/**
 * Sistema de Administración Financiera Personal
 * Estilos CSS Profesionales
 * Paleta de colores estilo Fintech
 */

/* ============================================
   VARIABLES CSS Y RESET
   ============================================ */
:root {
    /* Colores Principales - TEMA CLARO */
    --primary: #3B82F6;        /* Azul vibrante claro */
    --secondary: #06B6D4;      /* Cyan claro */
    --background: #F8FAFC;     /* Gris muy claro */
    --card-bg: #FFFFFF;        /* Blanco */
    --text-primary: #111827;   /* Gris casi negro para texto principal */
    --text-secondary: #4B5563; /* Gris oscuro mejorado para mejor contraste */
    --success: #10B981;        /* Verde esmeralda */
    --warning: #F59E0B;        /* Naranja */
    --error: #EF4444;          /* Rojo coral */
    --info: #0EA5E9;           /* Azul cielo */
    
    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    
    /* Bordes */
    --radius: 10px;
    --radius-sm: 6px;
    
    /* Espaciado */
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', 'Roboto', sans-serif;
    background: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* ============================================
   CONTENEDORES
   ============================================ */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

/* ============================================
   HEADER Y NAVEGACIÓN
   ============================================ */
.header {
    background: var(--card-bg);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: var(--text-primary);
}

.header-logo h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
}

.header-nav {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.header-nav a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.header-nav a:hover,
.header-nav a.active {
    color: var(--primary);
    background: rgba(30, 58, 138, 0.1);
}

.user-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
}

/* Botón menú móvil */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-primary);
    cursor: pointer;
    padding: 8px;
    z-index: 101;
}

.mobile-user-menu {
    display: none;
}

/* Responsive - Móviles */
@media (max-width: 992px) {
    .header-container {
        flex-wrap: wrap;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .desktop-user-menu {
        display: none;
    }
    
    .header-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--card-bg);
        box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
        flex-direction: column;
        align-items: stretch;
        padding: 80px 20px 20px;
        transition: right 0.3s ease;
        z-index: 100;
        overflow-y: auto;
    }
    
    .header-nav.active {
        right: 0;
    }
    
    .header-nav a {
        padding: 12px 16px;
        margin-bottom: 8px;
        border-radius: var(--radius-sm);
        display: flex;
        align-items: center;
        gap: 12px;
    }
    
    .mobile-user-menu {
        display: flex;
        flex-direction: column;
        gap: 12px;
        margin-top: 20px;
        padding-top: 20px;
        border-top: 1px solid #E5E7EB;
    }
    
    .mobile-user-name {
        color: var(--text-secondary);
        font-weight: 500;
        padding: 8px 0;
    }
    
    .mobile-menu-btn {
        width: 100%;
        justify-content: center;
    }
}

/* ============================================
   TARJETAS (CARDS)
   ============================================ */
.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.card h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    font-size: 18px;
    font-weight: 600;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.card-primary {
    border-left: 4px solid var(--primary);
}

.card-success {
    border-left: 4px solid var(--success);
}

.card-warning {
    border-left: 4px solid var(--warning);
}

.card-error {
    border-left: 4px solid var(--error);
}

.card-info {
    border-left: 4px solid var(--info);
}

.card-icon {
    font-size: 36px;
    margin-bottom: var(--spacing-sm);
}

.card-content h3 {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.card-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin: var(--spacing-xs) 0;
}

.card-content small {
    color: var(--text-secondary);
    font-size: 13px;
}

.card-footer {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid #E5E7EB;
    text-align: center;
}

/* ============================================
   PRESUPUESTO
   ============================================ */
.presupuesto-section {
    margin-bottom: var(--spacing-xl);
}

.presupuesto-section h2 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    font-size: 24px;
}

.presupuesto-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.presupuesto-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
}

.presupuesto-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.presupuesto-header h3 {
    font-size: 16px;
    color: var(--text-primary);
    margin: 0;
}

.presupuesto-total {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
}

.progress-bar {
    width: 100%;
    height: 12px;
    background: #E5E7EB;
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: var(--spacing-sm);
}

.progress-fill {
    height: 100%;
    background: var(--success);
    border-radius: 6px;
    transition: width 0.3s ease;
}

.presupuesto-info {
    display: flex;
    justify-content: space-between;
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: var(--spacing-xs);
}

.presupuesto-disponible {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 15px;
    margin-top: var(--spacing-sm);
}

