/**
 * SMR/ASIR HUB - Estilos Principales
 * Estética: Terminal / ASCII Art / Cyberpunk
 * Paleta: Negro profundo, verde terminal, cyan, naranja, rosa
 */

/* ==================== VARIABLES CSS ==================== */
:root {
    /* Colores base */
    --bg-primary: #0a0e1a;
    --bg-secondary: #111827;
    --bg-tertiary: #1a2236;
    --bg-card: #151d2e;
    --bg-hover: #1e293b;
    --bg-code: #0d1117;
    
    /* Colores de acento */
    --terminal-green: #00ff41;
    --terminal-green-dim: #00cc33;
    --terminal-green-glow: rgba(0, 255, 65, 0.3);
    --cyan: #00d4ff;
    --cyan-glow: rgba(0, 212, 255, 0.3);
    --orange: #ff6b35;
    --pink: #ff3366;
    --yellow: #f7df1e;
    --purple: #b388ff;
    
    /* Texto */
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-dim: #475569;
    
    /* Bordes */
    --border-primary: rgba(0, 255, 65, 0.2);
    --border-secondary: rgba(148, 163, 184, 0.1);
    --border-glow: rgba(0, 255, 65, 0.4);
    
    /* Tipografía */
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
    --font-sans: 'Inter', -apple-system, sans-serif;
    
    /* Espaciado */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Radios */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Transiciones */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Nav height */
    --nav-height: 64px;
    
    /* Breakpoints */
    --bp-sm: 640px;
    --bp-md: 768px;
    --bp-lg: 1024px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

a {
    color: var(--terminal-green);
    text-decoration: none;
    transition: all var(--transition-fast);
}

a:hover {
    color: var(--cyan);
    text-shadow: 0 0 10px var(--cyan-glow);
}

pre, code {
    font-family: var(--font-mono);
}

/* ==================== ASCII BACKGROUND ==================== */
.ascii-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    opacity: 0.03;
    font-family: var(--font-mono);
    font-size: 12px;
    line-height: 1.2;
    white-space: pre;
    overflow: hidden;
    color: var(--terminal-green);
}

/* ==================== SCANLINES ==================== */
.scanlines {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9998;
    opacity: 0.03;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 0, 0, 0.15) 2px,
        rgba(0, 0, 0, 0.15) 4px
    );
}

/* ==================== MATRIX CANVAS ==================== */
.matrix-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    opacity: 0.08;
}

/* ==================== MAIN CONTENT ==================== */
.main-content {
    position: relative;
    z-index: 2;
    padding-top: var(--nav-height);
    min-height: 100vh;
}

/* ==================== NAVIGATION ==================== */
.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: rgba(10, 14, 26, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-secondary);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.main-nav.scrolled {
    background: rgba(10, 14, 26, 0.95);
    border-bottom-color: var(--border-primary);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Logo */
.nav-logo {
    display: flex;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.nav-logo:hover {
    color: var(--terminal-green);
    text-shadow: 0 0 20px var(--terminal-green-glow);
}

.logo-bracket {
    color: var(--terminal-green);
    font-weight: 800;
}

.logo-text {
    margin: 0 2px;
}

.logo-cursor {
    color: var(--terminal-green);
    animation: blink 1s step-end infinite;
}

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

/* Nav Links */
.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link::before {
    content: '>';
    position: absolute;
    left: -4px;
    opacity: 0;
    color: var(--terminal-green);
    transition: all var(--transition-fast);
}

.nav-link:hover {
    color: var(--terminal-green);
    background: rgba(0, 255, 65, 0.05);
    padding-left: calc(var(--space-md) + 8px);
}

.nav-link:hover::before {
    opacity: 1;
    left: 4px;
}

.nav-link.active {
    color: var(--terminal-green);
    background: rgba(0, 255, 65, 0.08);
    border: 1px solid var(--border-primary);
}

.nav-link.active::before {
    content: '>';
    opacity: 1;
    left: 4px;
}

.nav-icon {
    width: 16px;
    height: 16px;
}

.nav-admin {
    color: var(--orange) !important;
}

.nav-admin:hover {
    color: var(--orange) !important;
    background: rgba(255, 107, 53, 0.1) !important;
}

.nav-admin::before {
    color: var(--orange) !important;
}

/* Mobile Toggle */
.nav-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border-secondary);
    color: var(--text-primary);
    padding: var(--space-sm);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.nav-toggle:hover {
    border-color: var(--terminal-green);
    color: var(--terminal-green);
}

