/* ===================================
   SISTEMA DE DISEÑO RESPONSIVO TUCHAMBA
   Diseño moderno para toda la aplicación
   =================================== */

/* Reset y Variables CSS */
:root {
    /* Colores principales basados en la imagen de referencia */
    --primary-blue: #4A90E2;
    --primary-blue-dark: #357ABD;
    --primary-blue-light: #6BA3E8;
    --secondary-blue: #5BA0F2;
    --accent-blue: #74B9FF;
    --light-blue: #A8D8FF;
    --very-light-blue: #E3F2FD;
    
    /* Gradientes principales */
    --primary-gradient: linear-gradient(135deg, #4A90E2 0%, #357ABD 100%);
    --secondary-gradient: linear-gradient(135deg, #5BA0F2 0%, #4A90E2 100%);
    --success-gradient: linear-gradient(135deg, #28A745 0%, #20C997 100%);
    --warning-gradient: linear-gradient(135deg, #FFC107 0%, #FFB74D 100%);
    --danger-gradient: linear-gradient(135deg, #DC3545 0%, #FF6B7A 100%);
    --info-gradient: linear-gradient(135deg, #4A90E2 0%, #74B9FF 100%);
    
    /* Colores de texto */
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-light: #ffffff;
    --text-muted: #95a5a6;
    
    /* Fondos */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-dark: #212529;
    --bg-white: rgba(255, 255, 255, 0.95);
    --bg-blur: rgba(255, 255, 255, 0.8);
    
    /* Sombras con tonos azules */
    --shadow-sm: 0 2px 4px rgba(74, 144, 226, 0.1);
    --shadow-card: 0 4px 12px rgba(74, 144, 226, 0.15);
    --shadow-hover: 0 8px 24px rgba(74, 144, 226, 0.2);
    --shadow-lg: 0 12px 40px rgba(74, 144, 226, 0.25);
    
    /* Bordes */
    --border-radius: 20px;
    --border-radius-sm: 12px;
    --border-radius-lg: 25px;
    
    /* Transiciones */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.2s ease;
    --transition-slow: all 0.5s ease;
    
    /* Espaciado */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Tipografía */
    --font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal: 1040;
    --z-popover: 1050;
    --z-tooltip: 1060;
}

/* Reset universal */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Base typography */
html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--primary-gradient);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Títulos responsivos */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: clamp(1.5rem, 5vw, 2.5rem); }
h2 { font-size: clamp(1.3rem, 4vw, 2rem); }
h3 { font-size: clamp(1.1rem, 3vw, 1.5rem); }
h4 { font-size: clamp(1rem, 2.5vw, 1.25rem); }
h5 { font-size: clamp(0.9rem, 2vw, 1.125rem); }
h6 { font-size: clamp(0.8rem, 1.5vw, 1rem); }

/* Links */
a {
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--primary-blue);
}

/* Botones base */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius-lg);
    font-weight: 600;
    font-size: var(--font-size-sm);
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    min-height: 44px; /* Accesibilidad táctil */
}

.btn-primary {
    background: var(--primary-gradient);
    color: var(--text-light);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
    color: var(--text-light);
}

.btn-secondary {
    background: var(--secondary-gradient);
    color: var(--text-light);
    box-shadow: 0 4px 15px rgba(240, 147, 251, 0.3);
}

.btn-success {
    background: var(--success-gradient);
    color: var(--text-light);
    box-shadow: 0 4px 15px rgba(79, 172, 254, 0.3);
}

.btn-warning {
    background: var(--warning-gradient);
    color: var(--text-primary);
    box-shadow: 0 4px 15px rgba(255, 193, 7, 0.3);
}

.btn-danger {
    background: var(--danger-gradient);
    color: var(--text-light);
    box-shadow: 0 4px 15px rgba(255, 154, 158, 0.3);
}

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

.btn-outline:hover {
    background: var(--primary-blue);
    color: var(--text-light);
}

/* Formularios responsivos */
.form-group {
    margin-bottom: var(--spacing-md);
}

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

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid #e9ecef;
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-md);
    transition: var(--transition);
    background: var(--bg-primary);
    min-height: 44px;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-control.is-invalid {
    border-color: #dc3545;
}

