/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
  /* GitHub Dark Dimmed Blue-hued Grays (now as primary) */
  --primary-50: #cdd9e5;
  --primary-100: #adbac7;
  --primary-200: #909dab;
  --primary-300: #768390;
  --primary-400: #636e7b;
  --primary-500: #545d68;
  --primary-600: #444c56;
  --primary-700: #373e47;
  --primary-800: #2d333b;
  --primary-900: #22272e;

  /* GitHub Dark Dimmed ACTUAL colors */
  --gray-50: #cdd9e5;
  --gray-100: #adbac7;
  --gray-200: #909dab;
  --gray-300: #768390;
  --gray-400: #636e7b;
  --gray-500: #545d68;
  --gray-600: #444c56;
  --gray-700: #373e47;
  --gray-800: #2d333b;
  --gray-900: #22272e;

    
    --success-500: #10b981;
    --warning-500: #f59e0b;
    --error-500: #ef4444;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    --transition-fast: 0.15s ease-out;
    --transition-normal: 0.3s ease-out;
    --transition-slow: 0.5s ease-out;
}

html {
    scroll-behavior: smooth;
  font-size: 14px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--gray-50);
    color: #1a1a1a;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Loading Progress Bar */
.loading-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: transparent;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
}

.loading-progress.active {
    opacity: 1;
    visibility: visible;
}

.loading-bar {
    height: 100%;
    background: linear-gradient(90deg, #ef4444, #dc2626, #b91c1c);
    width: 0%;
    transition: width var(--transition-normal);
    position: relative;
    box-shadow: 0 0 10px rgba(239, 68, 68, 0.8), 0 0 20px rgba(239, 68, 68, 0.5);
}

.loading-bar::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 100px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.6), transparent);
    animation: loading-shimmer 1.5s infinite;
}

@keyframes loading-shimmer {
    0% { transform: translateX(-100px); }
    100% { transform: translateX(100px); }
}

/* Page Layout */
.page-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header Styles */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.header.scrolled {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    background: rgba(255, 255, 255, 0.98);
}

.header-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4rem;
}

/* Logo Styles */
.logo-container {
    flex-shrink: 0;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--gray-800);
    font-weight: 600;
    font-size: 1.125rem;
    transition: all var(--transition-fast);
}

.logo-link:hover {
    color: var(--primary-600);
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
}

.logo-icon {
    width: 100%;
    height: 100%;
    color: var(--primary-600);
    transition: all var(--transition-fast);
}

.logo-link:hover .logo-icon {
    color: var(--primary-700);
    transform: rotate(5deg);
}

.logo-text {
    font-weight: 700;
}

/* Desktop Navigation */
.desktop-nav {
    display: none;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

.nav-link {
    position: relative;
    color: var(--gray-600);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.5rem 0;
    transition: all var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-500);
    transition: width var(--transition-normal);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-600);
}

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

/* Mobile Menu Button */
.mobile-menu-button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    background: none;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.mobile-menu-button:hover {
    background: var(--gray-100);
    border-radius: 0.5rem;
}

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

.hamburger-line {
    width: 1.5rem;
    height: 2px;
    background: var(--gray-700);
    transition: all var(--transition-normal);
    transform-origin: center;
}

.mobile-menu-button.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(0.3rem, 0.3rem);
}

.mobile-menu-button.active .hamburger-line:nth-child(2) {
    opacity: 0;
    transform: scale(0);
}

.mobile-menu-button.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(0.3rem, -0.3rem);
}

/* Mobile Navigation */
.mobile-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border-bottom: 1px solid var(--gray-200);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
}

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

.mobile-nav-content {
    padding: 1rem;
}

.mobile-nav-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.mobile-nav-link {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--gray-600);
    text-decoration: none;
    font-weight: 500;
    border-radius: 0.5rem;
    transition: all var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    background: var(--primary-50);
    color: var(--primary-600);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-top: 4rem;
}

/* Hero Section */
.hero-section {
    position: relative;
    min-height: 60vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--primary-50) 0%, var(--primary-100) 50%, var(--gray-50) 100%);
}

.hero-pattern {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 1px 1px, var(--primary-200) 1px, transparent 0);
    background-size: 40px 40px;
    opacity: 0.5;
}

.hero-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 4rem 1rem;
}

.hero-content {
    max-width: 42rem;
    text-align: center;
    margin: 0 auto;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    color: #0a0a0a;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.hero-description {
    font-size: 1.25rem;
    color: #4a4a4a;
    margin-bottom: 2.5rem;
    line-height: 1.7;
    font-weight: 400;
}

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

.primary-button,
.secondary-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    border-radius: 0.75rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    font-size: 1rem;
    position: relative;
    overflow: hidden;
}

.primary-button {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-500));
    color: white;
    box-shadow: var(--shadow-md);
}

.primary-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, var(--primary-700), var(--primary-600));
}

.secondary-button {
    background: white;
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
    box-shadow: var(--shadow-sm);
}

.secondary-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: var(--gray-50);
}

.button-icon {
    width: 1.25rem;
    height: 1.25rem;
    transition: transform var(--transition-fast);
}

.primary-button:hover .button-icon {
    transform: translateX(2px);
}

/* Content Section */
.content-section {
    padding: 4rem 0;
}

.content-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
}

.dynamic-content {
    background: white;
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: all var(--transition-slow);
}

/* Content Animations */
.content-fade-out {
    opacity: 0;
    transform: translateY(20px);
}

.content-fade-in {
    opacity: 1;
    transform: translateY(0);
}

/* Features Section */
.features-section {
    padding: 5rem 0;
    background: white;
}

.features-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
}

.features-header {
    text-align: center;
    margin-bottom: 3rem;
}

.features-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: #0a0a0a;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.features-description {
    font-size: 1.25rem;
    color: #5a5a5a;
    max-width: 42rem;
    margin: 0 auto;
    line-height: 1.6;
}

.features-grid {
    display: grid;
    gap: 2rem;
    grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr));
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-500), var(--primary-400));
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-200);
}

.feature-card:hover::before {
    transform: translateX(0);
}

.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    background: var(--primary-50);
    color: var(--primary-600);
    border-radius: 0.75rem;
    margin-bottom: 1.5rem;
    transition: all var(--transition-normal);
}

.feature-card:hover .feature-icon {
    background: var(--primary-100);
    color: var(--primary-700);
    transform: scale(1.1);
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 0.75rem;
}

.feature-description {
    color: #5a5a5a;
    line-height: 1.7;
    font-size: 1rem;
}

/* Footer */
.footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: 3rem 0 2rem;
}

.footer-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
}

.footer-content {
    display: grid;
    gap: 2rem;
    grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
    margin-bottom: 2rem;
}

.footer-section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: white;
    font-weight: 600;
    font-size: 1.125rem;
}

.footer-logo-text {
    font-weight: 700;
}

.footer-description {
    color: var(--gray-400);
    line-height: 1.6;
}

.footer-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: white;
    margin-bottom: 0.5rem;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-link {
    color: var(--gray-400);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--primary-400);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--gray-800);
    text-align: center;
}

.footer-copyright {
    color: var(--gray-500);
}

/* Tutorial Content Styles */
.tutorial-content {
    padding: 3rem;
}

.tutorial-header {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--gray-200);
}

.tutorial-title {
    font-size: 3rem;
    font-weight: 800;
    color: #0a0a0a;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.tutorial-subtitle {
    font-size: 1.25rem;
    color: #4a4a4a;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.tutorial-meta {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--gray-500);
    font-size: 0.875rem;
}

.meta-icon {
    width: 1rem;
    height: 1rem;
}

.tutorial-section {
    margin-bottom: 3rem;
}

.section-title {
    font-size: 1.875rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 1.5rem;
    letter-spacing: -0.01em;
}

.section-content p {
    color: #3a3a3a;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    font-size: 1.0625rem;
}

.section-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1a1a1a;
    margin: 2rem 0 1rem;
    letter-spacing: -0.01em;
}

.section-content h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #2a2a2a;
    margin: 1.5rem 0 0.75rem;
}

.section-content ul {
    margin: 1.5rem 0;
    padding-left: 1.5rem;
}

.section-content li {
    color: #3a3a3a;
    margin-bottom: 0.5rem;
    line-height: 1.7;
}

.code-block {
    background: #1a1a1a;
    color: #e0e0e0;
    padding: 1.5rem;
    border-radius: 0.75rem;
    margin: 1.5rem 0;
    overflow-x: auto;
    position: relative;
    border: 1px solid #333;
}

.code-block::before {
    content: attr(data-language);
    position: absolute;
    top: 0.75rem;
    right: 4rem;
    color: #888;
    font-size: 0.75rem;
    text-transform: uppercase;
    font-weight: 500;
    letter-spacing: 0.05em;
}

.code-block pre {
    margin: 0;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
    color: #e0e0e0;
}

.code-block .copy-button {
    position: absolute;
    top: 0.75rem;
    right: 1rem;
    background: #2a2a2a;
    border: 1px solid #444;
    color: #e0e0e0;
    padding: 0.4rem 0.75rem;
    border-radius: 0.375rem;
    cursor: pointer;
    font-size: 0.75rem;
    font-weight: 500;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.code-block .copy-button:hover {
    background: #333;
    border-color: #555;
}

.code-block .copy-button.copied {
    background: #10b981;
    border-color: #059669;
    color: white;
}

.code-block .copy-button svg {
    width: 14px;
    height: 14px;
}

/* Syntax Highlighting */
.code-block .token.comment,
.code-block .token.prolog,
.code-block .token.doctype,
.code-block .token.cdata {
    color: #7c7c7c;
    font-style: italic;
}

.code-block .token.punctuation {
    color: #c5c8c6;
}

.code-block .token.property,
.code-block .token.tag,
.code-block .token.boolean,
.code-block .token.number,
.code-block .token.constant,
.code-block .token.symbol,
.code-block .token.deleted {
    color: #f08d49;
}

.code-block .token.selector,
.code-block .token.attr-name,
.code-block .token.string,
.code-block .token.char,
.code-block .token.builtin,
.code-block .token.inserted {
    color: #7ec699;
}

.code-block .token.operator,
.code-block .token.entity,
.code-block .token.url,
.code-block .language-css .token.string,
.code-block .style .token.string {
    color: #67cdcc;
}

.code-block .token.atrule,
.code-block .token.attr-value,
.code-block .token.keyword {
    color: #cc99cd;
}

.code-block .token.function,
.code-block .token.class-name {
    color: #f8c555;
}

.code-block .token.regex,
.code-block .token.important,
.code-block .token.variable {
    color: #de935f;
}

.info-box,
.warning-box,
.tip-box {
    padding: 1.5rem;
    border-radius: 0.75rem;
    margin: 2rem 0;
    border-left: 4px solid;
}

.info-box {
    background: var(--primary-50);
    border-color: var(--primary-500);
    color: var(--primary-900);
}

.warning-box {
    background: #fef3c7;
    border-color: var(--warning-500);
    color: #92400e;
}

.tip-box {
    background: #f0fdf4;
    border-color: var(--success-500);
    color: #166534;
}

.info-box h4,
.warning-box h4,
.tip-box h4 {
    margin: 0 0 0.5rem 0;
    font-weight: 600;
}

/* Responsive Design */
@media (min-width: 768px) {
    .desktop-nav {
        display: block;
    }
    
    .mobile-menu-button {
        display: none;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 2fr 1fr 1fr;
    }
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .header-container {
        padding: 0 2rem;
    }
    
    .hero-container {
        padding: 4rem 2rem;
    }
    
    .content-container {
        padding: 0 2rem;
    }
    
    .features-container {
        padding: 0 2rem;
    }
    
    .footer-container {
        padding: 0 2rem;
    }
}

/* AOS Animation Overrides */
[data-aos] {
    transition-duration: 0.7s;
}

[data-aos="fade-up"] {
    transform: translate3d(0, 30px, 0);
    opacity: 0;
}

[data-aos="fade-up"].aos-animate {
    transform: translate3d(0, 0, 0);
    opacity: 1;
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: 0.5rem;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Skeleton Loaders */
.skeleton-content {
    padding: 3rem;
}

.skeleton-header {
    margin-bottom: 2rem;
}

.skeleton-title {
    height: 3rem;
    width: 60%;
    margin-bottom: 1rem;
}

.skeleton-subtitle {
    height: 1.5rem;
    width: 80%;
    margin-bottom: 1rem;
}

.skeleton-meta {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.skeleton-meta-item {
    height: 1rem;
    width: 100px;
}

.skeleton-section {
    margin-bottom: 2rem;
}

.skeleton-section-title {
    height: 2rem;
    width: 40%;
    margin-bottom: 1rem;
}

.skeleton-paragraph {
    height: 1rem;
    width: 100%;
    margin-bottom: 0.75rem;
}

.skeleton-paragraph:last-child {
    width: 85%;
}

.skeleton-code {
    height: 200px;
    width: 100%;
    margin: 1.5rem 0;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-medium { font-weight: 500; }

.hidden { display: none; }
.visible { display: block; }

.transition-all { transition: all var(--transition-normal); }
.transition-fast { transition: all var(--transition-fast); }
.transition-slow { transition: all var(--transition-slow); }