.icon-menu-close {
    display: none;
}

.nav-toggle.active .icon-menu-open {
    display: none;
}

.nav-toggle.active .icon-menu-close {
    display: block;
}

/* Auth Section */
.nav-auth {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-left: var(--space-lg);
    padding-left: var(--space-lg);
    border-left: 1px solid var(--border-secondary);
}

/* User Menu */
.user-menu {
    position: relative;
}

.user-menu-toggle {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    background: none;
    border: 1px solid var(--border-secondary);
    color: var(--text-primary);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    transition: all var(--transition-fast);
}

.user-menu-toggle:hover {
    border-color: var(--terminal-green);
    background: rgba(0, 255, 65, 0.05);
}

.user-avatar {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
}

.user-name {
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-chevron {
    width: 14px;
    height: 14px;
    transition: transform var(--transition-fast);
}

.user-menu.open .user-chevron {
    transform: rotate(180deg);
}

/* User Dropdown */
.user-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border-secondary);
    border-radius: var(--radius-lg);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.user-menu.open .user-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.user-dropdown-header {
    padding: var(--space-md);
    border-bottom: 1px solid var(--border-secondary);
}

.user-role-badge {
    display: inline-block;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: 0.7rem;
    font-family: var(--font-mono);
    font-weight: 700;
    letter-spacing: 1px;
}

.role-admin {
    background: rgba(255, 51, 102, 0.15);
    color: var(--pink);
    border: 1px solid rgba(255, 51, 102, 0.3);
}

.role-moderator {
    background: rgba(255, 107, 53, 0.15);
    color: var(--orange);
    border: 1px solid rgba(255, 107, 53, 0.3);
}

.role-user {
    background: rgba(0, 212, 255, 0.15);
    color: var(--cyan);
    border: 1px solid rgba(0, 212, 255, 0.3);
}

/* Notifications Menu */
.notif-menu {
    position: relative;
    margin-right: var(--space-sm);
}

.notif-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: 1px solid var(--border-secondary);
    color: var(--text-primary);
    padding: var(--space-xs);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    width: 36px;
    height: 36px;
}

.notif-toggle:hover {
    border-color: var(--terminal-green);
    background: rgba(0, 255, 65, 0.05);
}

.notif-badge {
    position: absolute;
    top: -4px;
    right: -6px;
    background: var(--pink);
    color: #fff;
    font-size: 0.6rem;
    font-weight: 700;
    font-family: var(--font-mono);
    min-width: 18px;
    height: 18px;
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
    border: 2px solid var(--bg-primary);
}

.notif-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border-secondary);
    border-radius: var(--radius-lg);
    width: 340px;
    max-height: 400px;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    z-index: 100;
}

.notif-menu.open .notif-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.notif-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md);
    border-bottom: 1px solid var(--border-secondary);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
}

.notif-mark-read {
    font-size: 0.7rem;
    color: var(--terminal-green);
    text-decoration: none;
}

.notif-mark-read:hover {
    text-decoration: underline;
}

.notif-list {
    max-height: 320px;
    overflow-y: auto;
}

.notif-empty {
    padding: var(--space-xl);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    font-family: var(--font-mono);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
}

.notif-item {
    display: flex;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    text-decoration: none;
    border-bottom: 1px solid var(--border-secondary);
    transition: background var(--transition-fast);
}

.notif-item:hover {
    background: color-mix(in srgb, var(--notif-item-color, rgba(0, 255, 65, 1)) 8%, transparent);
}

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

.notif-footer {
    border-top: 1px solid var(--border-secondary);
    padding: var(--space-sm) var(--space-md);
    text-align: center;
}

.notif-footer a {
    font-size: 0.75rem;
    color: var(--terminal-green);
    text-decoration: none;
    font-family: var(--font-mono);
}

.notif-footer a:hover {
    text-decoration: underline;
}

.notif-icon {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
    background: rgba(0, 212, 255, 0.1);
    color: var(--cyan);
    display: flex;
    align-items: center;
    justify-content: center;
}

.notif-content {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.notif-msg {
    font-size: 0.78rem;
    color: var(--text-primary);
    line-height: 1.3;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.notif-time {
    font-size: 0.65rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-family: var(--font-mono);
    transition: all var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--bg-hover);
    color: var(--terminal-green);
    padding-left: calc(var(--space-md) + 4px);
}

