/* ============================================
   ITIAD SARL - Modern Showcase Website
   Colors: #ffffff, #0091ff, #eb9120
   ============================================ */

/* CSS Variables - Light Theme (Default) */
:root {
    /* Brand Colors */
    --color-primary: #0091ff;
    --color-secondary: #eb9120;
    --color-white: #ffffff;

    /* Light Theme */
    --color-bg: #f8fafc;
    --color-bg-alt: #f1f5f9;
    --color-surface: #ffffff;
    --color-surface-hover: #f8fafc;
    --color-text: #1e293b;
    --color-text-light: #64748b;
    --color-text-muted: #94a3b8;
    --color-border: #e2e8f0;
    --color-border-light: #f1f5f9;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #0091ff 0%, #00d4ff 100%);
    --gradient-secondary: linear-gradient(135deg, #eb9120 0%, #fbbf24 100%);
    --gradient-hero: linear-gradient(135deg, rgba(0, 145, 255, 0.9) 0%, rgba(235, 145, 32, 0.8) 100%);
    --gradient-card: linear-gradient(180deg, rgba(255,255,255,0) 0%, rgba(0,145,255,0.05) 100%);

    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
    --shadow-glow-primary: 0 0 40px rgba(0, 145, 255, 0.3);
    --shadow-glow-secondary: 0 0 40px rgba(235, 145, 32, 0.3);

    /* Typography */
    --font-main: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Outfit', sans-serif;

    /* Spacing */
    --container-width: 1280px;
    --container-padding: 24px;
    --header-height: 80px;
    --section-padding: 100px;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Dark Theme */
[data-theme="dark"] {
    --color-bg: #0a0f1a;
    --color-bg-alt: #111827;
    --color-surface: #1e293b;
    --color-surface-hover: #334155;
    --color-text: #f1f5f9;
    --color-text-light: #94a3b8;
    --color-text-muted: #64748b;
    --color-border: #334155;
    --color-border-light: #1e293b;

    --gradient-card: linear-gradient(180deg, rgba(30,41,59,0) 0%, rgba(0,145,255,0.1) 100%);

    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
}

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

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

body {
    font-family: var(--font-main);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    overflow-x: hidden;
    transition: background-color var(--transition-base), color var(--transition-base);
}

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

ul, ol {
    list-style: none;
}

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

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

.section-alt {
    background-color: var(--color-bg-alt);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(0, 145, 255, 0.1);
    border: 1px solid rgba(0, 145, 255, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-text-light) 100%);
    -webkit-background-clip: text;
    background-clip: text;
}

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

.section-description {
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

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

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left var(--transition-slow);
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--color-white);
    box-shadow: var(--shadow-md), 0 4px 15px rgba(0, 145, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg), 0 8px 25px rgba(0, 145, 255, 0.4);
}

.btn-secondary {
    background: var(--gradient-secondary);
    color: var(--color-white);
    box-shadow: var(--shadow-md), 0 4px 15px rgba(235, 145, 32, 0.3);
}

.btn-secondary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg), 0 8px 25px rgba(235, 145, 32, 0.4);
}

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

.btn-outline:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-3px);
}

.btn-glass {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--color-white);
}

.btn-glass:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-3px);
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    z-index: 1000;
    transition: all var(--transition-base);
}

.main-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    opacity: 0;
    transition: opacity var(--transition-base);
}

[data-theme="dark"] .main-header::before {
    background: rgba(10, 15, 26, 0.85);
}

.main-header.scrolled::before {
    opacity: 1;
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    position: relative;
    z-index: 1;
}

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

.logo img {
    height: 45px;
    transition: transform var(--transition-base);
}

.logo:hover img {
    transform: scale(1.05);
}

.main-nav {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    gap: 8px;
}

.nav-link {
    position: relative;
    padding: 10px 18px;
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--color-text);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: width var(--transition-base);
}

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

.nav-link:hover::before,
.nav-link.active::before {
    width: calc(100% - 36px);
}

/* Header Controls */
.header-controls {
    display: flex;
    align-items: center;
    gap: 12px;
}

.control-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    font-size: 1.25rem;
    transition: all var(--transition-fast);
}

.control-btn:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
}

.lang-toggle {
    font-size: 0.875rem;
    font-weight: 700;
    min-width: 44px;
}

