:root {
    /* Color Palette - Light Theme */
    --bg-dark: #f6f8fa; /* Presque blanc */
    --bg-card: #ffffff;
    --bg-card-hover: #ffffff;
    --bg-nav: rgba(246, 248, 250, 0.8);
    --primary: #2a99c4; /* Blue primary */
    --primary-hover: #1e7fa8;
    --primary-glow: rgba(42, 153, 196, 0.15);
    --secondary: #ff8c00;
    --secondary-hover: #e07b00;
    --secondary-glow: rgba(255, 140, 0, 0.15);
    --text-light: #0f172a; /* Main text (dark slate) */
    --text-muted: #5e6b7e; /* Slate gray */
    --border-color: rgba(0, 0, 0, 0.06);
    --border-hover: rgba(42, 153, 196, 0.3);
    
    /* Layout & Spacing */
    --max-width: 1200px;
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Transitions */
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base Styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-light);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    display: flex;
    flex-direction: column;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-light);
}

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

ul {
    list-style: none;
}

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

/* Utilities */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.text-gradient {
    background: linear-gradient(135deg, var(--text-light) 40%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-accent-gradient {
    background: linear-gradient(135deg, #2a99c4 0%, #0066ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.badge {
    display: inline-block;
    padding: 0.35rem 0.85rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: rgba(42, 153, 196, 0.08);
    color: var(--primary);
    border: 1px solid rgba(42, 153, 196, 0.15);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.85rem 1.8rem;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: none;
    gap: 0.5rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, #1e83ab 100%);
    color: #ffffff;
    box-shadow: 0 4px 14px var(--primary-glow);
    font-weight: 700;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(42, 153, 196, 0.35);
    background: linear-gradient(135deg, #3eb1de 0%, #1b7ba2 100%);
}

.btn-secondary {
    background: #ffffff;
    color: var(--text-light);
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}

.btn-secondary:hover {
    background: #f1f5f9;
    border-color: rgba(0,0,0,0.15);
    transform: translateY(-2px);
}

.btn-orange {
    background: linear-gradient(135deg, var(--secondary) 0%, #ff7300 100%);
    color: #ffffff;
    box-shadow: 0 4px 14px var(--secondary-glow);
}

.btn-orange:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 140, 0, 0.3);
}

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

.animate-fade-in-up {
    animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Header & Navigation */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: var(--bg-nav);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-smooth);
}

header.scrolled {
    padding: 0.5rem 0;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
    transition: var(--transition-smooth);
}

header.scrolled .nav-wrapper {
    height: 60px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.logo svg {
    width: 32px;
    height: 32px;
    fill: var(--primary);
    filter: drop-shadow(0 0 6px var(--primary-glow));
}

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

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted);
    position: relative;
    padding: 0.5rem 0;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: var(--transition-smooth);
    box-shadow: 0 0 6px var(--primary-glow);
}

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

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--text-light);
    margin: 5px 0;
    transition: var(--transition-smooth);
}

/* Hero Section */
.hero {
    padding: 180px 0 100px 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -10%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(42, 153, 196, 0.08) 0%, rgba(0,0,0,0) 70%);
    z-index: -1;
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -10%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255, 140, 0, 0.04) 0%, rgba(0,0,0,0) 70%);
    z-index: -1;
    pointer-events: none;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content {
    opacity: 0;
}

.hero-title {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
}

.hero-title span {
    display: block;
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    max-width: 540px;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 2.5rem;
}

.hero-stats {
    display: flex;
    gap: 3rem;
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
}

.stat-item h3 {
    font-size: 1.75rem;
    color: var(--primary);
    margin-bottom: 0.25rem;
}

.stat-item p {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-visual {
    position: relative;
    opacity: 0;
    transform: translateY(30px);
}

.hero-visual-wrapper {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0,0,0,0.15), 0 0 40px rgba(42, 153, 196, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.hero-visual-wrapper img {
    width: 100%;
    transition: var(--transition-smooth);
}

