/* Salvus - Netflix Dark Premium Edition */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;600;700;800&display=swap');

:root {
    --bg-black: #050505;
    --bg-dark: #0f1115;
    --bg-card: #1a1d23;
    --primary: #6366f1;
    --primary-glow: rgba(99, 102, 241, 0.4);
    --text-white: #ffffff;
    --text-dim: #94a3b8;
    --accent: #a855f7;
    --radius-lg: 16px;
    --transition: all 0.4s cubic-bezier(0.2, 1, 0.3, 1);
}

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

body {
    font-family: 'Plus Jakarta Sans', sans-serif;
    background-color: var(--bg-black);
    color: var(--text-white);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header Flottant avec Flou */
.site-header {
    background: rgba(5, 5, 5, 0.8);
    backdrop-filter: blur(20px);
    padding: 1.25rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    text-decoration: none;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -1.5px;
}

nav a {
    color: var(--text-dim);
    text-decoration: none;
    font-weight: 600;
    margin-left: 2rem;
    font-size: 0.9rem;
    transition: var(--transition);
}

nav a:hover {
    color: var(--text-white);
}

/* Hero Section Style Streaming */
.hero {
    min-height: 75vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: linear-gradient(to right, var(--bg-black) 35%, transparent 100%), 
                radial-gradient(circle at 80% 20%, var(--primary-glow) 0%, transparent 50%);
    position: relative;
    margin-bottom: -4rem;
}

.hero h1 {
    font-size: clamp(2.5rem, 8vw, 4.8rem);
    font-weight: 800;
    line-height: 0.95;
    margin-bottom: 1.5rem;
    max-width: 900px;
    letter-spacing: -3px;
}

/* Grilles & Cartes avec Images */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
    padding: 2.5rem 0;
}

.card {
    background-color: var(--bg-card);
    background-size: cover;
    background-position: center;
    border-radius: 14px;
    overflow: hidden;
    position: relative;
    transition: var(--transition);
    aspect-ratio: 16/10;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 1.5rem;
    cursor: pointer;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.card:hover {
    transform: scale(1.05) translateY(-5px);
    z-index: 10;
    border-color: var(--primary);
    box-shadow: 0 25px 50px rgba(0,0,0,0.9), 0 0 25px var(--primary-glow);
}

/* L'overlay assure la lisibilité du texte sur n'importe quelle image */
.card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, 
        rgba(5, 5, 5, 0.95) 0%, 
        rgba(5, 5, 5, 0.4) 50%, 
        transparent 100%
    );
    z-index: 1;
    transition: var(--transition);
}

.card:hover .card-overlay {
    background: linear-gradient(to top, 
        rgba(99, 102, 241, 0.45) 0%, 
        rgba(5, 5, 5, 0.6) 100%
    );
}

.card-content {
    position: relative;
    z-index: 2;
}

/* Boutons & Interaction */
.btn-primary, button[type="submit"] {
    background: var(--primary);
    color: white;
    padding: 1rem 2.2rem;
    border-radius: 10px;
    border: none;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
}

.btn-primary:hover {
    background: #7477ff;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px var(--primary-glow);
}

/* Mise en page du Lecteur (Learning) */
.learning-grid {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 2.5rem;
    margin-top: 2rem;
}

.video-player {
    background: #000;
    border-radius: 24px;
    aspect-ratio: 16/9;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.1);
}

.content-pane {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 24px;
    border: 1px solid rgba(255,255,255,0.05);
}

/* Authentification */
.auth-form {
    background: rgba(26, 29, 35, 0.6);
    backdrop-filter: blur(15px);
    padding: 4rem;
    border-radius: 30px;
    max-width: 500px;
    margin: 6rem auto;
    border: 1px solid rgba(255,255,255,0.1);
    box-shadow: 0 40px 100px rgba(0,0,0,0.5);
}

input, textarea, select {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 1.1rem;
    color: white;
    border-radius: 12px;
    width: 100%;
    margin-top: 0.5rem;
    margin-bottom: 1.5rem;
}

input:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(255,255,255,0.1);
}

@media (max-width: 1100px) {
    .learning-grid { grid-template-columns: 1fr; }
}
/* --- Compléments pour le Header --- */

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-left, .header-right {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.main-nav {
    display: flex;
    gap: 1.5rem;
}

.user-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.user-name {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-white);
}

.logout-btn {
    background: transparent;
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #ef4444;
    padding: 0.4rem 1rem;
    border-radius: 6px;
    font-family: inherit;
    font-weight: 600;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.logout-btn:hover {
    background: #ef4444;
    color: white;
    border-color: #ef4444;
}

.inline-form {
    display: inline;
    margin: 0 !important;
    padding: 0 !important;
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
}

.login-link {
    text-decoration: none;
    color: var(--text-dim);
    font-weight: 600;
    font-size: 0.9rem;
}

.cta-nav {
    padding: 0.6rem 1.2rem !important;
    font-size: 0.85rem !important;
}

.site-footer {
    padding: 4rem 0;
    text-align: center;
    border-top: 1px solid rgba(255,255,255,0.05);
    margin-top: 6rem;
    color: var(--text-dim);
    font-size: 0.8rem;
}