/**
 * CAPTACIONES - Sistema de Gestión de Captaciones
 * Diseño espectacular en tonos azul oscuro y acero
 * Mobile-first, minimalista y limpio
 */

/* ========================================
   VARIABLES Y RESET
======================================== */
:root {
    /* Colores principales - Azul oscuro y acero */
    --color-primary: #1a2332;
    --color-primary-dark: #0f1621;
    --color-primary-light: #2c3e50;
    --color-secondary: #546e7a;
    --color-accent: #607d8b;
    --color-steel: #90a4ae;
    --color-steel-light: #b0bec5;
    
    /* Colores de estado */
    --color-success: #26a69a;
    --color-warning: #ffa726;
    --color-error: #ef5350;
    --color-info: #42a5f5;
    
    /* Escala de grises */
    --color-white: #ffffff;
    --color-gray-50: #fafafa;
    --color-gray-100: #f5f5f5;
    --color-gray-200: #eeeeee;
    --color-gray-300: #e0e0e0;
    --color-gray-400: #bdbdbd;
    --color-gray-500: #9e9e9e;
    --color-gray-600: #757575;
    --color-gray-700: #616161;
    --color-gray-800: #424242;
    --color-gray-900: #212121;
    
    /* Sombras */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 12px 40px rgba(0, 0, 0, 0.25);
    
    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* Transiciones */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--color-gray-800);
    background: var(--color-gray-100);
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
}

/* ========================================
   PÁGINA DE LOGIN
======================================== */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 50%, var(--color-secondary) 100%);
    position: relative;
    overflow: hidden;
}

.login-page::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(30px, -30px) rotate(120deg); }
    66% { transform: translate(-20px, 20px) rotate(240deg); }
}

.login-container {
    width: 100%;
    max-width: 420px;
    position: relative;
    z-index: 1;
}

.login-card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    animation: slideUp 0.5s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    padding: var(--spacing-xl) var(--spacing-lg);
    text-align: center;
}

.logo-container {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
}

.logo-icon {
    width: 40px;
    height: 40px;
    stroke-width: 2.5;
}

.login-header h1 {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-xs);
}

.login-header .subtitle {
    font-size: 0.9rem;
    opacity: 0.9;
    font-weight: 300;
}

.login-form {
    padding: var(--spacing-xl) var(--spacing-lg);
}

/* ========================================
   FORMULARIOS
======================================== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 600;
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-xs);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group label svg {
    width: 18px;
    height: 18px;
    stroke-width: 2;
    color: var(--color-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: inherit;
    background: var(--color-white);
    transition: all var(--transition-base);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(26, 35, 50, 0.1);
}

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

/* ========================================
   BOTONES ESPECTACULARES
======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 1rem 2rem;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn svg {
    width: 20px;
    height: 20px;
    stroke-width: 2.5;
    transition: transform var(--transition-base);
}

.btn:hover svg {
    transform: scale(1.1);
}

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

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn span {
    position: relative;
    z-index: 1;
}

/* Botón primario */
.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    box-shadow: 0 4px 15px rgba(26, 35, 50, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 6px 20px rgba(26, 35, 50, 0.4);
    transform: translateY(-2px);
}

.btn-primary:active {
    transform: translateY(0);
}

/* Botón secundario */
.btn-secondary {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-steel) 100%);
    color: var(--color-white);
    box-shadow: 0 4px 15px rgba(96, 125, 139, 0.3);
}

.btn-secondary:hover {
    box-shadow: 0 6px 20px rgba(96, 125, 139, 0.4);
    transform: translateY(-2px);
}

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

.btn-outline:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
}

/* Tamaños de botones */
.btn-small {
    padding: 0.6rem 1.2rem;
    font-size: 0.85rem;
}

.btn-large {
    padding: 1.2rem 2.5rem;
    font-size: 1.1rem;
}

.btn-block {
    width: 100%;
}

/* Botón icono */
.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: var(--color-white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.btn-icon svg {
    width: 20px;
    height: 20px;
    stroke-width: 2;
}

