*,
*::before,
*::after {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
}

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: #050812;
    color: #f5f5f5;
    line-height: 1.5;
}

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

.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header */

.site-header {
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(5, 8, 18, 0.95);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Nouveau : logo image 2G Sonorisation */
.logo-img {
    display: block;
    height: 40px;
    width: auto;
}

/* Ancien système texte conservé au cas où, mais plus utilisé
.logo-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 999px;
    background: linear-gradient(135deg, #ff7a00, #ff004c);
    font-size: 0.9rem;
}

.logo-text {
    font-size: 1rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}
*/

.main-nav ul {
    list-style: none;
    display: flex;
    gap: 1rem;
    padding: 0;
    margin: 0;
    font-size: 0.95rem;
}

.main-nav a {
    padding: 0.35rem 0.6rem;
    border-radius: 999px;
    border: 1px solid transparent;
}

.main-nav a.active,
.main-nav a:hover {
    border-color: rgba(255, 255, 255, 0.15);
    background: rgba(255, 255, 255, 0.04);
}

/* Layout */

.site-main {
    padding-bottom: 3rem;
}

.section {
    padding: 3rem 0;
}

.section-muted {
    background: #070b18;
}

.section-split {
    padding: 3.5rem 0;
}

/* Hero */

.hero {
    padding: 3.5rem 0 3rem;
    background: radial-gradient(circle at top left, #1c1026, #050812);
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.hero-inner {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(0, 1.25fr);
    gap: 2.5rem;
    align-items: center;
}

.hero h1 {
    font-size: clamp(2rem, 3vw, 2.5rem);
    margin: 0 0 1rem;
}

.hero p {
    margin: 0 0 1.5rem;
    color: #d1d5db;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.hero-highlights {
    list-style: none;
    padding: 0;
    margin: 0;
    color: #9ca3af;
    font-size: 0.9rem;
}

/* Cards / hero side */

.hero-side {
    display: flex;
    justify-content: flex-end;
}

.hero-card {
    background: rgba(7, 11, 24, 0.95);
    border-radius: 1rem;
    padding: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.06);
    box-shadow: 0 18px 45px rgba(0, 0, 0, 0.6);
}

.hero-card h2 {
    margin-top: 0;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.hero-card ul {
    list-style: none;
    padding: 0;
    margin: 0 0 1.25rem;
}

.hero-card li + li {
    margin-top: 0.75rem;
}

.hero-card .btn.small {
    font-size: 0.9rem;
}

/* Buttons */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    padding: 0.55rem 1.2rem;
    font-size: 0.95rem;
    border: 1px solid transparent;
    cursor: pointer;
    background: none;
    color: inherit;
}

.btn.primary {
    background: linear-gradient(135deg, #ff7a00, #ff004c);
    border-color: transparent;
    color: #fff;
}

.btn.secondary {
    border-color: rgba(255, 255, 255, 0.25);
    background: rgba(255, 255, 255, 0.02);
}

.btn.ghost {
    border-color: transparent;
}

.btn.full-width {
    width: 100%;
}

.btn:hover {
    filter: brightness(1.06);
}

/* Lists, cards, steps */

.list-check {
    list-style: none;
    padding: 0;
    margin: 0 0 1.5rem;
}

.list-check li {
    position: relative;
    padding-left: 1.4rem;
    margin-bottom: 0.5rem;
}

.list-check li::before {
    content: "✔";
    position: absolute;
    left: 0;
    top: 0;
    font-size: 0.85rem;
    color: #22c55e;
}

.card-list {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
}

.card {
    background: #070b18;
    border-radius: 0.75rem;
    padding: 1rem 1.1rem;
    border: 1px solid rgba(255, 255, 255, 0.04);
}

.card h3 {
    margin-top: 0;
    margin-bottom: 0.5rem;
}

.steps {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 1rem;
}

.steps li {
    background: #070b18;
    border-radius: 0.75rem;
    padding: 1rem 1.1rem;
    border: 1px solid rgba(255, 255, 255, 0.04);
    font-size: 0.95rem;
}

.center {
    text-align: center;
    margin-top: 1.5rem;
}

/* Forms */

.form {
    max-width: 520px;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.25rem;
    font-size: 0.9rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.55rem 0.7rem;
    border-radius: 0.4rem;
    border: 1px solid rgba(255, 255, 255, 0.14);
    background: #020617;
    color: #f9fafb;
    font: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #ff7a00;
}

/* Alerts */

.alert {
    padding: 0.8rem 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.alert.success {
    background: rgba(34, 197, 94, 0.08);
    border: 1px solid rgba(34, 197, 94, 0.4);
}

.alert.error {
    background: rgba(239, 68, 68, 0.08);
    border: 1px solid rgba(239, 68, 68, 0.4);
}

/* Footer */

.site-footer {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    background: #020617;
}

.footer-inner {
    padding: 1.5rem 0 1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: #9ca3af;
}

.logo-footer {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.25rem;
}

.logo-footer .logo-img {
    height: 36px;
    width: auto;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 0.75rem 0;
    font-size: 0.8rem;
    color: #6b7280;
}

/* Responsive */

@media (max-width: 800px) {
    .hero-inner {
        grid-template-columns: minmax(0, 1fr);
    }

    .header-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .main-nav ul {
        flex-wrap: wrap;
    }
}