/* ===== GLOBAL STYLES ===== */
:root {
    /* Cyberpunk color scheme */
    --primary-bg: #0d0e19;
    --secondary-bg: #151828;
    --tertiary-bg: #1c2136;
    --card-bg: #1e243a;
    --neon-blue: #00a6ff;
    --neon-purple: #9d00ff;
    --neon-pink: #ff00e5;
    --neon-cyan: #00f0ff;
    --text-primary: #e2e2e2;
    --text-secondary: #a0a0a0;
    --text-accent: #00f0ff;
    --danger: #ff3860;
    --success: #00d1b2;
    --warning: #ffdd57;
    --info: #209cee;
    
    /* Sizes and spacing */
    --sidebar-width: 250px;
    --sidebar-width-collapsed: 70px;
    --header-height: 70px;
    --border-radius: 8px;
    --card-radius: 12px;
    --transition-speed: 0.3s;
    --transition-function: cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Shadow and Glow effects */
    --box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
    --blue-glow: 0 0 15px rgba(0, 166, 255, 0.5);
    --purple-glow: 0 0 15px rgba(157, 0, 255, 0.5);
    --text-glow: 0 0 10px rgba(0, 240, 255, 0.7);
}

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

body {
    font-family: 'Roboto', sans-serif;
    background-color: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.5;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Orbitron', sans-serif;
    font-weight: 600;
    letter-spacing: 1px;
}

a {
    text-decoration: none;
    color: var(--neon-blue);
    transition: all var(--transition-speed) var(--transition-function);
}

a:hover {
    color: var(--neon-cyan);
    text-shadow: var(--text-glow);
}

button {
    cursor: pointer;
    font-family: 'Orbitron', sans-serif;
    font-weight: 500;
    border: none;
    outline: none;
    background: none;
    transition: all var(--transition-speed) var(--transition-function);
}

input, select, textarea {
    font-family: 'Roboto', sans-serif;
    background-color: var(--tertiary-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border-radius: var(--border-radius);
    padding: 10px 15px;
    width: 100%;
    outline: none;
    transition: all var(--transition-speed) var(--transition-function);
}

input:focus, select:focus, textarea:focus {
    border-color: var(--neon-blue);
    box-shadow: 0 0 0 2px rgba(0, 166, 255, 0.2);
}

::placeholder {
    color: var(--text-secondary);
    opacity: 0.5;
}

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

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

::-webkit-scrollbar-thumb {
    background: var(--tertiary-bg);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--neon-blue);
}

/* ===== BUTTON STYLES ===== */
.btn-primary, .btn-secondary, .btn-danger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border-radius: var(--border-radius);
    font-weight: 500;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all var(--transition-speed) var(--transition-function);
}

.btn-primary {
    background: linear-gradient(90deg, var(--neon-blue), var(--neon-purple));
    color: white;
    border: none;
    box-shadow: var(--blue-glow);
}

.btn-primary:hover, .btn-primary:focus {
    box-shadow: 0 0 20px rgba(0, 166, 255, 0.7);
    transform: translateY(-2px);
}

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

.btn-secondary:hover, .btn-secondary:focus {
    background-color: rgba(0, 166, 255, 0.1);
    box-shadow: var(--blue-glow);
}

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

.btn-danger:hover, .btn-danger:focus {
    background-color: #ff1f4b;
    box-shadow: 0 0 20px rgba(255, 56, 96, 0.7);
}

.btn-start, .btn-resume, .btn-review, .btn-locked {
    padding: 8px 15px;
    border-radius: var(--border-radius);
    font-size: 14px;
    font-weight: 500;
    text-transform: uppercase;
    transition: all var(--transition-speed) var(--transition-function);
}

.btn-start {
    background: linear-gradient(90deg, var(--neon-blue), var(--neon-cyan));
    color: white;
}

.btn-start:hover {
    box-shadow: 0 0 15px rgba(0, 240, 255, 0.6);
    transform: translateY(-2px);
}

.btn-resume {
    background: linear-gradient(90deg, var(--neon-purple), var(--neon-pink));
    color: white;
}

.btn-resume:hover {
    box-shadow: 0 0 15px rgba(157, 0, 255, 0.6);
    transform: translateY(-2px);
}

