/* ===== Variables CSS ===== */
:root {
    /* Couleurs principales - Palette neutre et professionnelle */
    --primary: #2D3142;
    --primary-light: #4A4E69;
    --accent: #5C6D7C;
    --accent-light: #8B99A8;

    /* Couleurs neutres */
    --white: #FFFFFF;
    --off-white: #F8F9FA;
    --light-gray: #E9ECEF;
    --gray: #ADB5BD;
    --dark-gray: #495057;
    --black: #1A1A1A;

    /* Typographie */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;

    /* Espacements */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Bordures */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;

    /* Ombres */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);

    /* Transitions */
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--black);
    background-color: var(--white);
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

a {
    text-decoration: none;
    color: inherit;
}

/* ===== Container ===== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

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

.nav-links {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-links a {
    color: var(--dark-gray);
    font-weight: 500;
    transition: var(--transition);
}

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

.btn-nav {
    background-color: var(--primary);
    color: var(--white) !important;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.btn-nav:hover {
    background-color: var(--primary-light);
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
    text-align: center;
}

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

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

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

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

.btn-full {
    width: 100%;
}

/* ===== Hero Section ===== */
.hero {
    padding: calc(80px + var(--spacing-xl)) 0 var(--spacing-xl);
    background: linear-gradient(135deg, var(--off-white) 0%, var(--light-gray) 100%);
    text-align: center;
}

.hero-content h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.375rem);
    color: var(--dark-gray);
    margin-bottom: var(--spacing-md);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

/* ===== Sections ===== */
.section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--primary);
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--dark-gray);
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

/* ===== Services Section ===== */
.services {
    background-color: var(--white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.service-card {
    padding: var(--spacing-md);
    background-color: var(--off-white);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

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

.service-icon {
    width: 64px;
    height: 64px;
    background-color: var(--primary);
    color: var(--white);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
}

.service-card h3 {
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: var(--spacing-xs);
}

.service-card p {
    color: var(--dark-gray);
}

/* ===== Find Model Section ===== */
.find-model {
    background: linear-gradient(135deg, #EEF2FF 0%, #F0FDFA 100%);
    position: relative;
    overflow: hidden;
}

.section-intro {
    font-size: 1.125rem;
    color: var(--dark-gray);
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-lg);
    line-height: 1.7;
}

.where-to-search {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.search-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--spacing-md);
}

.arrow-decoration {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: #8B5CF6;
    opacity: 0.4;
    display: none;
}

.arrow-left {
    left: 10%;
}

.arrow-right {
    right: 10%;
}

@media (min-width: 1200px) {
    .arrow-decoration {
        display: block;
    }
}

.platforms-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    max-width: 1100px;
    margin: 0 auto var(--spacing-xl);
}

.platform-card {
    position: relative;
    background-color: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 2px solid var(--light-gray);
    transition: all 0.4s ease;
    text-align: center;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.platform-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
    border-color: var(--accent);
}

.platform-card.featured {
    border-color: #10B981;
    background: linear-gradient(135deg, #ffffff 0%, #f0fdf4 100%);
}

.platform-card.featured:hover {
    box-shadow: 0 12px 40px rgba(16, 185, 129, 0.3);
    transform: translateY(-12px);
}

.platform-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #10B981 0%, #059669 100%);
    color: var(--white);
    padding: 0.375rem 1rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.4);
}

.platform-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: var(--spacing-md) auto var(--spacing-sm);
    transition: var(--transition);
}

.platform-icon.makerworld {
    background: linear-gradient(135deg, #10B981 0%, #059669 100%);
    color: var(--white);
    box-shadow: 0 4px 16px rgba(16, 185, 129, 0.3);
}

.platform-icon.printables {
    background: linear-gradient(135deg, #F97316 0%, #EA580C 100%);
    color: var(--white);
    box-shadow: 0 4px 16px rgba(249, 115, 22, 0.3);
}

.platform-icon.thingiverse {
    background: linear-gradient(135deg, #3B82F6 0%, #2563EB 100%);
    color: var(--white);
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.3);
}

.platform-card:hover .platform-icon {
    transform: scale(1.1) rotate(5deg);
}

.platform-card h4 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.25rem;
}

.platform-subtitle {
    font-size: 0.875rem;
    color: var(--gray);
    font-style: italic;
    margin-bottom: var(--spacing-sm);
}

.platform-description {
    color: var(--dark-gray);
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
}

.platform-recommended {
    display: inline-block;
    background: linear-gradient(135deg, #8B5CF6 0%, #7C3AED 100%);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-top: auto;
}

.find-model-cta {
    text-align: center;
    padding: var(--spacing-lg);
    background-color: rgba(255, 255, 255, 0.8);
    border-radius: var(--radius-lg);
    max-width: 700px;
    margin: 0 auto;
    backdrop-filter: blur(10px);
}

.cta-text {
    font-size: 1.125rem;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-md);
    font-weight: 500;
}

.form-tip {
    display: block;
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    background-color: #EEF2FF;
    border-left: 3px solid #8B5CF6;
    border-radius: var(--radius-sm);
    color: var(--dark-gray);
    font-size: 0.875rem;
    line-height: 1.6;
}

/* ===== Process Section ===== */
.process {
    background-color: var(--off-white);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-lg);
    max-width: 1100px;
    margin: 0 auto;
}

.step {
    text-align: center;
}

.step-bubble {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #2563EB 0%, #7C3AED 100%);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    font-weight: 700;
    margin: 0 auto var(--spacing-sm);
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

.step h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--spacing-xs);
}

.step p {
    color: var(--dark-gray);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* ===== Contact & Devis Section ===== */
.contact-devis {
    background-color: var(--off-white);
}

