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

/* Variables CSS para el tema futurista */
:root {
    /* Colores principales */
    --primary-cyan: #00FFFF;
    --primary-cyan-dark: #00D1D1;
    --neon-magenta: #FF00FF;
    --electric-blue: #007BFF;
    --hacker-green: #00FF7F;
    --error-red: #FF453A;
    
    /* Colores de superficie */
    --bg-black: #000000;
    --bg-surface: #0A0A0A;
    --border-dark: #222222;
    --text-primary: #E4E4E7;
    --text-secondary: #888888;
    
    /* Efectos de resplandor */
    --glow-primary: 0 0 12px 0 var(--primary-cyan), 0 0 2px 0 var(--primary-cyan);
    --glow-focus: 0 0 24px 0 var(--primary-cyan), 0 0 8px 0 var(--primary-cyan);
    --glow-magenta: 0 0 12px 0 var(--neon-magenta);
    --glow-green: 0 0 12px 0 var(--hacker-green);
    
    /* Fuentes */
    --font-display: 'Orbitron', monospace;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Espaciado */
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 24px;
    --space-lg: 32px;
    --space-xl: 48px;
    --space-xxl: 96px;
}

/* Body y configuración general */
body {
    font-family: var(--font-mono);
    background: var(--bg-black);
    color: var(--text-primary);
    overflow-x: hidden;
    position: relative;
}

/* Fondo de partículas animado */
.particles-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: radial-gradient(ellipse at center, rgba(0, 255, 255, 0.1) 0%, transparent 70%);
}

.particles-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(2px 2px at 20px 30px, var(--primary-cyan), transparent),
        radial-gradient(2px 2px at 40px 70px, var(--neon-magenta), transparent),
        radial-gradient(1px 1px at 90px 40px, var(--electric-blue), transparent),
        radial-gradient(1px 1px at 130px 80px, var(--hacker-green), transparent),
        radial-gradient(2px 2px at 160px 30px, var(--primary-cyan), transparent);
    background-repeat: repeat;
    background-size: 200px 100px;
    animation: particleFloat 20s linear infinite;
    opacity: 0.3;
}

@keyframes particleFloat {
    0% { transform: translateY(100vh) translateX(-50px); }
    100% { transform: translateY(-100px) translateX(50px); }
}

/* Container principal */
.container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: var(--space-lg);
    max-width: 800px;
    margin: 0 auto;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: var(--space-xxl);
}

.logo {
    font-family: var(--font-display);
    font-size: 61px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    text-shadow: var(--glow-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
}

.logo-separator {
    color: var(--primary-cyan);
    animation: pulse 2s infinite;
}

.glitch {
    position: relative;
    display: inline-block;
}

.glitch::before,
.glitch::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
}

.glitch::before {
    color: var(--neon-magenta);
    animation: glitch 3s infinite;
}

.glitch::after {
    color: var(--electric-blue);
    animation: glitch 3s infinite reverse;
}

@keyframes glitch {
    0%, 14%, 15%, 49%, 50%, 99%, 100% {
        opacity: 0;
        transform: translate(0);
    }
    15%, 49% {
        opacity: 1;
        transform: translate(-2px, 2px);
    }
}

.subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
}

.dashboard-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-surface);
    border: 1px solid var(--border-dark);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 4px;
    transition: all 0.3s ease;
    font-family: var(--font-mono);
}

.dashboard-btn:hover {
    border-color: var(--primary-cyan);
    box-shadow: var(--glow-primary);
    transform: translateY(-2px);
}

/* Formulario principal */
.form-container {
    width: 100%;
    margin-bottom: var(--space-xl);
}

.input-group {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    align-items: stretch;
}

.url-input {
    flex: 1;
    height: 64px;
    padding: 0 var(--space-lg);
    background: var(--bg-surface);
    border: 1px solid var(--border-dark);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 16px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.url-input::placeholder {
    color: var(--text-secondary);
}

.url-input:focus {
    outline: none;
    border-color: var(--primary-cyan);
    box-shadow: var(--glow-focus);
}

.shorten-btn {
    height: 64px;
    padding: 0 var(--space-xl);
    background: var(--primary-cyan);
    border: none;
    color: var(--bg-black);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 14px;
    letter-spacing: 1px;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 1, 0.5, 1);
    position: relative;
    overflow: hidden;
    min-width: 120px;
}

