/* ============================================================
   LUCERNYS — zenterovia.eu
   Elegant Parisian IT & AI Consulting
   Primary: #2a3180  Accent: #1f71b8  Light: #dee9fc
   ============================================================ */

:root {
    --primary: #2a3180;
    --primary-dark: #1e2460;
    --accent: #1f71b8;
    --accent-light: #dee9fc;
    --bg: #ffffff;
    --bg-alt: #f5f7fb;
    --bg-dark: #0e1126;
    --text: #2c2c3a;
    --text-light: #6b7280;
    --text-white: #ffffff;
    --border: #e2e6ef;
    --gold: #c9a96e;
    --success: #49C050;
    --radius: 8px;
    --radius-lg: 16px;
    --shadow: 0 4px 24px rgba(42,49,128,.08);
    --shadow-lg: 0 12px 48px rgba(42,49,128,.12);
    --transition: .3s cubic-bezier(.4,0,.2,1);
    --font-display: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* RESET */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text);
    background: var(--bg);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary); }

/* TYPOGRAPHY */
h1, h2, h3, h4 { font-family: var(--font-display); color: var(--primary); line-height: 1.25; font-weight: 700; }
h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.6rem, 4vw, 2.4rem); margin-bottom: .5em; }
h3 { font-size: clamp(1.2rem, 3vw, 1.6rem); margin-bottom: .4em; }
p + p { margin-top: 1em; }

/* CONTAINER */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--bg-dark); color: var(--text-white); }
.section-dark h2, .section-dark h3 { color: var(--text-white); }

.text-center { text-align: center; }
.subtitle { color: var(--text-light); font-size: 1.125rem; max-width: 640px; margin: 0 auto 2em; }

/* HEADER */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255,255,255,.96);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    transition: box-shadow var(--transition);
}
.site-header.scrolled { box-shadow: var(--shadow); }
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}
.logo {
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: .02em;
}
.logo span { color: var(--accent); }
.nav-links { display: flex; gap: 32px; list-style: none; }
.nav-links a {
    font-size: .9375rem;
    font-weight: 500;
    color: var(--text);
    position: relative;
    padding-bottom: 4px;
}
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    width: 0; height: 2px;
    background: var(--accent);
    transition: width var(--transition);
}
.nav-links a:hover { color: var(--primary); }
.nav-links a:hover::after { width: 100%; }

/* MOBILE NAV */
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--primary); margin: 5px 0; transition: var(--transition); }

@media (max-width: 768px) {
    .nav-toggle { display: block; }
    .nav-links {
        position: fixed;
        top: 72px; left: 0; right: 0;
        flex-direction: column;
        background: var(--bg);
        padding: 24px;
        gap: 20px;
        border-bottom: 1px solid var(--border);
        transform: translateY(-120%);
        transition: transform var(--transition);
        box-shadow: var(--shadow-lg);
    }
    .nav-links.open { transform: translateY(0); }
}

/* HERO */
.hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--bg-dark) 100%);
    color: var(--text-white);
    padding: 120px 0 100px;
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: -50%; right: -20%;
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(31,113,184,.2) 0%, transparent 70%);
    border-radius: 50%;
}
.hero h1 { color: var(--text-white); margin-bottom: .5em; }
.hero p { font-size: 1.2rem; opacity: .9; max-width: 600px; margin-bottom: 2em; }

/* BUTTONS */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: .9375rem;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
}
.btn-primary {
    background: var(--accent);
    color: var(--text-white);
}
.btn-primary:hover {
    background: var(--primary);
    color: var(--text-white);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(42,49,128,.2);
}
.btn-outline {
    background: transparent;
    border: 2px solid var(--text-white);
    color: var(--text-white);
}
.btn-outline:hover {
    background: var(--text-white);
    color: var(--primary);
}
.btn-gold {
    background: var(--gold);
    color: var(--bg-dark);
}
.btn-gold:hover {
    background: #b8954f;
    transform: translateY(-2px);
}

/* CARDS */
.grid { display: grid; gap: 32px; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }

.card {
    background: var(--bg);
    border-radius: var(--radius-lg);
    padding: 32px;
    border: 1px solid var(--border);
    transition: all var(--transition);
}
.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent);
}
.card-icon {
    width: 56px; height: 56px;
    border-radius: 12px;
    background: var(--accent-light);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    color: var(--accent);
}
.card-icon svg { width: 28px; height: 28px; }
.card h3 { margin-bottom: .5em; }

/* STATS */
.stats { display: flex; justify-content: center; gap: 64px; flex-wrap: wrap; padding: 48px 0; }
.stat { text-align: center; }
.stat-number { font-family: var(--font-display); font-size: 2.5rem; font-weight: 700; color: var(--accent); }
.stat-label { font-size: .9rem; color: var(--text-light); margin-top: 4px; }

