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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #0b0f14 0%, #0b1220 100%);
    min-height: 100vh;
    padding: 24px;
    color: #e6edf3;
    font-size: 18px; /* larger base text for projector */
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

.header {
    text-align: center;
    color: #ffffff;
    margin-bottom: 32px;
}

.header h1 {
    font-size: 3em; /* larger title */
    margin-bottom: 12px;
    letter-spacing: 0.5px;
}

.warning {
    background: #b00020;
    color: #ffffff;
    padding: 16px 18px;
    border-radius: 10px;
    margin-bottom: 22px;
    text-align: center;
    font-weight: 800;
    border: 2px solid #ff4d6d;
}

.warning::before {
    content: "";
}

.grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 22px;
}

.card {
    background: #121418; /* darker for contrast */
    border-radius: 12px;
    padding: 26px;
    margin-bottom: 22px;
    border: 1px solid #2a2f3a; /* clear separation */
}

.card h2 {
    color: #58a6ff; /* brighter header */
    margin-bottom: 18px;
    font-size: 1.4em;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.form-group {
    margin-bottom: 16px;
}

label {
    display: block;
    margin-bottom: 8px;
    color: #e6edf3;
    font-weight: 700;
}

input {
    width: 100%;
    padding: 14px;
    border: 2px solid #2a2f3a;
    border-radius: 8px;
    font-size: 16px;
    background: #0f1620; /* darker input */
    color: #e6edf3;
    transition: border-color 0.2s, box-shadow 0.2s;
}

input:focus {
    outline: none;
    border-color: #4da3ff; /* bright focus */
    box-shadow: 0 0 0 3px rgba(77, 163, 255, 0.25);
}

button {
    width: 100%;
    padding: 14px 16px;
    background: #1f6bff; /* saturated button */
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 18px;
    font-weight: 800;
    cursor: pointer;
    transition: background 0.2s;
}

button:hover {
    background: #1856c7;
}

.code-block {
    background: #0a0d14; /* deeper black-blue */
    color: #f2f4f8;
    padding: 22px;
    border-radius: 10px;
    font-family: 'Consolas', 'Courier New', monospace;
    font-size: 16px; /* bigger for projection */
    overflow-x: auto;
    line-height: 1.9;
    min-height: 220px;
    border: 1px solid #2a2f3a;
}

.code-block .sql-keyword {
    color: #58a6ff; /* bright blue */
    font-weight: 900;
}

.code-block .sql-table {
    color: #2ee6c5; /* vivid teal */
    font-weight: 700;
}

.code-block .sql-column {
    color: #a3daff; /* light cyan-blue */
    font-weight: 700;
}

.code-block .sql-string {
    color: #ffb86c; /* bright orange */
    font-weight: 700;
}

.code-block .sql-operator {
    color: #ffffff;
    font-weight: 700;
}

.logs-block {
    background: #0a0d14;
    color: #e6edf3;
    padding: 22px;
    border-radius: 10px;
    font-family: 'Consolas', 'Courier New', monospace;
    font-size: 16px;
    line-height: 1.9;
    min-height: 220px;
    overflow-x: auto;
    border: 1px solid #2a2f3a;
}

.logs-block .log-info {
    color: #00c2ff; /* bright cyan */
    display: block;
    margin-bottom: 8px;
    font-weight: 800;
}

.logs-block .log-success {
    color: #8aff80; /* vivid green */
    display: block;
    margin-bottom: 8px;
    font-weight: 800;
}

.logs-block .log-error {
    color: #ff4d6d; /* saturated red-pink */
    border: 2px solid #ff4d6d;
    padding: 12px;
    border-radius: 6px;
    margin: 12px 0;
    display: block;
    font-weight: 900;
    background: rgba(255, 77, 109, 0.08);
}

.logs-block .log-query {
    color: #ffd000; /* bright yellow */
    margin-top: 6px;
    display: block;
    margin-bottom: 8px;
    font-weight: 800;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 16px;
    background: #0f1218;
    border: 1px solid #2a2f3a;
}

th, td {
    padding: 14px;
    text-align: left;
    border-bottom: 1px solid #2a2f3a;
    color: #e6edf3;
    font-size: 16px;
}

th {
    background: #1f6bff; /* strong header color */
    color: white;
    font-weight: 900;
}

tr:hover {
    background: #141a24;
}

.result {
    margin-top: 16px;
    padding: 16px;
    border-radius: 8px;
    font-weight: 800;
    border: 1px solid transparent;
}

.result.success {
    background: #0ea66c; /* saturated green */
    color: #ffffff;
    border-color: #11c787;
}

.result.error {
    background: #b00020; /* deep red */
    color: #ffffff;
    border-color: #ff4d6d;
}

.hint {
    background: #2a1e00;
    border-left: 5px solid #ffb300;
    padding: 16px;
    margin-top: 16px;
    border-radius: 6px;
    color: #ffd54f;
    font-weight: 700;
}

.hint code {
    background: #0f1620;
    padding: 3px 8px;
    border-radius: 4px;
    color: #ffb86c;
    border: 1px solid #2a2f3a;
}

@media (max-width: 968px) {
    .grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    table {
        font-size: 12px;
    }
    
    th, td {
        padding: 8px;
        font-size: 12px;
    }
    
    .code-block,
    .logs-block {
        font-size: 12px;
    }
}