#marketplace-page {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
    padding-bottom: 4rem;
}

.marketplace-hero {
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.1);
    box-shadow: 0 20px 50px -10px rgba(49, 46, 129, 0.5);
}

.marketplace-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.4) 0%, transparent 70%);
    filter: blur(60px);
    z-index: 0;
}

.hero-content {
    z-index: 1;
    max-width: 60%;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    background: linear-gradient(to right, #fff, #a5b4fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    color: #c7d2fe;
    font-size: 1rem;
    line-height: 1.5;
    margin-bottom: 2rem;
}

.hero-stats {
    display: flex;
    gap: 2rem;
}

.stat-box {
    background: rgba(0,0,0,0.3);
    padding: 0.75rem 1.25rem;
    border-radius: 12px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.1);
}

.stat-value {
    font-size: 1.2rem;
    font-weight: 700;
    color: #fff;
    display: block;
}

.stat-label {
    font-size: 0.75rem;
    color: #a5b4fc;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.marketplace-tabs {
    display: flex;
    gap: 1rem;
    background: var(--bg-surface);
    padding: 0.5rem;
    border-radius: 12px;
    width: fit-content;
    border: 1px solid var(--border);
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    font-size: 0.9rem;
    font-weight: 600;
    padding: 0.6rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.tab-btn:hover {
    color: var(--text-primary);
    background: rgba(255,255,255,0.05);
}

.tab-btn.active {
    background: var(--accent);
    color: white;
    box-shadow: 0 4px 15px var(--accent-glow);
}

.section-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.section-icon {
    color: var(--accent);
}

.section-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.marketplace-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.extension-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1.5rem;
    position: relative;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.extension-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
    box-shadow: 0 10px 30px -10px rgba(0,0,0,0.5);
}

.card-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.ext-icon-box {
    width: 54px;
    height: 54px;
    background: var(--bg-base);
    border-radius: 12px;
    padding: 8px;
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
}

.ext-icon {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.type-badge {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    padding: 4px 8px;
    border-radius: 6px;
    letter-spacing: 0.5px;
}

.type-image { color: #38bdf8; background: rgba(56, 189, 248, 0.1); border: 1px solid rgba(56, 189, 248, 0.2); }
.type-book { color: #f472b6; background: rgba(244, 114, 182, 0.1); border: 1px solid rgba(244, 114, 182, 0.2); }

.ext-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0.5rem 0 0.25rem 0;
}

.ext-meta {
    font-size: 0.8rem;
    color: var(--text-tertiary);
    font-family: monospace;
}

.card-footer {
    margin-top: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}

.ext-size {
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

.install-btn {
    background: var(--accent);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    transition: 0.2s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.install-btn:hover {
    background: #7c3aed; 
    box-shadow: 0 0 15px var(--accent-glow);
}

.install-btn.installed {
    background: var(--bg-base);
    color: #ef4444;
    border: 1px solid var(--border);
}
.install-btn.installed:hover {
    background: rgba(239, 68, 68, 0.1);
    border-color: #ef4444;
}

.spinner {
    width: 14px;
    height: 14px;
    animation: rotate 1s linear infinite;
    stroke: currentColor;
}
@keyframes rotate { 100% { transform: rotate(360deg); } }

.hidden { display: none !important; }
.loading-state { text-align: center; padding: 4rem; color: var(--text-tertiary); }