:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --border-color: #30363d;
    --text-primary: #e6edf3;
    --text-muted: #8b949e;
    --accent-blue: #58a6ff;
    --accent-green: #3fb950;
    --accent-purple: #bc8cff;
    --accent-red: #f85149;
    --accent-yellow: #d29922;
    --font-mono: "SF Mono", Menlo, Consolas, Monaco, "Liberation Mono", "Lucida Console", monospace;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

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

a {
    color: var(--accent-blue);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

a code {
    color: inherit;
    font-family: inherit;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.5;
    min-height: 100vh;
    padding: 2rem 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.container {
    width: 100%;
    max-width: 900px;
}

header {
    margin-bottom: 2rem;
    text-align: center;
}

header h1 {
    font-size: 2.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--accent-blue);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

header h1 .badge {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    background: var(--bg-tertiary);
    color: var(--accent-purple);
    border: 1px solid var(--border-color);
    padding: 0.2rem 0.5rem;
    border-radius: 999px;
    vertical-align: middle;
}

header p {
    color: var(--text-muted);
    margin-top: 0.5rem;
    font-size: 1rem;
}

.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

.form-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 2fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

@media (max-width: 680px) {
    .form-grid {
        grid-template-columns: 1fr;
    }
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

input[type="text"],
select {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    padding: 0.65rem 0.85rem;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

input[type="text"]:focus,
select:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.2);
}

option:disabled {
    color: var(--text-muted);
}

.custom-server-row {
    margin-bottom: 1rem;
    display: none;
}

.custom-server-row.visible {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.submit-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-color);
}

.examples-group {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
}

.examples-group span {
    color: var(--text-muted);
}

.specs-row {
    margin-top: 0.75rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.4rem;
}

.btn-primary {
    background: #238636;
    color: #fff;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.65rem 1.5rem;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary:hover:not(:disabled) {
    background: #2ea043;
}

.btn-primary:active:not(:disabled) {
    transform: translateY(1px);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.chip-btn {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--accent-blue);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    padding: 0.2rem 0.5rem;
    cursor: pointer;
    transition: background-color 0.15s;
}

.chip-btn:hover {
    background: #30363d;
}

.output-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.output-header-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.status-badge {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    text-transform: none;
}

.status-badge.success {
    background: rgba(63, 185, 80, 0.15);
    color: var(--accent-green);
    border: 1px solid rgba(63, 185, 80, 0.4);
}

.status-badge.error {
    background: rgba(248, 81, 73, 0.15);
    color: var(--accent-red);
    border: 1px solid rgba(248, 81, 73, 0.4);
}

.status-badge.loading {
    background: rgba(210, 153, 34, 0.15);
    color: var(--accent-yellow);
    border: 1px solid rgba(210, 153, 34, 0.4);
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-muted);
    font-size: 0.8rem;
    padding: 0.35rem 0.75rem;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s;
}

.btn-secondary:hover {
    color: var(--text-primary);
    border-color: var(--text-muted);
}

.output-box {
    background: #090d13;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: #c9d1d9;
    font-family: var(--font-mono);
    font-size: 0.88rem;
    line-height: 1.55;
    padding: 1rem 1.25rem;
    overflow-x: auto;
    white-space: pre;
    min-height: 220px;
}

.output-box.empty {
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-style: italic;
}

footer {
    margin-top: 2rem;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}

footer a {
    color: var(--accent-blue);
    text-decoration: none;
}

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