.btn-review {
    background-color: var(--tertiary-bg);
    color: var(--neon-cyan);
    border: 1px solid var(--neon-cyan);
}

.btn-review:hover {
    background-color: rgba(0, 240, 255, 0.1);
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.4);
}

.btn-locked {
    background-color: var(--tertiary-bg);
    color: var(--text-secondary);
    border: 1px solid rgba(255, 255, 255, 0.2);
    cursor: not-allowed;
}

/* ===== AUTH PAGES (LOGIN/SIGNUP) ===== */
.login-page, .signup-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary-bg);
    position: relative;
    overflow: hidden;
}

.auth-container {
    width: 100%;
    max-width: 480px;
    padding: 20px;
    z-index: 2;
    animation: fadeIn 1s ease-in-out;
}

.auth-card {
    background-color: var(--secondary-bg);
    border-radius: var(--card-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    border: 1px solid rgba(0, 166, 255, 0.1);
}

.auth-header {
    text-align: center;
    padding: 30px 20px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.auth-header h1 {
    font-size: 2.5rem;
    color: var(--text-primary);
    text-transform: uppercase;
    margin-bottom: 5px;
    letter-spacing: 3px;
}

.logo-v {
    color: var(--neon-blue);
    text-shadow: 0 0 10px var(--neon-blue);
}

.auth-header .subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.auth-form {
    padding: 30px;
}

.auth-form h2 {
    margin-bottom: 25px;
    text-align: center;
    font-size: 1.5rem;
    color: var(--text-accent);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    color: var(--text-secondary);
}

.form-group i {
    margin-right: 8px;
    color: var(--neon-blue);
}

.form-error {
    display: block;
    color: var(--danger);
    font-size: 12px;
    margin-top: 5px;
    font-weight: 400;
    min-height: 20px;
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    font-size: 14px;
}

.remember-me {
    display: flex;
    align-items: center;
}

.remember-me input {
    width: auto;
    margin-right: 8px;
}

.forgot-password {
    color: var(--neon-purple);
}

.forgot-password:hover {
    color: var(--neon-pink);
    text-shadow: 0 0 8px rgba(255, 0, 229, 0.5);
}

.auth-form .btn-primary {
    width: 100%;
    padding: 12px;
    margin-bottom: 20px;
}

.auth-redirect {
    text-align: center;
    font-size: 14px;
    color: var(--text-secondary);
}

.auth-redirect a {
    color: var(--neon-purple);
    font-weight: 500;
}

.auth-redirect a:hover {
    color: var(--neon-pink);
    text-shadow: 0 0 8px rgba(255, 0, 229, 0.5);
}

.auth-footer {
    text-align: center;
    padding: 20px 0;
    font-size: 12px;
    color: var(--text-secondary);
    opacity: 0.7;
}

.terms-agreement {
    display: flex;
    align-items: center;
}

.terms-agreement input {
    width: auto;
    margin-right: 8px;
}

.terms-agreement a {
    color: var(--neon-blue);
    margin-left: 5px;
}

/* Cyberpunk Grid Background Animation */
.cyber-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0.3;
}

.grid-line {
    position: absolute;
    background: linear-gradient(90deg, transparent, var(--neon-blue), transparent);
}

.grid-line.horizontal {
    height: 1px;
    width: 100%;
    left: 0;
    animation: horizontalScan 15s linear infinite;
}

.grid-line.horizontal:nth-child(1) {
    top: 33%;
    animation-delay: 0s;
}

.grid-line.horizontal:nth-child(2) {
    top: 66%;
    animation-delay: -5s;
}

.grid-line.horizontal:nth-child(3) {
    top: 15%;
    animation-delay: -10s;
}

.grid-line.vertical {
    width: 1px;
    height: 100%;
    top: 0;
    animation: verticalScan 15s linear infinite;
}

.grid-line.vertical:nth-child(4) {
    left: 33%;
    animation-delay: -2s;
}

.grid-line.vertical:nth-child(5) {
    left: 66%;
    animation-delay: -7s;
}

.grid-line.vertical:nth-child(6) {
    left: 15%;
    animation-delay: -12s;
}

@keyframes horizontalScan {
    0% {
        opacity: 0;
        transform: translateY(-100vh);
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: translateY(100vh);
    }
}

