:root {
    --primary-color: #2c3e50;
    --accent-color: #1abc9c;
    --accent-hover: #16a085;
    --bg-color: #f4f7f6;
    --card-bg: #ffffff;
    --text-color: #333333;
    --border-color: #dcdde1;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    padding: 20px;
}

.container {
    max-width: 900px;
    margin: 30px auto;
    background: var(--card-bg);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

h1, h2 {
    color: var(--primary-color);
    margin-bottom: 20px;
    text-align: center;
}

.db-status {
    text-align: center;
    padding: 10px;
    margin-bottom: 20px;
    border-radius: 5px;
    font-size: 0.9rem;
    font-weight: 600;
}

.db-status.success {
    background-color: #e8f8f5;
    color: #117a65;
    border: 1px solid #a3e4d7;
}

.db-status.error {
    background-color: #f5b7b1;
    color: #78281f;
    border: 1px solid #ec7063;
}

/* Estilos del Formulario */
form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 30px;
}

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

.form-group.full-width {
    grid-column: span 2;
}

label {
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--primary-color);
}

input[type="text"] {
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

input[type="text"]:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 5px rgba(26, 188, 156, 0.3);
}

button[type="submit"] {
    grid-column: span 2;
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 12px;
    font-size: 1rem;
    font-weight: bold;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

button[type="submit"]:hover {
    background-color: var(--accent-hover);
}

hr {
    border: 0;
    height: 1px;
    background-color: var(--border-color);
    margin: 30px 0;
}

/* Estilos de la Tabla */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
    background-color: white;
    border-radius: 6px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

th, td {
    padding: 12px 15px;
    text-align: left;
}

th {
    background-color: var(--primary-color);
    color: white;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
}

tr:nth-child(even) {
    background-color: #f9f9f9;
}

tr:hover {
    background-color: #f1f1f1;
}

td {
    border-bottom: 1px solid var(--border-color);
    font-size: 0.95rem;
}