/* Se cambia la fuente a 'Inter' y se importa Font Awesome para los iconos */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');
@import url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.2/css/all.min.css');

/* --- Variables de Diseño --- */
:root {
    --primary-color: #007bff;
    --primary-hover: #0056b3;
    --background-color: #f4f7fc;
    --card-background: #ffffff;
    --text-color: #495057;
    --heading-color: #343a40;
    --border-color: #dee2e6;
    --shadow-color: rgba(0, 0, 0, 0.08);

    --error-bg: #f8d7da;
    --error-text: #721c24;
    --success-bg: #d4edda;
    --success-text: #155724;
}

/* --- MODO OSCURO AUTOMÁTICO --- */
@media (prefers-color-scheme: dark) {
    :root {
        --primary-color: #3498db;
        --primary-hover: #2980b9;
        --background-color: #121212;
        --card-background: #1e1e1e;
        --text-color: #adb5bd;
        --heading-color: #e9ecef;
        --border-color: #495057;
        --shadow-color: rgba(0, 0, 0, 0.4);

        --error-bg: #4a2124;
        --error-text: #f5c6cb;
        --success-bg: #1c3b26;
        --success-text: #c3e6cb;
    }

    thead th {
        background-color: #343a40 !important;
    }

    tbody tr:nth-of-type(even) {
        background-color: #2c2c2c !important;
    }
}


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

body {
    /* Se actualiza la fuente principal */
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, var(--background-color), #e9ecf2);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    transition: background-color 0.3s;
}

@media (prefers-color-scheme: dark) {
    body {
        background: var(--background-color);
    }
}

.container {
    background-color: var(--card-background);
    padding: 30px 40px;
    border-radius: 16px;
    box-shadow: 0 15px 35px var(--shadow-color);
    width: 100%;
    transition: background-color 0.3s;
}

h1, h2, h3 {
    color: var(--heading-color);
    font-weight: 600;
    margin-bottom: 10px;
}

h1 { font-size: 28px; text-align: center; }
h2 { font-size: 22px; border-bottom: 2px solid var(--primary-color); padding-bottom: 10px; margin-top: 30px; }

p {
    color: #6c757d;
    line-height: 1.6;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

/* --- Formularios --- */
form {
    display: flex;
    flex-direction: column;
    margin-top: 20px;
}

label {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--heading-color);
}

input[type="email"],
input[type="password"],
input[type="text"],
input[type="time"],
select {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 20px;
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    background-color: var(--background-color);
    color: var(--text-color);
    transition: border-color 0.3s, box-shadow 0.3s;
}

input:focus,
select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary-color) 20%, transparent);
}

button, .btn {
    background-color: var(--primary-color);
    color: white;
    padding: 12px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s, box-shadow 0.2s;
    text-align: center;
}

button:hover, .btn:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

/* --- Mensajes --- */
.mensaje {
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
}

.mensaje.error {
    background-color: var(--error-bg);
    color: var(--error-text);
}

.mensaje.exito {
    background-color: var(--success-bg);
    color: var(--success-text);
}

/* --- Tablas --- */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 25px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

th, td {
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    text-align: left;
}

thead th {
    background-color: #f8f9fa;
    font-weight: 600;
}

tbody tr {
    transition: background-color 0.2s;
}

tbody tr:nth-of-type(even) {
    background-color: #f8f9fa;
}

tbody tr:hover {
    background-color: color-mix(in srgb, var(--primary-color) 10%, transparent);
}

/* --- Navegación del Panel --- */
.panel-nav {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.panel-nav a {
    background-color: var(--background-color);
    border-radius: 12px;
    padding: 25px 20px;
    text-align: center;
    font-size: 16px;
    font-weight: 500;
    color: var(--heading-color);
    text-decoration: none;
    transition: transform 0.3s, box-shadow 0.3s, background-color 0.3s;
    border: 1px solid var(--border-color);
}

/* NUEVA REGLA: Fuerza la eliminación de cualquier emoji o icono antiguo */
.panel-nav a::before {
    content: "" !important;
    display: none !important;
}

.panel-nav a:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    background-color: var(--card-background);
}

/* Estilo para los nuevos iconos de Font Awesome */
.panel-nav a i {
    display: block;
    font-size: 2.5em;
    margin-bottom: 10px;
    color: var(--primary-color);
}