@keyframes verticalScan {
    0% {
        opacity: 0;
        transform: translateX(-100vw);
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: translateX(100vw);
    }
}

/* ===== APP LAYOUT ===== */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar styles */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--secondary-bg);
    border-right: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    top: 0;
    left: 0;
    z-index: 100;
    transition: all var(--transition-speed) var(--transition-function);
    box-shadow: var(--box-shadow);
}

.sidebar-header {
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.sidebar-header h1 {
    font-size: 1.5rem;
    margin: 0;
}

.sidebar-toggle {
    display: none;
    color: var(--text-primary);
    font-size: 1.2rem;
    background: none;
    border: none;
    cursor: pointer;
}

.sidebar-user {
    display: flex;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.user-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--tertiary-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    font-size: 1.8rem;
    color: var(--neon-blue);
}

.user-info h3 {
    font-size: 1rem;
    margin-bottom: 2px;
}

.user-info p {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

.sidebar-nav {
    flex-grow: 1;
    padding: 20px 0;
    overflow-y: auto;
}

.sidebar-nav ul {
    list-style: none;
}

.sidebar-nav li {
    margin-bottom: 5px;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: var(--text-primary);
    border-left: 3px solid transparent;
    transition: all var(--transition-speed) var(--transition-function);
}

.sidebar-nav a i {
    width: 20px;
    margin-right: 15px;
    font-size: 1.1rem;
    text-align: center;
}

.sidebar-nav li.active a {
    background-color: var(--tertiary-bg);
    color: var(--neon-blue);
    border-left-color: var(--neon-blue);
}

.sidebar-nav li:hover a {
    background-color: rgba(0, 166, 255, 0.1);
}

.sidebar-footer {
    padding: 15px 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.sidebar-footer a {
    display: flex;
    align-items: center;
    color: var(--text-secondary);
}

.sidebar-footer a i {
    margin-right: 10px;
    font-size: 1.1rem;
}

.sidebar-footer a:hover {
    color: var(--danger);
}

/* Main content styles */
.main-content {
    flex-grow: 1;
    margin-left: var(--sidebar-width);
    transition: margin var(--transition-speed) var(--transition-function);
}

.content-header {
    height: var(--header-height);
    background-color: var(--tertiary-bg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 30px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.content-header h2 {
    font-size: 1.5rem;
    color: var(--text-accent);
}

.header-actions {
    display: flex;
    align-items: center;
}

.search-bar {
    position: relative;
    margin-right: 20px;
}

.search-bar input {
    padding: 8px 15px 8px 35px;
    width: 250px;
    border-radius: 20px;
    background-color: var(--secondary-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.search-bar button {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 14px;
}

.notification {
    position: relative;
}

.notification-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--secondary-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    font-size: 16px;
    transition: all var(--transition-speed) var(--transition-function);
}

.notification-btn:hover {
    background-color: var(--tertiary-bg);
    transform: translateY(-2px);
}

.badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background-color: var(--danger);
    color: white;
    font-size: 10px;
    font-weight: bold;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.content-body {
    padding: 30px;
    animation: fadeIn 0.5s ease-in-out;
}

/* ===== DASHBOARD STYLES ===== */
.welcome-banner {
    background: linear-gradient(135deg, var(--tertiary-bg), var(--card-bg));
    border-radius: var(--card-radius);
    padding: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    box-shadow: var(--box-shadow);
    border: 1px solid rgba(0, 166, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.welcome-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at top right, rgba(0, 166, 255, 0.2), transparent 70%);
    z-index: 0;
}

.welcome-text {
    z-index: 1;
}

.welcome-text h3 {
    font-size: 1.8rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}

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

.welcome-actions {
    z-index: 1;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background-color: var(--card-bg);
    border-radius: var(--card-radius);
    padding: 20px;
    display: flex;
    flex-direction: column;
    box-shadow: var(--box-shadow);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all var(--transition-speed) var(--transition-function);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--blue-glow);
}

.stat-icon {
    font-size: 2rem;
    color: var(--neon-blue);
    margin-bottom: 15px;
}

.stat-info h4 {
    font-size: 1.1rem;
    margin-bottom: 5px;
    color: var(--text-primary);
}

