/* ===================================
   YASAR ARAFATH - PORTFOLIO
   Design: Dark Mode + Centered Layout
   Typography: Modern Sans-serif (Inter)
   Animation: Fade-ins + Hover Scaling
   Background: Geometric Pattern
   =================================== */

/* CSS Variables */
:root {
    /* Dark Mode Color Scheme */
    --color-bg-primary: #0a0a0b;
    --color-bg-secondary: #111113;
    --color-bg-tertiary: #18181b;
    --color-bg-card: #1c1c1f;

    --color-text-primary: #fafafa;
    --color-text-secondary: #a1a1aa;
    --color-text-muted: #71717a;

    --color-accent: #06b6d4;
    --color-accent-hover: #22d3ee;
    --color-accent-subtle: rgba(6, 182, 212, 0.1);

    --color-border: #27272a;
    --color-border-hover: #3f3f46;

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

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -2px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -4px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(6, 182, 212, 0.3);
}

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

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

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

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

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

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

a:hover {
    color: var(--color-accent-hover);
}

/* ===================================
   NAVIGATION
   =================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 11, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--color-accent);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
}

.nav-logo:hover {
    background: var(--color-accent);
    color: var(--color-bg-primary);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
}

.nav-link {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    padding: var(--spacing-sm) 0;
    position: relative;
    transition: color var(--transition-fast);
}

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

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

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

/* Mobile Navigation Toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    position: relative;
    transition: background var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    transition: transform var(--transition-base);
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    top: 8px;
}

/* ===================================
   HERO SECTION
   =================================== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-lg);
    position: relative;
    overflow: hidden;
}

/* Geometric Background Pattern */
.hero-bg-pattern {
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 25% 25%, rgba(6, 182, 212, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(6, 182, 212, 0.03) 0%, transparent 50%),
        linear-gradient(rgba(6, 182, 212, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(6, 182, 212, 0.02) 1px, transparent 1px);
    background-size: 100% 100%, 100% 100%, 50px 50px, 50px 50px;
    opacity: 0.8;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-greeting {
    font-size: 1rem;
    color: var(--color-accent);
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
}

.hero-name {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-title {
    font-size: clamp(1.25rem, 4vw, 1.75rem);
    color: var(--color-text-secondary);
    font-weight: 500;
    margin-bottom: var(--spacing-lg);
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
    line-height: 1.7;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
}

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

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

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

.btn-secondary:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    transform: translateY(-2px);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-muted);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-right: 2px solid var(--color-text-muted);
    border-bottom: 2px solid var(--color-text-muted);
    transform: rotate(45deg);
    animation: scrollBounce 2s infinite;
}

@keyframes scrollBounce {
    0%, 20%, 50%, 80%, 100% {
        transform: rotate(45deg) translateY(0);
    }
    40% {
        transform: rotate(45deg) translateY(6px);
    }
    60% {
        transform: rotate(45deg) translateY(3px);
    }
}

/* ===================================
   SECTIONS (Common)
   =================================== */
.section {
    padding: var(--spacing-3xl) 0;
}

.section-title {
    font-size: clamp(1.75rem, 5vw, 2.25rem);
    text-align: center;
    margin-bottom: var(--spacing-md);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--color-accent);
    margin: var(--spacing-md) auto 0;
    border-radius: var(--radius-sm);
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto var(--spacing-2xl);
}

/* ===================================
   ABOUT SECTION
   =================================== */
.about {
    background: var(--color-bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    max-width: 900px;
    margin: 0 auto;
}

.about-text p {
    margin-bottom: var(--spacing-md);
    font-size: 1.0625rem;
    line-height: 1.8;
}

.about-text strong {
    color: var(--color-accent);
}

.about-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2xl);
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    min-width: 140px;
    transition: all var(--transition-base);
}

.stat-item:hover {
    transform: translateY(-4px);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-glow);
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: var(--spacing-sm);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ===================================
   PROJECTS SECTION
   =================================== */
.projects {
    background: var(--color-bg-primary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.project-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), transparent);
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

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

.project-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-subtle);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    color: var(--color-accent);
}

.project-icon svg {
    width: 24px;
    height: 24px;
}

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

.project-description {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

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

.project-tech li {
    font-size: 0.75rem;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-bg-tertiary);
    color: var(--color-accent);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
}

/* ===================================
   SKILLS SECTION
   =================================== */
.skills {
    background: var(--color-bg-secondary);
}

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

.skill-category {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

.skill-category:hover {
    border-color: var(--color-border-hover);
}

.skill-category-title {
    font-size: 1rem;
    color: var(--color-accent);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

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

.skill-tag {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-card);
    color: var(--color-text-secondary);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.skill-tag:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    transform: scale(1.05);
}