.form-control.is-valid {
    border-color: #28a745;
}

/* Cards responsivas */
.card {
    background: var(--bg-white);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-card);
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.2);
    margin-bottom: var(--spacing-lg);
}

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

.card-header {
    position: relative;
    overflow: hidden;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    margin: calc(-1 * var(--spacing-lg)) calc(-1 * var(--spacing-lg)) var(--spacing-lg) calc(-1 * var(--spacing-lg));
    padding: var(--spacing-lg);
    background: var(--primary-gradient);
    color: var(--text-light);
}

.card-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.card-body {
    padding: 0;
}

.card-footer {
    margin: var(--spacing-lg) calc(-1 * var(--spacing-lg)) calc(-1 * var(--spacing-lg)) calc(-1 * var(--spacing-lg));
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border-radius: 0 0 var(--border-radius) var(--border-radius);
}

/* Grid responsivo */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-1 { grid-template-columns: 1fr; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.grid-auto-fit {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-auto-fill {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
}

/* Container principal */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    width: 100%;
}

.container-fluid {
    width: 100%;
    padding: 0 var(--spacing-md);
}

/* Flexbox utilities */
.d-flex { display: flex; }
.d-inline-flex { display: inline-flex; }
.flex-column { flex-direction: column; }
.flex-row { flex-direction: row; }
.flex-wrap { flex-wrap: wrap; }
.flex-nowrap { flex-wrap: nowrap; }
.justify-content-start { justify-content: flex-start; }
.justify-content-center { justify-content: center; }
.justify-content-end { justify-content: flex-end; }
.justify-content-between { justify-content: space-between; }
.justify-content-around { justify-content: space-around; }
.align-items-start { align-items: flex-start; }
.align-items-center { align-items: center; }
.align-items-end { align-items: flex-end; }
.align-items-stretch { align-items: stretch; }

/* Text utilities */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-light { color: var(--text-light); }
.text-muted { color: var(--text-muted); }
.text-gradient {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Spacing utilities */
.m-0 { margin: 0; }
.m-1 { margin: var(--spacing-xs); }
.m-2 { margin: var(--spacing-sm); }
.m-3 { margin: var(--spacing-md); }
.m-4 { margin: var(--spacing-lg); }
.m-5 { margin: var(--spacing-xl); }

.p-0 { padding: 0; }
.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.p-4 { padding: var(--spacing-lg); }
.p-5 { padding: var(--spacing-xl); }

/* Display utilities */
.d-none { display: none; }
.d-block { display: block; }
.d-inline { display: inline; }
.d-inline-block { display: inline-block; }

/* Position utilities */
.position-relative { position: relative; }
.position-absolute { position: absolute; }
.position-fixed { position: fixed; }
.position-sticky { position: sticky; }

/* Alertas responsivas */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    animation: slideDown 0.3s ease-out;
    border: 2px solid transparent;
}

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

.alert-success {
    background: linear-gradient(135deg, #d4edda, #c3e6cb);
    color: #155724;
    border-color: #b8dacc;
}

.alert-error,
.alert-danger {
    background: linear-gradient(135deg, #f8d7da, #f5c6cb);
    color: #721c24;
    border-color: #f1b0b7;
}

.alert-warning {
    background: var(--warning-gradient);
    color: #856404;
    border-color: #ffd93d;
}

.alert-info {
    background: var(--info-gradient);
    color: #0c5460;
    border-color: #bee5eb;
}

/* Tablas responsivas */
.table-responsive {
    overflow-x: auto;
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-card);
    margin-bottom: var(--spacing-lg);
}

.table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-primary);
    min-width: 800px;
}

.table th,
.table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid #e9ecef;
    font-size: var(--font-size-sm);
}

.table th {
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    font-size: var(--font-size-xs);
    letter-spacing: 1px;
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
}

.table tbody tr:hover {
    background: rgba(102, 126, 234, 0.05);
}

.table-striped tbody tr:nth-child(odd) {
    background: rgba(0, 0, 0, 0.02);
}

/* Badges y states */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: var(--border-radius-lg);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-primary {
    background: #e3f2fd;
    color: #1976d2;
}