.stat-info p {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--neon-cyan);
    margin-bottom: 15px;
}

.stat-progress {
    height: 8px;
    background-color: var(--tertiary-bg);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--neon-blue), var(--neon-purple));
    border-radius: 4px;
    transition: width 1s ease-in-out;
}

.dashboard-panels {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.panel {
    background-color: var(--card-bg);
    border-radius: var(--card-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.panel-header h3 {
    font-size: 1.2rem;
    color: var(--text-primary);
}

.panel-link {
    color: var(--neon-blue);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
}

.panel-link i {
    margin-left: 5px;
    transition: transform 0.3s ease;
}

.panel-link:hover i {
    transform: translateX(3px);
}

.panel-body {
    padding: 20px;
}

.lab-list, .achievement-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.lab-item {
    display: flex;
    align-items: center;
    background-color: var(--tertiary-bg);
    border-radius: var(--border-radius);
    padding: 15px;
    transition: all var(--transition-speed) var(--transition-function);
}

.lab-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.lab-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(0, 166, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    font-size: 1.2rem;
    color: var(--neon-blue);
}

.lab-details {
    flex-grow: 1;
}

.lab-details h4 {
    font-size: 1rem;
    margin-bottom: 5px;
}

.lab-details p {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.lab-actions {
    margin-left: 15px;
}

.achievement-item {
    display: flex;
    align-items: center;
    background-color: var(--tertiary-bg);
    border-radius: var(--border-radius);
    padding: 15px;
    transition: all var(--transition-speed) var(--transition-function);
}

.achievement-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.achievement-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(157, 0, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    font-size: 1.2rem;
    color: var(--neon-purple);
}

.achievement-details h4 {
    font-size: 1rem;
    margin-bottom: 5px;
}

.achievement-details p {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* ===== LABS PAGE STYLES ===== */
.labs-filters {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    background-color: var(--tertiary-bg);
    border-radius: var(--card-radius);
    padding: 20px;
}

.filter-group {
    flex-grow: 1;
}

.filter-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    color: var(--text-secondary);
}

.labs-categories {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.category-title {
    margin-bottom: 20px;
    color: var(--text-accent);
    font-size: 1.5rem;
    position: relative;
    display: inline-block;
}

.category-title::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 50px;
    height: 3px;
    background: linear-gradient(90deg, var(--neon-blue), var(--neon-purple));
    border-radius: 3px;
}

.labs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.lab-card {
    background-color: var(--card-bg);
    border-radius: var(--card-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all var(--transition-speed) var(--transition-function);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.lab-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--blue-glow);
}

.lab-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    background-color: rgba(0, 0, 0, 0.2);
}

.lab-badge {
    padding: 5px 10px;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
}

.beginner {
    background-color: rgba(0, 166, 255, 0.2);
    color: var(--neon-blue);
}

.intermediate {
    background-color: rgba(157, 0, 255, 0.2);
    color: var(--neon-purple);
}

.advanced {
    background-color: rgba(255, 0, 229, 0.2);
    color: var(--neon-pink);
}

.expert {
    background-color: rgba(255, 56, 96, 0.2);
    color: var(--danger);
}

.lab-duration {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.lab-content {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.lab-content .lab-icon {
    margin: 0 auto 15px;
    width: 60px;
    height: 60px;
    font-size: 1.8rem;
}

.lab-content h4 {
    text-align: center;
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.lab-content p {
    text-align: center;
    margin-bottom: 20px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    flex-grow: 1;
}

.lab-progress {
    margin-top: auto;
}

.lab-progress .progress-text {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.lab-progress .progress-bar {
    height: 6px;
}

.lab-progress .progress-bar.completed {
    background: linear-gradient(90deg, var(--success), var(--neon-cyan));
}

.lab-footer {
    padding: 15px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: center;
}

.lab-footer button {
    width: 100%;
}

/* ===== PROFILE PAGE STYLES ===== */
.profile-container {
    background-color: var(--card-bg);
    border-radius: var(--card-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.profile-header {
    padding: 30px;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--tertiary-bg), var(--card-bg));
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.profile-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background-color: var(--tertiary-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 30px;
    font-size: 3.5rem;
    color: var(--neon-blue);
    position: relative;
    border: 2px solid var(--neon-blue);
    box-shadow: var(--blue-glow);
}