.dropdown-item i {
    width: 16px;
    height: 16px;
}

.dropdown-divider {
    height: 1px;
    background: var(--border-secondary);
    margin: var(--space-xs) 0;
}

.dropdown-logout {
    color: var(--pink);
}

.dropdown-logout:hover {
    color: #ff6688;
    background: rgba(255, 51, 102, 0.1);
}

/* ==================== BUTTONS ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
    text-decoration: none;
}

.btn-primary {
    background: var(--terminal-green);
    color: var(--bg-primary);
    border-color: var(--terminal-green);
    font-weight: 600;
}

.btn-primary:hover {
    background: var(--terminal-green-dim);
    box-shadow: 0 0 20px var(--terminal-green-glow);
    color: var(--bg-primary);
}

.btn-secondary {
    background: transparent;
    color: var(--cyan);
    border-color: var(--cyan);
}

.btn-secondary:hover {
    background: rgba(0, 212, 255, 0.1);
    box-shadow: 0 0 20px var(--cyan-glow);
}

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

.btn-ghost:hover {
    color: var(--text-primary);
    border-color: var(--text-muted);
    background: var(--bg-hover);
}

.btn-danger {
    background: transparent;
    color: var(--pink);
    border-color: var(--pink);
}

.btn-danger:hover {
    background: rgba(255, 51, 102, 0.1);
    box-shadow: 0 0 20px rgba(255, 51, 102, 0.3);
}

.btn-sm {
    padding: var(--space-xs) var(--space-md);
    font-size: 0.8rem;
}

.btn-lg {
    padding: var(--space-md) var(--space-xl);
    font-size: 1rem;
}

/* ==================== CARDS ==================== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--terminal-green), var(--cyan), var(--terminal-green));
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.card:hover {
    border-color: var(--border-primary);
    transform: translateY(-2px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.card:hover::before {
    opacity: 1;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--border-secondary);
}

.card-title {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.card-title i {
    color: var(--terminal-green);
}

/* ==================== FLASH MESSAGES ==================== */
.flash-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-lg);
}

.alert {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    border: 1px solid;
    animation: slideInDown 0.3s ease;
}

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

.alert-success {
    background: rgba(0, 255, 65, 0.1);
    border-color: var(--terminal-green);
    color: var(--terminal-green);
}

.alert-error {
    background: rgba(255, 51, 102, 0.1);
    border-color: var(--pink);
    color: #ff6688;
}

.alert-info {
    background: rgba(0, 212, 255, 0.1);
    border-color: var(--cyan);
    color: var(--cyan);
}

.alert-icon {
    font-size: 1.2rem;
    flex-shrink: 0;
}

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

.form-label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.form-label::before {
    content: '>';
    color: var(--terminal-green);
    margin-right: var(--space-sm);
}

.form-input {
    width: 100%;
    padding: var(--space-md);
    background: var(--bg-code);
    border: 1px solid var(--border-secondary);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    transition: all var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--terminal-green);
    box-shadow: 0 0 0 3px var(--terminal-green-glow);
}

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

textarea.form-input {
    min-height: 120px;
    resize: vertical;
}

/* ==================== BADGES ==================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-green {
    background: rgba(0, 255, 65, 0.15);
    color: var(--terminal-green);
    border: 1px solid var(--border-primary);
}

.badge-cyan {
    background: rgba(0, 212, 255, 0.15);
    color: var(--cyan);
    border: 1px solid rgba(0, 212, 255, 0.3);
}

.badge-orange {
    background: rgba(255, 107, 53, 0.15);
    color: var(--orange);
    border: 1px solid rgba(255, 107, 53, 0.3);
}

.badge-pink {
    background: rgba(255, 51, 102, 0.15);
    color: var(--pink);
    border: 1px solid rgba(255, 51, 102, 0.3);
}

/* ==================== TABLES ==================== */
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.data-table thead th {
    text-align: left;
    padding: var(--space-md);
    color: var(--text-muted);
    font-weight: 500;
    border-bottom: 2px solid var(--border-secondary);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 1px;
}

.data-table tbody tr {
    border-bottom: 1px solid var(--border-secondary);
    transition: all var(--transition-fast);
}

.data-table tbody tr:hover {
    background: var(--bg-hover);
}

.data-table tbody td {
    padding: var(--space-md);
    color: var(--text-secondary);
}

