:root {
    --bg-body: #f8fafc;
    --text-main: #0f172a;
    --text-secondary: #64748b;
    --accent-color: #4f46e5;
    --card-bg: #ffffff;
    --border-color: #e2e8f0;
}

[data-theme="dark"] {
    --bg-body: #0f172a;
    --text-main: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #818cf8;
    --card-bg: #1e293b;
    --border-color: #334155;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-body);
    color: var(--text-main);
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: background-color 0.3s, color 0.3s;
}

header {
    padding: 2rem 1rem;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--card-bg);
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 1rem;
    flex-grow: 1;
}

h1 {
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.025em;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.theme-toggle {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 0.5rem;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s;
}

.theme-toggle:hover {
    background-color: var(--border-color);
}

.tools-grid {
    display: grid;
    gap: 1.5rem;
    margin-top: 2rem;
}

.tool-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1.5rem;
    transition: transform 0.2s, box-shadow 0.2s;
    text-decoration: none;
    color: inherit;
    display: block;
}

.tool-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    border-color: var(--accent-color);
}

.tool-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--accent-color);
}

.tool-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
}

.in-progress {
    margin-top: 3rem;
    padding: 2rem;
    border: 2px dashed var(--border-color);
    border-radius: 0.75rem;
    text-align: center;
    color: var(--text-secondary);
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    background-color: var(--accent-color);
    color: white;
    margin-bottom: 0.5rem;
}

footer {
    text-align: center;
    padding: 2rem;
    border-top: 1px solid var(--border-color);
    background-color: var(--card-bg);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    margin: 0 0.5rem;
}

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