.shorten-btn:hover {
    background: var(--primary-cyan-dark);
    transform: scale(1.03);
    box-shadow: var(--glow-primary);
}

.shorten-btn:active {
    transform: scale(0.98);
}

.shorten-btn.loading {
    pointer-events: none;
}

.loading-spinner {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid var(--bg-black);
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Captcha */
.captcha-container {
    margin-bottom: var(--space-lg);
}

.captcha-label {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: var(--space-xs);
}

.captcha-box {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    background: var(--bg-surface);
    border: 1px solid var(--border-dark);
    border-radius: 4px;
}

.captcha-numbers {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-cyan);
    font-family: var(--font-display);
    text-shadow: var(--glow-primary);
}

.captcha-input {
    width: 80px;
    padding: var(--space-sm);
    background: var(--bg-black);
    border: 1px solid var(--border-dark);
    color: var(--text-primary);
    font-family: var(--font-mono);
    border-radius: 4px;
    text-align: center;
}

.captcha-input:focus {
    outline: none;
    border-color: var(--primary-cyan);
    box-shadow: var(--glow-focus);
}

/* Mensajes de error */
.error-message {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-md);
    background: rgba(255, 69, 58, 0.1);
    border: 1px solid var(--error-red);
    color: var(--error-red);
    border-radius: 4px;
    margin-bottom: var(--space-lg);
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

/* Resultado */
.result-container {
    width: 100%;
    margin-bottom: var(--space-xl);
}

.result-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-dark);
    padding: var(--space-lg);
    border-radius: 4px;
    animation: slideUp 0.5s ease-out;
}

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

.result-header h3 {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--primary-cyan);
    margin-bottom: var(--space-md);
    font-family: var(--font-display);
}

.original-url, .short-url {
    margin-bottom: var(--space-md);
}

.original-url label, .short-url label {
    display: block;
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
}

.url-display {
    padding: var(--space-md);
    background: var(--bg-black);
    border: 1px solid var(--border-dark);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 14px;
    word-break: break-all;
    color: var(--text-primary);
}

.url-display.short {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-color: var(--electric-blue);
    box-shadow: 0 0 8px rgba(0, 123, 255, 0.3);
}

.copy-btn {
    padding: var(--space-xs);
    background: var(--electric-blue);
    border: none;
    color: white;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.copy-btn:hover {
    background: var(--primary-cyan);
    box-shadow: var(--glow-primary);
}

/* Botones de acción */
.action-buttons {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.action-btn {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--border-dark);
    background: var(--bg-surface);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 14px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.action-btn.primary {
    border-color: var(--hacker-green);
    color: var(--hacker-green);
}

.action-btn.primary:hover {
    background: var(--hacker-green);
    color: var(--bg-black);
    box-shadow: var(--glow-green);
}

.action-btn.secondary {
    border-color: var(--neon-magenta);
    color: var(--neon-magenta);
}

.action-btn.secondary:hover {
    background: var(--neon-magenta);
    color: var(--bg-black);
    box-shadow: var(--glow-magenta);
}

/* Estadísticas de preview */
.stats-preview {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
    width: 100%;
}

.stat-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-dark);
    padding: var(--space-lg);
    border-radius: 4px;
    text-align: center;
    transition: all 0.3s ease;
}

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

.stat-card i {
    font-size: 24px;
    color: var(--primary-cyan);
    margin-bottom: var(--space-sm);
}

.stat-number {
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-cyan);
    margin-bottom: var(--space-xs);
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
}

/* DASHBOARD STYLES */
.dashboard-body {
    background: var(--bg-black);
}

.dashboard-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--space-lg);
}

.dashboard-header {
    margin-bottom: var(--space-xl);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.dashboard-title {
    font-family: var(--font-display);
    font-size: 40px;
    color: var(--primary-cyan);
    text-shadow: var(--glow-primary);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.dashboard-nav {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-surface);
    border: 1px solid var(--border-dark);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 4px;
    transition: all 0.3s ease;
    font-family: var(--font-mono);
}

.nav-btn:hover {
    border-color: var(--primary-cyan);
    box-shadow: var(--glow-primary);
}