/* ==================== FOOTER ==================== */
.main-footer {
    position: relative;
    z-index: 2;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-secondary);
    padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.footer-brand {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.footer-ascii {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    line-height: 1.2;
    color: var(--terminal-green);
    opacity: 0.6;
    margin-bottom: var(--space-md);
    overflow-x: auto;
}

.footer-tagline {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: var(--space-sm);
}

.footer-version {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-dim);
}

.version-label {
    color: var(--terminal-green);
}

.version-separator {
    margin: 0 var(--space-sm);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
    padding-bottom: var(--space-2xl);
    border-bottom: 1px solid var(--border-secondary);
}

.footer-column {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-title {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.footer-title i {
    width: 16px;
    height: 16px;
    color: var(--terminal-green);
}

.footer-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-secondary);
    font-size: 0.85rem;
    padding: var(--space-xs) 0;
    transition: all var(--transition-fast);
}

.footer-link:hover {
    color: var(--terminal-green);
    padding-left: var(--space-sm);
}

.footer-stat {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-muted);
    font-size: 0.85rem;
    font-family: var(--font-mono);
}

.stat-icon {
    width: 14px;
    height: 14px;
}

.link-icon {
    width: 14px;
    height: 14px;
}

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

.footer-copy {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: var(--space-md);
    font-family: var(--font-mono);
}

.copy-highlight {
    color: var(--text-secondary);
}

.heart-icon {
    width: 14px;
    height: 14px;
    color: var(--pink);
    display: inline;
    vertical-align: middle;
}

.footer-tech {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.tech-badge {
    padding: var(--space-xs) var(--space-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-secondary);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ==================== BACK TO TOP ==================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-secondary);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-normal);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    border-color: var(--terminal-green);
    color: var(--terminal-green);
    box-shadow: 0 0 20px var(--terminal-green-glow);
}

.back-to-top i {
    width: 20px;
    height: 20px;
}

/* ==================== UTILITY CLASSES ==================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

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

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-sm); }
.mb-2 { margin-bottom: var(--space-md); }
.mb-3 { margin-bottom: var(--space-lg); }
.mb-4 { margin-bottom: var(--space-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--space-sm); }
.mt-2 { margin-top: var(--space-md); }
.mt-3 { margin-top: var(--space-lg); }
.mt-4 { margin-top: var(--space-xl); }

.hidden { display: none !important; }
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* ==================== SCROLLBAR ==================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

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

::-webkit-scrollbar-thumb:hover {
    background: var(--text-dim);
}


/* Toast notification */
.toast-notif {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--bg-card);
    border: 1px solid var(--terminal-green);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    z-index: 9999;
    box-shadow: 0 4px 20px rgba(0,0,0,0.4);
    font-size: 0.85rem;
    color: var(--text-primary);
    animation: fadeInUp 0.3s ease;
    max-width: 400px;
}

.toast-action {
    background: var(--terminal-green);
    color: var(--bg-primary);
    border: none;
    padding: 0.3rem 0.75rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.8rem;
    transition: background var(--transition-fast);
}

.toast-action:hover {
    background: var(--terminal-green-dim);
}

.toast-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.2rem;
    line-height: 1;
    padding: 0 0.25rem;
    transition: color var(--transition-fast);
}

.toast-close:hover {
    color: var(--text-primary);
}


/* ==================== RESPONSIVE ==================== */
/* ── Mobile nav drawer (≤1024px) ── */
@media (max-width: 1024px) {

  .nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: 1px solid var(--border-secondary);
    background: transparent;
    cursor: pointer;
    color: var(--text-primary);
    transition: background var(--transition-fast);
  }
  .nav-toggle:hover { background: rgba(0, 212, 255, 0.1); }

  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0; right: 0; bottom: 0;
    z-index: 9998;
    background: rgba(10, 14, 26, 0.99);
    flex-direction: column;
    padding: 8px 0 24px;
    gap: 0;
    overflow-y: auto;
    align-items: stretch;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity var(--transition-normal),
                visibility var(--transition-normal),
                transform var(--transition-normal);
  }

  .nav-links.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav-link {
    width: 100%;
    padding: 11px 20px;
    font-size: 0.9rem;
    border-left: 2px solid transparent;
    border-radius: 0;
    transition: background var(--transition-fast),
                border-color var(--transition-fast);
  }

  .nav-link:hover,
  .nav-link.active {
    background: rgba(0, 212, 255, 0.08);
    border-left-color: var(--cyan);
  }

