/**
 * Estilos para el Sistema de Registro Nacional de Mascotas
 * Diseño limpio y responsivo
 */

/* ============================================
   Reset y estilos base
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}



:root {
    /* Colores principales */
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --secondary-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --text-color: #1f2937;
    --text-light: #6b7280;
    --bg-color: #f9fafb;
    --white: #ffffff;
    --border-color: #e5e7eb;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* ============================================
   Header
   ============================================ */
.main-header {
    background-color: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo a {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: 700;
}

.logo a:hover {
    color: var(--primary-dark);
}

/* Navegación */
.main-nav ul {
    list-style: none;
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.main-nav a {
    color: var(--text-color);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    transition: all 0.2s;
}

.main-nav a:hover {
    background-color: var(--bg-color);
    color: var(--primary-color);
}

.main-nav .btn-logout {
    background-color: var(--danger-color);
    color: var(--white);
}

.main-nav .btn-logout:hover {
    background-color: #dc2626;
}

.main-nav .btn-register {
    background-color: var(--primary-color);
    color: var(--white);
}

.main-nav .btn-register:hover {
    background-color: var(--primary-dark);
}

.user-greeting {
    color: var(--text-light);
    font-size: 0.875rem;
}

/* ============================================
   Main Content
   ============================================ */
.main-content {
    flex: 1;
    padding: 2rem 0;
}

/* ============================================
   Footer
   ============================================ */
.main-footer {
    background-color: var(--text-color);
    color: var(--white);
    padding: 2rem 0;
    margin-top: auto;
}

.footer-content {
    text-align: center;
}

.footer-content p {
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

/* ============================================
   Alertas y mensajes
   ============================================ */
.alert {
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1.5rem;
    border-left: 4px solid;
}

.alert-error {
    background-color: #fef2f2;
    border-color: var(--danger-color);
    color: #991b1b;
}

.alert-success {
    background-color: #f0fdf4;
    border-color: var(--secondary-color);
    color: #166534;
}

.alert-info {
    background-color: #eff6ff;
    border-color: var(--primary-color);
    color: #1e40af;
}

.alert-warning {
    background-color: #fffbeb;
    border-color: var(--warning-color);
    color: #92400e;
}

/* ============================================
   Cards
   ============================================ */
.card {
    background-color: var(--white);
    border-radius: 0.5rem;
    box-shadow: var(--shadow);
    padding: 2rem;
    margin-bottom: 2rem;
}

.card-header {
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 1rem;
    margin-bottom: 1.5rem;
}

.card-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
}

/* ============================================
   Formularios
   ============================================ */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-color);
}

.form-label.required::after {
    content: " *";
    color: var(--danger-color);
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    font-size: 1rem;
    transition: all 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-control:disabled {
    background-color: var(--bg-color);
    cursor: not-allowed;
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

select.form-control {
    cursor: pointer;
}

.form-text {
    font-size: 0.875rem;
    color: var(--text-light);
    margin-top: 0.25rem;
    display: block;
}

.form-error {
    color: var(--danger-color);
    font-size: 0.875rem;
    margin-top: 0.25rem;
    display: block;
}

/* Checkbox */
.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-check input[type="checkbox"] {
    width: 1.125rem;
    height: 1.125rem;
    cursor: pointer;
}

.form-check label {
    cursor: pointer;
    font-weight: normal;
}

/* Grid de formularios */
.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

/* ============================================
   Botones
   ============================================ */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: 0.375rem;
    cursor: pointer;
    transition: all 0.2s;
    line-height: 1.5;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
}

.btn-secondary {
    background-color: var(--text-light);
    color: var(--white);
}

.btn-secondary:hover {
    background-color: var(--text-color);
}

.btn-success {
    background-color: var(--secondary-color);
    color: var(--white);
}

.btn-success:hover {
    background-color: #059669;
}

.btn-danger {
    background-color: var(--danger-color);
    color: var(--white);
}

.btn-danger:hover {
    background-color: #dc2626;
}

.btn-warning {
    background-color: var(--warning-color);
    color: var(--white);
}

.btn-warning:hover {
    background-color: #d97706;
}

.btn-block {
    width: 100%;
    display: block;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

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

.btn-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* ============================================
   Tablas
   ============================================ */
.table-container {
    overflow-x: auto;
    margin: 1.5rem 0;
}

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

table thead {
    background-color: var(--bg-color);
}

table th,
table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

table th {
    font-weight: 600;
    color: var(--text-color);
}

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

table .actions {
    white-space: nowrap;
}

table .actions a,
table .actions button {
    margin-right: 0.5rem;
}

/* ============================================
   Badges y estados
   ============================================ */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 9999px;
    text-transform: capitalize;
}

.badge-success {
    background-color: #d1fae5;
    color: #065f46;
}

.badge-danger {
    background-color: #fee2e2;
    color: #991b1b;
}

.badge-warning {
    background-color: #fef3c7;
    color: #92400e;
}

.badge-info {
    background-color: #dbeafe;
    color: #1e40af;
}

/* ============================================
   Sección hero (página de inicio)
   ============================================ */
.hero {
    text-align: center;
    padding: 3rem 0;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

/* ============================================
   Search box
   ============================================ */
.search-box {
    max-width: 600px;
    margin: 2rem auto;
}

/* ============================================
   Info display (resultados de búsqueda)
   ============================================ */
.info-display {
    background-color: var(--white);
    border-radius: 0.5rem;
    box-shadow: var(--shadow-lg);
    padding: 2rem;
    margin: 2rem 0;
}

.info-section {
    margin-bottom: 2rem;
}

.info-section:last-child {
    margin-bottom: 0;
}

.info-section-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.5rem;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.info-item {
    padding: 0.5rem 0;
}

.info-label {
    font-weight: 600;
    color: var(--text-color);
    display: block;
    margin-bottom: 0.25rem;
}

.info-value {
    color: var(--text-light);
}

/* ============================================
   Empty state
   ============================================ */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.empty-state-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.empty-state-text {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

/* ============================================
   Declaración de firma
   ============================================ */
.declaration-box {
    background-color: #fffbeb;
    border: 2px solid var(--warning-color);
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin: 1.5rem 0;
}

.declaration-text {
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1rem;
    color: var(--text-color);
}

/* ============================================
   Responsivo
   ============================================ */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }

    .main-nav ul {
        flex-direction: column;
        gap: 0.5rem;
        width: 100%;
    }

    .main-nav li {
        width: 100%;
    }

    .main-nav a {
        display: block;
        text-align: center;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .info-grid {
        grid-template-columns: 1fr;
    }

    table {
        font-size: 0.875rem;
    }

    table th,
    table td {
        padding: 0.5rem;
    }
}

/* ============================================
   Utilidades
   ============================================ */
.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.text-muted {
    color: var(--text-light);
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.p-0 { padding: 0; }
.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }

.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }