/* Main Styles for Docker Tutorial */
:root {
    --primary-color: #2496ed;
    --secondary-color: #0db7ed;
    --accent-color: #00d4aa;
    --dark-bg: #0a0a0a;
    --card-bg: rgba(255, 255, 255, 0.1);
    --text-light: #ffffff;
    --text-dark: #333333;
    --gradient-primary: linear-gradient(135deg, #2496ed, #0db7ed);
    --gradient-secondary: linear-gradient(135deg, #00d4aa, #2496ed);
    --gradient-dark: linear-gradient(135deg, #0a0a0a, #1a1a1a);
    --shadow-light: 0 8px 32px rgba(0, 0, 0, 0.1);
    --shadow-dark: 0 15px 40px rgba(0, 0, 0, 0.3);
}

/* Preloader */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #0a0a0a, #1a1a1a);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader.fade-out {
    opacity: 0;
    visibility: hidden;
}

.loader {
    text-align: center;
}

.loader-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
}

/* Brand Logo */
.brand-logo {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
}

.logo-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #00d4aa, #2496ed);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: logoPulse 2s ease-in-out infinite;
}

.logo-icon i {
    font-size: 3rem;
    color: white;
    animation: logoRotate 3s linear infinite;
}

.logo-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.brand-name {
    font-family: 'Orbitron', monospace;
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #00d4aa, #2496ed);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: textGlow 2s ease-in-out infinite;
}

.brand-subtitle {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
    margin-top: 5px;
}

/* Loading Animation */
.loading-animation {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.container-animation {
    display: flex;
    gap: 15px;
    align-items: center;
}

.container-box {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #00d4aa, #2496ed);
    border-radius: 8px;
    animation: containerFloat 1.5s ease-in-out infinite;
    position: relative;
    overflow: hidden;
}

.container-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

.container-box:nth-child(1) {
    animation-delay: 0s;
}

.container-box:nth-child(2) {
    animation-delay: 0.2s;
}

.container-box:nth-child(3) {
    animation-delay: 0.4s;
}

.loading-text {
    font-family: 'Orbitron', monospace;
    color: var(--accent-color);
    font-size: 1.1rem;
    font-weight: 500;
    animation: textPulse 1.5s ease-in-out infinite;
}

/* Preloader Animations */
@keyframes logoPulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 0 20px rgba(0, 212, 170, 0.3);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 0 30px rgba(0, 212, 170, 0.5);
    }
}

@keyframes logoRotate {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

@keyframes textGlow {
    0%, 100% {
        filter: drop-shadow(0 0 10px rgba(0, 212, 170, 0.5));
    }
    50% {
        filter: drop-shadow(0 0 20px rgba(0, 212, 170, 0.8));
    }
}

@keyframes containerFloat {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-10px) rotate(5deg);
    }
}

@keyframes shimmer {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}

@keyframes textPulse {
    0%, 100% {
        opacity: 0.7;
    }
    50% {
        opacity: 1;
    }
}

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

body {
    font-family: 'Roboto', sans-serif;
    background: var(--gradient-dark);
    color: var(--text-light);
    overflow-x: hidden;
    position: relative;
}

/* Background Animation */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(36, 150, 237, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(13, 183, 237, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(0, 212, 170, 0.1) 0%, transparent 50%);
    animation: backgroundShift 20s ease-in-out infinite;
    z-index: -1;
}

@keyframes backgroundShift {
    0%, 100% { transform: scale(1) rotate(0deg); }
    50% { transform: scale(1.1) rotate(1deg); }
}

/* Navigation */
.navbar {
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.navbar-brand {
    font-family: 'Orbitron', monospace;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--text-light) !important;
    text-decoration: none;
}

.navbar-brand i {
    color: var(--primary-color);
    margin-right: 10px;
}

.nav-link {
    color: var(--text-light) !important;
    font-weight: 500;
    margin: 0 10px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 100%;
}

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-content {
    z-index: 2;
}

.hero-title {
    font-family: 'Orbitron', monospace;
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientFlow 3s ease-in-out infinite;
}

@keyframes gradientFlow {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-light);
    box-shadow: var(--shadow-light);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-dark);
    background: var(--gradient-secondary);
}

.btn-outline-light {
    background: transparent;
    border: 2px solid var(--text-light);
    color: var(--text-light);
}

.btn-outline-light:hover {
    background: var(--text-light);
    color: var(--dark-bg);
    transform: translateY(-3px);
}

/* Container Animation */
.docker-container {
    position: relative;
    width: 100%;
    height: 400px;
    perspective: 1000px;
}

.container-box {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 200px;
    height: 200px;
    animation: containerFloat 6s ease-in-out infinite;
}

.container-content {
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: var(--text-light);
    box-shadow: var(--shadow-dark);

    animation: containerRotate 10s linear infinite;
}

@keyframes containerFloat {
    0%, 100% { transform: translate(-50%, -50%) translateY(0px); }
    50% { transform: translate(-50%, -50%) translateY(-20px); }
}

@keyframes containerRotate {
    0% { transform: rotateY(0deg) rotateX(0deg); }
    100% { transform: rotateY(360deg) rotateX(360deg); }
}

.floating-elements {
    position: absolute;
    width: 100%;
    height: 100%;
}

.floating-element {
    position: absolute;
    font-size: 2rem;
    color: var(--accent-color);
    animation: float 4s ease-in-out infinite;
}

.floating-element:nth-child(1) {
    top: 20%;
    left: 20%;
    animation-delay: 0s;
}

.floating-element:nth-child(2) {
    top: 60%;
    right: 20%;
    animation-delay: 1s;
}

.floating-element:nth-child(3) {
    bottom: 20%;
    left: 50%;
    animation-delay: 2s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

/* Tutorial Cards */
.tutorials-section {
    padding: 100px 0;
    background: rgba(255, 255, 255, 0.02);
}

.section-header {
    margin-bottom: 60px;
}

.section-header h2 {
    font-family: 'Orbitron', monospace;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-header p {
    font-size: 1.1rem;
    opacity: 0.8;
}

.tutorial-card {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.tutorial-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s;
}

.tutorial-card:hover::before {
    left: 100%;
}

.tutorial-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-dark);
    border-color: var(--primary-color);
}

.card-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2rem;
    color: var(--text-light);
}

.tutorial-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.tutorial-card p {
    opacity: 0.8;
    margin-bottom: 20px;
    line-height: 1.6;
}

.progress {
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 15px;
}

.progress-bar {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 10px;
    transition: width 0.5s ease;
}

.duration {
    font-size: 0.9rem;
    opacity: 0.7;
    font-weight: 500;
}

/* Terminal Section */
.terminal-section {
    padding: 100px 0;
    background: var(--dark-bg);
}

.terminal-container {
    background: rgba(0, 0, 0, 0.9);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-dark);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* About Section */
.about-section {
    padding: 40px 0;
    background: rgba(255, 255, 255, 0.02);
}

.about-content h2 {
    font-family: 'Orbitron', monospace;
    font-size: 2.2rem;
    margin-bottom: 1.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-content p {
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    opacity: 0.9;
}

.features {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.feature {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: var(--card-bg);
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.feature i {
    font-size: 2rem;
    color: var(--primary-color);
    width: 50px;
    text-align: center;
}

.feature h4 {
    font-size: 1.2rem;
    margin-bottom: 5px;
    font-weight: 600;
}

.feature p {
    opacity: 0.8;
    margin: 0;
}

.stats-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.stat-item {
    text-align: center;
    padding: 30px;
    background: var(--card-bg);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-number {
    font-family: 'Orbitron', monospace;
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.8;
    font-weight: 500;
}

/* Footer */
.footer {
    background: rgba(0, 0, 0, 0.9);
    padding: 40px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer h5 {
    font-family: 'Orbitron', monospace;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.footer p {
    opacity: 0.8;
    margin: 0;
}

.contact-info {
    margin-top: 15px;
}

.contact-info p {
    margin: 5px 0;
    font-size: 0.9rem;
}

.contact-info i {
    color: var(--accent-color);
    margin-right: 8px;
    width: 16px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .stats-container {
        grid-template-columns: 1fr;
    }
    
    .tutorial-card {
        margin-bottom: 30px;
    }
    
    .feature {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .about-content h2 {
        font-size: 2rem;
    }
}

/* Tutorial Topics List */
.tutorial-topics {
    margin-bottom: 40px;
    text-align: center;
}

.tutorial-topics h3 {
    color: #00d4aa;
    margin-bottom: 20px;
    font-family: 'Orbitron', monospace;
}