/* Mobile Menu Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 44px;
    height: 44px;
    padding: 10px;
    border-radius: var(--radius-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    z-index: 1001;
}

.mobile-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all var(--transition-base);
    transform-origin: center;
}

.mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 6px);
}

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

.mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -6px);
}

/* Mobile Navigation */
.mobile-nav {
    display: none;
    position: fixed;
    top: 0;
    right: -100%;
    width: 85%;
    max-width: 400px;
    height: 100vh;
    background: var(--color-surface);
    z-index: 999;
    padding: 100px 30px 40px;
    transition: right var(--transition-base);
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
}

.mobile-nav.active {
    right: 0;
}

.mobile-nav-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.mobile-nav-link {
    display: block;
    padding: 16px 20px;
    font-size: 1.1rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    background: rgba(0, 145, 255, 0.1);
    color: var(--color-primary);
}

.mobile-nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 998;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.mobile-nav-overlay.active {
    opacity: 1;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--header-height);
    overflow: hidden;
}

.hero-slider {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 1s ease;
}

.hero-slide.active {
    opacity: 1;
}

.hero-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(10, 15, 26, 0.85) 0%, rgba(0, 145, 255, 0.4) 100%);
    z-index: 1;
}

[data-theme="dark"] .hero-overlay {
    background: linear-gradient(135deg, rgba(10, 15, 26, 0.92) 0%, rgba(0, 145, 255, 0.25) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    color: var(--color-white);
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease forwards;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease 0.2s forwards;
    opacity: 0;
}

.hero-title span {
    display: block;
    background: linear-gradient(135deg, var(--color-white) 0%, rgba(255,255,255,0.8) 100%);
    -webkit-background-clip: text;
    background-clip: text;
}

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

.hero-description {
    font-size: 1.25rem;
    line-height: 1.8;
    margin-bottom: 40px;
    opacity: 0.9;
    animation: fadeInUp 0.8s ease 0.4s forwards;
    opacity: 0;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    animation: fadeInUp 0.8s ease 0.6s forwards;
    opacity: 0;
}

.hero-slider-dots {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 3;
}

.slider-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
}

.slider-dot.active {
    background: var(--color-white);
    transform: scale(1.2);
}

/* ============================================
   GEOMETRIC BACKGROUND
   ============================================ */
.geo-background {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    overflow: hidden;
}

.geo-shape {
    position: absolute;
    opacity: 0.5;
}

.geo-shape.circle {
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 145, 255, 0.15) 0%, transparent 70%);
}

.geo-shape.hexagon {
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    background: linear-gradient(135deg, rgba(235, 145, 32, 0.1) 0%, rgba(0, 145, 255, 0.1) 100%);
}

.geo-shape.triangle {
    clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
    background: linear-gradient(180deg, rgba(0, 145, 255, 0.1) 0%, transparent 100%);
}

.geo-shape.diamond {
    transform: rotate(45deg);
    background: rgba(235, 145, 32, 0.08);
    border: 1px solid rgba(235, 145, 32, 0.15);
}

/* ============================================
   CARDS
   ============================================ */
.card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
    overflow: hidden;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

/* Service Card */
.service-card {
    position: relative;
    padding: 40px 30px;
    text-align: center;
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    background: rgba(0, 145, 255, 0.1);
    border-radius: var(--radius-lg);
    position: relative;
}

.service-icon::after {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: inherit;
    border: 2px dashed rgba(0, 145, 255, 0.3);
    animation: spin 20s linear infinite;
}

.service-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-text);
}

.service-card p {
    color: var(--color-text-light);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* Team Card */
.team-card {
    position: relative;
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.team-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.team-img {
    position: relative;
    height: 280px;
    overflow: hidden;
}

.team-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.team-card:hover .team-img img {
    transform: scale(1.1);
}

.team-img-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, var(--color-surface) 0%, transparent 50%);
}

.team-info {
    padding: 24px;
    text-align: center;
    position: relative;
    margin-top: -40px;
}

.team-info h4 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 6px;
}

.team-role {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(0, 145, 255, 0.1);
    color: var(--color-primary);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: var(--radius-full);
}

/* Formation Card */
.formation-card {
    position: relative;
    height: 320px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    cursor: pointer;
    group: formation;
}

.formation-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.formation-card:hover img {
    transform: scale(1.15);
}

