/* css/showcase.css */
.showcase-page {
    background-color: var(--color-bg-panel);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Navigation */
.showcase-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 3rem;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 100;
    background: rgba(20, 20, 23, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.back-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.3s ease;
}

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

.nav-brand {
    font-family: var(--font-heading);
    font-weight: 800;
    letter-spacing: 2px;
}

/* Hero Section */
.showcase-hero {
    position: relative;
    padding: 10rem 3rem 6rem;
    text-align: center;
    background: radial-gradient(circle at top, rgba(245, 158, 11, 0.1) 0%, transparent 60%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 10;
}

.badge {
    display: inline-block;
    padding: 0.4rem 1rem;
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    color: var(--color-plumb-primary);
    border: 1px solid rgba(245, 158, 11, 0.3);
    background: rgba(245, 158, 11, 0.05);
}

.hero-title {
    font-size: clamp(2.5rem, 4vw, 4rem);
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
}

.highlight {
    color: var(--color-plumb-primary);
}

.hero-desc {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.hero-grid-bg {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: 1;
    pointer-events: none;
    mask-image: linear-gradient(to bottom, black 40%, transparent 100%);
    -webkit-mask-image: linear-gradient(to bottom, black 40%, transparent 100%);
}

/* The Grid */
.showcase-grid-container {
    padding: 4rem 3rem 8rem;
    max-width: 1600px;
    margin: 0 auto;
}

.concept-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 3rem;
}

/* Concept Cards */
.concept-card {
    background: var(--color-bg-dark);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    overflow: hidden;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
}

.concept-card:hover {
    transform: translateY(-8px);
    border-color: rgba(245, 158, 11, 0.3);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), 0 0 40px rgba(245, 158, 11, 0.1);
}

.card-image-wrapper {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
    background: #1a1a1e;
}

.card-thumb {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s ease;
}

.concept-card:hover .card-thumb {
    transform: scale(1.05);
}

.card-overlay {
    position: absolute;
    inset: 0;
    background: rgba(10, 10, 12, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-smooth);
    backdrop-filter: blur(4px);
}

.concept-card:hover .card-overlay {
    opacity: 1;
}

.card-overlay span {
    font-family: var(--font-heading);
    font-weight: 600;
    padding: 0.8rem 1.5rem;
    border: 1px solid var(--color-plumb-primary);
    border-radius: 4px;
    color: var(--color-plumb-primary);
    background: rgba(245, 158, 11, 0.1);
    transform: translateY(20px);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1) 0.1s;
}

.concept-card:hover .card-overlay span {
    transform: translateY(0);
}

.card-meta {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.card-header {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    margin-bottom: 0.8rem;
}

.concept-num {
    font-family: var(--font-heading);
    font-weight: 800;
    color: var(--text-secondary);
    opacity: 0.5;
    font-size: 0.9rem;
}

.concept-name {
    font-size: 1.3rem;
    letter-spacing: -0.5px;
    color: var(--text-primary);
}

.concept-style {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-top: auto;
}

/* Responsive */
@media (max-width: 768px) {
    .showcase-nav {
        padding: 1rem 1.5rem;
    }

    .showcase-hero {
        padding: 8rem 1.5rem 4rem;
    }

    .showcase-grid-container {
        padding: 2rem 1.5rem 4rem;
    }

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