.topic-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-top: 15px;
}

.topic {
    background: linear-gradient(135deg, #1a1a1a, #2a2a2a);
    border: 1px solid #00d4aa;
    border-radius: 20px;
    padding: 8px 16px;
    color: #00d4aa;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.topic:hover {
    background: linear-gradient(135deg, #00d4aa, #00b894);
    color: #0a0a0a;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 212, 170, 0.3);
}

/* Tutorial Stats Container */
.tutorial-stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-top: 40px;
}

.tutorial-stat {
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    background: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 30px;
    text-align: center;
}

.tutorial-stat::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 170, 0.1), transparent);
    transition: left 0.5s ease;
}

.tutorial-stat:hover::before {
    left: 100%;
}

.tutorial-stat:hover {
    transform: translateY(-10px);
    border-color: var(--accent-color);
    box-shadow: 0 15px 40px rgba(0, 212, 170, 0.2);
}

.tutorial-stat .stat-number {
    font-family: 'Orbitron', monospace;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 15px;
    text-shadow: 0 0 20px rgba(0, 212, 170, 0.5);
}

.tutorial-stat .stat-label {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-light);
    margin-bottom: 15px;
    line-height: 1.4;
}

.tutorial-stat .stat-icon {
    margin: 20px 0;
}

.tutorial-stat .stat-icon i {
    font-size: 2.5rem;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

.tutorial-stat:hover .stat-icon i {
    color: var(--accent-color);
    transform: scale(1.1);
}



/* Responsive for tutorial stats */
@media (max-width: 768px) {
    .tutorial-stats-container {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 20px;
    }
    
    .tutorial-stat {
        padding: 25px;
    }
    
    .tutorial-stat .stat-number {
        font-size: 2rem;
    }
    
    .tutorial-stat .stat-label {
        font-size: 1rem;
    }
    
    .tutorial-stat .stat-icon i {
        font-size: 2rem;
    }
}

@media (max-width: 576px) {
    .tutorial-stats-container {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .tutorial-stat {
        padding: 20px;
    }
}

/* Tutorial Modal Styles */
.modal-xl {
    max-width: 100vw;
    width: 100vw;
    height: 100vh;
    margin: 0;
}

.modal-content {
    background: var(--bg-dark);
    border: 1px solid rgba(0, 212, 170, 0.3);
    border-radius: 0;
    height: 100vh;
    width: 100vw;
}

.modal-header {
    border-bottom: 1px solid rgba(0, 212, 170, 0.2);
    background: rgba(0, 0, 0, 0.3);
    border-radius: 0;
    padding: 20px 30px;
}

.modal-header-content {
    display: flex;
    flex-direction: column;
    gap: 15px;
    flex: 1;
}

.modal-header .progress-container {
    margin: 0;
}

.modal-header .progress {
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 8px;
}

.modal-header .progress-bar {
    background: linear-gradient(90deg, var(--accent-color), var(--primary-color));
    transition: width 0.3s ease;
}

.modal-header .progress-text {
    color: #ffffff;
    font-size: 0.85rem;
    font-weight: 500;
}

.modal-title {
    color: var(--accent-color);
    font-family: 'Orbitron', monospace;
    font-weight: 600;
}

.modal-body {
    padding: 0;
    height: calc(100vh - 120px);
    overflow-y: auto;
    width: 100%;
}

/* Tutorial Content Layout */
.tutorial-content {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.tutorial-header {
    margin-bottom: 25px;
}

.progress-container {
    margin-bottom: 20px;
}

.progress {
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-bar {
    background: linear-gradient(90deg, var(--accent-color), var(--primary-color));
    transition: width 0.3s ease;
}

.progress-text {
    color: var(--accent-color);
    font-size: 0.9rem;
    font-weight: 500;
}

.tutorial-step-content {
    flex: 1;
    margin: 0;
    padding: 20px;
    height: calc(100vh - 180px);
    overflow-y: auto;
    text-align: left;
    width: 100%;
}

.tutorial-step-content h3 {
    color: var(--primary-color);
    font-family: 'Orbitron', monospace;
    margin-bottom: 20px;
    font-size: 1.5rem;
    text-align: left;
}

.step-content {
    margin-bottom: 25px;
    text-align: left;
}

.tutorial-step {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 15px;
    padding: 20px;
    border: 1px solid rgba(0, 212, 170, 0.2);
    margin-bottom: 15px;
    text-align: left;
}

.tutorial-step h3 {
    color: var(--accent-color);
    font-size: 1.2rem;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
    text-align: left;
}