.hero-visual-wrapper:hover img {
    transform: scale(1.02);
}

.glow-effect {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background: linear-gradient(135deg, rgba(42,153,196,0.06) 0%, rgba(0,0,0,0) 50%, rgba(255,140,0,0.03) 100%);
    pointer-events: none;
    z-index: 2;
}

/* Features Section */
.section {
    padding: 100px 0;
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem auto;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.05rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.5rem 2rem;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(800px circle at var(--x, 0) var(--y, 0), rgba(42, 153, 196, 0.08), transparent 40%);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-hover);
    box-shadow: 0 10px 30px rgba(42, 153, 196, 0.08);
}

.feature-icon-wrapper {
    width: 56px;
    height: 56px;
    background: rgba(42, 153, 196, 0.05);
    border: 1px solid rgba(42, 153, 196, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    transition: var(--transition-smooth);
}

.feature-card:hover .feature-icon-wrapper {
    background: rgba(42, 153, 196, 0.1);
    border-color: var(--primary);
    box-shadow: 0 0 12px var(--primary-glow);
}

.feature-icon-wrapper svg {
    width: 24px;
    height: 24px;
    fill: var(--text-light);
    transition: var(--transition-smooth);
}

.feature-card:hover .feature-icon-wrapper svg {
    fill: var(--primary);
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

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

/* Pricing Section */
.pricing-section {
    background: linear-gradient(180deg, var(--bg-dark) 0%, #edf1f5 50%, var(--bg-dark) 100%);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    align-items: stretch;
}

.pricing-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 3rem 2rem;
    display: flex;
    flex-direction: column;
    position: relative;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 20px rgba(0,0,0,0.02);
}

.pricing-card:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 0, 0, 0.12);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.pricing-card.popular {
    border-color: var(--primary);
    background: linear-gradient(180deg, #f3f9fc 0%, var(--bg-card) 100%);
    box-shadow: 0 10px 30px rgba(42, 153, 196, 0.1);
}

.pricing-card.popular::before {
    content: 'Plus Populaire';
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(90deg, var(--primary) 0%, #1e83ab 100%);
    color: #ffffff;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.35rem 1.2rem;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    box-shadow: 0 4px 15px rgba(42, 153, 196, 0.25);
}

.pricing-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.pricing-card h3 span {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 400;
    margin-top: 0.25rem;
}

.pricing-price {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 800;
    margin: 1.5rem 0;
    display: flex;
    align-items: baseline;
    color: var(--text-light);
}

.pricing-card.popular .pricing-price {
    color: var(--primary);
}

.pricing-price span {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-left: 0.25rem;
}

.pricing-features {
    margin: 1.5rem 0 2.5rem 0;
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    flex-grow: 1;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.95rem;
}

.pricing-features li svg {
    width: 18px;
    height: 18px;
    fill: var(--primary);
    flex-shrink: 0;
}

.pricing-features li.disabled {
    color: var(--text-muted);
    opacity: 0.5;
}

.pricing-features li.disabled svg {
    fill: var(--text-muted);
}

/* Download Section */
.download-section {
    position: relative;
    overflow: hidden;
}

.download-wrapper {
    background: radial-gradient(circle at top right, rgba(42, 153, 196, 0.05), transparent 50%), linear-gradient(135deg, #f0f4f8 0%, #ffffff 100%);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 4rem 3.5rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
}

.download-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.download-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.download-content p {
    color: var(--text-muted);
    margin-bottom: 2rem;
}

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

.apk-badge-wrapper {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.apk-size-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-align: center;
}

.install-steps {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.step-card {
    display: flex;
    gap: 1.25rem;
    background: #ffffff;
    border: 1px solid var(--border-color);
    padding: 1.25rem;
    border-radius: 12px;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 10px rgba(0,0,0,0.01);
}

