/* ============================================
   CONSORCIA - DESIGN SYSTEM & STYLES
   ============================================ */

/* ============================================
   CSS RESET & BASE
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette */
    --primary: hsl(220, 90%, 56%);
    --primary-dark: hsl(220, 90%, 46%);
    --primary-light: hsl(220, 90%, 66%);
    --secondary: hsl(280, 70%, 60%);
    --success: hsl(142, 71%, 45%);
    --warning: hsl(38, 92%, 50%);
    --danger: hsl(0, 84%, 60%);
    --info: hsl(199, 89%, 48%);
    
    /* Neutral Colors */
    --bg-primary: hsl(220, 20%, 10%);
    --bg-secondary: hsl(220, 18%, 14%);
    --bg-tertiary: hsl(220, 16%, 18%);
    --surface: hsl(220, 15%, 22%);
    --surface-hover: hsl(220, 15%, 26%);
    
    /* Text Colors */
    --text-primary: hsl(0, 0%, 98%);
    --text-secondary: hsl(0, 0%, 75%);
    --text-tertiary: hsl(0, 0%, 55%);
    
    /* Borders */
    --border-color: hsl(220, 15%, 30%);
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.3);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 3rem;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

.flex {
    display: flex;
}

.flex-col {
    display: flex;
    flex-direction: column;
}

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

.justify-between {
    justify-content: space-between;
}

.gap-sm {
    gap: var(--spacing-sm);
}

.gap-md {
    gap: var(--spacing-md);
}

.gap-lg {
    gap: var(--spacing-lg);
}

/* ============================================
   CARD COMPONENT
   ============================================ */
.card {
    background: var(--surface);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

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

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

.card-content {
    color: var(--text-secondary);
}

/* ============================================
   BUTTON COMPONENT
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--border-radius-sm);
    font-family: var(--font-family);
    font-size: var(--font-size-md);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--surface);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--surface-hover);
    border-color: var(--primary);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover:not(:disabled) {
    background: var(--surface);
    color: var(--text-primary);
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-sm);
}

.btn-md {
    padding: var(--spacing-sm) var(--spacing-lg);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
}

/* ============================================
   MODAL COMPONENT
   ============================================ */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base);
}

.modal.active {
    opacity: 1;
    pointer-events: all;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
}

.modal-dialog {
    position: relative;
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow: hidden;
    border: 1px solid var(--border-color);
    animation: modalSlideIn var(--transition-base);
}

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

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

.modal-header h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--text-secondary);
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--surface);
    color: var(--text-primary);
}

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    max-height: calc(90vh - 200px);
}

.modal-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

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

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

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

.form-input,
.form-select {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: var(--font-size-md);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-input::placeholder {
    color: var(--text-tertiary);
}

/* ============================================
   BADGE COMPONENT
   ============================================ */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-nuevo {
    background: var(--danger);
    color: white;
}

.badge-en-gestión {
    background: var(--warning);
    color: var(--bg-primary);
}

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

/* ============================================
   STAT CARD COMPONENT
   ============================================ */
.stat-card {
    background: var(--surface);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

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

.stat-card.stat-primary::before {
    background: var(--primary);
}

.stat-card.stat-success::before {
    background: var(--success);
}

.stat-card.stat-warning::before {
    background: var(--warning);
}

.stat-card.stat-info::before {
    background: var(--info);
}

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

.stat-icon {
    font-size: 2.5rem;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius-sm);
}

.stat-content {
    flex: 1;
}

.stat-title {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
}

.stat-trend {
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-top: 0.25rem;
}

.trend-up {
    color: var(--success);
}

.trend-down {
    color: var(--danger);
}

/* ============================================
   EVENT TIMELINE ITEM
   ============================================ */
.event-item {
    background: var(--surface);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    display: grid;
    grid-template-columns: 120px 1fr auto;
    gap: var(--spacing-lg);
    align-items: center;
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
    margin-bottom: var(--spacing-md);
}

.event-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

.event-image {
    width: 120px;
    height: 80px;
    border-radius: var(--border-radius-sm);
    overflow: hidden;
}

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

.event-info {
    flex: 1;
}

.event-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.event-type {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.event-details {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.event-details p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.event-time {
    color: var(--text-tertiary);
    font-size: var(--font-size-xs);
}

.event-metadata {
    color: var(--info);
    font-weight: 500;
}

.event-actions {
    display: flex;
    gap: var(--spacing-sm);
}

/* ============================================
   LOADING SPINNER
   ============================================ */
.loading-spinner {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.loading-sm .spinner {
    width: 24px;
    height: 24px;
    border-width: 3px;
}

.loading-lg .spinner {
    width: 60px;
    height: 60px;
    border-width: 5px;
}

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

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */
.toast-container {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    background: var(--surface);
    color: var(--text-primary);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-lg);
    border-left: 4px solid var(--primary);
    min-width: 300px;
    opacity: 0;
    transform: translateX(400px);
    transition: all var(--transition-base);
}

.toast.show {
    opacity: 1;
    transform: translateX(0);
}

.toast-success {
    border-left-color: var(--success);
}

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

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

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

/* ============================================
   LOGIN PAGE
   ============================================ */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-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(59, 130, 246, 0.1) 0%, transparent 70%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0);
    }
    50% {
        transform: translate(-100px, 100px);
    }
}

.login-container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 450px;
    padding: var(--spacing-lg);
}

