@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Playfair+Display:ital,wght@0,400;0,600;0,700;1,400&display=swap');

:root {
    --primary-color: #0F172A; /* Deep Blue / Slate */
    --secondary-color: #1E293B; /* Lighter Slate */
    --accent-color: #D4AF37; /* Premium Gold */
    --text-light: #F8FAFC;
    --text-dark: #334155;
    --bg-light: #F1F5F9;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-dark);
    background-color: var(--bg-light);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Playfair Display', serif;
    color: var(--primary-color);
}

/* Header & Navigation */
header {
    background-color: var(--primary-color);
    padding: 1rem 5%;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
}

.logo {
    color: var(--accent-color);
    font-size: 1.5rem;
    font-weight: 700;
    font-family: 'Playfair Display', serif;
    text-decoration: none;
    letter-spacing: 1px;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 2rem;
}

nav a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
}

nav a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--accent-color);
    transition: var(--transition);
}

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

nav a:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    cursor: pointer;
    color: var(--text-light);
    font-size: 1.5rem;
}

/* Hero Section */
.hero {
    height: 100vh;
    background: linear-gradient(rgba(15, 23, 42, 0.8), rgba(15, 23, 42, 0.8)), url('../images/hero.png') center/cover;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 5%;
    margin-top: 60px; /* Offset for header */
}

.hero h1 {
    color: var(--text-light);
    font-size: 4rem;
    margin-bottom: 1rem;
    animation: fadeInDown 1s ease-out;
}

.hero p {
    color: var(--text-light);
    font-size: 1.2rem;
    max-width: 800px;
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease-out 0.5s both;
}

.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    background-color: var(--accent-color);
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    border-radius: 4px;
    transition: var(--transition);
    border: 2px solid var(--accent-color);
    animation: fadeInUp 1s ease-out 1s both;
}

.btn:hover {
    background-color: transparent;
    color: var(--accent-color);
}

.btn-outline {
    background-color: transparent;
    color: var(--accent-color);
    margin-left: 1rem;
}
.btn-outline:hover {
    background-color: var(--accent-color);
    color: var(--primary-color);
}

/* Sections General */
section {
    padding: 5rem 5%;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background-color: var(--accent-color);
    margin: 1rem auto 0;
}

/* Services Preview */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background: white;
    padding: 2.5rem;
    border-radius: 8px;
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.05);
    transition: var(--transition);
    border-top: 4px solid transparent;
}

.service-card:hover {
    transform: translateY(-10px);
    border-top-color: var(--accent-color);
    box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1);
}

.service-card i {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 1.5rem;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

/* Footer */
footer {
    background-color: var(--primary-color);
    color: var(--text-light);
    padding: 4rem 5% 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-col h4 {
    color: var(--accent-color);
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
}

.footer-col p, .footer-col a {
    color: #94A3B8;
    text-decoration: none;
    margin-bottom: 0.8rem;
    display: block;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: #64748B;
    font-size: 0.9rem;
}

/* Ouvrages Section */
.books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 3rem;
}

.book-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 15px 30px rgba(0,0,0,0.08);
    display: flex;
    flex-direction: column;
}

.book-img {
    height: 300px;
    background-color: var(--secondary-color);
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
}

.book-img img {
    max-height: 100%;
    box-shadow: -5px 5px 15px rgba(0,0,0,0.3);
}

.book-content {
    padding: 2rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.book-price {
    color: var(--accent-color);
    font-size: 1.5rem;
    font-weight: 700;
    margin: 1rem 0;
}

.book-content .btn {
    margin-top: auto;
    text-align: center;
}

/* Contact Form */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info {
    background: var(--primary-color);
    color: var(--text-light);
    padding: 3rem;
    border-radius: 12px;
}

.contact-info h3 {
    color: var(--accent-color);
    margin-bottom: 1.5rem;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.info-item i {
    color: var(--accent-color);
    font-size: 1.2rem;
    margin-top: 0.3rem;
}

form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

input, textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid #CBD5E1;
    border-radius: 4px;
    font-family: inherit;
    transition: var(--transition);
}

input:focus, textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.2);
}

/* Page Headers */
.page-header {
    height: 40vh;
    background: linear-gradient(rgba(15, 23, 42, 0.9), rgba(15, 23, 42, 0.9)), url('../images/hero.png') center/cover;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    margin-top: 60px;
}

.page-header h1 {
    color: var(--text-light);
    font-size: 3rem;
}

/* Animations */
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 768px) {
    .hamburger { display: block; }
    nav ul {
        position: absolute;
        top: 100%;
        left: -100%;
        width: 100%;
        background-color: var(--primary-color);
        flex-direction: column;
        text-align: center;
        padding: 2rem 0;
        transition: 0.3s;
        gap: 1.5rem;
    }
    nav ul.active { left: 0; }
    .hero h1 { font-size: 2.5rem; }
    .contact-container { grid-template-columns: 1fr; }
    .btn-outline { margin-left: 0; margin-top: 1rem; display: block; }
}