.edit-avatar-btn {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background-color: var(--neon-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.8rem;
    cursor: pointer;
    box-shadow: var(--blue-glow);
}

.profile-info {
    flex-grow: 1;
}

.profile-info h3 {
    font-size: 1.8rem;
    margin-bottom: 5px;
}

.profile-info p {
    color: var(--text-secondary);
    margin-bottom: 15px;
}

.profile-stats {
    display: flex;
    gap: 30px;
}

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

.stat-value {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--neon-cyan);
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.profile-tabs {
    display: flex;
    background-color: var(--tertiary-bg);
    overflow-x: auto;
    padding: 0 20px;
}

.tab-btn {
    padding: 15px 20px;
    color: var(--text-secondary);
    border-bottom: 3px solid transparent;
    background: none;
    font-size: 0.9rem;
    font-weight: 500;
    white-space: nowrap;
}

.tab-btn.active {
    color: var(--neon-blue);
    border-bottom-color: var(--neon-blue);
}

.tab-btn:hover {
    color: var(--text-primary);
}

.profile-content {
    padding: 30px;
}

.tab-content {
    display: none;
    animation: fadeIn 0.5s ease-in-out;
}

.tab-content.active {
    display: block;
}

.section-title {
    margin-bottom: 20px;
    font-size: 1.2rem;
    color: var(--text-accent);
}

.profile-form {
    max-width: 700px;
}

.form-row {
    display: flex;
    gap: 20px;
}

.form-group.half {
    flex: 1;
}

.form-divider {
    height: 1px;
    background-color: rgba(255, 255, 255, 0.05);
    margin: 30px 0;
}

.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 30px;
}

.checkbox-group {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
    margin-top: 10px;
}

.checkbox-item {
    display: flex;
    align-items: center;
}

.checkbox-item input {
    width: auto;
    margin-right: 10px;
}

.danger-zone {
    margin-top: 50px;
    padding: 20px;
    border: 1px solid var(--danger);
    border-radius: var(--border-radius);
}

.danger-zone h4 {
    color: var(--danger);
    margin-bottom: 10px;
}

.danger-zone p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.danger-actions {
    display: flex;
    justify-content: flex-end;
}

.progress-overview {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 30px;
}

.circular-progress {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: conic-gradient(var(--neon-blue) 24%, var(--tertiary-bg) 0);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.circular-progress::before {
    content: '';
    position: absolute;
    width: 130px;
    height: 130px;
    border-radius: 50%;
    background-color: var(--card-bg);
}

.circular-progress-inner {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

.circular-progress-inner span {
    font-size: 2rem;
    font-weight: 700;
    color: var(--neon-cyan);
}

.progress-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.progress-card {
    text-align: center;
}

.progress-card h4 {
    margin-bottom: 15px;
    color: var(--text-primary);
}

.progress-item {
    background-color: var(--tertiary-bg);
    padding: 15px;
    border-radius: var(--border-radius);
}

.progress-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
}

.progress-header h4 {
    font-size: 1rem;
    color: var(--text-primary);
}

.progress-header span {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}

.achievement-card {
    background-color: var(--tertiary-bg);
    border-radius: var(--card-radius);
    padding: 20px;
    text-align: center;
    transition: all var(--transition-speed) var(--transition-function);
    border: 1px solid rgba(255, 255, 255, 0.05);
    opacity: 0.5;
}

.achievement-card.unlocked {
    opacity: 1;
    border-color: var(--neon-purple);
}

.achievement-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--purple-glow);
}

.achievement-card .achievement-icon {
    margin: 0 auto 15px;
    width: 60px;
    height: 60px;
    font-size: 1.8rem;
}

.achievement-card.unlocked .achievement-icon {
    background-color: rgba(157, 0, 255, 0.2);
    color: var(--neon-purple);
    box-shadow: 0 0 15px rgba(157, 0, 255, 0.3);
}

.achievement-card h4 {
    margin-bottom: 5px;
    font-size: 1rem;
}

.achievement-card p {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

/* ===== ERROR PAGE STYLES ===== */
.error-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary-bg);
    position: relative;
    overflow: hidden;
}

