:root {
    --bg-main: #09090b;
    --surface-light: rgba(255, 255, 255, 0.05);
    --surface-border: rgba(255, 255, 255, 0.1);
    --primary: #ef4444;
    --primary-glow: rgba(239, 68, 68, 0.5);
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --radius-lg: 16px;
    --radius-md: 12px;
}

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

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Background Effects */
.bg-gradient {
    position: fixed;
    top: -20%; left: -10%;
    width: 60%; height: 60%;
    background: radial-gradient(circle, var(--primary-glow) 0%, transparent 60%);
    filter: blur(100px);
    z-index: -1;
    opacity: 0.5;
}

/* Navbar (Glassmorphism) */
nav {
    background: rgba(9, 9, 11, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--surface-border);
    padding: 20px 5%;
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 800;
    color: #fff;
    text-decoration: none;
    letter-spacing: 1px;
}
.nav-brand span {
    color: var(--primary);
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: 0.3s ease;
    position: relative;
}

.nav-links a:hover, .nav-links a.active {
    color: #fff;
}
.nav-links a::after {
    content: '';
    position: absolute;
    width: 0; height: 2px;
    background: var(--primary);
    bottom: -5px; left: 0;
    transition: 0.3s ease;
}
.nav-links a:hover::after, .nav-links a.active::after {
    width: 100%;
}

/* Container */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 0;
    flex: 1;
}

/* Typography */
h1.section-title {
    font-size: 2.5rem;
    margin-bottom: 30px;
    font-weight: 700;
    background: -webkit-linear-gradient(45deg, #fff, #a1a1aa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Grid Layouts */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

/* Glass Card */
.card {
    background: var(--surface-light);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-lg);
    padding: 20px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    backdrop-filter: blur(10px);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5), 0 0 15px var(--primary-glow);
    border-color: rgba(239, 68, 68, 0.3);
}

.card img.thumb {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--radius-md);
    margin-bottom: 15px;
    transition: transform 0.5s ease;
}
.card:hover img.thumb {
    transform: scale(1.05);
}

.card h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 20px;
    flex-grow: 1;
}

/* Buttons */
.btn {
    display: inline-block;
    background: var(--primary);
    color: #fff;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    text-align: center;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}
.btn:hover {
    background: #dc2626;
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.5);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
    box-shadow: none;
}
.btn-outline:hover {
    background: rgba(239, 68, 68, 0.1);
    box-shadow: 0 0 10px rgba(239, 68, 68, 0.2);
}

/* Single Page Details */
.detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}
@media(max-width: 768px) {
    .detail-grid { grid-template-columns: 1fr; }
}

.detail-img {
    width: 100%;
    border-radius: var(--radius-lg);
    border: 1px solid var(--surface-border);
}

.variant-box {
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--surface-border);
    padding: 15px;
    border-radius: var(--radius-md);
    margin-bottom: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Footer */
footer {
    text-align: center;
    padding: 30px;
    color: var(--text-secondary);
    border-top: 1px solid var(--surface-border);
    background: rgba(0,0,0,0.5);
    margin-top: auto;
}