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

:root {
    --primary: #0a0e27;
    --secondary: #1a1f3a;
    --accent: #e8b923;
    --accent-light: #f5d547;
    --text-primary: #ffffff;
    --text-secondary: #b8bcc4;
    --border: #2a2f45;
    --success: #10b981;
}

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

/* ==================== HERO SECTION ==================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    overflow: hidden;
    padding: 60px 20px;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(232, 185, 35, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(16, 185, 129, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    max-width: 1200px;
    width: 100%;
}

.hero-text h1 {
    font-family: 'Playfair Display', serif;
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 700;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #ffffff 0%, var(--accent-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
}

.hero-text .subtitle {
    font-size: 1.25rem;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 15px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.hero-text .description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
    max-width: 450px;
}

.hero-visual {
    position: relative;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(40px);
    animation: float 6s ease-in-out infinite;
}

.orb-1 {
    width: 300px;
    height: 300px;
    background: rgba(232, 185, 35, 0.3);
    animation-delay: 0s;
}

.orb-2 {
    width: 200px;
    height: 200px;
    background: rgba(16, 185, 129, 0.2);
    animation-delay: 1s;
}

.orb-3 {
    width: 250px;
    height: 250px;
    background: rgba(59, 130, 246, 0.15);
    animation-delay: 2s;
}

@keyframes float {
    0%, 100% { transform: translateY(0) translateX(0); }
    33% { transform: translateY(-30px) translateX(20px); }
    66% { transform: translateY(30px) translateX(-20px); }
}

/* ==================== FILTER NAVIGATION ==================== */
.filter-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    padding: 20px;
}

.filter-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    gap: 12px;
    overflow-x: auto;
    padding-bottom: 10px;
    scrollbar-width: none;
}

.filter-container::-webkit-scrollbar {
    display: none;
}

.filter-btn {
    padding: 10px 24px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-secondary);
    border-radius: 30px;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.3s ease;
    white-space: nowrap;
    font-family: 'Inter', sans-serif;
}

.filter-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
}

.filter-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--primary);
}

/* ==================== MAIN CONTENT ==================== */
.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 80px 20px;
}

.guitars-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
    margin: 0 auto;
}

.guitar-item {
    background: var(--secondary);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all 0.4s cubic-bezier(0.23, 1, 0.320, 1);
    opacity: 1;
    transform: translateY(0) scale(1);
    animation: cardEnter 0.6s ease-out;
}

@keyframes cardEnter {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.guitar-item.hidden {
    display: none;
}

.guitar-item:hover {
    border-color: var(--accent);
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(232, 185, 35, 0.15);
}

.guitar-image {
    position: relative;
    overflow: hidden;
    height: 400px;
    background: linear-gradient(135deg, #1a1f3a 0%, #0f1626 100%);
}

.guitar-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.guitar-item:hover .guitar-image img {
    transform: scale(1.05);
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(10, 14, 39, 0.8) 100%);
    display: flex;
    align-items: flex-end;
    padding: 20px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.guitar-item:hover .image-overlay {
    opacity: 1;
}

.price-tag {
    display: inline-block;
    background: var(--accent);
    color: var(--primary);
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
}

.guitar-content {
    padding: 30px;
}

.guitar-header {
    margin-bottom: 25px;
}

.guitar-header h2 {
    font-family: 'Playfair Display', serif;
    font-size: 1.75rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.guitar-header .brand {
    color: var(--accent);
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.specs-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 25px;
    padding-bottom: 25px;
    border-bottom: 1px solid var(--border);
}

.spec-item label {
    display: block;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.spec-item p {
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 500;
}

.description {
    margin-bottom: 20px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tag {
    display: inline-block;
    background: rgba(232, 185, 35, 0.1);
    border: 1px solid rgba(232, 185, 35, 0.3);
    color: var(--accent);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.tag:hover {
    background: var(--accent);
    color: var(--primary);
    border-color: var(--accent);
}

/* ==================== FOOTER ==================== */
.footer {
    background: var(--secondary);
    border-top: 1px solid var(--border);
    padding: 60px 20px 30px;
    margin-top: 100px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--accent);
}

.footer-section h4 {
    font-size: 1rem;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-section p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-visual {
        height: 300px;
    }

    .hero-text h1 {
        font-size: 2.5rem;
    }

    .guitars-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .filter-btn {
        padding: 8px 16px;
        font-size: 0.85rem;
    }

    .specs-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 40px 20px;
    }

    .hero-text h1 {
        font-size: 2rem;
    }

    .guitar-header h2 {
        font-size: 1.4rem;
    }

    .main-content {
        padding: 40px 20px;
    }
}