:root {
    --primary-color: #2563eb;
    --danger-color: #dc2626;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-main: #1e293b;
    --border-color: #e2e8f0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    display: flex;
    justify-content: center;
    padding: 40px 20px;
    margin: 0;
}

#app {
    width: 100%;
    max-width: 800px;
    background: var(--card-bg);
    padding: 32px;
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

h2, h3 {
    margin-top: 0;
    color: #0f172a;
}

.grid-row {
    display: grid;
    grid-template-columns: 100px 1fr 160px;
    gap: 16px;
    align-items: center;
    padding: 12px 8px;
    border-bottom: 1px solid var(--border-color);
}

.header {
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    color: #64748b;
    border-bottom: 2px solid var(--border-color);
}

.add-container {
    display: grid;
    grid-template-columns: 100px 1fr 160px;
    gap: 16px;
    margin-top: 20px;
    padding: 16px;
    background: #f1f5f9;
    border-radius: 8px;
}

input {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
}

input:focus {
    border-color: var(--primary-color);
    ring: 2px solid #bfdbfe;
}

button {
    cursor: pointer;
    padding: 8px 16px;
    border-radius: 6px;
    border: none;
    font-weight: 500;
    font-size: 14px;
    transition: all 0.2s;
}

button:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

button:not([style*="red"]) {
    background-color: var(--primary-color);
    color: white;
}

button[style*="red"] {
    background-color: transparent !important;
    color: var(--danger-color) !important;
}

button[style*="red"]:hover {
    background-color: #fee2e2 !important;
}

code {
    font-family: "SFMono-Regular", Consolas, monospace;
    font-size: 0.9em;
    color: var(--primary-color);
}

.main-search-section {
    display: flex;
    gap: 12px;
    margin-bottom: 40px;
    padding-bottom: 40px;
    border-bottom: 2px solid var(--border-color);
}

#main-search {
    flex: 1;
    padding: 16px 20px;
    font-size: 1.2rem;
    border-radius: 10px;
    border: 2px solid var(--border-color);
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.main-search-section button {
    padding: 0 30px;
    font-size: 1.1rem;
    background-color: var(--primary-color);
}

footer {
    margin-top: 50px;
    text-align: center;
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 10px;
}

.footer-links a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.footer-links a:hover {
    text-decoration: underline;
}

footer p {
    color: #64748b;
    margin: 0;
}