.login-branding {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.logo-icon {
    font-size: 3rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo h1 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    color: var(--text-secondary);
    font-size: var(--font-size-lg);
}

.login-form {
    background: var(--surface);
    padding: var(--spacing-2xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.login-form h2 {
    margin-bottom: var(--spacing-xl);
    text-align: center;
    font-size: var(--font-size-xl);
}

.forgot-password {
    display: block;
    text-align: center;
    margin-top: var(--spacing-md);
    color: var(--primary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.forgot-password:hover {
    color: var(--primary-light);
}

/* ============================================
   SELECTION PAGE
   ============================================ */
.selection-page {
    min-height: 100vh;
    padding: var(--spacing-2xl);
    background: var(--bg-primary);
}

.selection-container {
    max-width: 1200px;
    margin: 0 auto;
}

.selection-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.selection-header h1 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-sm);
}

.selection-header p {
    color: var(--text-secondary);
    font-size: var(--font-size-lg);
}

.consorcio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.consorcio-card {
    cursor: pointer;
    text-align: center;
}

.consorcio-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
}

.consorcio-card h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
}

.consorcio-card p {
    color: var(--text-secondary);
}

.consorcio-address {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

/* ============================================
   DASHBOARD LAYOUT
   ============================================ */
.dashboard-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    min-height: 100vh;
}

/* ============================================
   SIDEBAR
   ============================================ */
.sidebar {
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.sidebar-nav {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.sidebar-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.sidebar-item:hover {
    background: var(--surface);
    color: var(--text-primary);
}

.sidebar-item.active {
    background: var(--primary);
    color: white;
}

.item-icon {
    font-size: 1.5rem;
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--surface);
    border-radius: var(--border-radius-sm);
}

.user-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.user-info {
    flex: 1;
}

.user-name {
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.user-role {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    text-transform: capitalize;
}

/* ============================================
   DASHBOARD MAIN
   ============================================ */
.dashboard-main {
    padding: var(--spacing-xl);
    overflow-y: auto;
}

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

.dashboard-header h1 {
    font-size: var(--font-size-2xl);
    margin-bottom: 0.25rem;
}

.dashboard-header p {
    color: var(--text-secondary);
}

.header-actions {
    display: flex;
    gap: var(--spacing-md);
}

/* ============================================
   STATS SECTION
   ============================================ */
.stats-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

/* ============================================
   EVENTS SECTION
   ============================================ */
.events-section {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    border: 1px solid var(--border-color);
}

.section-header {
    margin-bottom: var(--spacing-lg);
}

.section-header h2 {
    font-size: var(--font-size-xl);
}

.events-timeline {
    display: flex;
    flex-direction: column;
}

.no-events {
    text-align: center;
    color: var(--text-tertiary);
    padding: var(--spacing-2xl);
}

/* ============================================
   EVENT DETAIL PAGE
   ============================================ */
.event-detail-card {
    background: var(--surface);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    border: 1px solid var(--border-color);
    max-width: 800px;
}

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

.event-detail-header h1 {
    font-size: var(--font-size-2xl);
}

.event-detail-image {
    width: 100%;
    border-radius: var(--border-radius);
    overflow: hidden;
    margin-bottom: var(--spacing-xl);
}

.event-detail-image img {
    width: 100%;
    height: auto;
}

.event-detail-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.info-row {
    display: flex;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--border-radius-sm);
}

.info-label {
    font-weight: 600;
    color: var(--text-secondary);
    min-width: 150px;
}

.info-value {
    color: var(--text-primary);
}

/* ============================================
   HEALTH MONITOR
   ============================================ */
.health-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.health-card {
    position: relative;
    padding-left: calc(var(--spacing-lg) + 12px);
}

.health-status-indicator {
    position: absolute;
    left: var(--spacing-lg);
    top: var(--spacing-lg);
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--success);
}

.health-card.health-online .health-status-indicator {
    background: var(--success);
    box-shadow: 0 0 10px var(--success);
}

.health-card.health-warning .health-status-indicator {
    background: var(--warning);
    box-shadow: 0 0 10px var(--warning);
}

.health-card.health-offline .health-status-indicator {
    background: var(--danger);
    box-shadow: 0 0 10px var(--danger);
}

.health-status {
    font-weight: 600;
    margin: var(--spacing-sm) 0;
}

.health-last-seen {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
    .dashboard-layout {
        grid-template-columns: 1fr;
    }

    .sidebar {
        display: none;
    }

    .stats-section {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }

    .event-item {
        grid-template-columns: 100px 1fr;
        gap: var(--spacing-md);
    }

    .event-actions {
        grid-column: 2;
        margin-top: var(--spacing-sm);
    }
}

@media (max-width: 640px) {
    .event-item {
        grid-template-columns: 1fr;
    }

    .event-image {
        width: 100%;
        height: 200px;
    }

    .stats-section {
        grid-template-columns: 1fr;
    }

    .consorcio-grid {
        grid-template-columns: 1fr;
    }
}

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

.fade-in {
    animation: fadeIn var(--transition-base);
}

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

.slide-in-right {
    animation: slideInRight var(--transition-base);
}

/* Connection Status Indicator */
.connection-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.connection-status.connected {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.connection-status.disconnected {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

.connection-status .status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: currentColor;
}

.connection-status.connected .status-dot {
    animation: pulse-status 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

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