.nav-btn.logout:hover {
    border-color: var(--error-red);
    box-shadow: 0 0 12px rgba(255, 69, 58, 0.5);
}

/* Grid de estadísticas */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.dashboard-stat {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    text-align: left;
}

.dashboard-stat .stat-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 255, 255, 0.1);
    border-radius: 4px;
}

.dashboard-stat .stat-icon i {
    font-size: 28px;
    margin: 0;
}

.dashboard-stat .stat-number {
    font-size: 28px;
    margin-bottom: var(--space-xs);
}

.dashboard-stat .stat-label {
    font-size: 12px;
}

/* Sección de gráficos */
.chart-section {
    margin-bottom: var(--space-xl);
}

.chart-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-dark);
    border-radius: 4px;
    overflow: hidden;
}

.chart-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border-dark);
}

.chart-header h3 {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--primary-cyan);
    font-family: var(--font-display);
}

.chart-container {
    padding: var(--space-lg);
    height: 300px;
}

/* Dashboard main content */
.dashboard-main {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--space-xl);
}

/* Sección de populares */
.popular-section {
    background: var(--bg-surface);
    border: 1px solid var(--border-dark);
    border-radius: 4px;
}

.section-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border-dark);
}

.section-header h3 {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--neon-magenta);
    font-family: var(--font-display);
}

.popular-list {
    max-height: 400px;
    overflow-y: auto;
}

.popular-item {
    display: flex;
    align-items: center;
    padding: var(--space-md);
    border-bottom: 1px solid var(--border-dark);
    gap: var(--space-sm);
}

.popular-item:last-child {
    border-bottom: none;
}

.item-info {
    flex: 1;
    min-width: 0;
}

.item-url {
    font-size: 12px;
    color: var(--text-primary);
    margin-bottom: 4px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.item-code {
    font-size: 10px;
    color: var(--primary-cyan);
    font-family: var(--font-display);
    font-weight: 700;
}

.item-stats {
    text-align: right;
}

.stat-clicks {
    display: flex;
    align-items: center;
    gap: 4px;
    color: var(--hacker-green);
    font-size: 12px;
    margin-bottom: 4px;
}

.item-date {
    font-size: 10px;
    color: var(--text-secondary);
}

.copy-short-btn {
    padding: var(--space-xs);
    background: transparent;
    border: 1px solid var(--border-dark);
    color: var(--text-secondary);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.copy-short-btn:hover {
    border-color: var(--primary-cyan);
    color: var(--primary-cyan);
    box-shadow: var(--glow-primary);
}

/* Sección de historial */
.history-section {
    background: var(--bg-surface);
    border: 1px solid var(--border-dark);
    border-radius: 4px;
}

.section-controls {
    display: flex;
    gap: var(--space-sm);
    align-items: center;
}

.search-input, .sort-select {
    padding: var(--space-sm);
    background: var(--bg-black);
    border: 1px solid var(--border-dark);
    color: var(--text-primary);
    font-family: var(--font-mono);
    border-radius: 4px;
}

.search-input:focus, .sort-select:focus {
    outline: none;
    border-color: var(--primary-cyan);
    box-shadow: var(--glow-focus);
}

/* Tabla de historial */
.history-table-container {
    overflow-x: auto;
    max-height: 500px;
    overflow-y: auto;
}

.history-table {
    width: 100%;
    border-collapse: collapse;
}

.history-table th {
    position: sticky;
    top: 0;
    background: var(--bg-black);
    padding: var(--space-md);
    text-align: left;
    border-bottom: 1px solid var(--border-dark);
    font-weight: 700;
    color: var(--primary-cyan);
    font-family: var(--font-display);
}

.history-table td {
    padding: var(--space-md);
    border-bottom: 1px solid var(--border-dark);
    vertical-align: middle;
}

.table-row:hover {
    background: rgba(0, 255, 255, 0.05);
}

.url-cell {
    max-width: 300px;
}

.url-text {
    font-size: 12px;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.short-code {
    font-family: var(--font-display);
    font-weight: 700;
    color: var(--primary-cyan);
    background: rgba(0, 255, 255, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 12px;
}

.clicks-count {
    color: var(--hacker-green);
    font-weight: 700;
}

.date-cell, .last-visit-cell {
    font-size: 12px;
    color: var(--text-secondary);
    white-space: nowrap;
}

