/* NK Transport VTC — Thème premium noir & blanc */

:root {
    --noir: #0a0a0a;
    --anthracite: #111111;
    --charbon: #1a1a1a;
    --gris-fonce: #2a2a2a;
    --gris: #6b6b6b;
    --blanc: #ffffff;
    --blanc-90: rgba(255, 255, 255, 0.9);
    --blanc-70: rgba(255, 255, 255, 0.7);
    --blanc-50: rgba(255, 255, 255, 0.5);
    --blanc-20: rgba(255, 255, 255, 0.2);
    --whatsapp: #25D366;
    --ombre: 0 4px 24px rgba(0, 0, 0, 0.3);
    --ombre-hover: 0 8px 32px rgba(0, 0, 0, 0.4);
    --bordure: rgba(255, 255, 255, 0.12);
    --radius: 6px;
    --transition: 0.25s ease;
}

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

html {
    scroll-behavior: smooth;
}

/* Barre de défilement — thème noir-blanc */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--blanc-50) var(--noir);
}

*::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

*::-webkit-scrollbar-track {
    background: var(--noir);
}

*::-webkit-scrollbar-thumb {
    background: var(--blanc-20);
    border-radius: 5px;
    border: 2px solid var(--noir);
}

*::-webkit-scrollbar-thumb:hover {
    background: var(--blanc-50);
}

*::-webkit-scrollbar-thumb:active {
    background: var(--blanc-70);
}

*::-webkit-scrollbar-corner {
    background: var(--noir);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--blanc-90);
    background: var(--noir);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--bordure);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--blanc);
    text-decoration: none;
    display: flex;
    align-items: center;
}

.logo img,
.logo .logo-img {
    height: 96px;
    width: auto;
    display: block;
    object-fit: contain;
}

.logo span {
    color: var(--blanc);
    opacity: 0.9;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

.nav-menu a {
    text-decoration: none;
    color: var(--blanc-70);
    font-weight: 500;
    font-size: 0.9375rem;
    transition: var(--transition);
}

.nav-menu a:hover {
    color: var(--blanc);
}

.btn-nav,
.btn-whatsapp {
    background: var(--whatsapp) !important;
    color: white !important;
    padding: 0.5rem 1rem !important;
    border-radius: var(--radius) !important;
    font-size: 0.875rem !important;
}

.btn-nav:hover,
.btn-whatsapp:hover {
    background: #1da851 !important;
    color: white !important;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 22px;
    height: 2px;
    background: var(--blanc);
    border-radius: 1px;
}

/* Hero */
.hero {
    position: relative;
    padding: 8rem 0 4rem;
    background: var(--noir);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: url('https://genevaways.com/wp-content/uploads/2025/05/Transfer-Geneva-to-Grindelwald-1024x768.jpeg') center/cover no-repeat;
    opacity: 0.35;
}

.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, var(--noir) 0%, transparent 40%, var(--noir) 100%);
}

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

.hero h1 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--blanc);
    margin-bottom: 1rem;
    line-height: 1.3;
}

.hero-subtitle {
    font-size: 1rem;
    color: var(--blanc-70);
    margin-bottom: 2rem;
    max-width: 540px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-family: inherit;
    font-size: 0.9375rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background: var(--blanc);
    color: var(--noir);
}

.btn-primary:hover {
    background: var(--blanc-90);
    box-shadow: var(--ombre-hover);
}

.btn-secondary {
    background: transparent;
    color: var(--blanc);
    border: 2px solid var(--blanc-50);
}

.btn-secondary:hover {
    background: var(--blanc-20);
    border-color: var(--blanc-70);
}

.btn-large {
    padding: 0.875rem 1.75rem;
}

.btn-outline {
    background: transparent;
    color: var(--blanc);
    border: 2px solid var(--blanc-50);
}

.btn-outline:hover {
    background: var(--blanc-20);
    color: var(--blanc);
}

/* Sections */
section {
    padding: 4rem 0;
}

section h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--blanc);
    margin-bottom: 0.5rem;
    text-align: center;
}

.section-intro {
    text-align: center;
    color: var(--blanc-70);
    font-size: 1rem;
    margin-bottom: 2.5rem;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
}

/* Services */
.services {
    background: var(--noir);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.service-card {
    background: var(--charbon);
    border-radius: var(--radius);
    border: 1px solid var(--bordure);
    transition: var(--transition);
    overflow: hidden;
}

.service-card:hover {
    border-color: var(--blanc-50);
    box-shadow: var(--ombre-hover);
}

.service-card:hover .service-image img {
    transform: scale(1.03);
}

.service-image {
    aspect-ratio: 16/10;
    overflow: hidden;
    background: var(--anthracite);
}

