/* ========================================
   YELLUP NAVBAR PREMIUM V3.0
   Navbar standardisée pour tous les modules
   Design: Apple-style, sobre, glassmorphism
======================================== */

/* Variables globales */
:root {
    /* Couleurs principales */
    --navbar-bg: rgba(10, 10, 15, 0.8);
    --navbar-bg-scrolled: rgba(10, 10, 15, 0.95);
    --navbar-border: rgba(255, 255, 255, 0.06);
    --navbar-text: #FFFFFF;
    --navbar-text-hover: #B7BCC7;
    --navbar-dropdown-bg: rgba(15, 15, 20, 0.98);
    --navbar-dropdown-hover: rgba(255, 255, 255, 0.05);
    
    /* Accents */
    --accent-violet: #9333EA;
    --accent-cyan: #06B6D4;
    
    /* Spacing */
    --navbar-height: 64px;
    --navbar-padding: 4rem;
    --navbar-padding-mobile: 1.5rem;
}

/* Reset navbar */
.navbar-yellup * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ========================================
   NAVBAR PRINCIPALE
======================================== */
.navbar-yellup {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--navbar-height);
    background: var(--navbar-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--navbar-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--navbar-padding);
    z-index: 1000;
    transition: background 0.3s ease, box-shadow 0.3s ease;
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Inter', sans-serif;
}

.navbar-yellup.scrolled {
    background: var(--navbar-bg-scrolled);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
}

/* Logo */
.navbar-yellup-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--navbar-text);
    transition: opacity 0.2s ease;
}

.navbar-yellup-logo:hover {
    opacity: 0.8;
}

.navbar-yellup-logo-text {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.navbar-yellup-logo-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.navbar-yellup-logo-icon svg {
    width: 100%;
    height: 100%;
}

/* ========================================
   LIENS NAVIGATION
======================================== */
.navbar-yellup-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.navbar-yellup-link {
    color: var(--navbar-text-hover);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 400;
    transition: color 0.2s ease;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.navbar-yellup-link:hover {
    color: var(--navbar-text);
}

/* CTA principal */
.navbar-yellup-cta {
    background: linear-gradient(135deg, var(--accent-violet), var(--accent-cyan));
    color: var(--navbar-text) !important;
    font-weight: 500;
    padding: 0.75rem 1.5rem !important;
    border-radius: 12px;
    position: relative;
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.3s ease;
}

.navbar-yellup-cta::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255,255,255,0.3) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
    pointer-events: none;
}

.navbar-yellup-cta:hover::before {
    width: 300px;
    height: 300px;
}

.navbar-yellup-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 24px rgba(147, 51, 234, 0.4);
}

/* ========================================
   DROPDOWNS
======================================== */
.navbar-yellup-dropdown {
    position: relative;
}

.navbar-yellup-dropdown-arrow {
    margin-left: 4px;
    opacity: 0.6;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.navbar-yellup-dropdown:hover .navbar-yellup-dropdown-arrow {
    opacity: 1;
    transform: rotate(180deg);
}

.navbar-yellup-dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    min-width: 220px;
    background: var(--navbar-dropdown-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--navbar-border);
    border-radius: 12px;
    padding: 0.5rem;
    opacity: 0;
    visibility: hidden;
    transform: translateX(-50%) translateY(-10px);
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    z-index: 1001;
}

.navbar-yellup-dropdown:hover .navbar-yellup-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.navbar-yellup-dropdown-item {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--navbar-text-hover);
    text-decoration: none;
    font-size: 0.9rem;
    border-radius: 8px;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.navbar-yellup-dropdown-item:hover {
    background: var(--navbar-dropdown-hover);
    color: var(--navbar-text);
    transform: translateX(4px);
}

/* ========================================
   MENU HAMBURGER MOBILE
======================================== */
.navbar-yellup-burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
    z-index: 1002;
}

.navbar-yellup-burger span {
    width: 24px;
    height: 2px;
    background: var(--navbar-text);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.navbar-yellup-burger.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

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

.navbar-yellup-burger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* ========================================
   RESPONSIVE MOBILE
======================================== */
@media (max-width: 968px) {
    .navbar-yellup {
        padding: 0 var(--navbar-padding-mobile);
    }
    
    .navbar-yellup-burger {
        display: flex;
    }
    
    .navbar-yellup-links {
        position: fixed;
        top: var(--navbar-height);
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--navbar-dropdown-bg);
        backdrop-filter: blur(20px) saturate(180%);
        -webkit-backdrop-filter: blur(20px) saturate(180%);
        border-top: 1px solid var(--navbar-border);
        padding: 2rem var(--navbar-padding-mobile);
        gap: 0;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-20px);
        transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
        max-height: calc(100vh - var(--navbar-height));
        overflow-y: auto;
    }
    
    .navbar-yellup-links.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    
    .navbar-yellup-link {
        width: 100%;
        padding: 1rem;
        justify-content: space-between;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    
    .navbar-yellup-dropdown {
        width: 100%;
    }
    
    .navbar-yellup-dropdown-menu {
        position: static;
        transform: none;
        opacity: 0;
        visibility: hidden;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease, opacity 0.3s ease, visibility 0.3s ease;
        margin-top: 0.5rem;
        background: rgba(255, 255, 255, 0.02);
    }
    
    .navbar-yellup-dropdown.active .navbar-yellup-dropdown-menu {
        opacity: 1;
        visibility: visible;
        max-height: 500px;
    }
    
    .navbar-yellup-dropdown.active .navbar-yellup-dropdown-arrow {
        transform: rotate(180deg);
    }
    
    .navbar-yellup-cta {
        margin-top: 1rem;
        text-align: center;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .navbar-yellup-logo-text {
        font-size: 1.25rem;
    }
    
    .navbar-yellup-logo-icon {
        width: 32px;
        height: 32px;
    }
}

/* ========================================
   ANIMATIONS ENTRÉE
======================================== */
@keyframes navbar-fade-in {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.navbar-yellup {
    animation: navbar-fade-in 0.6s ease-out;
}