/**
 * Sistema de Control de Finanzas - Estilos CSS Profesionales
 * Diseño responsive y moderno para desktop y móvil
 * Ruta:  /css/style.css
 * @author [Daseb]
 * @version 2.0
 */

/* Variables de diseño profesional */
:root {
    --primary: #4361ee;
    --primary-dark: #3a56d4;
    --primary-light: #4895ef;
    --secondary: #7209b7;
    --success: #4cc9f0;
    --danger: #f72585;
    --warning: #f8961e;
    --info: #4895ef;
    --light: #f8f9fa;
    --dark: #212529;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #adb5bd;
    --gray-600: #6c757d;
    --gray-700: #495057;
    --gray-800: #343a40;
    --gray-900: #212529;
    
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1), 0 1px 3px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
    
    --radius: 8px;
    --radius-lg: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    color: var(--gray-800);
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
}

/* Layout principal */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* Header moderno */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    font-size: 1.75rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Navegación principal */
.main-nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.main-nav a {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.main-nav a.active {
    color: var(--primary);
    font-weight: 600;
}

.main-nav a.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
}

/* User menu */
.user-menu {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 1rem;
    background: var(--gray-100);
    border-radius: var(--radius);
    transition: var(--transition);
}

.user-info:hover {
    background: var(--gray-200);
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 1.1rem;
}

.user-details {
    display: flex;
    flex-direction: column;
}

.user-name {
    font-weight: 600;
    font-size: 0.9rem;
}

.user-role {
    font-size: 0.8rem;
    color: var(--gray-600);
}

.btn-logout {
    background: var(--danger);
    color: white;
    padding: 0.6rem 1.2rem;
    border-radius: var(--radius);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-logout:hover {
    background: #e11d74;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* Page header */
.page-header {
    margin-bottom: 2.5rem;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.page-header p {
    color: var(--gray-600);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Stats grid mejorado */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.stat-card {
    background: white;
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 1.5rem;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.stat-icon {
    font-size: 2.5rem;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-card.income .stat-icon {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
}

.stat-card.expense .stat-icon {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
}

.stat-card.balance .stat-icon {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: white;
}

.stat-info h3 {
    font-size: 0.9rem;
    color: var(--gray-600);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.stat-amount {
    font-size: 2rem;
    font-weight: 700;
}

.positive { 
    color: #10b981;
    text-shadow: 0 2px 4px rgba(16, 185, 129, 0.1);
}

.negative { 
    color: #ef4444;
    text-shadow: 0 2px 4px rgba(239, 68, 68, 0.1);
}

/* Quick actions mejorado */
.quick-actions {
    margin-bottom: 3rem;
}

.quick-actions h2 {
    margin-bottom: 1.5rem;
    color: var(--dark);
    font-size: 1.5rem;
    font-weight: 600;
}

.action-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.action-btn {
    background: white;
    padding: 2rem 1.5rem;
    border-radius: var(--radius-lg);
    text-decoration: none;
    color: var(--gray-800);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-200);
    position: relative;
    overflow: hidden;
}

.action-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: left 0.5s;
}

.action-btn:hover::before {
    left: 100%;
}

.action-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.action-btn span {
    font-size: rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.action-btn .btn-text {
    display: flex;
    flex-direction: column;
}

.action-btn .btn-main {
    font-weight: 600;
    font-size: 1.1rem;
}

.action-btn .btn-sub {
    font-size: 0.9rem;
    color: var(--gray-600);
}

/* Tables mejoradas */
.table-responsive {
    overflow-x: auto;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: 2rem;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.data-table th,
.data-table td {
    padding: 1.25rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.data-table th {
    background: var(--gray-50);
    font-weight: 600;
    color: var(--gray-800);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.data-table tr:last-child td {
    border-bottom: none;
}

.data-table tr:hover {
    background: var(--gray-50);
}

.data-table td {
    color: var(--gray-700);
}

/* Badges mejorados */
.badge {
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

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

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

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

/* Buttons mejorados */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius);
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
    font-size: 0.9rem;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transition: width 0.3s, height 0.3s, top 0.3s, left 0.3s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
    top: -150px;
    left: -150px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--gray-200);
    color: var(--gray-800);
}

.btn-secondary:hover {
    background: var(--gray-300);
    transform: translateY(-1px);
}

.btn-success {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
}

.btn-danger {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
}

.btn-warning {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
}

.btn-info {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: white;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
}

/* Forms mejorados */
.form-container {
    background: white;
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--gray-700);
    font-size: 0.9rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 1rem;
    transition: var(--transition);
    background: white;
}

.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(67, 97, 238, 0.1);
    transform: translateY(-1px);
}

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

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--gray-200);
}

/* Alerts mejorados */
.alert {
    padding: 1rem 1.5rem;
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
    border-left: 4px solid;
}

.alert-success {
    background: #f0fdf4;
    color: #166534;
    border-left-color: #22c55e;
}

.alert-error {
    background: #fef2f2;
    color: #991b1b;
    border-left-color: #ef4444;
}

.alert-warning {
    background: #fffbeb;
    color: #92400e;
    border-left-color: #f59e0b;
}

/* Responsive design */
@media (max-width: 1024px) {
    .container {
        padding: 1.5rem;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .main-nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
    }
    
    .user-menu {
        flex-direction: column;
        gap: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .action-buttons {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .data-table {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 1rem;
    }
    
    .form-container {
        padding: 1.5rem;
    }
    
    .stat-card {
        flex-direction: column;
        text-align: center;
        padding: 1.5rem;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
}

/* Animaciones */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* Scroll personalizado */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-400);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-500);
}
/* Estilos mejorados para el sidebar */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    width: 280px;
    background: #2c3e50;
    color: white;
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
}

.sidebar.active {
    transform: translateX(0);
}

.sidebar-content {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 1rem 0;
}

.sidebar-footer {
    background: rgba(0, 0, 0, 0.2);
    padding: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: auto;
}

.user-info {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #3498db;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin-right: 0.75rem;
}

.user-details {
    flex: 1;
}

.user-name {
    font-weight: 600;
    font-size: 0.9rem;
}

.user-role {
    font-size: 0.8rem;
    opacity: 0.8;
}

.btn-logout {
    display: flex;
    align-items: center;
    padding: 0.5rem;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    transition: background 0.3s;
    width: 100%;
}

.btn-logout:hover {
    background: rgba(255, 255, 255, 0.1);
}

.btn-logout i {
    margin-right: 0.5rem;
}

/* Ajustes para el contenido principal */
.main-content {
    margin-left: 0;
    transition: margin-left 0.3s ease;
}

@media (min-width: 768px) {
    .sidebar {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 280px;
    }
}

/* Footer mejorado */
.footer {
    background: #f8f9fa;
    padding: 1rem;
    text-align: center;
    border-top: 1px solid #dee2e6;
    margin-left: 0;
    transition: margin-left 0.3s ease;
}

@media (min-width: 768px) {
    .footer {
        margin-left: 280px;
    }
}