.service-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform var(--transition);
}

.service-card h3,
.service-card p {
    padding: 0 1.5rem;
}

.service-card h3 {
    padding-top: 1.25rem;
    padding-bottom: 0.5rem;
}

.service-card p {
    padding-bottom: 1.5rem;
}

.service-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--blanc);
    margin-bottom: 0.5rem;
}

.service-card p {
    color: var(--blanc-70);
    font-size: 0.9375rem;
    line-height: 1.6;
}

/* Avantages */
.advantages {
    background: var(--anthracite);
    color: var(--blanc);
}

.advantages h2 {
    color: var(--blanc);
}

.advantages .section-intro {
    color: var(--blanc-70);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
}

.advantage {
    text-align: center;
    padding: 1.5rem 1rem;
    border-bottom: 1px solid var(--bordure);
}

.advantage:hover {
    border-bottom-color: var(--blanc-50);
}

.advantage strong {
    display: block;
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--blanc);
    margin-bottom: 0.5rem;
}

.advantage p {
    color: var(--blanc-70);
    font-size: 0.9375rem;
}

/* Formulaire */
.reservation {
    background: var(--charbon);
}

.reservation-form {
    position: relative;
    max-width: 640px;
    margin: 0 auto;
    background: var(--anthracite);
    padding: 2.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--bordure);
}

.reservation h2,
.reservation .section-intro {
    color: var(--blanc);
}

.reservation .section-intro {
    color: var(--blanc-70);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

/* Honeypot anti-spam : invisible pour les utilisateurs */
.form-group-honeypot {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
    margin: 0;
    padding: 0;
    opacity: 0;
    pointer-events: none;
}

.form-feedback {
    margin-bottom: 1rem;
    padding: 0.75rem;
    border-radius: var(--radius);
    font-size: 0.9375rem;
    min-height: 0;
}

.form-feedback.form-feedback--error {
    background: rgba(220, 53, 69, 0.15);
    border: 1px solid rgba(220, 53, 69, 0.5);
    color: #ff6b6b;
}

.form-feedback:empty {
    display: none;
}

/* Toasts / notifications in-page */
.toast-container {
    position: fixed;
    top: 5.5rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1100;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-width: 90vw;
    width: 380px;
    pointer-events: none;
}

.toast {
    padding: 1rem 1.25rem;
    border-radius: var(--radius);
    font-size: 0.9375rem;
    font-weight: 500;
    box-shadow: var(--ombre-hover);
    animation: toast-in 0.3s ease;
    pointer-events: auto;
}

.toast--success {
    background: rgba(34, 197, 94, 0.95);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.toast--error {
    background: rgba(185, 28, 28, 0.95);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

@keyframes toast-in {
    from {
        opacity: 0;
        transform: translateY(-12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes toast-out {
    from {
        opacity: 1;
        transform: translateY(0);
    }
    to {
        opacity: 0;
        transform: translateY(-8px);
    }
}

.form-group label {
    display: block;
    font-weight: 500;
    font-size: 0.875rem;
    margin-bottom: 0.375rem;
    color: var(--blanc-90);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.625rem 0.875rem;
    border: 1px solid var(--blanc-20);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
    background: var(--charbon);
    color: var(--blanc);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--blanc-50);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--blanc-50);
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.1);
}

/* Honeypot anti-spam : invisible pour les utilisateurs */
.form-group-honeypot {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
    margin: 0;
    padding: 0;
}

/* Feedback formulaire (erreurs de validation) */
.form-feedback {
    min-height: 1.5rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.form-feedback.form-feedback-error {
    color: #e57373;
}

.form-feedback.form-feedback-success {
    color: var(--whatsapp);
}

/* Toasts / notifications */
.toast-container {
    position: fixed;
    bottom: 5rem;
    right: 1.5rem;
    z-index: 1001;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-width: 360px;
    pointer-events: none;
}

.toast {
    pointer-events: auto;
    padding: 1rem 1.25rem;
    border-radius: var(--radius);
    background: var(--charbon);
    border: 1px solid var(--bordure);
    box-shadow: var(--ombre-hover);
    font-size: 0.9375rem;
    color: var(--blanc-90);
    animation: toast-in 0.3s ease;
}

.toast.toast-success {
    border-color: var(--whatsapp);
    background: rgba(37, 211, 102, 0.12);
}

.toast.toast-error {
    border-color: #e57373;
    background: rgba(229, 115, 115, 0.12);
}

@keyframes toast-in {
    from {
        opacity: 0;
        transform: translateY(0.5rem);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2rem;
}