.ahorro-total {
    color: var(--success);
}

/* ============================================
   DASHBOARD BOTTOM
   ============================================ */
.dashboard-bottom {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.chart-card {
    display: flex;
    flex-direction: column;
}

.chart-card canvas {
    max-height: 300px;
}

/* ============================================
   TABLAS
   ============================================ */
.table-container {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table thead {
    background: #F9FAFB;
}

.table th {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    font-weight: 600;
    color: #374151;
    font-size: 14px;
    border-bottom: 2px solid #E5E7EB;
}

.table td {
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid #E5E7EB;
    font-size: 14px;
    color: #111827;
}

.table tbody tr:hover {
    background: #F3F4F6;
}

.table tbody tr {
    background: #FFFFFF;
}

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

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

.categoria-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    background: #F3F4F6;
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: #111827;
    font-weight: 500;
}

.no-data {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-secondary);
}

/* ============================================
   RESUMEN FINANCIERO
   ============================================ */
.resumen-card {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
}

.resumen-card h3 {
    color: white;
}

.resumen-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.resumen-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.resumen-label {
    font-size: 14px;
    opacity: 0.9;
}

.resumen-value {
    font-size: 24px;
    font-weight: 700;
}

.resumen-value.success {
    color: #86EFAC;
}

.resumen-value.error {
    color: #FCA5A5;
}

/* ============================================
   FORMULARIOS
   ============================================ */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
    font-weight: 500;
    font-size: 14px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid #D1D5DB;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: inherit;
    transition: all 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

/* ============================================
   BOTONES
   ============================================ */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    text-align: center;
}

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

.btn-primary:hover {
    background: #1e40af;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    background: #2563eb;
}

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

.btn-success:hover {
    background: #15803d;
}

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

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

.btn-error:hover {
    background: #b91c1c;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

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

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.btn-block {
    width: 100%;
}

.btn-group {
    display: flex;
    gap: var(--spacing-sm);
}

/* ============================================
   ALERTAS
   ============================================ */
.alertas-container {
    margin-bottom: var(--spacing-lg);
}

.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.alert-success {
    background: #D1FAE5;
    color: #065F46;
    border-left: 4px solid var(--success);
}

.alert-error {
    background: #FEE2E2;
    color: #991B1B;
    border-left: 4px solid var(--error);
}

.alert-warning {
    background: #FEF3C7;
    color: #92400E;
    border-left: 4px solid var(--warning);
}

.alert-info {
    background: #DBEAFE;
    color: #1E40AF;
    border-left: 4px solid var(--info);
}

/* ============================================
   LOGIN
   ============================================ */
.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
}

.login-container {
    width: 100%;
    max-width: 450px;
    padding: var(--spacing-lg);
}

.login-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-xl);
}

.login-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.login-header h1 {
    color: var(--primary);
    font-size: 32px;
    margin-bottom: var(--spacing-sm);
}

.login-header p {
    color: var(--text-secondary);
    font-size: 14px;
}

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

.login-footer {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid #E5E7EB;
}

.demo-info {
    background: #F9FAFB;
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: #111827;
}

.demo-info strong {
    color: #111827;
    font-weight: 600;
}

.demo-info code {
    background: #E5E7EB;
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    color: #111827;
    font-weight: 500;
}

/* ============================================
   ACTIONS TABLE
   ============================================ */
.actions {
    display: flex;
    gap: var(--spacing-xs);
}

.btn-icon {
    padding: 6px 10px;
    font-size: 16px;
}

/* ============================================
   MODAL
   ============================================ */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid #E5E7EB;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-secondary);
}

.modal-body {
    padding: var(--spacing-lg);
}

.modal-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid #E5E7EB;
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
}

/* ============================================
   BADGES
   ============================================ */
.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.badge-fijo {
    background: #DBEAFE;
    color: #1E40AF;
}

.badge-variable {
    background: #FEF3C7;
    color: #92400E;
}

.badge-extraordinario {
    background: #FEE2E2;
    color: #991B1B;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--card-bg);
    padding: var(--spacing-lg);
    text-align: center;
    color: var(--text-secondary);
    font-size: 14px;
    margin-top: var(--spacing-xl);
    box-shadow: var(--shadow-md);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .container {
        padding: var(--spacing-md);
    }
    
    .cards-grid {
        grid-template-columns: 1fr;
    }
    
    .dashboard-bottom {
        grid-template-columns: 1fr;
    }
    
    .presupuesto-grid {
        grid-template-columns: 1fr;
    }
    
    .header-container {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .header-nav {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .resumen-grid {
        grid-template-columns: 1fr;
    }
    
