/* ===== CSS Reset & Base Styles ===== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    /* Colors */
    --color-primary: #00ff88;
    --color-primary-dark: #00cc6a;
    --color-primary-light: #33ff99;
    --color-secondary: #ff6b6b;
    --color-accent: #4ecdc4;

    /* Dark theme colors */
    --color-bg-primary: #0a0a0a;
    --color-bg-secondary: #111111;
    --color-bg-tertiary: #1a1a1a;
    --color-bg-quaternary: #222222;
    --color-text-primary: #ffffff;
    --color-text-secondary: #b0b0b0;
    --color-text-muted: #666666;

    /* Terminal colors */
    --color-terminal-bg: #0d1117;
    --color-terminal-text: #00ff88;
    --color-terminal-prompt: #58a6ff;
    --color-terminal-command: #ffffff;

    /* Borders and shadows */
    --color-border: #333333;
    --color-border-light: #444444;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.6);

    /* Typography */
    --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-family-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', Monaco, monospace;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Layout */
    --container-width: 1200px;
    --content-width: 800px;
    --border-radius: 0.5rem;
    --border-radius-lg: 1rem;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ===== Base Elements ===== */
html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    background-image:
        radial-gradient(circle at 20% 20%, rgba(0, 210, 211, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 107, 107, 0.1) 0%, transparent 50%);
    background-attachment: fixed;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== Typography ===== */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

h5 {
    font-size: 1.125rem;
}

h6 {
    font-size: 1rem;
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-light);
}

code {
    font-family: var(--font-family-mono);
    font-size: 0.875rem;
    background-color: var(--color-bg-tertiary);
    color: var(--color-primary);
    padding: 0.125rem 0.25rem;
    border-radius: 0.25rem;
}

pre {
    font-family: var(--font-family-mono);
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    overflow-x: auto;
    line-height: 1.5;
}

pre code {
    background: none;
    padding: 0;
    color: var(--color-text-primary);
}

blockquote {
    border-left: 4px solid var(--color-primary);
    padding-left: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    font-style: italic;
    color: var(--color-text-secondary);
}

/* ===== Layout Components ===== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
}

/* ===== Header ===== */
.header {
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
}

.nav-brand {
    display: flex;
    align-items: center;
}

.brand-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--color-text-primary);
    text-decoration: none;
}

.brand-icon {
    font-family: var(--font-family-mono);
    font-size: 1.5rem;
    color: var(--color-primary);
}

.brand-text {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--color-text-secondary);
    font-weight: 500;
    text-transform: lowercase;
    transition: color var(--transition-fast);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition-fast);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.nav-toggle-line {
    width: 24px;
    height: 2px;
    background-color: var(--color-text-primary);
    transition: transform var(--transition-fast);
}

@media (max-width: 768px) {
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--color-bg-secondary);
        border-top: 1px solid var(--color-border);
        flex-direction: column;
        padding: var(--spacing-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }

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

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active .nav-toggle-line:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active .nav-toggle-line:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active .nav-toggle-line:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
}

/* ===== Main Content ===== */
.main {
    min-height: calc(100vh - 200px);
    padding: var(--spacing-2xl) 0;
}

/* ===== Hero Section ===== */
.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    margin-bottom: var(--spacing-3xl);
    padding: var(--spacing-3xl) 0;
}

@media (max-width: 968px) {
    .hero {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
        text-align: center;
    }
}

.hero-terminal {
    background: var(--color-terminal-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    order: 2;
}

@media (max-width: 968px) {
    .hero-terminal {
        order: 1;
    }
}

.terminal-header {
    background: var(--color-bg-tertiary);
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    border-bottom: 1px solid var(--color-border);
}

.terminal-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.terminal-dot.red {
    background-color: #ff5f56;
}

.terminal-dot.yellow {
    background-color: #ffbd2e;
}

.terminal-dot.green {
    background-color: #27ca3f;
}

.terminal-title {
    margin-left: auto;
    font-family: var(--font-family-mono);
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.terminal-body {
    padding: var(--spacing-lg);
    font-family: var(--font-family-mono);
    font-size: 0.875rem;
    line-height: 1.8;
}