.badge-success {
    background: #e8f5e8;
    color: #388e3c;
}

.badge-warning {
    background: #fff3e0;
    color: #ef6c00;
}

.badge-danger {
    background: #ffebee;
    color: #d32f2f;
}

.badge-info {
    background: #e1f5fe;
    color: #0277bd;
}

.badge-secondary {
    background: #f5f5f5;
    color: #666;
}

/* Estados */
.status-active {
    color: #28a745;
    font-weight: 600;
}

.status-inactive {
    color: #dc3545;
    font-weight: 600;
}

.status-pending {
    color: #ffc107;
    font-weight: 600;
}

/* Botones flotantes */
.floating-btn {
    position: fixed;
    background: var(--primary-gradient);
    color: var(--text-light);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    z-index: var(--z-fixed);
}

.floating-btn:hover {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.5);
    color: var(--text-light);
}

.floating-actions {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    z-index: var(--z-fixed);
}

/* Navegación por tabs */
.nav-tabs {
    display: flex;
    background: rgba(255, 255, 255, 0.5);
    border-radius: var(--border-radius);
    padding: 0.5rem;
    margin-bottom: var(--spacing-lg);
    backdrop-filter: blur(10px);
    flex-wrap: wrap;
    gap: 0.5rem;
}

.nav-tab {
    flex: 1;
    min-width: 150px;
    padding: var(--spacing-md);
    background: none;
    border: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.nav-tab.active {
    background: var(--bg-primary);
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
    transform: translateY(-2px);
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { 
        opacity: 0; 
        transform: translateY(10px); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

/* Modales */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal.show {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    max-width: 90vw;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    transform: scale(0.9);
    transition: var(--transition);
}

.modal.show .modal-content {
    transform: scale(1);
}

/* Loading states */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(102, 126, 234, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-blue);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: skeleton 1.5s infinite;
    border-radius: var(--border-radius-sm);
}

@keyframes skeleton {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Responsive Design */
@media (max-width: 1200px) {
    .container {
        max-width: 100%;
        padding: 0 var(--spacing-lg);
    }
    
    .grid-4 {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 992px) {
    .grid-3,
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .floating-btn {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .floating-actions {
        bottom: var(--spacing-md);
        right: var(--spacing-md);
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .card {
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-md);
    }
    
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .nav-tabs {
        flex-direction: column;
    }
    
    .nav-tab {
        min-width: unset;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .table {
        font-size: var(--font-size-xs);
    }
    
    .table th,
    .table td {
        padding: var(--spacing-sm);
    }
    
    .modal-content {
        margin: var(--spacing-md);
        max-width: calc(100vw - 2rem);
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-md: 0.75rem;
        --spacing-lg: 1rem;
    }
    
    .floating-btn {
        width: 45px;
        height: 45px;
        font-size: 1rem;
    }
    
    .card {
        margin: 0 var(--spacing-sm);
    }
    
    .alert {
        margin: 0 var(--spacing-sm) var(--spacing-md) var(--spacing-sm);
        padding: var(--spacing-sm) var(--spacing-md);
    }
}

/* Modo oscuro */
@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: #ffffff;
        --text-secondary: #b0b0b0;
        --bg-primary: #1a1a1a;
        --bg-secondary: #2d2d2d;
        --bg-white: rgba(26, 32, 46, 0.95);
        --bg-blur: rgba(26, 32, 46, 0.8);
    }
    
    .form-control {
        background: var(--bg-secondary);
        border-color: #4a4a4a;
        color: var(--text-primary);
    }
    
    .table {
        background: var(--bg-secondary);
    }
    
    .table th {
        background: var(--bg-primary);
    }
}

/* Reducir movimiento para accesibilidad */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Imprimir */
@media print {
    .floating-btn,
    .floating-actions,
    .btn,
    .nav-tabs {
        display: none !important;
    }
    
    .card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ddd;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
    
    .table {
        font-size: 12px;
    }
}

/* Focus visible mejorado */
.focus-visible {
    outline: 3px solid var(--primary-blue);
    outline-offset: 2px;
}

/* Estados de carga */
.is-loading {
    pointer-events: none;
    opacity: 0.6;
}

.is-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid var(--primary-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Utilidades adicionales */
.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }
.w-100 { width: 100%; }
.h-100 { height: 100%; }
.mw-100 { max-width: 100%; }
.mh-100 { max-height: 100%; }

.text-truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}