.tutorial-step h4 {
    color: var(--primary-color);
    font-size: 1rem;
    margin: 15px 0 8px 0;
    text-align: left;
}

.tutorial-step pre {
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(0, 212, 170, 0.3);
    border-radius: 10px;
    padding: 12px;
    margin: 12px 0;
    overflow-x: auto;
    max-height: 200px;
    overflow-y: auto;
}

.tutorial-step code {
    color: #00d4aa;
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    line-height: 1.3;
}

/* Terminal Section */
.terminal-section {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 15px;
    padding: 15px;
    border: 1px solid rgba(0, 212, 170, 0.2);
    margin: 15px 0;
    text-align: left;
}

.terminal-section h4 {
    color: var(--accent-color);
    margin-bottom: 15px;
    font-size: 1.1rem;
    text-align: left;
}

.terminal-demo {
    background: rgba(0, 0, 0, 0.5);
    border-radius: 10px;
    padding: 15px;
}

.command-block {
    margin-bottom: 10px;
}

.command {
    color: #00d4aa;
    font-family: 'Courier New', monospace;
    font-weight: 600;
    margin-bottom: 5px;
}

.output {
    color: #888;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
}

/* Tutorial Progress Top */
.tutorial-progress-top {
    margin-bottom: 25px;
    padding: 15px 0;
    border-bottom: 1px solid rgba(0, 212, 170, 0.2);
}

.tutorial-progress-top .progress {
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 10px;
}

.tutorial-progress-top .progress-bar {
    background: linear-gradient(90deg, var(--accent-color), var(--primary-color));
    transition: width 0.3s ease;
}

.tutorial-progress-top .progress-text {
    color: var(--accent-color);
    font-size: 0.9rem;
    font-weight: 500;
}

/* Tutorial Terminal Container */
.tutorial-terminal-container {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 15px;
    padding: 15px;
    border: 1px solid rgba(0, 212, 170, 0.2);
    height: fit-content;
    position: sticky;
    top: 20px;
}

.tutorial-terminal-container h6 {
    color: var(--accent-color);
    font-family: 'Orbitron', monospace;
    margin-bottom: 15px;
    text-align: center;
}

.tutorial-terminal-container .terminal-demo {
    background: rgba(0, 0, 0, 0.5);
    border-radius: 10px;
    padding: 12px;
}

.tutorial-terminal-container .command {
    color: #00d4aa;
    font-family: 'Courier New', monospace;
    font-weight: 600;
    margin-bottom: 5px;
    font-size: 0.85rem;
}

.tutorial-terminal-container .output {
    color: #888;
    font-family: 'Courier New', monospace;
    font-size: 0.8rem;
}

/* Tutorial Navigation Bottom */
.tutorial-navigation-bottom {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 15px;
    padding: 20px 0;
    border-top: 1px solid rgba(0, 212, 170, 0.2);
    margin-top: 25px;
}

.tutorial-navigation-bottom .btn {
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.tutorial-navigation-bottom .btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-light);
}

.tutorial-navigation-bottom .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: var(--accent-color);
}

.tutorial-navigation-bottom .btn-primary {
    background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
    border: none;
    color: var(--bg-dark);
}

.tutorial-navigation-bottom .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 212, 170, 0.3);
}

/* Try Command Section */
.try-command-section {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 15px;
    padding: 20px;
    border: 1px solid rgba(0, 212, 170, 0.2);
    height: fit-content;
    position: sticky;
    top: 20px;
}

.try-command-section h4 {
    color: var(--accent-color);
    margin-bottom: 15px;
    font-size: 1.1rem;
    font-weight: 600;
}

.try-command-section .command-demo {
    background: rgba(0, 0, 0, 0.5);
    border-radius: 10px;
    padding: 15px;
}

.try-command-section .command-block {
    margin-bottom: 10px;
}

.try-command-section .command {
    color: #00d4aa;
    font-family: 'Courier New', monospace;
    font-weight: 600;
    margin-bottom: 5px;
    font-size: 0.9rem;
}

.try-command-section .output {
    color: #888;
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
}

/* Installation Tutorial Enhanced Styles */
.why-docker {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin: 20px 0;
}

.problem, .solution {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    padding: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.problem h5 {
    color: #ff6b6b;
}

.solution h5 {
    color: #51cf66;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
    margin: 20px 0;
}

.benefit-card {
    background: rgba(0, 212, 170, 0.1);
    border: 1px solid rgba(0, 212, 170, 0.3);
    border-radius: 10px;
    padding: 15px;
    text-align: center;
    transition: transform 0.3s ease;
}