/* ===================================
   CONTACT SECTION
   =================================== */
.contact {
    background: var(--color-bg-primary);
}

.contact-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    color: var(--color-text-primary);
    text-decoration: none;
}

.contact-item:hover {
    border-color: var(--color-accent);
    transform: translateX(8px);
    color: var(--color-text-primary);
}

.contact-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-subtle);
    border-radius: var(--radius-md);
    color: var(--color-accent);
    flex-shrink: 0;
}

.contact-icon svg {
    width: 22px;
    height: 22px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.contact-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.contact-value {
    font-size: 1rem;
    color: var(--color-text-secondary);
}

.contact-item:hover .contact-value {
    color: var(--color-accent);
}

.contact-location {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.contact-location svg {
    width: 16px;
    height: 16px;
}

/* ===================================
   FOOTER
   =================================== */
.footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.footer p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* ===================================
   ANIMATIONS
   =================================== */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }

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

/* Scroll Reveal Animation Class */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */

/* Tablet */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--color-bg-secondary);
        flex-direction: column;
        align-items: center;
        padding: var(--spacing-xl);
        gap: var(--spacing-lg);
        border-bottom: 1px solid var(--color-border);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }

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

    .nav-toggle {
        display: block;
    }

    .nav-toggle.active .hamburger {
        background: transparent;
    }

    .nav-toggle.active .hamburger::before {
        transform: rotate(45deg) translate(5px, 6px);
    }

    .nav-toggle.active .hamburger::after {
        transform: rotate(-45deg) translate(5px, -6px);
    }

    .hero {
        padding-top: 100px;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 280px;
    }

    .about-stats {
        gap: var(--spacing-md);
    }

    .stat-item {
        min-width: 100px;
        padding: var(--spacing-md);
    }

    .stat-number {
        font-size: 2rem;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }

    .skills-container {
        grid-template-columns: 1fr;
    }

    .contact-item {
        padding: var(--spacing-md);
    }
}

/* Mobile */
@media (max-width: 480px) {
    html {
        font-size: 14px;
    }

    .container {
        padding: 0 var(--spacing-md);
    }

    .section {
        padding: var(--spacing-2xl) 0;
    }

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

    .hero-subtitle {
        font-size: 1rem;
    }

    .about-stats {
        flex-direction: column;
        align-items: center;
    }

    .stat-item {
        width: 100%;
        max-width: 200px;
    }

    .project-card {
        padding: var(--spacing-lg);
    }

    .skill-category {
        padding: var(--spacing-lg);
    }
}

/* Prefers Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }

    .scroll-arrow {
        animation: none;
    }
}

/* Focus Styles for Accessibility */
:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Selection Styles */
::selection {
    background: var(--color-accent);
    color: var(--color-bg-primary);
}

/* ===================================
   BLOG PAGE STYLES
   =================================== */

/* Blog Header */
.blog-header {
    padding: calc(64px + var(--spacing-3xl)) var(--spacing-lg) var(--spacing-3xl);
    text-align: center;
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
}

.blog-header-title {
    font-size: clamp(2rem, 6vw, 3rem);
    margin-bottom: var(--spacing-md);
}

.blog-header-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* Blog Filters */
.blog-filters {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg-primary);
    position: sticky;
    top: 64px;
    z-index: 100;
    border-bottom: 1px solid var(--color-border);
}

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

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--color-bg-card);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
}

.filter-btn:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.filter-btn.active {
    background: var(--color-accent);
    color: var(--color-bg-primary);
    border-color: var(--color-accent);
}

/* Blog Posts Section */
.blog-posts {
    background: var(--color-bg-primary);
}

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

/* Blog Card */
.blog-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
    position: relative;
    display: flex;
    flex-direction: column;
}

.blog-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), transparent);
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

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

/* Blog Card Header */
.blog-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.blog-category {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-accent-subtle);
    color: var(--color-accent);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.blog-meta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.blog-date,
.blog-reading-time {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.blog-date svg,
.blog-reading-time svg {
    width: 14px;
    height: 14px;
}

/* Blog Card Content */
.blog-card-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
    line-height: 1.4;
}

.blog-card-excerpt {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
    flex-grow: 1;
}

/* Blog Card Footer */
.blog-card-footer {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-top: auto;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.blog-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.blog-author-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-accent-subtle);
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1rem;
    flex-shrink: 0;
}

.blog-author-info {
    display: flex;
    flex-direction: column;
}

.blog-author-name {
    font-size: 0.875rem;
    color: var(--color-text-primary);
    font-weight: 600;
}

.blog-author-role {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

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

.blog-tag {
    font-size: 0.75rem;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-bg-tertiary);
    color: var(--color-text-muted);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
}

