:root {
    --bg: #fafafa;
    --text: #1a1a1a;
    --text-muted: #666666;
    --border: #e5e7eb;
    --accent: #3b82f6;
    --card-bg: #ffffff;
    --img-bg: #f8f9fa;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #111111;
        --text: #f3f4f6;
        --text-muted: #9ca3af;
        --border: #374151;
        --accent: #60a5fa;
        --card-bg: #1f2937;
        --img-bg: #111827;
        --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.2);
        --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
    }
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 1.5rem 3rem 1.5rem;
}

header {
    padding: 1.5rem 0;
    margin-bottom: 3rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    background: rgba(250, 250, 250, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 100;
}

@media (prefers-color-scheme: dark) {
    header {
        background: rgba(17, 17, 17, 0.85);
    }
}

.logo {
    font-size: 1.6rem;
    font-weight: 800;
    background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 50%, #ec4899 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    letter-spacing: -0.05em;
    display: inline-block;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    font-size: 0.95rem;
    font-weight: 500;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--text);
}


.apps-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.app-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
    box-shadow: var(--shadow);
}

.app-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: var(--accent);
}

.app-image-container {
    width: 100%;
    height: 280px;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: var(--img-bg);
    border-bottom: 1px solid var(--border);
}

.app-image-container.icon-mode {
    padding: 2rem;
}

.app-image-container.screenshot-mode {
    padding: 1rem;
}

.app-icon {
    width: 100px;
    height: 100px;
    object-fit: contain;
    border-radius: 20px;
    box-shadow: var(--shadow);
}

.app-screenshot {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.app-info {
    padding: 1.5rem;
    text-align: center;
}

.app-info h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.app-info p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.5;
    margin: 0;
}

footer {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Responsive fallback for mobile */
@media (max-width: 600px) {
    .apps-grid {
        grid-template-columns: 1fr;
    }
}