.benefit-card:hover {
    transform: translateY(-5px);
}

.benefit-card i {
    font-size: 2rem;
    color: var(--accent-color);
    margin-bottom: 10px;
}

.architecture-diagram {
    background: rgba(0, 0, 0, 0.4);
    border-radius: 10px;
    padding: 20px;
    margin: 20px 0;
}

.layer {
    background: rgba(0, 212, 170, 0.1);
    border: 1px solid rgba(0, 212, 170, 0.3);
    border-radius: 8px;
    padding: 15px;
    margin: 10px 0;
    transition: all 0.3s ease;
}

.layer:hover {
    background: rgba(0, 212, 170, 0.2);
    transform: translateX(10px);
}

.layer strong {
    color: var(--accent-color);
    display: block;
    margin-bottom: 5px;
}

.how-docker-works {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin: 20px 0;
}

.step {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    padding: 20px;
    text-align: center;
    position: relative;
}

.step-number {
    background: var(--accent-color);
    color: #000;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin: 0 auto 15px;
}

.use-cases {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin: 20px 0;
}

.use-case {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    padding: 20px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.use-case i {
    font-size: 2rem;
    color: var(--accent-color);
    margin-bottom: 10px;
}

.desktop-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
    margin: 20px 0;
}

.feature {
    background: rgba(0, 212, 170, 0.1);
    border: 1px solid rgba(0, 212, 170, 0.3);
    border-radius: 10px;
    padding: 20px;
    text-align: center;
}

.feature i {
    font-size: 2rem;
    color: var(--accent-color);
    margin-bottom: 10px;
}

.requirements {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    padding: 20px;
    margin: 20px 0;
}

.req-item {
    display: flex;
    align-items: center;
    margin: 10px 0;
    padding: 10px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 5px;
}

.req-item i {
    color: var(--accent-color);
    margin-right: 10px;
    width: 20px;
}

.gui-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

.gui-section {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    padding: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.gui-section h5 {
    color: var(--accent-color);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
}

.gui-section h5 i {
    margin-right: 10px;
}

.gui-section ul {
    list-style: none;
    padding: 0;
}

.gui-section li {
    padding: 5px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.gui-section li:last-child {
    border-bottom: none;
}

.troubleshooting {
    background: rgba(255, 107, 107, 0.1);
    border: 1px solid rgba(255, 107, 107, 0.3);
    border-radius: 10px;
    padding: 20px;
    margin: 20px 0;
}

.issue {
    margin: 15px 0;
    padding: 15px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 8px;
}

.issue h5 {
    color: #ff6b6b;
    margin-bottom: 10px;
}

.issue ul {
    margin: 10px 0;
    padding-left: 20px;
}

.issue code {
    background: rgba(0, 0, 0, 0.5);
    padding: 2px 6px;
    border-radius: 3px;
    color: #00d4aa;
}

/* Professional Installation Styles */
.full-width {
    width: 100% !important;
    max-width: none !important;
    margin: 0 !important;
    padding: 0 !important;
}

.tutorial-content {
    width: 100%;
    max-width: 100%;
    margin: 0;
    padding: 0;
}

.tutorial-step-content {
    width: 100%;
    max-width: 100%;
    margin: 0;
    padding: 0;
}

.step-content {
    width: 100%;
    max-width: 100%;
    margin: 0;
    padding: 0;
}

.tutorial-step {
    width: 100%;
    max-width: 100%;
    margin: 0;
    padding: 0;
}

.installation-overview {
    background: rgba(0, 212, 170, 0.1);
    border: 1px solid rgba(0, 212, 170, 0.3);
    border-radius: 15px;
    padding: 25px;
    margin: 20px 0;
}

.overview-card h4 {
    color: var(--accent-color);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
}

.overview-card h4 i {
    margin-right: 10px;
}

.installation-methods {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    margin: 25px 0;
}

.method-card {
    background: rgba(0, 0, 0, 0.4);
    border-radius: 15px;
    padding: 25px;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.method-card.cli {
    border-color: rgba(0, 212, 170, 0.5);
}

.method-card.gui {
    border-color: rgba(255, 193, 7, 0.5);
}

.method-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.method-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.method-header i {
    font-size: 2rem;
    margin-right: 15px;
}