.formation-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9) 0%, rgba(0, 0, 0, 0.3) 50%, transparent 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 30px;
    transition: all var(--transition-base);
}

.formation-card:hover .formation-overlay {
    background: linear-gradient(to top, rgba(0, 145, 255, 0.95) 0%, rgba(0, 145, 255, 0.6) 50%, rgba(0, 145, 255, 0.3) 100%);
}

.formation-overlay h4 {
    color: var(--color-white);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 8px;
    transform: translateY(20px);
    transition: transform var(--transition-base);
}

.formation-overlay p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.9rem;
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-base);
}

.formation-card:hover .formation-overlay h4,
.formation-card:hover .formation-overlay p {
    transform: translateY(0);
}

.formation-card:hover .formation-overlay p {
    opacity: 1;
}

/* Project Card */
.project-card {
    position: relative;
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-secondary);
}

.project-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 8px 16px;
    background: var(--gradient-secondary);
    color: var(--color-white);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: var(--radius-full);
}

.project-img {
    height: 220px;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.project-img::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: var(--slide-bg, url("../images/slides/slide_1_fr.png"));
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.project-img h3 {
    color: var(--color-white);
    font-size: 2rem;
    font-weight: 800;
    position: relative;
    z-index: 1;
}

.project-content {
    padding: 30px;
}

.project-content h4 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-text);
}

.project-content p {
    color: var(--color-text-light);
    margin-bottom: 20px;
    line-height: 1.7;
}

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

.project-feature {
    padding: 6px 14px;
    background: rgba(0, 145, 255, 0.1);
    color: var(--color-primary);
    font-size: 0.8rem;
    font-weight: 500;
    border-radius: var(--radius-full);
}

.project-links {
    display: flex;
    gap: 12px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--color-border);
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.9rem;
}

.project-link:hover {
    color: var(--color-secondary);
}

/* ============================================
   GRIDS
   ============================================ */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.formations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 40px;
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--color-text);
}

.about-text p {
    color: var(--color-text-light);
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 30px;
}

.about-feature {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 20px;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.about-feature-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 145, 255, 0.1);
    border-radius: var(--radius-md);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.about-feature h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--color-text);
}

.about-feature p {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin: 0;
}

.about-visual {
    position: relative;
}

.about-img-wrapper {
    position: relative;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.about-stats {
    position: absolute;
    bottom: -30px;
    right: -30px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    padding: 25px;
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border);
}

.stat-item {
    text-align: center;
    padding: 15px;
}

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

.stat-label {
    font-size: 0.85rem;
    color: var(--color-text-light);
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 50px;
}

.contact-info {
    padding: 40px;
    background: var(--gradient-primary);
    border-radius: var(--radius-2xl);
    color: var(--color-white);
    position: relative;
    overflow: hidden;
}

.contact-info::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
}

.contact-info h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 20px;
    position: relative;
}

.contact-info > p {
    opacity: 0.9;
    margin-bottom: 40px;
    position: relative;
}

.contact-details {
    position: relative;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 30px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    font-size: 1.25rem;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.contact-item p,
.contact-item a {
    opacity: 0.9;
    font-size: 0.95rem;
}

.contact-item a:hover {
    text-decoration: underline;
}

.contact-form-wrapper {
    background: var(--color-surface);
    border-radius: var(--radius-2xl);
    padding: 40px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border);
}

.contact-form-wrapper h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 30px;
    color: var(--color-text);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 8px;
}

.form-control {
    width: 100%;
    padding: 14px 18px;
    font-size: 1rem;
    font-family: inherit;
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(0, 145, 255, 0.1);
}

.form-control::placeholder {
    color: var(--color-text-muted);
}

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

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding-top: 80px;
}

.footer-main {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 50px;
    padding-bottom: 60px;
}

.footer-brand img {
    height: 50px;
    margin-bottom: 20px;
}

.footer-brand p {
    color: var(--color-text-light);
    margin-bottom: 24px;
    line-height: 1.7;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.social-link {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-size: 1.2rem;
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-3px);
}

.footer-column h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 24px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-link {
    color: var(--color-text-light);
    font-size: 0.95rem;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--color-primary);
}

.footer-contact-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 16px;
    color: var(--color-text-light);
    font-size: 0.95rem;
}