.btn-icon:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
}

/* ========================================
   ALERTAS
======================================== */
.alert {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    font-weight: 500;
    animation: slideDown 0.3s ease;
}

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

.alert svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.alert-error {
    background: #ffebee;
    color: #c62828;
    border-left: 4px solid var(--color-error);
}

.alert-success {
    background: #e0f2f1;
    color: #00695c;
    border-left: 4px solid var(--color-success);
}

.alert-warning {
    background: #fff3e0;
    color: #ef6c00;
    border-left: 4px solid var(--color-warning);
}

.alert-info {
    background: #e3f2fd;
    color: #1565c0;
    border-left: 4px solid var(--color-info);
}

/* ========================================
   FOOTER DE LOGIN
======================================== */
.login-footer {
    padding: var(--spacing-lg);
    background: var(--color-gray-50);
    border-top: 1px solid var(--color-gray-200);
}

.help-text {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.85rem;
    color: var(--color-gray-600);
    text-align: center;
    justify-content: center;
}

.help-text svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    color: var(--color-info);
}

.help-text strong {
    color: var(--color-primary);
}

/* ========================================
   APLICACIÓN PRINCIPAL
======================================== */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--color-gray-100);
}

/* Header de la aplicación */
.app-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
}

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

.header-icon {
    width: 32px;
    height: 32px;
    stroke-width: 2;
}

.header-content h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 1px;
}

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

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    font-size: 0.9rem;
}

.user-info svg {
    width: 20px;
    height: 20px;
}

.header-spacer {
    width: 40px;
}

/* Main content */
.app-main {
    flex: 1;
    padding: var(--spacing-lg);
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
}

/* ========================================
   DASHBOARD
======================================== */
.dashboard-header {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.dashboard-title h2 {
    font-size: 2rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.dashboard-title .subtitle {
    color: var(--color-gray-600);
    font-size: 1rem;
}

/* Tarjetas de estadísticas */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon svg {
    width: 30px;
    height: 30px;
    stroke-width: 2;
    color: var(--color-white);
}

.stat-icon-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
}

.stat-icon-success {
    background: linear-gradient(135deg, #26a69a 0%, #00897b 100%);
}

.stat-icon-warning {
    background: linear-gradient(135deg, #ffa726 0%, #fb8c00 100%);
}

.stat-content {
    flex: 1;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--color-gray-600);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Estado vacío */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.empty-state svg {
    width: 100px;
    height: 100px;
    color: var(--color-gray-300);
    margin-bottom: var(--spacing-md);
}

.empty-state h3 {
    font-size: 1.5rem;
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-xs);
}

.empty-state p {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
}

/* Lista de captaciones */
.captaciones-list {
    display: grid;
    gap: var(--spacing-md);
}

.captacion-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all var(--transition-base);
}

.captacion-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.captacion-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-white) 100%);
    border-bottom: 1px solid var(--color-gray-200);
}

.captacion-code {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 700;
    color: var(--color-primary);
    font-size: 1.1rem;
}

.captacion-code svg {
    width: 24px;
    height: 24px;
}

/* Badges */
.badge {
    padding: 0.4rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

.badge-finalizada {
    background: #e0f2f1;
    color: #00695c;
}

.badge-enviada {
    background: #e3f2fd;
    color: #1565c0;
}

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

.captacion-info h3 {
    font-size: 1.3rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.captacion-info .empresa {
    color: var(--color-gray-600);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-xs);
}

.captacion-info .referencia {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-gray-700);
    font-size: 0.9rem;
    margin-top: var(--spacing-sm);
}

.captacion-info .referencia svg {
    width: 16px;
    height: 16px;
    color: var(--color-accent);
}

.captacion-meta {
    display: flex;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-gray-600);
    font-size: 0.85rem;
}