.terminal-line {
    margin-bottom: var(--spacing-sm);
}

.prompt {
    color: var(--color-terminal-prompt);
    margin-right: var(--spacing-sm);
}

.command {
    color: var(--color-terminal-command);
}

.terminal-output {
    color: var(--color-terminal-text);
    margin-left: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.typing-animation {
    animation: typing 3s steps(20) infinite;
}

.cursor {
    animation: blink 1s infinite;
}

@keyframes typing {

    0%,
    50% {
        width: 0;
    }

    51%,
    100% {
        width: 100%;
    }
}

@keyframes blink {

    0%,
    50% {
        opacity: 1;
    }

    51%,
    100% {
        opacity: 0;
    }
}

.hero-content {
    order: 1;
}

@media (max-width: 968px) {
    .hero-content {
        order: 2;
    }
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-text-primary), var(--color-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.25rem;
    }
}

.hero-description {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xl);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

@media (max-width: 768px) {
    .hero-actions {
        justify-content: center;
    }
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-xl);
    font-weight: 600;
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 2px solid transparent;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-bg-primary);
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    color: var(--color-bg-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    background-color: var(--color-primary);
    color: var(--color-bg-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

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

/* ===== Sections ===== */
.features {
    margin-bottom: var(--spacing-3xl);
}

/* ===== About Page Layout ===== */
.about-single-column {
    max-width: 800px;
    margin: 0 auto;
    margin-top: var(--spacing-xl);
}

/* ===== About Content Sections ===== */
.about-section {
    margin-bottom: var(--spacing-3xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.about-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.section-heading {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-primary);
}

.intro-text {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: rgba(0, 255, 136, 0.1);
    border-left: 4px solid var(--color-primary);
    border-radius: 0 8px 8px 0;
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-lg);
}

.expertise-item {
    background: linear-gradient(145deg, var(--color-bg-secondary), var(--color-bg-tertiary));
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: var(--spacing-xl);
    transition: all 0.3s ease;
}

.expertise-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0, 255, 136, 0.2);
    border-color: var(--color-primary);
}

.expertise-item h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

.expertise-item p {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.philosophy-quote {
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.1), rgba(0, 255, 136, 0.05));
    border-left: 4px solid var(--color-primary);
    padding: var(--spacing-xl);
    margin: var(--spacing-lg) 0;
    border-radius: 0 12px 12px 0;
    font-size: 1.25rem;
    font-style: italic;
    color: var(--color-text-primary);
    position: relative;
}

.philosophy-quote::before {
    content: '"';
    position: absolute;
    top: -10px;
    left: var(--spacing-lg);
    font-size: 4rem;
    color: var(--color-primary);
    opacity: 0.3;
    font-family: serif;
}

.philosophy-list,
.journey-list,
.beyond-list,
.connect-list {
    margin: var(--spacing-lg) 0;
    padding-left: 0;
    list-style: none;
}

.philosophy-list li,
.journey-list li,
.beyond-list li,
.connect-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.02);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.philosophy-list li:hover,
.journey-list li:hover,
.beyond-list li:hover,
.connect-list li:hover {
    background: rgba(0, 255, 136, 0.05);
    transform: translateX(4px);
}

.philosophy-list li::before {
    content: '▸';
    color: var(--color-primary);
    font-weight: bold;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.journey-list li::before {
    content: '•';
    color: var(--color-primary);
    font-weight: bold;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.beyond-list li::before {
    content: '•';
    color: var(--color-primary);
    font-weight: bold;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.connect-list li::before {
    content: '•';
    color: var(--color-primary);
    font-weight: bold;
    font-size: 1.5rem;
    flex-shrink: 0;
}

@media (max-width: 768px) {
    .section-heading {
        font-size: 1.5rem;
    }
    
    .expertise-grid {
        grid-template-columns: 1fr;
    }
    
    .intro-text {
        font-size: 1.125rem;
    }
    
    .about-single-column {
        max-width: 100%;
    }
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: var(--spacing-xl);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.feature-title {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
    font-size: 1.25rem;
    font-weight: 600;
}