.footer-contact-item span:first-child {
    color: var(--color-primary);
    font-size: 1.1rem;
}

.footer-bottom {
    padding: 24px 0;
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-copyright {
    color: var(--color-text-light);
    font-size: 0.9rem;
}

.footer-legal {
    display: flex;
    gap: 30px;
}

.footer-legal a {
    color: var(--color-text-light);
    font-size: 0.9rem;
}

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

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

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

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.05); }
}

.animate-fade-up {
    animation: fadeInUp 0.8s ease forwards;
}

.animate-float {
    animation: float 6s ease-in-out infinite;
}

/* Scroll Animations */
[data-animate] {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

[data-animate].visible {
    opacity: 1;
    transform: translateY(0);
}

[data-animate="fade-right"] {
    transform: translateX(-40px);
}

[data-animate="fade-right"].visible {
    transform: translateX(0);
}

[data-animate="fade-left"] {
    transform: translateX(40px);
}

[data-animate="fade-left"].visible {
    transform: translateX(0);
}

[data-animate="scale"] {
    transform: scale(0.9);
}

[data-animate="scale"].visible {
    transform: scale(1);
}

/* Stagger animations */
[data-animate-delay="1"] { transition-delay: 0.1s; }
[data-animate-delay="2"] { transition-delay: 0.2s; }
[data-animate-delay="3"] { transition-delay: 0.3s; }
[data-animate-delay="4"] { transition-delay: 0.4s; }
[data-animate-delay="5"] { transition-delay: 0.5s; }
[data-animate-delay="6"] { transition-delay: 0.6s; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    :root {
        --section-padding: 80px;
    }

    .footer-main {
        grid-template-columns: 1fr 1fr;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-visual {
        order: -1;
    }

    .about-stats {
        position: relative;
        bottom: 0;
        right: 0;
        margin-top: 20px;
    }

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

@media (max-width: 768px) {
    :root {
        --section-padding: 60px;
        --header-height: 70px;
    }

    .main-nav {
        display: none;
    }

    .mobile-toggle,
    .mobile-nav {
        display: flex;
    }

    .mobile-nav {
        flex-direction: column;
    }

    .hero-content {
        text-align: center;
    }

    .hero-buttons {
        justify-content: center;
    }

    .services-grid,
    .team-grid,
    .formations-grid {
        grid-template-columns: 1fr;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
    }

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

    .footer-main {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

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

@media (max-width: 480px) {
    :root {
        --container-padding: 16px;
    }

    .btn {
        padding: 12px 24px;
        font-size: 0.95rem;
        width: 100%;
    }

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

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

    .hero-title {
        font-size: 2rem;
    }
}

/* ============================================
   PAGE-SPECIFIC STYLES
   ============================================ */
/* Page Header (for internal pages) */
.page-header {
    padding: calc(var(--header-height) + 60px) 0 60px;
    text-align: center;
    position: relative;
    overflow: hidden;
    background-image: url("../images/slides/slides/slides_3.png");
    /* background-image: var(--slide-bg, url("../images/slides/slide_1_fr.png")); */
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(10, 15, 26, 0.75) 0%, rgba(0, 145, 255, 0.4) 100%);
    z-index: 0;
}

.page-header .container {
    position: relative;
    z-index: 1;
}

.page-header h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--color-white);
}

.page-header p {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.85);
    max-width: 600px;
    margin: 0 auto;
}

.breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.9);
}

.breadcrumb a:hover {
    color: var(--color-white);
}

.breadcrumb span {
    color: var(--color-text-muted);
}

/* Why Choose Us Section */
.reasons-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.reason-card {
    padding: 30px;
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.reason-card::before {
    content: attr(data-number);
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 4rem;
    font-weight: 800;
    color: var(--color-primary);
    opacity: 0.1;
    line-height: 1;
}

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

.reason-card h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--color-text);
}

.reason-card p {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

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

/* CTA Section */
.cta-section {
    background: var(--gradient-primary);
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: var(--slide-bg, url("../images/slides/slide_1_fr.png"));
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.cta-content {
    position: relative;
    z-index: 1;
    color: var(--color-white);
}

.cta-content h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 1.125rem;
    opacity: 0.9;
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Scroll to top button */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: 100;
    box-shadow: var(--shadow-lg);
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-top:hover {
    transform: translateY(-5px);
}