/**
 * ESTILOS GLOBALES - CRUD DE GATOS
 * Diseño responsive y moderno con buenas prácticas CSS
 */

/* ==================== RESET Y VARIABLES ====================*/

:root {
    --color-primary: #667eea;
    --color-primary-dark: #5568d3;
    --color-success: #2e7d32;
    --color-error: #c62828;
    --color-warning: #f57c00;
    --color-bg-light: #f5f5f5;
    --color-border: #ddd;
    --color-text-primary: #333;
    --color-text-secondary: #666;
    --color-white: #ffffff;
    
    --spacing-xs: 5px;
    --spacing-sm: 10px;
    --spacing-md: 15px;
    --spacing-lg: 20px;
    --spacing-xl: 30px;
    --spacing-xxl: 40px;
    
    --border-radius: 5px;
    --border-radius-lg: 10px;
    --box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    --box-shadow-sm: 0 5px 15px rgba(0, 0, 0, 0.2);
    
    --font-size-sm: 12px;
    --font-size-base: 14px;
    --font-size-md: 16px;
    --font-size-lg: 20px;
    --font-size-xl: 24px;
}

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

html,
body {
    width: 100%;
    height: 100%;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--color-primary) 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-lg);
    color: var(--color-text-primary);
}

/* ==================== CONTAINER ====================*/

.container {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
    padding: var(--spacing-xxl);
    max-width: 600px;
    width: 100%;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==================== TIPOGRAFÍA ====================*/

h1 {
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
    text-align: center;
    font-size: var(--font-size-xl);
    font-weight: 600;
}

h2 {
    color: var(--color-text-primary);
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

label {
    display: block;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
    font-weight: 600;
    font-size: var(--font-size-md);
}

/* ==================== STATUS INFO ====================*/

.status-info {
    text-align: center;
    font-size: var(--font-size-sm);
    color: #1976d2;
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-sm);
    background: #e3f2fd;
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
}

.status-info.blocked {
    background: #ffebee;
    color: var(--color-error);
    font-weight: bold;
    padding: var(--spacing-md);
    border-left: 4px solid var(--color-error);
}

.status-info.loading {
    background: #e3f2fd;
    color: #1976d2;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

/* ==================== FORMULARIO ====================*/

.form-group {
    margin-bottom: var(--spacing-lg);
}

input[type="text"],
input[type="hidden"] {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    font-size: var(--font-size-md);
    transition: border-color 0.3s, box-shadow 0.3s;
    font-family: inherit;
}

input[type="text"]:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 5px rgba(102, 126, 234, 0.3);
}

input[type="text"]:disabled {
    background: var(--color-bg-light);
    color: #999;
    cursor: not-allowed;
    opacity: 0.6;
}

input[type="hidden"] {
    display: none;
}

/* ==================== MENSAJES ====================*/

.error-message,
.success-message {
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
    display: none;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    animation: fadeIn 0.3s ease-out;
}

.error-message.show {
    display: block;
    color: var(--color-error);
    background: #ffebee;
    border-left: 3px solid var(--color-error);
}

.success-message.show {
    display: block;
    color: var(--color-success);
    background: #e8f5e9;
    border-left: 3px solid var(--color-success);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==================== CONTADOR ====================*/

.counter {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: var(--spacing-xs);
    transition: all 0.3s;
}

.counter.warning {
    color: var(--color-warning);
    font-weight: bold;
}

.counter.danger {
    color: var(--color-error);
    font-weight: bold;
}

/* ==================== BOTONES ====================*/

.button-group {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

button {
    padding: var(--spacing-md);
    border: none;
    border-radius: var(--border-radius);
    font-size: var(--font-size-md);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    font-family: inherit;
}

button:active {
    transform: scale(0.98);
}

button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Botón Primario */
.btn-primary {
    flex: 1;
    background: var(--color-primary);
    color: var(--color-white);
    min-width: 150px;
}

.btn-primary:hover:not(:disabled) {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--box-shadow-sm);
}

.btn-primary:disabled {
    background: #ccc;
}

/* Botón Secundario */
.btn-secondary {
    flex: 1;
    background: var(--color-bg-light);
    color: var(--color-text-primary);
    border: 2px solid var(--color-border);
    min-width: 150px;
}

.btn-secondary:hover:not(:disabled) {
    background: #e8e8e8;
    border-color: var(--color-text-secondary);
}

/* Botón Editar */
.btn-edit {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-success);
    color: var(--color-white);
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-edit:hover:not(:disabled) {
    background: #1b5e20;
    transform: scale(1.05);
}

.btn-edit:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Botón Eliminar */
.btn-delete {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: #f44336;
    color: var(--color-white);
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-delete:hover:not(:disabled) {
    background: #da190b;
    transform: scale(1.05);
}

.btn-delete:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ==================== TABLA ====================*/

.table-container {
    margin-top: var(--spacing-xl);
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: var(--spacing-lg);
    background: var(--color-white);
}

thead th {
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
    font-size: var(--font-size-md);
}

tbody td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    font-size: var(--font-size-md);
}

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

tbody tr:hover {
    background: var(--color-bg-light);
}

tbody tr:last-child td {
    border-bottom: none;
}

/* ==================== ACCIONES DE TABLA ====================*/

.action-buttons {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

/* ==================== MENSAJES VACÍOS ====================*/

.empty-message {
    text-align: center;
    color: var(--color-text-secondary);
    padding: var(--spacing-lg);
    font-style: italic;
    font-size: var(--font-size-md);
}

/* ==================== SPINNER DE CARGA ====================*/

.loading-spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-right: var(--spacing-sm);
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

/* ==================== RESPONSIVE ====================*/

@media (max-width: 768px) {
    .container {
        padding: var(--spacing-lg);
        max-width: 100%;
    }

    h1 {
        font-size: var(--font-size-lg);
    }

    h2 {
        font-size: var(--font-size-md);
    }

    .button-group {
        flex-direction: column;
    }

    .btn-primary,
    .btn-secondary {
        min-width: 100%;
        flex: 1;
    }

    .action-buttons {
        flex-direction: column;
    }

    table {
        font-size: var(--font-size-sm);
    }

    thead th,
    tbody td {
        padding: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    body {
        padding: var(--spacing-sm);
    }

    .container {
        padding: var(--spacing-lg);
        border-radius: var(--border-radius);
    }

    h1 {
        font-size: var(--font-size-md);
        margin-bottom: var(--spacing-xs);
    }

    .status-info {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs);
    }

    input[type="text"] {
        font-size: 16px; /* Evita zoom en iOS */
    }

    button {
        font-size: var(--font-size-sm);
        padding: var(--spacing-sm);
    }
}

/* ==================== ACCESIBILIDAD ====================*/

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-text-primary: #e0e0e0;
        --color-text-secondary: #a0a0a0;
        --color-bg-light: #333333;
        --color-border: #555555;
        --color-white: #1e1e1e;
    }

    .container {
        background: #1e1e1e;
        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    }

    table {
        background: #2a2a2a;
    }
}

/* ==================== PRINT ====================*/

@media print {
    body {
        background: none;
    }

    .container {
        box-shadow: none;
        border: 1px solid #ccc;
    }

    .button-group,
    .btn-primary,
    .btn-secondary {
        display: none;
    }
}

/* ==================== CLASES DE UTILIDAD ====================*/

.hidden {
    display: none !important;
}