.feature-description {
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.feature-link {
    color: var(--color-primary);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.feature-link:hover {
    color: var(--color-primary-light);
}

/* ===== Recent Posts ===== */
.recent-posts {
    margin-bottom: var(--spacing-3xl);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
}

.section-title {
    font-size: 2rem;
    margin: 0;
}

.section-link {
    color: var(--color-primary);
    font-weight: 600;
    text-decoration: none;
}

.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.post-card {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
}

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

.post-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    font-size: 0.875rem;
}

.post-date {
    color: var(--color-text-muted);
}

.post-tags {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.tag {
    background-color: var(--color-bg-tertiary);
    color: var(--color-primary);
    padding: 0.125rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    text-decoration: none;
    transition: background-color var(--transition-fast);
}

.tag:hover {
    background-color: var(--color-primary);
    color: var(--color-bg-primary);
}

.post-title {
    margin: 0 0 var(--spacing-md) 0;
}

.post-title a {
    color: var(--color-text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.post-title a:hover {
    color: var(--color-primary);
}

.post-excerpt {
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-secondary);
}

.post-link {
    color: var(--color-primary);
    font-weight: 600;
    text-decoration: none;
    font-size: 0.875rem;
}

/* ===== CTA Section ===== */
.cta-section {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-3xl);
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.cta-title {
    font-size: 2.25rem;
    margin-bottom: var(--spacing-lg);
}

.cta-description {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== Page Headers ===== */
.page-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    padding: var(--spacing-2xl) 0;
}

.page-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-lg);
}

.page-description {
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ===== Page Content ===== */
.page-content {
    max-width: var(--content-width);
    margin: 0 auto;
}

.content-text {
    margin-bottom: var(--spacing-2xl);
}

/* ===== Post Pages ===== */
.post {
    max-width: var(--content-width);
    margin: 0 auto;
}

.post-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-border);
}

.post-meta {
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.post-reading-time {
    margin-left: var(--spacing-md);
}

.post-content {
    font-size: 1.125rem;
    line-height: 1.8;
}

.post-content h2,
.post-content h3,
.post-content h4,
.post-content h5,
.post-content h6 {
    margin-top: var(--spacing-2xl);
    margin-bottom: var(--spacing-lg);
}

.post-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    margin: var(--spacing-lg) 0;
}

.post-footer {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

@media (max-width: 768px) {
    .post-footer {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
}

/* ===== Post Navigation ===== */
.post-navigation {
    margin-top: var(--spacing-3xl);
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--color-border);
}

.post-nav-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

@media (max-width: 768px) {
    .post-nav-content {
        grid-template-columns: 1fr;
    }
}

.post-nav-item {
    display: flex;
    flex-direction: column;
}

.post-nav-next {
    text-align: right;
}

@media (max-width: 768px) {
    .post-nav-next {
        text-align: left;
    }
}

.post-nav-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
}

.post-nav-link {
    color: var(--color-text-primary);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-fast);
}

.post-nav-link:hover {
    color: var(--color-primary);
}

.back-to-section {
    margin-top: var(--spacing-xl);
    text-align: center;
}

.back-link {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
}

/* ===== Pagination ===== */
.pagination {
    margin-top: var(--spacing-2xl);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
}

.pagination-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-sm);
}

.pagination-link,
.pagination-previous,
.pagination-next {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
    min-width: 40px;
}

.pagination-link:hover,
.pagination-previous:hover,
.pagination-next:hover {
    background-color: var(--color-primary);
    color: var(--color-bg-primary);
    border-color: var(--color-primary);
}

.pagination-link.is-current {
    background-color: var(--color-primary);
    color: var(--color-bg-primary);
    border-color: var(--color-primary);
}

/* ===== Footer ===== */
.footer {
    background-color: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-2xl) 0;
    margin-top: var(--spacing-3xl);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

