow-x: hidden;
}

/* ========================================
   3. TYPOGRAPHY
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--accent);
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
}

h2 {
    font-size: clamp(1.5rem, 4vw, 2.25rem);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.5rem);
}

h4 {
    font-size: 1.125rem;
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--gray);
}

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

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

/* ========================================
   4. LAYOUT & CONTAINERS
   ======================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

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

/* ========================================
   5. NAVIGATION
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 1px 3px rgba(41, 41, 102, 0.1);
    z-index: var(--z-navbar);
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 4px 12px rgba(41, 41, 102, 0.15);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
    cursor: pointer;
}

.logo-dot {
    color: var(--secondary);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-2xl);
    align-items: center;
}

.nav-link {
    font-weight: 500;
    color: var(--gray);
    position: relative;
    transition: color var(--transition-base);
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary);
    transition: width var(--transition-base);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: var(--accent);
    margin: 3px 0;
    transition: var(--transition-base);
    border-radius: 3px;
}

/* ========================================
   6. HERO SECTION
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--light) 0%, rgba(204, 204, 255, 0.2) 100%);
    padding-top: 80px;
    position: relative;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
    width: 100%;
}

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

.hero-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--primary);
    color: var(--accent);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--spacing-lg);
}

.hero-title {
    margin-bottom: var(--spacing-xl);
    color: var(--accent);
}

.hero-surname {
    background: linear-gradient(135deg, var(--secondary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--gray);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.hero-visual {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
    z-index: -1;
}

.hero-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.3;
}

.shape-1 {
    width: 300px;
    height: 300px;
    background: var(--primary);
    top: 20%;
    right: 10%;
    animation: float 20s ease-in-out infinite;
}

.shape-2 {
    width: 250px;
    height: 250px;
    background: var(--primary-dark);
    bottom: 20%;
    left: 10%;
    animation: float 25s ease-in-out infinite reverse;
}

.shape-3 {
    width: 200px;
    height: 200px;
    background: var(--secondary);
    top: 50%;
    left: 50%;
    animation: float 30s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.9); }
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
}

.scroll-down {
    width: 30px;
    height: 50px;
    border: 2px solid var(--secondary);
    border-radius: 20px;
    position: relative;
}

.scroll-down::after {
    content: '';
    position: absolute;
    top: 10px;
    left: 50%;
    width: 4px;
    height: 10px;
    background: var(--secondary);
    border-radius: 2px;
    transform: translateX(-50%);
    animation: scroll 2s ease-in-out infinite;
}

@keyframes scroll {
    0% { opacity: 0; top: 10px; }
    50% { opacity: 1; }
    100% { opacity: 0; top: 30px; }
}

/* ========================================
   7. BUTTONS
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: var(--accent);
    color: var(--white);
}

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

.btn-secondary {
    background: transparent;
    color: var(--accent);
    border: 2px solid var(--primary-dark);
}

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

.btn-ghost {
    background: transparent;
    color: var(--gray);
    border: 1px solid var(--gray-light);
}

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

.btn-icon {
    width: 20px;
    height: 20px;
}

/* ========================================
   8. CARDS
   ======================================== */
.card {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* ========================================
   9. INFO SECTIONS
   ======================================== */
.quick-info {
    background: var(--light);
    padding: var(--spacing-3xl) 0;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.info-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    text-align: center;
    transition: all var(--transition-base);
    border: 1px solid transparent;
}

.info-card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.info-icon {
    width: 50px;
    height: 50px;
    margin: 0 auto var(--spacing-md);
    padding: var(--spacing-sm);
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.info-icon svg {
    color: var(--accent);
}

.info-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--accent);
}

.info-text {
    color: var(--gray);
    line-height: 1.6;
}

/* ========================================
   10. ACTIVITIES PREVIEW
   ======================================== */
.recent-activities {
    padding: var(--spacing-3xl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    color: var(--accent);
}

.activities-preview {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.activity-preview-card {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--secondary);
    transition: all var(--transition-base);
}

.activity-preview-card:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.activity-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--primary);
    color: var(--accent);
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
}

.activity-preview-card h4 {
    margin-bottom: var(--spacing-xs);
}

.activity-hours {
    color: var(--gray-light);
    font-size: 0.875rem;
}

.activity-preview-more {
    display: flex;
    align-items: center;
    justify-content: center;
}

.link-arrow {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--secondary);
    font-weight: 500;
    transition: all var(--transition-base);
}

.link-arrow:hover {
    gap: var(--spacing-md);
    color: var(--accent);
}

/* ========================================
   11. CONTACT CTA
   ======================================== */
.contact-cta {
    background: linear-gradient(135deg, var(--primary) 0%, rgba(163, 163, 204, 0.5) 100%);
    padding: var(--spacing-3xl) 0;
    text-align: center;
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
}

.cta-title {
    margin-bottom: var(--spacing-md);
    color: var(--accent);
}

.cta-text {
    margin-bottom: var(--spacing-xl);
    color: var(--gray);
    font-size: 1.125rem;
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ========================================
   12. FOOTER
   ======================================== */
.footer {
    background: var(--accent);
    color: var(--white);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.footer-content p {
    margin-bottom: var(--spacing-xs);
    color: var(--primary);
}

.footer-note {
    font-size: 0.875rem;
    opacity: 0.8;
}

/* ========================================
   13. UTILITIES
   ======================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.hidden { display: none !important; }
.visible { display: block !important; }

/* ========================================
   14. ANIMATIONS
   ======================================== */
.fade-in {
    animation: fadeIn 0.8s ease-out;
}

.fade-in-delay {
    animation: fadeIn 0.8s ease-out 0.3s both;
}

.fade-in-delay-2 {
    animation: fadeIn 0.8s ease-out 0.6s both;
}

.slide-up {
    animation: slideUp 0.8s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}