/* =========================================
   VARIABLES & RESET
========================================= */
:root {
    --clr-primary: #10B981;
    --clr-primary-hover: #059669;
    --clr-nav-bg: rgba(0, 0, 0, 0.95);
    --clr-white: #ffffff;
    --transition-speed: 0.3s;
}

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

body.bg-dark {
    background-color: #000;
    font-family: system-ui, -apple-system, sans-serif;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* =========================================
   BOUTON GLOBAL
========================================= */
.btn-primary {
    background-color: var(--clr-primary);
    color: var(--clr-white);
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    text-decoration: none;
    transition: background-color var(--transition-speed);
    display: inline-block;
}

.btn-primary:hover {
    background-color: var(--clr-primary-hover);
}

/* =========================================
   NAVBAR (HEADER)
========================================= */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    background-color: transparent;
}

.transition-all {
    transition: all var(--transition-speed) ease-in-out;
}

/* Effet au scroll (Glassmorphism) */
.navbar.scrolled {
    background-color: var(--clr-nav-bg);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
}

.navbar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 5rem; /* h-20 */
}

/* Logo */
.logo-group {
    display: flex;
    align-items: center;
    padding: 0.5rem 0;
    margin-left: -3rem; /* -ml-12 */
}

.logo-img {
    height: 4rem; /* h-16 */
    width: auto;
    object-fit: contain;
}

.transition-transform {
    transition: transform var(--transition-speed);
}

.logo-group:hover .logo-img {
    transform: scale(1.05);
}

/* --- NAVIGATION BUREAU --- */
.desktop-nav {
    display: none;
    align-items: center;
    gap: 2rem; /* gap-8 */
}

.nav-link {
    color: var(--clr-white);
    text-decoration: none;
    font-size: 0.875rem; /* text-sm */
    font-weight: 500;
    position: relative;
    transition: color var(--transition-speed);
}

.nav-link:hover, .nav-link.active {
    color: var(--clr-primary);
}

/* Ligne animée sous le lien */
.nav-underline {
    position: absolute;
    bottom: -0.25rem;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--clr-primary);
    transform: scaleX(0);
    transform-origin: left;
}

.nav-link:hover .nav-underline, .nav-link.active .nav-underline {
    transform: scaleX(1);
}

/* --- NAVIGATION MOBILE --- */
.mobile-toggle {
    display: block;
    background: none;
    border: none;
    color: var(--clr-white);
    padding: 0.5rem;
    cursor: pointer;
}

.icon {
    width: 1.5rem;
    height: 1.5rem;
}

.hidden {
    display: none !important;
}

.mobile-menu {
    padding-bottom: 1.5rem;
    background-color: var(--clr-nav-bg);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.mobile-menu-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.mobile-link {
    color: var(--clr-white);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 0.25rem;
    transition: all var(--transition-speed);
}

.mobile-link:hover {
    color: var(--clr-primary);
    background-color: rgba(255, 255, 255, 0.05);
}

.mobile-active {
    color: var(--clr-primary);
    background-color: rgba(16, 185, 129, 0.1);
}

.mobile-btn-wrapper {
    padding: 0 1rem;
}

.mobile-btn {
    width: 100%;
    text-align: center;
}

/* =========================================
   MEDIA QUERIES (RESPONSIVE)
========================================= */
@media (min-width: 768px) {
    .desktop-nav {
        display: flex;
    }
    .mobile-toggle {
        display: none;
    }
    .mobile-menu {
        display: none !important; /* Force cache sur PC */
    }
    .logo-group {
        margin-left: 0; /* Réinitialise le margin négatif sur grand écran si besoin */
    }
}