/* =========================================================
   O.N CARROSSERIE - STYLES GLOBAUX
   Utilisé par les 3 pages : Accueil, Services, Contact
   ========================================================= */

/* ========== VARIABLES ========== */
:root {
    /* Couleurs - Fonds */
    --bg-base: #0F0F11;
    --bg-elevated: #1A1A1F;
    --bg-surface: #22232A;
    --bg-surface-2: #2A2B33;

    /* Couleurs - Accents */
    --accent: #F5A524;
    --accent-hover: #FFB938;
    --accent-soft: #E76F2A;
    --accent-glow: rgba(245, 165, 36, 0.15);

    /* Couleurs - Texte */
    --text-primary: #F4F4F5;
    --text-secondary: #A1A1AA;
    --text-muted: #71717A;
    --text-dim: #52525B;

    /* Couleurs - Bordures */
    --border: #2E2E36;
    --border-light: #3F3F46;

    /* Typographie */
    --font-display: 'Oswald', 'Arial Narrow', sans-serif;
    --font-body: 'Outfit', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;

    /* Spacing */
    --container-max: 1280px;
    --container-pad: clamp(1.25rem, 4vw, 2.5rem);

    /* Effets */
    --radius-sm: 4px;
    --radius: 8px;
    --radius-lg: 16px;
    --shadow-lg: 0 25px 60px -15px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 40px rgba(245, 165, 36, 0.25);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========== RESET ========== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-base);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img, svg {
    max-width: 100%;
    display: block;
}

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

button {
    font-family: inherit;
    border: none;
    background: none;
    cursor: pointer;
    color: inherit;
}

ul {
    list-style: none;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.01em;
}

/* ========== UTILITIES ========== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding-left: var(--container-pad);
    padding-right: var(--container-pad);
}

.accent {
    color: var(--accent);
}

/* ========== BUTTONS ========== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.95rem 1.75rem;
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    border-radius: var(--radius);
    transition: all var(--transition);
    cursor: pointer;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

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

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-ghost {
    background: transparent;
    color: var(--text-primary);
    border: 1.5px solid var(--border-light);
}

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

.btn-ghost-light {
    background: transparent;
    color: var(--text-primary);
    border: 1.5px solid rgba(255, 255, 255, 0.2);
    font-family: var(--font-mono);
    font-weight: 500;
    letter-spacing: 0.05em;
}

.btn-ghost-light:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* ========== SECTION HELPERS ========== */
.section-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--accent);
    margin-bottom: 1.5rem;
}

.section-eyebrow.centered {
    justify-content: center;
}

.eyebrow-line {
    width: 32px;
    height: 1px;
    background: var(--accent);
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    text-transform: uppercase;
    margin-bottom: 1.5rem;
}

.section-title.centered {
    text-align: center;
}

.section-head {
    margin-bottom: 3.5rem;
}

/* ========== HEADER ========== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1.25rem 0;
    background: rgba(15, 15, 17, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: all var(--transition);
}

.site-header.scrolled {
    padding: 0.75rem 0;
    border-bottom-color: var(--border);
    background: rgba(15, 15, 17, 0.95);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.logo {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    font-family: var(--font-display);
    text-transform: uppercase;
    transition: opacity var(--transition);
}

.logo:hover {
    opacity: 0.85;
}

.logo-mark {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: -0.02em;
}

.logo-text {
    font-size: 1.05rem;
    font-weight: 500;
    color: var(--text-primary);
    letter-spacing: 0.05em;
}

.main-nav ul {
    display: flex;
    gap: 2.5rem;
}

.main-nav a {
    font-family: var(--font-display);
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-secondary);
    padding: 0.5rem 0;
    position: relative;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width var(--transition);
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--text-primary);
}

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

.btn-phone {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.65rem 1.15rem;
    background: var(--accent);
    color: var(--bg-base);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: var(--radius);
    transition: all var(--transition);
}

.btn-phone:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px var(--accent-glow);
}

/* ========== BURGER MENU ========== */
.burger {
    display: none;
    width: 32px;
    height: 32px;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
}

.burger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition);
}

.burger.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.burger.active span:nth-child(2) {
    opacity: 0;
}

.burger.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ========== MOBILE MENU ========== */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 85%;
    max-width: 360px;
    height: 100vh;
    background: var(--bg-elevated);
    border-left: 1px solid var(--border);
    z-index: 200;
    padding: 2rem 1.5rem;
    transition: right var(--transition-slow);
    overflow-y: auto;
}

.mobile-menu.open {
    right: 0;
}

.mobile-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 3rem;
}

.mobile-close {
    font-size: 2rem;
    color: var(--text-primary);
    line-height: 1;
    padding: 0 0.5rem;
}

.mobile-close:hover {
    color: var(--accent);
}

.mobile-menu nav ul {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.mobile-menu nav a {
    display: block;
    padding: 1rem 0;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
    transition: all var(--transition);
}

.mobile-menu nav a:hover,
.mobile-menu nav a.active {
    color: var(--accent);
    padding-left: 0.5rem;
}

.btn-phone-mobile {
    display: block;
    margin-top: 2.5rem;
    padding: 1rem;
    background: var(--accent);
    color: var(--bg-base);
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    border-radius: var(--radius);
}

.mobile-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: 150;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
}

.mobile-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

/* ========== FOOTER ========== */
.site-footer {
    background: var(--bg-elevated);
    border-top: 1px solid var(--border);
    padding: 4rem 0 0;
    margin-top: 6rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
    gap: 3rem;
    padding-bottom: 3rem;
}

.footer-brand p {
    margin-top: 1rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
    max-width: 320px;
}

.footer-logo {
    margin-bottom: 0.5rem;
}

.footer-col h4 {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--accent);
    margin-bottom: 1.25rem;
}

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

.footer-col a,
.footer-col li {
    color: var(--text-secondary);
    font-size: 0.95rem;
    transition: color var(--transition);
}

.footer-col a:hover {
    color: var(--accent);
}

.contact-list li {
    line-height: 1.5;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0;
    border-top: 1px solid var(--border);
    font-size: 0.85rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.footer-bottom a:hover {
    color: var(--accent);
}

/* ========== REVEAL ANIMATIONS ========== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 960px) {
    .main-nav,
    .btn-phone {
        display: none;
    }

    .burger {
        display: flex;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
}

@media (max-width: 600px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 0.75rem;
        text-align: center;
    }

    .btn {
        padding: 0.85rem 1.4rem;
        font-size: 0.85rem;
    }
}