.meta-item svg {
    width: 16px;
    height: 16px;
    color: var(--color-accent);
}

.captacion-footer {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--color-gray-50);
    border-top: 1px solid var(--color-gray-200);
}

/* ========================================
   FORMULARIO DE CAPTACIÓN
======================================== */
.captacion-form {
    max-width: 900px;
    margin: 0 auto;
}

.form-section {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.section-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--color-gray-200);
}

.section-header svg {
    width: 28px;
    height: 28px;
    color: var(--color-primary);
    stroke-width: 2;
}

.section-header h2 {
    font-size: 1.5rem;
    color: var(--color-primary);
    font-weight: 700;
}

.section-header-with-action {
    justify-content: space-between;
}

.section-header-with-action > div {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* Items de captación */
#itemsContainer {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.item-card {
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    background: var(--color-gray-50);
    position: relative;
}

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

.item-number {
    font-weight: 700;
    color: var(--color-primary);
    font-size: 1.2rem;
}

.btn-remove-item {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    border: none;
    background: var(--color-error);
    color: var(--color-white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.btn-remove-item:hover {
    background: #d32f2f;
    transform: scale(1.1);
}

.btn-remove-item svg {
    width: 18px;
    height: 18px;
}

/* Previsualización de imágenes */
.image-upload-area {
    margin-top: var(--spacing-md);
}

.image-upload-btn {
    width: 100%;
    padding: var(--spacing-lg);
    border: 2px dashed var(--color-gray-300);
    border-radius: var(--radius-md);
    background: var(--color-white);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-gray-600);
}

.image-upload-btn:hover {
    border-color: var(--color-primary);
    background: var(--color-gray-50);
}

.image-upload-btn svg {
    width: 40px;
    height: 40px;
    color: var(--color-primary);
}

.image-preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.image-preview-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 2px solid var(--color-gray-300);
}

.image-preview-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.btn-remove-image {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 24px;
    height: 24px;
    border-radius: var(--radius-full);
    border: none;
    background: var(--color-error);
    color: var(--color-white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.image-preview-item:hover .btn-remove-image {
    opacity: 1;
}

.btn-remove-image svg {
    width: 14px;
    height: 14px;
}

/* Firma del cliente */
.firma-container {
    text-align: center;
}

.firma-instrucciones {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    background: #e3f2fd;
    border-radius: var(--radius-md);
    color: #1565c0;
    margin-bottom: var(--spacing-md);
    font-size: 0.9rem;
}

.firma-instrucciones svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.firma-canvas-container {
    border: 3px solid var(--color-primary);
    border-radius: var(--radius-md);
    background: var(--color-white);
    overflow: hidden;
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

#canvasFirma {
    display: block;
    width: 100%;
    height: auto;
    cursor: crosshair;
    touch-action: none;
}

.firma-actions {
    display: flex;
    justify-content: center;
}

/* Acciones del formulario */
.form-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-width: 900px;
    margin: 0 auto;
}

/* Loading overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(26, 35, 50, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loading-spinner {
    text-align: center;
    color: var(--color-white);
}

.spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.2);
    border-top-color: var(--color-white);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto var(--spacing-md);
}

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

.loading-spinner p {
    font-size: 1.1rem;
    font-weight: 500;
}

/* ========================================
   RESPONSIVE
======================================== */
@media (min-width: 768px) {
    .dashboard-header {
        flex-direction: row;
        justify-content: space-between;
        align-items: flex-start;
    }
    
    .form-actions {
        flex-direction: row;
    }
}

@media (max-width: 767px) {
    html {
        font-size: 14px;
    }
    
    .app-main {
        padding: var(--spacing-md);
    }
    
    .user-info span {
        display: none;
    }
    
    .captacion-meta {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .captacion-footer {
        flex-direction: column;
    }
}

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

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }

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

.hidden {
    display: none !important;
}