/* ABOUT / COMPANY */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
@media (max-width: 768px) { .about-grid { grid-template-columns: 1fr; } }
.about-visual {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: var(--radius-lg);
    height: 380px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-family: var(--font-display);
    font-size: 4rem;
    font-weight: 700;
    opacity: .85;
}
.about-content h2 { margin-bottom: .5em; }
.about-content p { margin-bottom: 1em; }
.values-list { list-style: none; padding: 0; }
.values-list li {
    padding: 8px 0 8px 28px;
    position: relative;
    color: var(--text);
}
.values-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 14px;
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
}

/* LEAD FORM */
.form-section { background: linear-gradient(135deg, var(--primary), var(--bg-dark)); padding: 80px 0; }
.form-card {
    max-width: 560px;
    margin: 0 auto;
    background: var(--bg);
    border-radius: var(--radius-lg);
    padding: 48px 40px;
    box-shadow: var(--shadow-lg);
}
.form-card h2 { text-align: center; margin-bottom: .5em; }
.form-card .subtitle { margin-bottom: 1.5em; text-align: center; }
.form-group { margin-bottom: 20px; }
.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 6px;
    font-size: .9rem;
    color: var(--text);
}
.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    font-family: var(--font-body);
    font-size: .9375rem;
    color: var(--text);
    background: var(--bg);
    transition: border-color var(--transition);
}
.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(31,113,184,.1);
}
.form-submit {
    width: 100%;
    padding: 14px;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
}
.form-submit:hover { background: var(--primary); transform: translateY(-1px); }
.form-consent {
    font-size: .8rem;
    color: var(--text-light);
    margin-top: 12px;
    text-align: center;
}

/* CONTACT */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
@media (max-width: 768px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-item { display: flex; gap: 16px; align-items: flex-start; margin-bottom: 24px; }
.contact-icon {
    width: 48px; height: 48px; min-width: 48px;
    border-radius: 12px;
    background: var(--accent-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
}
.contact-icon svg { width: 22px; height: 22px; }

/* FOOTER */
.site-footer {
    background: var(--bg-dark);
    color: rgba(255,255,255,.7);
    padding: 64px 0 0;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 48px; }
@media (max-width: 768px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { font-size: .9rem; line-height: 1.6; }
.footer-col h4 { color: white; font-size: 1rem; font-family: var(--font-body); font-weight: 600; margin-bottom: 16px; }
.footer-col ul { list-style: none; }
.footer-col a { color: rgba(255,255,255,.6); font-size: .9rem; display: block; padding: 4px 0; }
.footer-col a:hover { color: white; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.1);
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    font-size: .85rem;
}
.footer-social { display: flex; gap: 16px; }
.footer-social a {
    width: 40px; height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,.08);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,.6);
    transition: all var(--transition);
}
.footer-social a:hover { background: var(--accent); color: white; }
.footer-social svg { width: 18px; height: 18px; }

/* PAGE HEADER (inner pages) */
.page-header {
    background: linear-gradient(135deg, var(--primary), var(--bg-dark));
    color: var(--text-white);
    padding: 100px 0 60px;
    text-align: center;
}
.page-header h1 { color: var(--text-white); margin-bottom: .25em; }
.page-header p { opacity: .8; }
.breadcrumb { font-size: .85rem; opacity: .7; margin-bottom: 12px; }
.breadcrumb a { color: var(--text-white); text-decoration: underline; }

/* CONTENT PAGES */
.page-content { padding: 64px 0; }
.page-content h2 { margin-top: 2em; margin-bottom: .5em; }
.page-content h3 { margin-top: 1.5em; }
.page-content ul, .page-content ol { padding-left: 1.5em; margin: 1em 0; }
.page-content li { margin-bottom: .5em; }
.content-narrow { max-width: 800px; margin: 0 auto; }

/* FAQ */
.faq-item {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 12px;
    overflow: hidden;
}
.faq-question {
    width: 100%;
    background: var(--bg);
    border: none;
    padding: 20px 24px;
    text-align: left;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background var(--transition);
}
.faq-question:hover { background: var(--bg-alt); }
.faq-question svg { width: 20px; height: 20px; transition: transform var(--transition); flex-shrink: 0; margin-left: 16px; }
.faq-question.active svg { transform: rotate(180deg); }
.faq-answer { padding: 0 24px 20px; color: var(--text-light); display: none; }
.faq-answer.open { display: block; }

/* MODAL */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.5);
    backdrop-filter: blur(4px);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
}
.modal-overlay.active { display: flex; }
.modal-box {
    background: var(--bg);
    border-radius: var(--radius-lg);
    padding: 40px;
    max-width: 520px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
}
.modal-close {
    position: absolute;
    top: 16px; right: 16px;
    background: none; border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-light);
}

/* THANK YOU */
.thankyou-check {
    width: 80px; height: 80px;
    border-radius: 50%;
    background: var(--success);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}
.thankyou-check svg { width: 40px; height: 40px; }

/* UTILITIES */
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }
.mt-4 { margin-top: 32px; }
.hidden { display: none !important; }

/* ANIMATIONS */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}
.animate { animation: fadeInUp .6s ease forwards; }
.animate-delay-1 { animation-delay: .15s; opacity: 0; }
.animate-delay-2 { animation-delay: .3s; opacity: 0; }
.animate-delay-3 { animation-delay: .45s; opacity: 0; }