.footer-copyright,
.footer-tech {
    margin: 0;
}

.footer a {
    color: var(--color-primary);
}

/* ===== Utilities ===== */
.text-center {
    text-align: center;
}

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

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

.mb-0 {
    margin-bottom: 0;
}

.mb-1 {
    margin-bottom: var(--spacing-sm);
}

.mb-2 {
    margin-bottom: var(--spacing-md);
}

.mb-3 {
    margin-bottom: var(--spacing-lg);
}

.mb-4 {
    margin-bottom: var(--spacing-xl);
}

.mt-0 {
    margin-top: 0;
}

.mt-1 {
    margin-top: var(--spacing-sm);
}

.mt-2 {
    margin-top: var(--spacing-md);
}

.mt-3 {
    margin-top: var(--spacing-lg);
}

.mt-4 {
    margin-top: var(--spacing-xl);
}

/* ===== Responsive Design ===== */
@media (max-width: 1200px) {
    :root {
        --container-width: 100%;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-3xl: 2rem;
        --spacing-2xl: 1.5rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .cta-title {
        font-size: 1.75rem;
    }

    .page-title {
        font-size: 2rem;
    }
}

/* ===== Tags Cloud ===== */
.tags-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    justify-content: center;
    margin-top: var(--spacing-xl);
}

.tag-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-sm) var(--spacing-md);
    text-decoration: none;
    transition: all var(--transition-normal);
}

.tag-item:hover {
    background-color: var(--color-primary);
    color: var(--color-bg-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.tag-name {
    color: var(--color-primary);
    font-weight: 600;
}

.tag-item:hover .tag-name {
    color: var(--color-bg-primary);
}

.tag-count {
    background-color: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
    font-size: 0.75rem;
    padding: 0.125rem 0.375rem;
    border-radius: 0.25rem;
}

.tag-item:hover .tag-count {
    background-color: rgba(255, 255, 255, 0.2);
    color: var(--color-bg-primary);
}

/* ===== Contact Page Styles ===== */
.contact-section {
    margin-top: var(--spacing-3xl);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

@media (max-width: 968px) {
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
}

.contact-terminal {
    background-color: var(--color-terminal-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.contact-info {
    margin: var(--spacing-lg) 0;
    font-family: var(--font-family-mono);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    transition: background-color var(--transition-fast);
}

.contact-item:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.contact-icon {
    font-size: 1.5rem;
    min-width: 2rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.contact-details strong {
    color: var(--color-text-primary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.contact-details a {
    color: var(--color-primary);
    text-decoration: none;
    font-family: var(--font-family-mono);
}

.contact-details a:hover {
    color: var(--color-primary-light);
    text-decoration: underline;
}

.help-section {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
}

.help-title {
    margin-bottom: var(--spacing-xl);
    color: var(--color-text-primary);
    font-size: 1.5rem;
}

.help-category {
    margin-bottom: var(--spacing-xl);
}

.help-category h4 {
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
    font-size: 1.125rem;
}

.help-list {
    list-style: none;
    margin-left: var(--spacing-md);
}

.help-list li {
    position: relative;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-secondary);
    padding-left: var(--spacing-lg);
}

.help-list li::before {
    content: "▶";
    position: absolute;
    left: 0;
    color: var(--color-primary);
}

.help-tips {
    background-color: var(--color-bg-tertiary);
    border-left: 4px solid var(--color-primary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    margin-top: var(--spacing-xl);
}

.help-tips h4 {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

.tips-list {
    list-style: none;
    margin-bottom: var(--spacing-lg);
}

.tips-list li {
    position: relative;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-secondary);
    padding-left: var(--spacing-lg);
}

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

.help-footer {
    margin: 0;
    color: var(--color-text-primary);
    font-weight: 600;
    text-align: center;
}

/* ===== Learning Tracks Styles ===== */
.learning-tracks {
    margin: var(--spacing-3xl) 0;
}

.tracks-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.track-section {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.track-section:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.track-header {
    background: linear-gradient(135deg, var(--color-bg-tertiary) 0%, var(--color-bg-secondary) 100%);
    padding: var(--spacing-xl);
    text-align: center;
    border-bottom: 1px solid var(--color-border);
}

