:root {
    --geist-font: 'Geist', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --vercel-black: #000000;
    --vercel-white: #ffffff;
    --vercel-gray-100: #111111;
    --vercel-gray-200: #333333;
    --vercel-gray-300: #888888;
    --vercel-gray-400: #a1a1a1;
    --border-color: rgba(255, 255, 255, 0.08);
    --blue-glow: #0070f3;
    --pink-glow: #ff007f;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: var(--geist-font);
}

body {
    background-color: var(--vercel-black);
    color: var(--vercel-white);
    overflow-x: hidden;
    min-height: 100vh;
}

/* Grille et effets de fond signatures Vercel */
.vercel-grid {
    position: fixed;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.012) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.012) 1px, transparent 1px);
    background-size: 64px 64px;
    background-position: center top;
    mask-image: radial-gradient(circle at 50% 25%, black 40%, transparent 90%);
    -webkit-mask-image: radial-gradient(circle at 50% 25%, black 40%, transparent 90%);
    z-index: 0;
    pointer-events: none;
}

.glow-effect {
    position: fixed;
    top: -150px;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 300px;
    background: radial-gradient(circle, rgba(0, 112, 243, 0.15) 0%, transparent 70%);
    z-index: 0;
    pointer-events: none;
}

/* Barre de Navigation Épurée */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    border-bottom: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    z-index: 100;
}

.nav-container {
    max-width: 1200px;
    height: 100%;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.brand-logo {
    width: 24px;
    height: 24px;
    object-fit: contain;
}

.brand-name {
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: -0.5px;
}

.version-tag {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-color);
    color: var(--vercel-gray-300);
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 50px;
    font-weight: 500;
}

.links {
    display: flex;
    align-items: center;
    gap: 24px;
}

.links a {
    color: var(--vercel-gray-300);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 400;
    transition: color 0.15s ease;
}

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

/* Boutons Vercel */
.btn-vercel {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 18px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.15s ease;
    cursor: pointer;
}

.btn-primary {
    background-color: var(--vercel-white);
    color: var(--vercel-black);
    border: 1px solid var(--vercel-white);
}

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

.btn-secondary {
    background-color: transparent;
    color: var(--vercel-gray-300);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    color: var(--vercel-white);
    border-color: var(--vercel-white);
}

.btn-ghost {
    background-color: transparent;
    color: var(--vercel-gray-300);
    border: 1px solid transparent;
}

.btn-ghost:hover {
    background-color: rgba(255, 255, 255, 0.04);
    color: var(--vercel-white);
}

/* Section Hero */
.hero {
    position: relative;
    padding-top: 160px;
    padding-bottom: 60px;
    z-index: 1;
    text-align: center;
}

.hero-content {
    max-width: 850px;
    margin: 0 auto;
    padding: 0 24px;
}

.announcement-banner {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    padding: 4px 12px;
    border-radius: 100px;
    text-decoration: none;
    margin-bottom: 32px;
    transition: border-color 0.15s ease;
}

.announcement-banner:hover {
    border-color: rgba(255, 255, 255, 0.2);
}

.banner-badge {
    background: var(--blue-glow);
    color: var(--vercel-white);
    font-size: 0.7rem;
    font-weight: 600;
    padding: 1px 6px;
    border-radius: 50px;
    text-transform: uppercase;
}

.banner-text {
    color: var(--vercel-gray-300);
    font-size: 0.75rem;
    font-weight: 400;
}

.banner-arrow {
    color: var(--vercel-gray-300);
    font-size: 0.75rem;
}

.main-title {
    font-size: 4rem;
    font-weight: 800;
    letter-spacing: -2px;
    line-height: 1.05;
    margin-bottom: 24px;
}

.gradient-text {
    background: linear-gradient(180deg, #fff 30%, var(--vercel-gray-300) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    color: var(--vercel-gray-300);
    font-size: 1.15rem;
    line-height: 1.6;
    max-width: 640px;
    margin: 0 auto 36px auto;
    font-weight: 400;
}

.cta-group {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

/* Grille de métriques */
.metrics {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 24px 80px 24px;
    z-index: 1;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    padding: 24px 0;
}

.metric-item {
    text-align: center;
    border-right: 1px solid var(--border-color);
}

.metric-item:last-child {
    border-right: none;
}

.metric-value {
    font-size: 1.8rem;
    font-weight: 600;
    letter-spacing: -0.5px;
}

.metric-label {
    color: var(--vercel-gray-300);
    font-size: 0.8rem;
    margin-top: 4px;
}

/* Grille des Fonctionnalités */
.features {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    padding: 80px 24px;
    z-index: 1;
}

.section-header {
    text-align: left;
    margin-bottom: 48px;
    max-width: 600px;
}

.section-header h2 {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -1px;
    margin-bottom: 12px;
}

.section-header p {
    color: var(--vercel-gray-300);
    font-size: 0.95rem;
    line-height: 1.5;
}

.features-vercel-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.large-card {
    grid-column: span 2;
    background: var(--vercel-gray-100);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 36px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    min-height: 240px;
}

.small-card {
    grid-column: span 1;
    background: var(--vercel-gray-100);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 36px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    min-height: 240px;
}

.card-body .card-tag {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--vercel-gray-300);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: block;
    margin-bottom: 12px;
}

.card-body h3 {
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: -0.5px;
    margin-bottom: 8px;
}

.card-body p {
    color: var(--vercel-gray-300);
    font-size: 0.85rem;
    line-height: 1.5;
}

/* Zone finale de conversion */
.cta-footer-zone {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 24px 100px 24px;
    z-index: 1;
}

.cta-footer-box {
    border: 1px solid var(--border-color);
    background: linear-gradient(180deg, rgba(0,0,0,0) 0%, rgba(255,255,255,0.01) 100%);
    border-radius: 12px;
    padding: 60px 24px;
    text-align: center;
}

.cta-footer-box h2 {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -1px;
    margin-bottom: 12px;
}

.cta-footer-box p {
    color: var(--vercel-gray-300);
    font-size: 0.95rem;
    margin-bottom: 24px;
}

/* Pied de page Vercel style */
.footer {
    position: relative;
    border-top: 1px solid var(--border-color);
    background-color: var(--vercel-black);
    padding: 32px 0;
    z-index: 1;
}

.footer-inside {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--vercel-gray-300);
}

.footer-left a {
    color: var(--vercel-gray-300);
    text-decoration: none;
}

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

.footer-separator {
    margin: 0 12px;
    color: var(--vercel-gray-200);
}

.footer-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.status-indicator {
    width: 8px;
    height: 8px;
    background-color: #00e676;
    border-radius: 50px;
    display: inline-block;
    box-shadow: 0 0 8px #00e676;
}

/* Adaptations écrans mobiles */
@media (max-width: 900px) {
    .main-title { font-size: 2.8rem; letter-spacing: -1px; }
    .features-vercel-grid { grid-template-columns: 1fr; }
    .large-card, .small-card { grid-column: span 1; min-height: auto; padding: 24px; }
    .metrics-grid { grid-template-columns: 1fr; gap: 16px; }
    .metric-item { border-right: none; border-bottom: 1px solid var(--border-color); padding-bottom: 12px; }
    .metric-item:last-child { border-bottom: none; padding-bottom: 0; }
    .links { display: none; }
}