/* ========================================
   VARIABLES CSS
   ======================================== */
:root {
    --bg-primary: #0A1020;
    --bg-surface: #111A2E;
    --text-primary: #E6ECF5;
    --text-secondary: #94A3B8;
    --color-primary: #4C8DFF;
    --color-accent: #2EE6A6;
    --color-primary-hover: #3B7DEE;
    --color-accent-hover: #2DC594;

    --font-display: 'Space Grotesk', sans-serif;
    --font-body: 'Inter Tight', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    --border-radius: 8px;
    --border-width: 1px;
    --shadow-sm: 0 2px 8px rgba(76, 141, 255, 0.1);
    --shadow-md: 0 4px 16px rgba(76, 141, 255, 0.15);
    --shadow-lg: 0 8px 32px rgba(76, 141, 255, 0.2);

    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

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

h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

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

ul {
    list-style: none;
}

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

button {
    font-family: var(--font-body);
    cursor: pointer;
    border: none;
    background: none;
}

/* ========================================
   GRILLE DE POINTS LUMINEUX
   ======================================== */
.grid-dots {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    opacity: 0.3;
}

.grid-dots::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(circle at 1px 1px, rgba(76, 141, 255, 0.3) 1px, transparent 0);
    background-size: 50px 50px;
    animation: gridMove var(--transition-slow) linear infinite;
}

@keyframes gridMove {
    from {
        background-position: 0 0;
    }
    to {
        background-position: 0 50px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .grid-dots {
        display: none;
    }
}

/* ========================================
   NAVIGATION
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 16, 32, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: var(--border-width) solid rgba(76, 141, 255, 0.2);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.5px;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 5px;
}

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

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-menu a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
}

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition-fast);
}

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

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 8rem 1.5rem 4rem;
    overflow: hidden;
}

.hero-content {
    max-width: 600px;
    z-index: 1;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--border-radius);
    transition: all var(--transition-medium);
    text-align: center;
}

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

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

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

.btn-secondary:hover {
    background-color: rgba(76, 141, 255, 0.1);
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
}

/* ========================================
   HERO ILLUSTRATION
   ======================================== */
.hero-illustration {
    position: absolute;
    right: 5%;
    top: 50%;
    transform: translateY(-50%);
    width: 450px;
    height: 450px;
    z-index: 0;
}

.hero-illustration svg {
    width: 100%;
    height: 100%;
}

/* ========================================
   SECTIONS
   ======================================== */
.section {
    position: relative;
    padding: 6rem 1.5rem;
    z-index: 1;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

/* ========================================
   FILTRES
   ======================================== */
.filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
    margin-bottom: 3rem;
}

.filter-btn {
    padding: 0.625rem 1.25rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    background-color: var(--bg-surface);
    border: var(--border-width) solid rgba(76, 141, 255, 0.2);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
}

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

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

/* ========================================
   GRILLE DE MODÈLES
   ======================================== */
.models-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

.model-card {
    background-color: var(--bg-surface);
    border: var(--border-width) solid rgba(76, 141, 255, 0.15);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: all var(--transition-medium);
    animation: fadeInUp 0.5s ease;
}

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

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

.card-image {
    position: relative;
    padding-top: 75%;
    background-color: var(--bg-surface);
    overflow: hidden;
}

.card-image.restaurant,
.card-image.beaute,
.card-image.medical {
    background-color: var(--bg-surface);
}

.card-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-medium);
}

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

.card-illustration {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.card-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    padding: 0.375rem 0.875rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background-color: rgba(76, 141, 255, 0.15);
    color: var(--color-primary);
    border-radius: 4px;
}

.card-content {
    padding: 1.5rem;
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.card-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1rem;
    line-height: 1.7;
}

.card-link {
    display: inline-block;
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.9rem;
}

.card-link:hover {
    color: var(--color-accent);
}

/* ========================================
   PROCESSUS
   ======================================== */
.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.process-step {
    position: relative;
    padding: 2rem;
    background-color: var(--bg-surface);
    border: var(--border-width) solid rgba(76, 141, 255, 0.1);
    border-radius: var(--border-radius);
    transition: all var(--transition-medium);
}

.process-step:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.step-number {
    font-family: var(--font-mono);
    font-size: 2.5rem;
    font-weight: 500;
    color: rgba(76, 141, 255, 0.2);
    margin-bottom: 1rem;
}

.process-step h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.process-step p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

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

.contact-container {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
    align-items: start;
}

.contact-content h2 {
    margin-bottom: 1rem;
}

.contact-description {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.contact-info {
    margin-bottom: 2rem;
}

.info-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    padding: 1.5rem;
    background-color: var(--bg-primary);
    border: var(--border-width) solid rgba(76, 141, 255, 0.1);
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
}

.info-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.info-text h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.info-text p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    font-family: var(--font-body);
    font-size: 1rem;
    background-color: var(--bg-primary);
    border: var(--border-width) solid rgba(76, 141, 255, 0.2);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(76, 141, 255, 0.1);
}

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

/* ========================================
   FOOTER
   ======================================== */
.footer {
    padding: 3rem 1.5rem;
    background-color: var(--bg-surface);
    border-top: var(--border-width) solid rgba(76, 141, 255, 0.15);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
}

.footer-logo h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.footer-logo p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-nav ul {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.footer-nav a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

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

.footer-copy {
    text-align: right;
}

.footer-copy p {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* ========================================
   TOAST
   ======================================== */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    padding: 1rem 1.5rem;
    background-color: var(--bg-surface);
    border: var(--border-width) solid var(--color-accent);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 1rem;
    transform: translateY(150%);
    transition: transform var(--transition-medium);
    z-index: 2000;
}

.toast.show {
    transform: translateY(0);
}

.toast-icon {
    font-size: 1.5rem;
    color: var(--color-accent);
}

.toast-message {
    font-weight: 500;
}

/* ========================================
   MOBILE NAV
   ======================================== */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        background-color: var(--bg-surface);
        border-bottom: var(--border-width) solid rgba(76, 141, 255, 0.2);
        flex-direction: column;
        padding: 1.5rem;
        gap: 1rem;
        transition: left var(--transition-medium);
    }

    .nav-menu.active {
        left: 0;
    }

    .hero {
        flex-direction: column;
        padding-top: 6rem;
        text-align: center;
    }

    .hero-content {
        max-width: 100%;
    }

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

    .hero-illustration {
        display: none;
    }

    .section {
        padding: 4rem 1.5rem;
    }

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

    .contact-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

    .footer-nav {
        order: -1;
    }

    .footer-copy {
        text-align: center;
    }

    .info-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}

/* ========================================
   TABLETTE
   ======================================== */
@media (min-width: 769px) and (max-width: 1024px) {
    .hero-illustration {
        width: 350px;
        height: 350px;
    }

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

    .contact-container {
        gap: 2rem;
    }
}

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

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}