.actions-cell {
    white-space: nowrap;
}

.action-btn-small {
    padding: var(--space-xs);
    background: transparent;
    border: 1px solid var(--border-dark);
    color: var(--text-secondary);
    border-radius: 4px;
    cursor: pointer;
    margin-right: 4px;
    transition: all 0.3s ease;
}

.action-btn-small:hover {
    border-color: var(--primary-cyan);
    color: var(--primary-cyan);
    box-shadow: var(--glow-primary);
}

.delete-btn:hover {
    border-color: var(--error-red);
    color: var(--error-red);
    box-shadow: 0 0 12px rgba(255, 69, 58, 0.5);
}

/* Estados vacíos */
.empty-state {
    text-align: center;
    padding: var(--space-xl);
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 48px;
    margin-bottom: var(--space-md);
    color: var(--border-dark);
}

/* Loading overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loading-content {
    text-align: center;
}

.loading-spinner-large {
    width: 50px;
    height: 50px;
    border: 3px solid var(--border-dark);
    border-top: 3px solid var(--primary-cyan);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--space-md);
}

/* LOGIN STYLES */
.login-body {
    background: var(--bg-black);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: var(--space-lg);
}

.login-container {
    width: 100%;
    max-width: 400px;
}

.login-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-dark);
    border-radius: 8px;
    padding: var(--space-xl);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

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

.login-title {
    font-family: var(--font-display);
    font-size: 28px;
    color: var(--primary-cyan);
    margin-bottom: var(--space-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
}

.login-subtitle {
    color: var(--text-secondary);
    font-size: 14px;
}

.login-form {
    margin-bottom: var(--space-lg);
}

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

.form-label {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
    font-weight: 500;
}

.form-input {
    width: 100%;
    padding: var(--space-md);
    background: var(--bg-black);
    border: 1px solid var(--border-dark);
    color: var(--text-primary);
    font-family: var(--font-mono);
    border-radius: 4px;
    transition: all 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-cyan);
    box-shadow: var(--glow-focus);
}

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

.login-btn {
    width: 100%;
    padding: var(--space-md);
    background: var(--primary-cyan);
    border: none;
    color: var(--bg-black);
    font-family: var(--font-display);
    font-weight: 700;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
}

.login-btn:hover {
    background: var(--primary-cyan-dark);
    box-shadow: var(--glow-primary);
    transform: translateY(-2px);
}

.login-footer {
    text-align: center;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.back-link:hover {
    color: var(--primary-cyan);
}

/* Utilidades */
.text-center { text-align: center; }
.text-success { color: var(--hacker-green); }
.text-error { color: var(--error-red); }
.text-primary { color: var(--primary-cyan); }
.text-secondary { color: var(--text-secondary); }

/* Responsivo */
@media (max-width: 768px) {
    .container {
        padding: var(--space-md);
    }
    
    .logo {
        font-size: 40px;
        flex-direction: column;
        gap: var(--space-xs);
    }
    
    .input-group {
        flex-direction: column;
    }
    
    .dashboard-main {
        grid-template-columns: 1fr;
    }
    
    .header-content {
        flex-direction: column;
        text-align: center;
    }
    
    .dashboard-nav {
        justify-content: center;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .section-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .popular-item {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-sm);
    }
    
    .item-stats {
        text-align: left;
    }
    
    .history-table-container {
        font-size: 12px;
    }
    
    .history-table th,
    .history-table td {
        padding: var(--space-sm);
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 32px;
    }
    
    .url-input,
    .shorten-btn {
        height: 56px;
    }
    
    .captcha-box {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-xs);
    }
    
    .captcha-input {
        width: 100%;
    }
}

/* Animaciones adicionales */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes glow {
    0%, 100% { box-shadow: var(--glow-primary); }
    50% { box-shadow: 0 0 30px 0 var(--primary-cyan), 0 0 10px 0 var(--primary-cyan); }
}

.glow-active {
    animation: glow 2s infinite;
}

/* Scrollbar personalizada */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-black);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-cyan);
}

/* Selection */
::selection {
    background: rgba(0, 255, 255, 0.3);
    color: var(--text-primary);
}