.form-actions .btn {
    flex: 1;
    min-width: 180px;
}

/* Contact */
.contact {
    background: var(--noir);
}

.contact h2,
.contact .section-intro {
    color: var(--blanc);
}

.contact .section-intro {
    color: var(--blanc-70);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
}

.contact-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 1.75rem;
    background: var(--charbon);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--blanc);
    transition: var(--transition);
    border: 1px solid var(--bordure);
}

.contact-card:hover {
    border-color: var(--blanc-50);
    box-shadow: var(--ombre-hover);
}

.contact-whatsapp:hover {
    border-color: var(--whatsapp);
}

.contact-icon {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--blanc-70);
    margin-bottom: 0.5rem;
}

.contact-card strong {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--blanc);
    word-break: break-word;
}

.contact-card p {
    display: none;
}

/* Footer */
.footer {
    background: var(--noir);
    color: var(--blanc-70);
    padding: 2rem;
    text-align: center;
}

.footer p {
    font-size: 0.875rem;
}

/* Bouton WhatsApp flottant */
.float-whatsapp {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    width: 52px;
    height: 52px;
    background: var(--whatsapp);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    box-shadow: var(--ombre-hover);
    z-index: 999;
    transition: var(--transition);
}

.float-whatsapp:hover {
    transform: scale(1.05);
}

/* Tablet & petit écran */
@media (max-width: 900px) {
    .container {
        padding: 0 1.25rem;
    }

    section {
        padding: 3rem 0;
    }

    .services-grid,
    .advantages-grid {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    }
}

/* Mobile */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }

    .nav {
        height: 64px;
    }

    .nav-toggle {
        display: flex;
    }

    .logo {
        font-size: 1.1rem;
    }

    .nav-menu {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--anthracite);
        flex-direction: column;
        padding: 1rem 0;
        gap: 0;
        border-bottom: 1px solid var(--bordure);
        box-shadow: var(--ombre);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav-menu li {
        border-bottom: 1px solid var(--bordure);
    }

    .nav-menu li:last-child {
        border-bottom: none;
    }

    .nav-menu a {
        display: block;
        padding: 1rem 1.25rem;
        font-size: 1rem;
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    /* Hero mobile */
    .hero {
        padding: 5.5rem 0 2.5rem;
        min-height: auto;
    }

    .hero h1 {
        font-size: 1.5rem;
        margin-bottom: 0.75rem;
    }

    .hero-subtitle {
        font-size: 0.9375rem;
        margin-bottom: 1.5rem;
    }

    .hero-actions {
        flex-direction: column;
        gap: 0.75rem;
        width: 100%;
    }

    .hero-actions .btn {
        width: 100%;
        padding: 0.875rem 1.25rem;
        font-size: 0.9375rem;
    }

    /* Sections mobile */
    section {
        padding: 2.5rem 0;
    }

    section h2 {
        font-size: 1.25rem;
        margin-bottom: 0.75rem;
    }

    .section-intro {
        font-size: 0.9375rem;
        margin-bottom: 1.75rem;
    }

    /* Services mobile */
    .services-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .service-card {
        padding: 1.5rem;
    }

    .service-icon {
        font-size: 1.75rem;
    }

    .service-card h3 {
        font-size: 1rem;
    }

    .service-card p {
        font-size: 0.875rem;
    }

    /* Avantages mobile */
    .advantages-grid {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .advantage {
        padding: 1.25rem 1rem;
    }

    /* Formulaire mobile */
    .reservation-form {
        padding: 1.5rem;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

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

    .form-actions {
        flex-direction: column;
        gap: 0.75rem;
        margin-top: 1.5rem;
    }

    .form-actions .btn {
        width: 100%;
        min-width: unset;
        padding: 0.875rem;
    }

    /* Contact mobile */
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .contact-card {
        padding: 1.5rem 1rem;
    }

    .contact-card strong {
        font-size: 0.875rem;
    }

    /* Footer mobile */
    .footer {
        padding: 1.5rem 1rem;
    }

    .footer p {
        font-size: 0.8125rem;
    }

    /* Bouton WhatsApp mobile — zone tactile + safe area */
    .float-whatsapp {
        width: 56px;
        height: 56px;
        bottom: max(1rem, env(safe-area-inset-bottom));
        right: max(1rem, env(safe-area-inset-right));
    }

    .float-whatsapp svg {
        width: 28px;
        height: 28px;
    }
}

/* Très petit écran (iPhone SE, etc.) */
@media (max-width: 380px) {
    .container {
        padding: 0 0.875rem;
    }

    .hero h1 {
        font-size: 1.35rem;
    }

    .hero-subtitle {
        font-size: 0.875rem;
    }

    section h2 {
        font-size: 1.125rem;
    }

    .service-card,
    .contact-card {
        padding: 1.25rem;
    }
}