  .nav-section-label {
    padding: 12px 20px 4px;
    font-size: 0.65rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-muted);
  }

  .nav-dropdown { width: 100%; }
  .nav-dropdown .dropdown-chevron { margin-left: auto; }

  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    background: rgba(0, 0, 0, 0.25);
    border-left: 2px solid var(--border-secondary);
    margin-left: 20px;
    border-radius: 0;
    padding: 4px 0;
    display: none;
  }
  .dropdown-menu.open { display: block; }

  .dropdown-item {
    padding: 9px 20px;
    font-size: 0.85rem;
  }

  .nav-auth {
    margin-top: auto;
    margin-left: 0;
    border-left: none;
    border-top: 1px solid var(--border-secondary);
    padding: 12px 20px;
    flex-direction: column;
    gap: 8px;
    width: 100%;
  }

  .nav-auth-actions {
    display: flex;
    gap: 8px;
    width: 100%;
  }
}

/* ── Mobile fine-tuning (≤768px) ── */
@media (max-width: 768px) {
    .nav-link { padding: 10px 16px; font-size: 0.875rem; }
    .nav-auth  { padding: 10px 16px; }
}

/* ==================== ANIMATIONS ==================== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes glitch {
    0% { transform: translate(0); }
    20% { transform: translate(-2px, 2px); }
    40% { transform: translate(-2px, -2px); }
    60% { transform: translate(2px, 2px); }
    80% { transform: translate(2px, -2px); }
    100% { transform: translate(0); }
}

[data-animate=fadeIn] {
    animation: fadeIn 0.5s ease;
}

[data-animate=fadeInUp] {
    animation: fadeInUp 0.5s ease;
}

/* Selection */
::selection {
    background: var(--terminal-green);
    color: var(--bg-primary);
}
/* Mention autocomplete dropdown */
.mention-dropdown {
    display: none;
    position: fixed;
    z-index: 10000;
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    max-height: 220px;
    overflow-y: auto;
    min-width: 220px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.5);
}
.mention-dropdown.active { display: block; }
.mention-dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    cursor: pointer;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-primary);
    transition: background var(--transition-fast);
}
.mention-dropdown-item:hover,
.mention-dropdown-item.selected {
    background: rgba(0, 255, 65, 0.1);
}
.mention-dropdown-item img {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}
.mention-dropdown-item .mention-name {
    color: var(--text-muted);
    font-size: 0.75rem;
    margin-left: auto;
}

/* ============ Tags ============ */
.topic-tags {
    padding: 0 var(--space-lg) var(--space-md);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}
.tag-badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 20px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition-fast);
}
.tag-badge:hover {
    filter: brightness(1.3);
    transform: translateY(-1px);
}
.tags-selector {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}
.tag-option {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-secondary);
    cursor: pointer;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
    transition: all var(--transition-fast);
    background: var(--bg-elevated);
    user-select: none;
}
.tag-option:hover {
    border-color: var(--tag-color);
    color: var(--tag-color);
}
.tag-option input[type="checkbox"] { display: none; }
.tag-option input[type="checkbox"]:checked + span {
    color: var(--tag-color);
    font-weight: 600;
}
.tag-option:has(input:checked) {
    background: color-mix(in srgb, var(--tag-color) 15%, transparent);
    border-color: var(--tag-color);
}
.topic-list-tags {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
    margin-top: var(--space-xs);
}
.tag-filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-bottom: var(--space-lg);
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-secondary);
    border-radius: var(--radius-lg);
}
.tag-filter-bar .tag-badge.active {
    filter: brightness(1.5);
    box-shadow: 0 0 8px currentColor;
}
.tag-filter-title {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-right: var(--space-sm);
    display: flex;
    align-items: center;
}

.forum-tag-subtitle {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    margin-left: var(--space-sm);
    vertical-align: middle;
}