.error-container {
    width: 100%;
    max-width: 800px;
    text-align: center;
    z-index: 2;
    padding: 30px;
    animation: fadeIn 1s ease-in-out;
}

.error-code {
    font-size: 8rem;
    font-family: 'Orbitron', sans-serif;
    font-weight: 900;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 20px;
    color: var(--text-primary);
    position: relative;
}

.error-code-middle {
    position: relative;
    color: var(--neon-blue);
    text-shadow: 0 0 20px var(--neon-blue);
    animation: glitch 2s infinite;
}

.error-title {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--neon-cyan);
    text-shadow: 0 0 10px var(--neon-cyan);
}

.error-message {
    font-size: 1.2rem;
    margin-bottom: 40px;
    color: var(--text-secondary);
}

.error-actions {
    display: flex;
    gap: 20px;
    justify-content: center;
}

.error-grid {
    opacity: 0.5;
}

.glitch-effect {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent 45%, rgba(0, 166, 255, 0.5) 50%, transparent 55%);
    background-size: 300% 300%;
    animation: glitchBackground 5s ease infinite;
}

@keyframes glitch {
    0% {
        transform: translateX(0);
    }
    5% {
        transform: translateX(-2px);
    }
    10% {
        transform: translateX(2px);
    }
    15% {
        transform: translateX(-2px);
    }
    20% {
        transform: translateX(2px);
    }
    25% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(0);
    }
}

@keyframes glitchBackground {
    0% {
        background-position: 0% 0%;
    }
    25% {
        background-position: 100% 100%;
    }
    50% {
        background-position: 100% 0%;
    }
    75% {
        background-position: 0% 100%;
    }
    100% {
        background-position: 0% 0%;
    }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== RESPONSIVE STYLES ===== */
@media (max-width: 1200px) {
    .dashboard-panels {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 992px) {
    :root {
        --sidebar-width: 70px;
    }
    
    .sidebar {
        width: var(--sidebar-width);
    }
    
    .sidebar-header h1 span:not(.logo-v) {
        display: none;
    }
    
    .sidebar-user .user-info {
        display: none;
    }
    
    .sidebar-nav a span {
        display: none;
    }
    
    .sidebar-nav a i {
        margin-right: 0;
        font-size: 1.3rem;
    }
    
    .sidebar-footer a span {
        display: none;
    }
    
    .sidebar.expanded {
        width: var(--sidebar-width-collapsed);
    }
    
    .main-content {
        margin-left: var(--sidebar-width);
    }
    
    .welcome-banner {
        flex-direction: column;
        text-align: center;
    }
    
    .welcome-text {
        margin-bottom: 20px;
    }
    
    .profile-header {
        flex-direction: column;
        text-align: center;
    }
    
    .profile-avatar {
        margin: 0 auto 20px;
    }
    
    .profile-stats {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .progress-overview {
        grid-template-columns: 1fr;
    }
    
    .circular-progress {
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    :root {
        --sidebar-width: 0;
    }
    
    .sidebar {
        transform: translateX(-100%);
        width: 250px;
    }
    
    .sidebar.expanded {
        transform: translateX(0);
        width: 250px;
    }
    
    .sidebar-header h1 span:not(.logo-v) {
        display: inline;
    }
    
    .sidebar-user .user-info {
        display: block;
    }
    
    .sidebar-nav a span {
        display: inline;
    }
    
    .sidebar-nav a i {
        margin-right: 15px;
    }
    
    .sidebar-footer a span {
        display: inline;
    }
    
    .sidebar-toggle {
        display: block;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .content-body {
        padding: 20px;
    }
    
    .content-header {
        padding: 0 20px;
    }
    
    .search-bar {
        display: none;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .labs-filters {
        flex-direction: column;
        gap: 15px;
    }
    
    .form-row {
        flex-direction: column;
    }
    
    .error-code {
        font-size: 5rem;
    }
    
    .error-title {
        font-size: 1.8rem;
    }
    
    .error-message {
        font-size: 1rem;
    }
    
    .error-actions {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .labs-grid {
        grid-template-columns: 1fr;
    }
    
    .achievements-grid {
        grid-template-columns: 1fr;
    }
    
    .checkbox-group {
        grid-template-columns: 1fr;
    }
}