.step-card:hover {
    background: #ffffff;
    border-color: rgba(42, 153, 196, 0.3);
    box-shadow: 0 4px 15px rgba(42, 153, 196, 0.08);
}

.step-num {
    width: 36px;
    height: 36px;
    background: rgba(42, 153, 196, 0.1);
    border: 1px solid rgba(42, 153, 196, 0.2);
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-weight: 700;
    flex-shrink: 0;
}

.step-details h4 {
    font-size: 1.05rem;
    margin-bottom: 0.25rem;
}

.step-details p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* FAQ Section (Accordion) */
.faq-wrapper {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin-bottom: 1rem;
    overflow: hidden;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 10px rgba(0,0,0,0.01);
}

.faq-item:hover {
    border-color: rgba(0, 0, 0, 0.12);
}

.faq-item.active {
    border-color: var(--border-hover);
    box-shadow: 0 5px 20px rgba(42, 153, 196, 0.05);
}

.faq-question {
    width: 100%;
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
}

.faq-question h3 {
    font-size: 1.1rem;
    font-weight: 600;
    padding-right: 1.5rem;
    transition: var(--transition-smooth);
}

.faq-item:hover .faq-question h3 {
    color: var(--primary);
}

.faq-icon {
    width: 20px;
    height: 20px;
    fill: var(--text-muted);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    flex-shrink: 0;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
    fill: var(--primary);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-answer-inner {
    padding: 0 1.5rem 1.5rem 1.5rem;
    color: var(--text-muted);
    font-size: 0.95rem;
    border-top: 1px solid rgba(0, 0, 0, 0.03);
    padding-top: 1rem;
}

/* SEO Content Block */
.seo-block {
    border-top: 1px solid var(--border-color);
    padding: 5rem 0 3rem 0;
    font-size: 0.85rem;
    color: var(--text-muted);
    order: 10;
}

.seo-block h3 {
    font-size: 1rem;
    margin-bottom: 0.75rem;
    color: var(--text-light);
}

.seo-text-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
}

.seo-text-item p {
    margin-bottom: 0.75rem;
}

/* Footer - Dark contrast premium footer */
footer {
    background-color: #0b101a;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 4rem 0 2rem 0;
    color: #cbd5e1;
    order: 11;
}

footer h4 {
    color: #ffffff;
    font-size: 1rem;
    margin-bottom: 1.25rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

footer .logo {
    color: #ffffff;
}

footer .logo svg {
    fill: var(--primary);
    filter: drop-shadow(0 0 6px var(--primary-glow));
}

footer p {
    color: #94a3b8;
}

footer a {
    color: #94a3b8;
}

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

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand .logo {
    margin-bottom: 1.25rem;
}

.footer-brand p {
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    max-width: 320px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links a {
    font-size: 0.9rem;
}

.footer-links a:hover {
    padding-left: 4px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding-top: 2rem;
    font-size: 0.85rem;
    color: #64748b;
}

.footer-bottom-links {
    display: flex;
    gap: 1.5rem;
}

/* Mobile Responsive Adjustments */
@media (max-width: 992px) {
    html {
        font-size: 15px;
    }
    
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.8rem;
    }
    
    .hero-desc {
        margin: 0 auto 2rem auto;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .download-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .download-content {
        text-align: center;
    }
    
    .download-buttons {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--bg-dark);
        flex-direction: column;
        padding: 3rem 1.5rem;
        transition: var(--transition-smooth);
        border-top: 1px solid var(--border-color);
    }
    
    header.scrolled .nav-menu {
        top: 60px;
        height: calc(100vh - 60px);
    }
    
    .nav-menu.open {
        left: 0;
    }
    
    .nav-menu .btn {
        width: 100%;
        margin-top: 1.5rem;
    }
    
    .hero-title {
        font-size: 2.4rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .download-wrapper {
        padding: 2.5rem 1.5rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}