/* ============ Upload Zone — Reddit Style ============ */
.upload-zone {
    border: 2px dashed var(--border-secondary);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    background: var(--bg-elevated);
    margin-bottom: var(--space-lg);
}
.upload-zone:hover,
.upload-zone-active {
    border-color: var(--terminal-green);
    background: color-mix(in srgb, var(--terminal-green) 5%, var(--bg-elevated));
}
.upload-zone-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    color: var(--text-muted);
    text-align: center;
}
.upload-zone-inner i { color: var(--terminal-green); }
.upload-text { font-size: 0.9rem; color: var(--text-secondary); }
.upload-link { color: var(--terminal-green); text-decoration: underline; cursor: pointer; }
.upload-hint { font-size: 0.75rem; color: var(--text-dim); }
.upload-counter {
    font-size: 0.75rem;
    color: var(--text-dim);
    margin-top: var(--space-xs);
    font-family: var(--font-mono);
}
.upload-counter.upload-counter-warning { color: var(--amber, #f59e0b); }
.upload-counter.upload-counter-full { color: var(--error, #ef4444); }
.upload-progress {
    height: 4px;
    background: var(--bg-hover);
    border-radius: 2px;
    margin-top: var(--space-sm);
    overflow: hidden;
}
.upload-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--terminal-green), var(--cyan));
    width: 0%;
    transition: width 0.3s ease;
    border-radius: 2px;
}
/* Grid de previsualizaciones estilo Reddit */
.upload-preview {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: var(--space-sm);
    margin-top: var(--space-md);
}
.upload-thumb {
    position: relative;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-secondary);
    overflow: hidden;
    background: var(--bg-code);
    aspect-ratio: 1;
    transition: border-color var(--transition-fast);
}
.upload-thumb:hover { border-color: var(--terminal-green); }
.upload-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    cursor: zoom-in;
    transition: transform 0.2s ease;
}
.upload-thumb:hover img { transform: scale(1.03); }
.upload-thumb-file {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    height: 100%;
    padding: var(--space-sm);
    font-size: 0.7rem;
    color: var(--text-muted);
    text-align: center;
    word-break: break-all;
}
.upload-thumb-file i { color: var(--terminal-green); }
.upload-thumb-uploading {
    position: absolute;
    inset: 0;
    background: color-mix(in srgb, var(--bg-primary) 70%, transparent);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
}
.upload-spinner {
    width: 24px;
    height: 24px;
    border: 2px solid var(--border-secondary);
    border-top-color: var(--terminal-green);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}
.upload-thumb-remove {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: rgba(0,0,0,0.65);
    color: #fff;
    border: none;
    cursor: pointer;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3;
    line-height: 1;
    transition: background 0.15s;
    padding: 0;
}
.upload-thumb-remove:hover { background: rgba(220,50,50,0.85); }
.upload-thumb-size {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0,0,0,0.55);
    color: rgba(255,255,255,0.85);
    font-size: 0.6rem;
    font-family: var(--font-mono);
    padding: 2px 5px;
    text-align: center;
}
/* Lightbox */
.upload-lightbox {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(0,0,0,0.88);
    align-items: center;
    justify-content: center;
    cursor: zoom-out;
}
.upload-lightbox.active { display: flex; }
.upload-lightbox img {
    max-width: 90vw;
    max-height: 90vh;
    object-fit: contain;
    border-radius: var(--radius-md);
    box-shadow: 0 8px 32px rgba(0,0,0,0.5);
}
.lb-close {
    position: absolute;
    top: 16px;
    right: 20px;
    color: #fff;
    font-size: 32px;
    cursor: pointer;
    background: none;
    border: none;
    line-height: 1;
    opacity: 0.8;
    z-index: 10;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: opacity 0.2s, background 0.2s;
}
.lb-close:hover { opacity: 1; background: rgba(255,255,255,0.15); }
.lb-prev, .lb-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: #fff;
    font-size: 32px;
    cursor: pointer;
    background: rgba(0,0,0,0.4);
    border: none;
    line-height: 1;
    opacity: 0.7;
    z-index: 10;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: opacity 0.2s, background 0.2s;
    margin: 0 12px;
}
.lb-prev:hover, .lb-next:hover { opacity: 1; background: rgba(0,0,0,0.7); }
.lb-prev { left: 12px; }
.lb-next { right: 12px; }
.lb-counter {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    color: #fff;
    font-size: 14px;
    background: rgba(0,0,0,0.5);
    padding: 4px 12px;
    border-radius: 12px;
    z-index: 10;
    opacity: 0.8;
    pointer-events: none;
    user-select: none;
}
/* Attachment display */
.attachment-image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--space-sm);
    margin: var(--space-sm) 0;
}
.attachment-image-link {
    display: block;
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 1px solid var(--border-secondary);
    transition: border-color var(--transition-fast);
}
.attachment-image-link:hover { border-color: var(--terminal-green); }
.attachment-image {
    width: 100%;
    max-height: 300px;
    object-fit: cover;
    display: block;
    cursor: zoom-in;
    transition: transform 0.2s ease;
}
.attachment-image-link:hover .attachment-image { transform: scale(1.02); }
.attachment-file-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-elevated);
    border: 1px solid var(--border-secondary);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin: var(--space-xs) 0;
    transition: all var(--transition-fast);
    text-decoration: none;
}
.attachment-file-link:hover {
    border-color: var(--terminal-green);
    color: var(--terminal-green);
}
.attachment-size { font-size: 0.75rem; color: var(--text-dim); }