.form-toggle {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.toggle-btn {
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border: 2px solid var(--primary);
    background-color: transparent;
    color: var(--primary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
}

.toggle-btn:hover {
    background-color: var(--primary-light);
    color: var(--white);
    border-color: var(--primary-light);
}

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

.form-container {
    display: none;
    max-width: 700px;
    margin: 0 auto;
    background-color: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.form-container.active {
    display: block;
}

.contact-form,
.devis-form {
    width: 100%;
}

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--primary);
    font-weight: 600;
    font-size: 0.9rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem;
    border: 2px solid var(--light-gray);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
    background-color: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(92, 109, 124, 0.1);
}

.form-group textarea {
    resize: vertical;
}

.form-helper {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--dark-gray);
}

.form-helper a {
    color: var(--accent);
    text-decoration: underline;
}

.form-helper a:hover {
    color: var(--primary);
}

.form-response-time {
    text-align: center;
    margin-top: var(--spacing-md);
    font-size: 0.95rem;
    color: var(--dark-gray);
    font-weight: 500;
}

/* ===== Matériaux Section ===== */
.materiaux {
    background-color: var(--white);
}

.materiaux .section-subtitle {
    color: var(--dark-gray);
    font-size: 1.125rem;
}

.materiaux-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
    max-width: 900px;
    margin: 0 auto;
}

.materiau-card {
    padding: var(--spacing-lg);
    background-color: var(--white);
    border: 2px solid var(--light-gray);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.materiau-card:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.materiau-title {
    font-size: 2rem;
    font-weight: 700;
    color: #5514eb;
    margin-bottom: var(--spacing-xs);
}

.materiau-description {
    color: var(--dark-gray);
    margin-bottom: var(--spacing-md);
    line-height: 1.5;
}

.materiau-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.materiau-features li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-xs);
    color: var(--dark-gray);
    line-height: 1.5;
}

.materiau-features svg {
    flex-shrink: 0;
    margin-top: 2px;
}

.feature-positive svg {
    stroke: #10B981;
}

.feature-negative svg {
    stroke: #EF4444;
}

/* ===== FAQ Section ===== */
.faq {
    background-color: var(--off-white);
}

.faq-container {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--white);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background-color: transparent;
    border: none;
    cursor: pointer;
    text-align: left;
    transition: var(--transition);
}

.faq-question:hover {
    background-color: var(--off-white);
}

.faq-icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--primary);
    color: var(--white);
    transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
    transform: rotate(90deg);
}

.faq-icon svg {
    stroke: var(--white);
}

.faq-question-text {
    flex: 1;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--primary);
    line-height: 1.5;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
    padding: 0 var(--spacing-md);
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 var(--spacing-md) var(--spacing-md);
}

.faq-answer p {
    color: var(--dark-gray);
    line-height: 1.7;
    margin-bottom: var(--spacing-sm);
}

.faq-answer p:last-child {
    margin-bottom: 0;
}

.faq-answer ul {
    list-style: disc;
    margin-left: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.faq-answer ul li {
    color: var(--dark-gray);
    line-height: 1.7;
    margin-bottom: 0.5rem;
}

.faq-answer strong {
    color: var(--primary);
    font-weight: 600;
}

.faq-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: var(--spacing-sm);
}

.faq-links li {
    margin-bottom: 0 !important;
}

.faq-links a {
    color: var(--primary);
    text-decoration: underline;
    font-weight: 500;
    transition: var(--transition);
}

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

/* ===== About Page ===== */
.about-hero {
    padding: calc(80px + var(--spacing-lg)) 0 var(--spacing-lg);
    background: linear-gradient(135deg, var(--off-white) 0%, var(--light-gray) 100%);
    text-align: center;
}

.about-hero h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

.about-content {
    padding: var(--spacing-xl) 0;
}

.about-grid {
    max-width: 900px;
    margin: 0 auto;
}

.about-section {
    margin-bottom: var(--spacing-xl);
}

.about-section h2 {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: var(--spacing-md);
}

.about-section p {
    font-size: 1.125rem;
    color: var(--dark-gray);
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
}

/* Equipment Card */
.equipment-card {
    background-color: var(--off-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-top: var(--spacing-md);
}

.equipment-card h3 {
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

.equipment-card p {
    color: var(--dark-gray);
    line-height: 1.7;
}

/* About CTA */
.about-cta {
    text-align: center;
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: var(--radius-lg);
    color: var(--white);
}

.about-cta h2 {
    font-size: 2rem;
    color: var(--white);
    margin-bottom: var(--spacing-sm);
}

.about-cta p {
    font-size: 1.125rem;
    color: var(--light-gray);
    margin-bottom: var(--spacing-md);
}

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

/* CTA Buttons - Better visibility on dark background */
.btn-cta-primary {
    background-color: var(--white);
    color: var(--primary);
    border: 2px solid var(--white);
}

.btn-cta-primary:hover {
    background-color: var(--off-white);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

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

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

/* Active nav link */
.nav-links a.active {
    color: var(--primary);
    font-weight: 600;
}

/* ===== Footer ===== */
.footer {
    background-color: var(--primary);
    color: var(--white);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-section h4 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.footer-section p,
.footer-section a {
    color: var(--light-gray);
    margin-bottom: 0.5rem;
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--primary-light);
    color: var(--gray);
}

/* ===== Media Queries ===== */

/* Tablet (768px) */
@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .form-container {
        padding: var(--spacing-xl);
    }
}

/* Mobile (max-width: 768px) */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--white);
        flex-direction: column;
        padding: var(--spacing-sm);
        box-shadow: var(--shadow-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

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

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

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

    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }

    .btn {
        width: 100%;
    }
}

/* Large Desktop (1400px+) */
@media (min-width: 1400px) {
    .container {
        max-width: 1320px;
    }
}