.track-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: var(--spacing-md);
}

.track-title {
    margin: 0 0 var(--spacing-sm) 0;
    color: var(--color-text-primary);
    font-size: 1.5rem;
}

.track-subtitle {
    margin: 0;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

.track-content {
    padding: var(--spacing-xl);
}

.course-item {
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    background-color: var(--color-bg-tertiary);
    border-radius: var(--border-radius);
    border-left: 3px solid var(--color-primary);
    transition: background-color var(--transition-fast);
}

.course-item:hover {
    background-color: rgba(0, 210, 211, 0.1);
}

.course-item h4 {
    margin: 0 0 var(--spacing-xs) 0;
    color: var(--color-text-primary);
    font-size: 1rem;
}

.course-item p {
    margin: 0;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

/* ===== Courses Grid ===== */
.courses-list {
    margin: var(--spacing-3xl) 0;
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.course-card {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-normal);
}

.course-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.course-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    display: block;
}

.course-title {
    margin: 0 0 var(--spacing-md) 0;
}

.course-title a {
    color: var(--color-text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.course-title a:hover {
    color: var(--color-primary);
}

.course-description {
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-secondary);
}

.course-link {
    color: var(--color-primary);
    font-weight: 600;
    text-decoration: none;
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

.course-link:hover {
    color: var(--color-primary-light);
}

/* ===== Additional Content Section ===== */
.additional-content {
    margin-top: var(--spacing-3xl);
    padding-top: var(--spacing-3xl);
    border-top: 1px solid var(--color-border);
}

/* ===== Print Styles ===== */
@media print {

    .header,
    .footer,
    .nav,
    .hero-actions,
    .cta-actions,
    .post-navigation,
    .back-to-section {
        display: none;
    }

    body {
        background: white;
        color: black;
    }
}

/* ===== About Page Styles ===== */
.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin: var(--spacing-2xl) 0;
}

.expertise-card {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.expertise-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
    transition: left var(--transition-slow);
}

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

.expertise-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.expertise-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
    display: block;
}

.expertise-card h3 {
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
    font-size: 1.25rem;
}

.expertise-card p {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.skills-section {
    margin: var(--spacing-3xl) 0;
}

.skill-group {
    margin-bottom: var(--spacing-2xl);
}

.skill-group h4 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    font-size: 1.25rem;
    color: var(--color-text-primary);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.skill-tag {
    background-color: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
}

.skill-tag:hover {
    background-color: var(--color-primary);
    color: var(--color-bg-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 210, 211, 0.3);
}

.skill-tag.featured {
    background-color: var(--color-primary);
    color: var(--color-bg-primary);
    font-weight: 600;
}

.skill-tag.featured:hover {
    background-color: var(--color-primary-light);
    transform: scale(1.05);
}

.cta-section {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    align-items: center;
    margin: var(--spacing-3xl) 0;
    flex-wrap: wrap;
}

.primary-cta {
    background-color: var(--color-primary);
    color: var(--color-bg-primary);
    padding: var(--spacing-lg) var(--spacing-2xl);
    border-radius: var(--border-radius-lg);
    font-weight: 600;
    font-size: 1.125rem;
    text-decoration: none;
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.primary-cta:hover {
    background-color: var(--color-primary-dark);
    color: var(--color-bg-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.secondary-cta {
    background-color: transparent;
    color: var(--color-primary);
    padding: var(--spacing-lg) var(--spacing-2xl);
    border: 2px solid var(--color-primary);
    border-radius: var(--border-radius-lg);
    font-weight: 600;
    font-size: 1.125rem;
    text-decoration: none;
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.secondary-cta:hover {
    background-color: var(--color-primary);
    color: var(--color-bg-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* About page responsive adjustments */
@media (max-width: 768px) {
    .expertise-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .expertise-icon {
        font-size: 2.5rem;
    }

    .cta-section {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .primary-cta,
    .secondary-cta {
        padding: var(--spacing-md) var(--spacing-xl);
        font-size: 1rem;
        width: 100%;
        justify-content: center;
    }
}