.method-card.cli .method-header i {
    color: var(--accent-color);
}

.method-card.gui .method-header i {
    color: #ffc107;
}

.method-header h5 {
    font-size: 1.3rem;
    margin: 0;
    color: #fff;
}

.method-content h6 {
    color: var(--accent-color);
    margin: 15px 0 10px;
    font-size: 1.1rem;
}

.method-content ul {
    list-style: none;
    padding: 0;
}

.method-content li {
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    position: relative;
    padding-left: 20px;
}

.method-content li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

.download-methods {
    margin: 25px 0;
}

.os-section {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 15px;
    padding: 25px;
    margin: 20px 0;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.os-section h5 {
    color: var(--accent-color);
    font-size: 1.4rem;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
}

.os-section h5 i {
    margin-right: 10px;
    font-size: 1.6rem;
}

.download-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 20px;
}

.download-option {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    padding: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.download-option:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-3px);
}

.download-option h6 {
    color: #fff;
    font-size: 1.2rem;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
}

.download-option h6 i {
    margin-right: 10px;
    color: var(--accent-color);
}

.download-details p {
    margin: 8px 0;
    font-size: 0.95rem;
}

.download-details strong {
    color: var(--accent-color);
}

.download-details a {
    color: #00d4aa;
    text-decoration: none;
    border-bottom: 1px solid #00d4aa;
}

.download-details a:hover {
    color: #fff;
    border-bottom-color: #fff;
}

.download-details code {
    background: rgba(0, 0, 0, 0.5);
    padding: 3px 8px;
    border-radius: 4px;
    color: #00d4aa;
    font-family: 'Courier New', monospace;
}

.installation-workflow {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin: 25px 0;
}

.workflow-step {
    background: rgba(0, 0, 0, 0.4);
    border-radius: 15px;
    padding: 25px;
    text-align: center;
    border: 1px solid rgba(0, 212, 170, 0.3);
    position: relative;
    transition: all 0.3s ease;
}

.workflow-step:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
}

.workflow-step .step-number {
    background: var(--accent-color);
    color: #000;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.2rem;
    margin: 0 auto 20px;
}

.workflow-step h5 {
    color: var(--accent-color);
    font-size: 1.2rem;
    margin-bottom: 15px;
}

.workflow-step ul {
    list-style: none;
    padding: 0;
    text-align: left;
}

.workflow-step li {
    padding: 5px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    padding-left: 20px;
}

.workflow-step li:before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--accent-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .installation-methods {
        grid-template-columns: 1fr;
    }
    
    .download-options {
        grid-template-columns: 1fr;
    }
    
    .installation-workflow {
        grid-template-columns: 1fr;
    }
}

/* Section Divider */
.section-divider {
    border: none;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-color), transparent);
    margin: 40px 0;
    border-radius: 1px;
}

/* Tutorial Navigation */
.tutorial-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
    border-top: 1px solid rgba(0, 212, 170, 0.2);
    margin-top: auto;
    position: sticky;
    bottom: 0;
    background: var(--bg-dark);
    z-index: 10;
}

.tutorial-navigation .btn {
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.tutorial-navigation .btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-light);
}

.tutorial-navigation .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: var(--accent-color);
}

.tutorial-navigation .btn-primary {
    background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
    border: none;
    color: var(--bg-dark);
}

.tutorial-navigation .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 212, 170, 0.3);
}

/* Tutorial Container */
.tutorial-container {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 15px;
    padding: 15px;
    border: 1px solid rgba(0, 212, 170, 0.2);
    position: sticky;
    top: 20px;
    height: fit-content;
}

.tutorial-container h6 {
    color: var(--accent-color);
    font-family: 'Orbitron', monospace;
    margin-bottom: 15px;
    text-align: center;
}

.tutorial-canvas {
    width: 100%;
    height: 250px;
    border-radius: 10px;
    overflow: hidden;
    background: linear-gradient(135deg, #0a0a0a, #1a1a1a);
    border: 1px solid rgba(0, 212, 170, 0.3);
}

/* Desktop Optimizations */
@media (min-width: 992px) {
    .modal-xl {
        max-width: 100vw;
        width: 100vw;
        height: 100vh;
    }
    
