/* ============================================
   KSTP PREMIUM - STYLESHEET
   Design: Rouge, Or, Blanc - Élégant & Moderne
   ============================================ */

/* === VARIABLES CSS === */
:root {
    --color-primary: #8B0000;        /* Rouge bordeaux foncé */
    --color-primary-light: #B22222;  /* Rouge plus clair */
    --color-gold: #D4AF37;           /* Or élégant */
    --color-gold-light: #F4E5C3;     /* Or très clair */
    --color-white: #FFFFFF;
    --color-cream: #FAF8F3;          /* Blanc cassé élégant */
    --color-dark: #1A1A1A;
    --color-gray: #666666;
    --color-gray-light: #E8E8E8;
    
    --font-primary: 'Playfair Display', serif;
    --font-secondary: 'Montserrat', sans-serif;
    
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-soft: 0 4px 20px rgba(139, 0, 0, 0.1);
    --shadow-medium: 0 8px 30px rgba(139, 0, 0, 0.15);
    --shadow-strong: 0 12px 40px rgba(139, 0, 0, 0.2);
}

/* === RESET & BASE === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-secondary);
    color: var(--color-dark);
    background-color: var(--color-white);
    line-height: 1.7;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

/* === TYPOGRAPHIE === */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 700;
    line-height: 1.3;
    color: var(--color-dark);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: 1.5rem;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1.2rem;
    color: var(--color-primary);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: 1rem;
}

p {
    margin-bottom: 1.2rem;
    font-size: 1.05rem;
    color: var(--color-gray);
}

.text-gold {
    color: var(--color-gold);
}

.text-center {
    text-align: center;
}

/* === CONTENEUR === */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

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

/* === HEADER & NAVIGATION === */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: var(--shadow-medium);
    background: var(--color-white);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 0;
}

.logo {
    font-family: var(--font-primary);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo span {
    color: var(--color-gold);
}

.nav-menu {
    display: flex;
    gap: 2.5rem;
    list-style: none;
    align-items: center;
}

.nav-link {
    font-weight: 500;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-dark);
    position: relative;
    padding: 0.5rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-gold));
    transition: var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

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

/* Menu Mobile */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 0.5rem;
}

.menu-toggle span {
    width: 28px;
    height: 3px;
    background: var(--color-primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* === HERO SECTION === */
.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-top: 80px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -2;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(139, 0, 0, 0.8) 0%, rgba(26, 26, 26, 0.6) 100%);
    z-index: -1;
}

.hero-content {
    text-align: center;
    color: var(--color-white);
    z-index: 1;
    animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--color-gold);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    font-weight: 500;
}

.hero h1 {
    color: var(--color-white);
    margin-bottom: 1.5rem;
    text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.3);
}

.hero p {
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 700px;
    margin: 0 auto 2.5rem;
}

/* === BOUTONS === */
.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-family: var(--font-secondary);
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: 2px solid transparent;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-white);
    border-color: var(--color-primary);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

.btn-gold {
    background: linear-gradient(135deg, var(--color-gold), #DAA520);
    color: var(--color-white);
    border-color: var(--color-gold);
}

.btn-gold:hover {
    background: linear-gradient(135deg, #DAA520, var(--color-gold));
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(212, 175, 55, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

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

/* === SECTIONS === */
.section {
    padding: 6rem 0;
}

.section-dark {
    background: var(--color-dark);
    color: var(--color-white);
}

.section-cream {
    background: var(--color-cream);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-subtitle {
    color: var(--color-gold);
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.section-dark .section-title {
    color: var(--color-white);
}

.section-description {
    max-width: 700px;
    margin: 0 auto;
    font-size: 1.1rem;
    color: var(--color-gray);
}

.section-dark .section-description {
    color: rgba(255, 255, 255, 0.8);
}

/* === CARDS === */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.card {
    background: var(--color-white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-strong);
}

.card-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.card-content {
    padding: 2rem;
}

.card-title {
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.card-text {
    color: var(--color-gray);
    margin-bottom: 1.5rem;
}

/* === PRODUCT GRID === */
.product-filters {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

.filter-btn {
    padding: 0.8rem 2rem;
    background: transparent;
    border: 2px solid var(--color-gold);
    color: var(--color-gold);
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--color-gold);
    color: var(--color-white);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2.5rem;
}

.product-card {
    background: var(--color-white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    transition: var(--transition);
    border: 2px solid transparent;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-strong);
    border-color: var(--color-gold);
}

.product-image {
    width: 100%;
    height: 300px;
    background: var(--color-cream);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: var(--color-gold);
}

.product-info {
    padding: 1.5rem;
}

.product-category {
    font-size: 0.85rem;
    color: var(--color-gold);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.product-name {
    font-size: 1.3rem;
    color: var(--color-primary);
    margin-bottom: 0.8rem;
}

.product-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 1rem;
}

.product-description {
    font-size: 0.95rem;
    color: var(--color-gray);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

/* === FORMULAIRE === */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-dark);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 1rem 1.2rem;
    border: 2px solid var(--color-gray-light);
    border-radius: 8px;
    font-family: var(--font-secondary);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--color-white);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-gold);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 150px;
}

/* === CONTACT SECTION === */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.contact-info {
    background: var(--color-cream);
    padding: 2.5rem;
    border-radius: 15px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.contact-icon {
    font-size: 2rem;
    color: var(--color-gold);
}

.contact-details h3 {
    font-size: 1.2rem;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.contact-details p {
    color: var(--color-gray);
    margin: 0;
}

/* === FOOTER === */
.footer {
    background: var(--color-dark);
    color: var(--color-white);
    padding: 4rem 0 2rem;
}

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

.footer-section h3 {
    color: var(--color-gold);
    margin-bottom: 1.5rem;
}

.footer-section p,
.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 0.8rem;
    display: block;
}

.footer-section a:hover {
    color: var(--color-gold);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

.footer-bottom a {
    color: var(--color-gold);
}

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

.fade-in-up {
    animation: fadeInUp 0.8s ease-out;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--color-white);
        flex-direction: column;
        justify-content: flex-start;
        padding: 2rem;
        gap: 1.5rem;
        transition: var(--transition);
        box-shadow: var(--shadow-medium);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .hero {
        height: auto;
        min-height: 500px;
        margin-top: 70px;
        padding: 3rem 0;
    }
    
    .hero-subtitle {
        font-size: 0.9rem;
        letter-spacing: 2px;
    }
    
    .hero h1 {
        font-size: 1.8rem !important;
        line-height: 1.2;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .section {
        padding: 4rem 0;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container,
    .container-large {
        padding: 0 1rem;
    }
    
    .hero {
        min-height: 450px;
        margin-top: 65px;
    }
    
    .hero-subtitle {
        font-size: 0.75rem;
        letter-spacing: 1.5px;
    }
    
    h1 {
        font-size: 1.5rem !important;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .hero p {
        font-size: 0.95rem;
        line-height: 1.5;
    }
    
    .btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.85rem;
    }
}

/* === UTILITIES === */
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }