/* ============================================
   SISTEMA DE ASISTENCIA BIOMÉTRICA
   Estilos Principales
   ============================================ */

/* ============================================
   VARIABLES Y RESET
   ============================================ */

:root {
    /* Colores Principales */
    --color-primary: #1e40af;
    --color-primary-dark: #1e3a8a;
    --color-primary-light: #3b82f6;
    
    --color-secondary: #10b981;
    --color-secondary-dark: #059669;
    
    --color-danger: #ef4444;
    --color-danger-dark: #dc2626;
    
    --color-warning: #f59e0b;
    --color-info: #3b82f6;
    
    /* Colores de Fondo */
    --bg-primary: #ffffff;
    --bg-secondary: #f3f4f6;
    --bg-tertiary: #e5e7eb;
    
    /* Colores de Texto */
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-tertiary: #9ca3af;
    
    /* 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);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Bordes */
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    
    /* Espaciado */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* Transiciones */
    --transition: all 0.3s ease;
}

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

html, body {
    height: 100%;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.5;
    color: var(--text-primary);
    background: var(--bg-secondary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   LOADING SCREEN
   ============================================ */

.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loader {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.loading-screen p {
    color: white;
    margin-top: var(--spacing-lg);
    font-size: 1.1rem;
}

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

/* ============================================
   APP CONTAINER
   ============================================ */

.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ============================================
   HEADER
   ============================================ */

.app-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

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

.logo-icon {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-icon svg {
    width: 28px;
    height: 28px;
}

.app-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
}

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

.date-time {
    font-size: 0.95rem;
    font-weight: 500;
}

.btn-icon {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: var(--border-radius);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.btn-icon:hover {
    background: rgba(255, 255, 255, 0.3);
}

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

/* ============================================
   MAIN CONTENT
   ============================================ */

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

/* ============================================
   SECTIONS
   ============================================ */

.section {
    display: none;
}

.section.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

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

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

.section-header h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.btn-back {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border: none;
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: var(--spacing-lg);
}

.btn-back:hover {
    background: var(--bg-secondary);
}

.btn-back svg {
    width: 20px;
    height: 20px;
}

/* ============================================
   CARD GRID & OPTIONS
   ============================================ */

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    max-width: 800px;
    margin: 0 auto;
}

.card-option {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    border: 2px solid transparent;
}

.card-option:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary);
}

.card-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-icon.blue {
    background: linear-gradient(135deg, #3b82f6 0%, #1e40af 100%);
}

.card-icon.green {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.card-icon.red {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
}

.card-icon svg {
    width: 40px;
    height: 40px;
    color: white;
}

.card-option h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.card-option p {
    font-size: 1rem;
    color: var(--text-secondary);
}

/* ============================================
   FORM CONTAINER
   ============================================ */

.form-container {
    max-width: 700px;
    margin: 0 auto;
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
}

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

.form-group label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-size: 0.95rem;
}

.form-group label svg {
    width: 20px;
    height: 20px;
    color: var(--color-primary);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--bg-tertiary);
    border-radius: var(--border-radius);
    font-size: 1rem;
    color: var(--text-primary);
    background: var(--bg-primary);
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

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

.form-hint {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.required {
    color: var(--color-danger);
}

/* ============================================
   INPUT GROUP
   ============================================ */

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

.input-group .form-control {
    flex: 1;
}

.btn-search {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 12px 20px;
    background: var(--color-primary);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

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

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

/* ============================================
   COLABORADORES SECTION
   ============================================ */

.colaboradores-section {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.section-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

.section-title h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 28px;
    height: 28px;
    padding: 0 var(--spacing-sm);
    background: var(--color-primary);
    color: white;
    border-radius: 14px;
    font-size: 0.9rem;
    font-weight: 700;
}

.btn-add {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 12px;
    background: var(--color-secondary);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-top: var(--spacing-md);
}

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

.btn-add svg {
    width: 20px;
    height: 20px;
}

/* ============================================
   LISTA COLABORADORES
   ============================================ */

.colaboradores-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.colaborador-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

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

.colaborador-avatar {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1rem;
}

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

.colaborador-nombre {
    font-weight: 600;
    color: var(--text-primary);
}

.colaborador-dni {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.btn-remove {
    width: 32px;
    height: 32px;
    background: var(--color-danger);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