    .modal-body {
        padding: 0;
        height: calc(100vh - 120px);
    }
    
    .tutorial-step-content {
        height: calc(100vh - 180px);
    }
    
    .tutorial-step {
        padding: 18px;
        margin-bottom: 12px;
    }
    
    .tutorial-step pre {
        max-height: 180px;
        padding: 10px;
    }
    
    .tutorial-step code {
        font-size: 0.8rem;
    }
    
    .terminal-section {
        padding: 12px;
        margin: 12px 0;
    }
    
    .tutorial-canvas {
        height: 280px;
    }
    
    /* About Section Desktop Optimizations */
    .about-section {
        padding: 30px 0;
    }
    
    .about-content h2 {
        font-size: 2rem;
        margin-bottom: 1rem;
    }
    
    .about-content p {
        font-size: 0.95rem;
        line-height: 1.5;
        margin-bottom: 1rem;
    }
    
    .features {
        gap: 12px;
    }
    
    .feature {
        padding: 12px;
        gap: 12px;
    }
    
    /* About Stats */
    .about-stats {
        padding: 20px;
    }
    
    .stats-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .stat-card {
        background: var(--card-bg);
        border-radius: 15px;
        padding: 20px;
        text-align: center;
        border: 1px solid rgba(0, 212, 170, 0.2);
        transition: all 0.3s ease;
    }
    
    .stat-card:hover {
        transform: translateY(-5px);
        border-color: var(--accent-color);
        box-shadow: 0 10px 25px rgba(0, 212, 170, 0.2);
    }
    
    .stat-icon {
        font-size: 2rem;
        color: var(--accent-color);
        margin-bottom: 10px;
    }
    
    .stat-number {
        font-family: 'Orbitron', monospace;
        font-size: 2rem;
        font-weight: 700;
        color: var(--primary-color);
        margin-bottom: 5px;
    }
    
    .stat-label {
        font-size: 0.9rem;
        color: var(--text-muted);
        font-weight: 500;
    }
}

/* Why Choose Section */
.why-choose-section {
    padding: 60px 0;
    background: rgba(0, 0, 0, 0.3);
}

.choose-card {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    height: 100%;
    margin-bottom: 30px;
}

.choose-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent-color);
    box-shadow: 0 15px 40px rgba(0, 212, 170, 0.2);
}

.choose-card .card-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    transition: all 0.3s ease;
}

.choose-card:hover .card-icon {
    transform: scale(1.1);
}

.choose-card .card-icon i {
    font-size: 2rem;
    color: white;
}

.choose-card h4 {
    color: var(--primary-color);
    font-size: 1.3rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.choose-card p {
    color: var(--text-muted);
    line-height: 1.6;
    margin: 0;
}

/* Success Section */
.success-section {
    padding: 60px 0;
    background: linear-gradient(135deg, rgba(0, 212, 170, 0.05), rgba(36, 150, 237, 0.05));
}

.success-content h2 {
    font-family: 'Orbitron', monospace;
    font-size: 2.2rem;
    margin-bottom: 1.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.success-content p {
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 2rem;
    color: var(--text-light);
}

.success-features {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.success-feature {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: rgba(0, 212, 170, 0.1);
    border-radius: 10px;
    border: 1px solid rgba(0, 212, 170, 0.2);
}

.success-feature i {
    color: var(--accent-color);
    font-size: 1.2rem;
}

.success-feature span {
    color: var(--text-light);
    font-weight: 500;
}

.achievement-cards {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.achievement-card {
    background: var(--card-bg);
    border-radius: 15px;
    padding: 25px;
    text-align: center;
    border: 1px solid rgba(0, 212, 170, 0.2);
    transition: all 0.3s ease;
}

.achievement-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
    box-shadow: 0 10px 25px rgba(0, 212, 170, 0.2);
}

.achievement-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
}

.achievement-icon i {
    font-size: 1.5rem;
    color: white;
}

.achievement-card h4 {
    color: var(--primary-color);
    font-size: 1.2rem;
    margin-bottom: 10px;
    font-weight: 600;
}

.achievement-card p {
    color: var(--text-muted);
    margin: 0;
    font-size: 0.9rem;
}

/* Responsive Design for new sections */
@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .choose-card {
        padding: 20px;
        margin-bottom: 20px;
    }
    
    .success-content h2 {
        font-size: 1.8rem;
    }
    
    .achievement-cards {
        margin-top: 30px;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .modal-body {
        padding: 20px;
    }
    
    .tutorial-container {
        margin-top: 20px;
        position: static;
    }
    
    .tutorial-navigation {
        flex-direction: column;
        gap: 15px;
    }
    
    .tutorial-navigation .btn {
        width: 100%;
    }
}