/* ==========================================================================
   ab. Digital Consulting - Styles
   ========================================================================== */

/* CSS Variables */
:root {
    --color-bg: #0a0a0a;
    --color-bg-elevated: #141414;
    --color-surface: #1a1a1a;
    --color-text: #ffffff;
    --color-text-muted: #888888;
    --color-text-subtle: #555555;
    --color-accent: #d4a855;
    --color-accent-hover: #e6bc6a;
    --color-border: #2a2a2a;
    
    --font-display: 'Syne', sans-serif;
    --font-body: 'Outfit', sans-serif;
    
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 8rem;
    
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-full: 9999px;
    
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

::selection {
    background: var(--color-accent);
    color: var(--color-bg);
}

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

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

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

/* Typography */
h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.1;
}

h1 { font-size: clamp(2.5rem, 8vw, 5rem); }
h2 { font-size: clamp(2rem, 5vw, 3.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }

em {
    font-style: normal;
    color: var(--color-accent);
}

.highlight {
    position: relative;
    color: var(--color-accent);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: 1rem 2rem;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition);
}

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

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

.btn-ghost {
    background: transparent;
    color: var(--color-text);
    border-color: var(--color-border);
}

.btn-ghost:hover {
    border-color: var(--color-text-muted);
    background: var(--color-surface);
}

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: 1.1rem;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-sm) 0;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

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

.logo-img {
    height: 32px;
    width: auto;
    filter: brightness(0) invert(1);
}

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

.nav-links a {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

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

.nav-cta {
    padding: 0.6rem 1.25rem;
    background: var(--color-surface);
    border-radius: var(--radius-full);
    color: var(--color-text) !important;
}

.nav-cta:hover {
    background: var(--color-accent) !important;
    color: var(--color-bg) !important;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl) var(--space-md);
    overflow: hidden;
}

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

.hero-gradient {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(212, 168, 85, 0.12) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 80% 60%, rgba(212, 168, 85, 0.06) 0%, transparent 40%),
        radial-gradient(ellipse 50% 30% at 20% 80%, rgba(212, 168, 85, 0.04) 0%, transparent 40%);
}

.hero-noise {
    display: none;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 80px 80px;
    mask-image: radial-gradient(ellipse 50% 50% at center, black 0%, transparent 70%);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 0.5rem 1rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.tag-dot {
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.2); }
}

.hero-title {
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.35rem);
    color: var(--color-text);
    max-width: 600px;
    margin: 0 auto var(--space-lg);
    line-height: 1.7;
}

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

.hero-scroll {
    position: absolute;
    bottom: var(--space-md);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    color: var(--color-text-subtle);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-accent), transparent);
    animation: scrollPulse 2s infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 1; height: 40px; }
    50% { opacity: 0.5; height: 60px; }
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeIn 0.8s ease forwards;
}

.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }
.delay-3 { animation-delay: 0.6s; }

@keyframes fadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Section Styles */
section {
    padding: var(--space-xl) 0;
}

.section-header {
    margin-bottom: var(--space-lg);
}

.section-tag {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-sm);
}

.section-tag-light {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.2);
}

.section-title {
    letter-spacing: -0.02em;
}

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

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 400px), 1fr));
    gap: var(--space-md);
}

.service-card {
    position: relative;
    padding: var(--space-lg);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.service-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
}

.service-number {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    font-family: var(--font-display);
    font-size: 4rem;
    font-weight: 800;
    color: var(--color-surface);
    line-height: 1;
}

.service-icon {
    width: 48px;
    height: 48px;
    color: var(--color-accent);
    margin-bottom: var(--space-md);
}

.service-icon svg {
    width: 100%;
    height: 100%;
}

.service-title {
    margin-bottom: var(--space-sm);
    font-family: var(--font-display);
}

.service-desc {
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
    line-height: 1.7;
}

.service-features {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.service-features li {
    padding: 0.4rem 0.8rem;
    background: var(--color-surface);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* Méthode Section */
.methode {
    background: var(--color-bg-elevated);
}

.methode .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}

.methode-text {
    color: var(--color-text-muted);
    line-height: 1.8;
}

.methode-text .lead {
    font-size: 1.25rem;
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

.methode-text p + p {
    margin-top: var(--space-sm);
}

.methode-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
}

.visual-block {
    padding: var(--space-lg);
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.visual-block:hover {
    transform: scale(1.05);
}

.visual-block span {
    display: block;
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: var(--space-xs);
}

.visual-block small {
    display: block;
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.visual-irl {
    border-color: var(--color-text-subtle);
}

.visual-irl span {
    color: var(--color-text);
}

.visual-ia {
    border-color: var(--color-accent);
}

.visual-ia span {
    color: var(--color-accent);
}

.visual-fusion {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent);
    border-radius: 50%;
    color: var(--color-bg);
}

.visual-fusion svg {
    width: 24px;
    height: 24px;
}

/* Trust Section */
.trust {
    padding: var(--space-lg) 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.trust .container {
    text-align: center;
}

.trust-label {
    font-size: 0.8rem;
    color: var(--color-text-subtle);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: var(--space-sm);
}

.trust-items {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-text-muted);
    font-size: 1.1rem;
}

.trust-dot {
    font-size: 0.5rem;
    color: var(--color-accent);
}

/* Contact Section */
.contact {
    position: relative;
    background: var(--color-bg);
    overflow: hidden;
}

.contact-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.contact-title {
    margin: var(--space-sm) 0 var(--space-md);
    letter-spacing: -0.02em;
}

.contact-text {
    font-size: 1.15rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
    line-height: 1.7;
}

.contact-bg {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 150%;
    height: 50%;
    background: radial-gradient(ellipse at bottom center, rgba(212, 168, 85, 0.1) 0%, transparent 60%);
}

/* Footer */
.footer {
    background: var(--color-bg-elevated);
    border-top: 1px solid var(--color-border);
    padding: var(--space-lg) 0 var(--space-md);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--color-border);
}

.footer-brand p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin-top: var(--space-xs);
}

.footer-logo {
    height: 28px;
    width: auto;
    filter: brightness(0) invert(1);
}

.footer-links {
    display: flex;
    gap: var(--space-md);
}

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

.footer-links a:hover {
    color: var(--color-text);
}

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

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

/* Responsive */
@media (max-width: 900px) {
    .methode .container {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .methode-visual {
        order: -1;
    }
}

@media (max-width: 768px) {
    :root {
        --space-lg: 3rem;
        --space-xl: 5rem;
    }
    
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--color-bg-elevated);
        padding: var(--space-md);
        border-bottom: 1px solid var(--color-border);
        gap: var(--space-sm);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero {
        padding-top: calc(var(--space-xl) + 60px);
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-cta .btn {
        width: 100%;
    }
    
    .service-card {
        padding: var(--space-md);
    }
    
    .methode-visual {
        flex-direction: column;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: var(--space-md);
    }
    
    .footer-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .trust-items {
        flex-direction: column;
        gap: var(--space-xs);
    }
    
    .trust-dot {
        display: none;
    }
}