.nav-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    font-size: 0.65rem;
    font-weight: 700;
    background: var(--terminal-green);
    color: var(--bg-primary);
    border-radius: 9px;
    margin-left: var(--space-xs);
    vertical-align: middle;
}

/* ============ Likes ============ */
.like-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 2px 8px;
    border: 1px solid var(--border-secondary);
    border-radius: var(--radius-sm);
    background: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.8rem;
    font-family: var(--font-mono);
    transition: all var(--transition-fast);
}
.like-btn:hover {
    border-color: var(--terminal-green);
    color: var(--terminal-green);
    background: rgba(0, 255, 65, 0.05);
}
.like-btn.liked {
    border-color: var(--terminal-green);
    color: var(--terminal-green);
    background: rgba(0, 255, 65, 0.1);
}
.like-btn.liked i { fill: var(--terminal-green); }
.post-likes { margin-left: auto; }
.reply-like-btn { font-size: 0.75rem; padding: 1px 6px; }
.post-action-like, .post-action-liked { display: none; }

/* ============ Profile Enhancements ============ */
.profile-skills { display: flex; flex-wrap: wrap; gap: var(--space-xs); margin-top: var(--space-md); }
.skill-tag { display: inline-block; padding: 2px 10px; border-radius: var(--radius-sm); font-family: var(--font-mono); font-size: 0.75rem; background: var(--bg-elevated); border: 1px solid var(--border-secondary); color: var(--text-secondary); }
.profile-badges { display: flex; flex-wrap: wrap; gap: var(--space-xs); margin-top: var(--space-sm); align-items: center; }
.badge-icon { display: inline-flex; align-items: center; cursor: help; transition: transform var(--transition-fast); }
.badge-icon:hover { transform: scale(1.2); }
.detail-social { display: flex; gap: var(--space-sm); flex-wrap: wrap; }
.social-link { color: var(--text-muted); transition: all var(--transition-fast); display: inline-flex; align-items: center; }
.social-link:hover { color: var(--terminal-green); transform: translateY(-1px); }
.profile-bio { margin-top: var(--space-sm); color: var(--text-secondary); font-size: 0.9rem; line-height: 1.6; }

/* ============ Nav Dropdown ============ */
.nav-dropdown {
    position: relative;
}
.nav-dropdown:hover .dropdown-menu {
    display: flex;
}
.nav-dropdown .nav-link .dropdown-chevron {
    width: 12px;
    height: 12px;
    margin-left: 2px;
    transition: transform var(--transition-fast);
}
.nav-dropdown:hover .dropdown-chevron {
    transform: rotate(180deg);
}
.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    flex-direction: column;
    min-width: 180px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-secondary);
    border-radius: var(--radius-md);
    padding: var(--space-xs);
    z-index: 1000;
    box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}
.dropdown-menu .dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    white-space: nowrap;
}
.dropdown-menu .dropdown-item:hover {
    background: var(--bg-hover);
    color: var(--terminal-green);
}
.dropdown-menu .dropdown-item.active {
    color: var(--terminal-green);
    background: rgba(0,255,65,0.08);
}

/* Notification delete buttons */
.notif-tl-delete {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    margin-left: 4px;
    opacity: 0.4;
    flex-shrink: 0;
}
.notif-tl-delete:hover {
    background: rgba(255, 51, 102, 0.15);
    color: var(--pink);
    opacity: 1;
}
.notif-item {
    position: relative;
}
.notif-dd-delete {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 2px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    opacity: 0;
    flex-shrink: 0;
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    z-index: 2;
}
.notif-item:hover .notif-dd-delete {
    opacity: 0.6;
}
.notif-dd-delete:hover {
    background: rgba(255, 51, 102, 0.15);
    color: var(--pink);
    opacity: 1 !important;
}