    .card-value {
        font-size: 24px;
    }
}

/* ============================================
   UTILIDADES
   ============================================ */
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }

.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.p-4 { padding: var(--spacing-lg); }

.hidden { display: none; }
.flex { display: flex; }
.justify-between { justify-content: space-between; }
.items-center { align-items: center; }
.gap-2 { gap: var(--spacing-sm); }
.gap-3 { gap: var(--spacing-md); }

/* ============================================
   BADGES - Etiquetas de Estado
   ============================================ */
.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    text-align: center;
    white-space: nowrap;
}

.badge-info {
    background: #DBEAFE;
    color: #1E40AF;
}

.badge-success {
    background: #D1FAE5;
    color: #065F46;
}

.badge-warning {
    background: #FEF3C7;
    color: #92400E;
}

.badge-error {
    background: #FEE2E2;
    color: #991B1B;
}

.badge-primary {
    background: #E0E7FF;
    color: #3730A3;
}

/* ============================================
   RESPONSIVE DESIGN - MOBILE FIRST
   ============================================ */

/* Tablets y móviles medianos (landscape) */
@media (max-width: 1024px) {
    .container {
        padding: var(--spacing-md);
    }
    
    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
}

/* Móviles en portrait */
@media (max-width: 768px) {
    /* Contenedores */
    .container {
        padding: var(--spacing-sm);
    }
    
    /* Header */
    .header-container {
        flex-direction: column;
        gap: var(--spacing-sm);
        padding: var(--spacing-sm);
    }
    
    .header-nav {
        width: 100%;
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .nav-link {
        width: 100%;
        text-align: center;
        padding: var(--spacing-sm);
    }
    
    .user-info {
        width: 100%;
        justify-content: center;
        padding: var(--spacing-sm);
        border-top: 1px solid #E5E7EB;
    }
    
    /* Cards Grid - 1 columna en móvil */
    .cards-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    /* Cards */
    .card {
        padding: var(--spacing-md);
    }
    
    .card-icon {
        width: 40px;
        height: 40px;
        font-size: 20px;
    }
    
    .card h3 {
        font-size: 14px;
    }
    
    .card-value {
        font-size: 24px;
    }
    
    /* Formularios */
    .form-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    /* Botones */
    .btn-group {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    /* Tablas */
    .table-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    table {
        font-size: 12px;
        min-width: 600px;
    }
    
    th, td {
        padding: var(--spacing-xs);
    }
    
    /* Títulos */
    h1 {
        font-size: 24px;
    }
    
    h2 {
        font-size: 20px;
    }
    
    h3 {
        font-size: 16px;
    }
    
    /* Alertas */
    .alert {
        padding: var(--spacing-sm);
        font-size: 14px;
    }
    
    /* Punto de Equilibrio */
    .equilibrio-header {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-sm);
    }
    
    /* Apartados Grid */
    .apartados-grid {
        grid-template-columns: 1fr;
    }
    
    /* Modales */
    .modal-content {
        width: 95%;
        max-width: none;
        margin: 20px auto;
    }
}

/* Móviles pequeños */
@media (max-width: 480px) {
    /* Reducir espaciado */
    .container {
        padding: 10px;
    }
    
    /* Textos más pequeños */
    body {
        font-size: 14px;
    }
    
    .card {
        padding: 12px;
    }
    
    .card-value {
        font-size: 20px;
    }
    
    /* Botones */
    .btn {
        padding: 10px 16px;
        font-size: 14px;
    }
    
    /* Inputs */
    input, select, textarea {
        font-size: 16px; /* Evita zoom en iOS */
    }
    
    /* Tablas - scroll horizontal */
    table {
        font-size: 11px;
        min-width: 500px;
    }
    
    th, td {
        padding: 6px 4px;
    }
}

/* Landscape móvil */
@media (max-width: 768px) and (orientation: landscape) {
    .header-nav {
        flex-direction: row;
        flex-wrap: wrap;
    }
    
    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Dark mode support (opcional) */
@media (prefers-color-scheme: dark) {
    :root {
        --background: #111827;
        --card-bg: #1F2937;
        --text-primary: #F9FAFB;
        --text-secondary: #9CA3AF;
    }
}

/* Mejoras de accesibilidad */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Impresión */
@media print {
    .header, .btn, .nav-link, .btn-group {
        display: none;
    }
    
    .container {
        max-width: 100%;
        padding: 0;
    }
    
    .card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ddd;
    }
}