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

/* ============================================
   CAMERA SECTION
   ============================================ */

.camera-section {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
}

.camera-container {
    position: relative;
    width: 100%;
    max-width: 500px;
    margin: 0 auto var(--spacing-md);
    background: #000;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    aspect-ratio: 4/3;
}

#video, #capturedImage {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.camera-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.camera-guide {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 70%;
    height: 70%;
    border: 3px dashed rgba(255, 255, 255, 0.5);
    border-radius: var(--border-radius-lg);
}

.camera-controls {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.btn-camera, .btn-capture, .btn-retake {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

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

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

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

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

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

.btn-retake:hover {
    filter: brightness(0.9);
}

.btn-camera svg, .btn-capture svg, .btn-retake svg {
    width: 20px;
    height: 20px;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn-primary {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 16px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    border: none;
    border-radius: var(--border-radius-lg);
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

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

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

.btn-primary:disabled {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    cursor: not-allowed;
    transform: none;
}

.btn-primary svg {
    width: 24px;
    height: 24px;
}

.btn-submit {
    margin-top: var(--spacing-xl);
}

/* ============================================
   FOOTER
   ============================================ */

.app-footer {
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    text-align: center;
    border-top: 1px solid var(--bg-tertiary);
    margin-top: auto;
}

.app-footer p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
}

.footer-status {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-secondary);
    animation: pulse 2s infinite;
}

.status-indicator.offline {
    background: var(--color-danger);
    animation: none;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

#statusText {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* ============================================
   MODALS
   ============================================ */

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

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-xl);
    max-width: 500px;
    width: 100%;
    text-align: center;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-icon.success {
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-secondary-dark) 100%);
}

.modal-icon.error {
    background: linear-gradient(135deg, var(--color-danger) 0%, var(--color-danger-dark) 100%);
}

.modal-icon svg {
    width: 40px;
    height: 40px;
    color: white;
}

.modal-content h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.modal-content p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.modal-resultados {
    text-align: left;
    margin-bottom: var(--spacing-lg);
}

.resultado-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
    border-radius: var(--border-radius);
    background: var(--bg-secondary);
}

.resultado-item.success {
    border-left: 4px solid var(--color-secondary);
}

.resultado-item.error {
    border-left: 4px solid var(--color-danger);
}

.resultado-icon {
    width: 20px;
    height: 20px;
}

.resultado-icon.success {
    color: var(--color-secondary);
}

.resultado-icon.error {
    color: var(--color-danger);
}

.resultado-text {
    flex: 1;
    font-size: 0.95rem;
}

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */

.toast-container {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    min-width: 300px;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.toast-icon {
    width: 24px;
    height: 24px;
}

.toast.success .toast-icon {
    color: var(--color-secondary);
}

.toast.error .toast-icon {
    color: var(--color-danger);
}

.toast.warning .toast-icon {
    color: var(--color-warning);
}

.toast.info .toast-icon {
    color: var(--color-info);
}

.toast-message {
    flex: 1;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.toast-close {
    width: 20px;
    height: 20px;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0;
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
    .main-content {
        padding: var(--spacing-lg);
    }
    
    .section-header h2 {
        font-size: 1.5rem;
    }
    
    .card-grid {
        grid-template-columns: 1fr;
    }
    
    .header-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .app-header h1 {
        font-size: 1.5rem;
    }
    
    .date-time {
        font-size: 0.85rem;
    }
    
    .form-container {
        padding: var(--spacing-lg);
    }
    
    .input-group {
        flex-direction: column;
    }
    
    .camera-controls {
        flex-direction: column;
    }
    
    .btn-camera, .btn-capture, .btn-retake {
        width: 100%;
    }
    
    .toast-container {
        left: var(--spacing-md);
        right: var(--spacing-md);
    }
    
    .toast {
        min-width: auto;
    }
}

@media (max-width: 480px) {
    .logo-icon {
        width: 36px;
        height: 36px;
    }
    
    .logo-icon svg {
        width: 20px;
        height: 20px;
    }
    
    .app-header h1 {
        font-size: 1.25rem;
    }
    
    .card-option {
        padding: var(--spacing-lg);
    }
    
    .card-icon {
        width: 60px;
        height: 60px;
    }
    
    .card-icon svg {
        width: 30px;
        height: 30px;
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
    .app-header,
    .app-footer,
    .btn-back,
    .camera-section,
    .btn-submit {
        display: none;
    }
    
    .main-content {
        padding: 0;
    }
}