.blog-card:hover .blog-tag {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

/* Blog Card Link */
.blog-card-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-accent);
    font-size: 0.875rem;
    font-weight: 600;
    margin-top: var(--spacing-md);
    transition: all var(--transition-base);
}

.blog-card-link svg {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-base);
}

.blog-card:hover .blog-card-link svg {
    transform: translateX(4px);
}

/* Loading State */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3xl);
    color: var(--color-text-muted);
    grid-column: 1 / -1;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-md);
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Empty State */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3xl);
    color: var(--color-text-muted);
    text-align: center;
    grid-column: 1 / -1;
}

.empty-state svg {
    width: 64px;
    height: 64px;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-lg);
}

.empty-state h3 {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.error-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--spacing-3xl);
    color: #ef4444;
}

/* Blog Modal */
.blog-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.blog-modal.active {
    opacity: 1;
}

.blog-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(4px);
}

.blog-modal-content {
    position: relative;
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow-y: auto;
    z-index: 1;
    transform: translateY(20px);
    transition: transform var(--transition-base);
}

.blog-modal.active .blog-modal-content {
    transform: translateY(0);
}

.blog-modal-close {
    position: sticky;
    top: var(--spacing-lg);
    left: 100%;
    margin-left: calc(100% - var(--spacing-lg) - 40px);
    width: 40px;
    height: 40px;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    transition: all var(--transition-base);
}

.blog-modal-close:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
    transform: rotate(90deg);
}

.blog-modal-close svg {
    width: 20px;
    height: 20px;
    color: var(--color-text-primary);
}

.blog-post-full {
    padding: var(--spacing-3xl);
}

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

.blog-post-title {
    font-size: clamp(1.75rem, 5vw, 2.5rem);
    margin: var(--spacing-md) 0 var(--spacing-lg);
    line-height: 1.3;
}

.blog-post-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.blog-meta-details {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.blog-post-content {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
}

.blog-post-content p {
    margin-bottom: var(--spacing-lg);
}

.blog-post-content p:last-child {
    margin-bottom: 0;
}

.blog-post-content strong {
    color: var(--color-text-primary);
    font-weight: 600;
}

.blog-card-link {
    background: none;
    border: none;
    cursor: pointer;
    font-family: var(--font-primary);
}

/* Blog Page Responsive */
@media (max-width: 768px) {
    .blog-header {
        padding: calc(64px + var(--spacing-2xl)) var(--spacing-lg) var(--spacing-2xl);
    }

    .blog-grid {
        grid-template-columns: 1fr;
    }

    .filter-buttons {
        gap: var(--spacing-sm);
    }

    .filter-btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.8125rem;
    }

    .blog-post-full {
        padding: var(--spacing-2xl) var(--spacing-lg);
    }

    .blog-post-meta {
        flex-direction: column;
        align-items: flex-start;
    }

    .blog-modal-content {
        width: 95%;
        max-height: 95vh;
    }
}

@media (max-width: 480px) {
    .blog-card {
        padding: var(--spacing-lg);
    }

    .blog-card-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .blog-meta {
        gap: var(--spacing-sm);
    }

    .blog-post-full {
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .blog-modal-close {
        margin-left: calc(100% - var(--spacing-md) - 36px);
        width: 36px;
        height: 36px;
    }
}

/* ===================================
   CONTACT FORM STYLES
   =================================== */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    max-width: 1000px;
    margin: 0 auto;
}

.contact-form-container {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
}

.form-title {
    font-size: 1.25rem;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

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

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

.form-label {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    font-weight: 500;
}

.form-input,
.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form textarea {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--color-bg-tertiary) !important;
    background-color: #18181b !important;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary) !important;
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: all var(--transition-base);
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

.form-input::placeholder,
.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: var(--color-text-muted) !important;
    opacity: 1;
}

/* Autofill override for dark theme */
.contact-form input:-webkit-autofill,
.contact-form input:-webkit-autofill:hover,
.contact-form input:-webkit-autofill:focus,
.contact-form textarea:-webkit-autofill {
    -webkit-box-shadow: 0 0 0 1000px #18181b inset !important;
    -webkit-text-fill-color: #fafafa !important;
    border: 1px solid var(--color-border) !important;
}

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

.form-input:invalid:not(:placeholder-shown) {
    border-color: #ef4444;
}

.form-input.error {
    border-color: #ef4444;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-input.success {
    border-color: #22c55e;
}

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

.form-error {
    font-size: 0.75rem;
    color: #ef4444;
    min-height: 1rem;
}

.btn-submit {
    width: 100%;
    margin-top: var(--spacing-sm);
    position: relative;
}

.btn-submit:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.form-status {
    text-align: center;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    min-height: 2rem;
}

.form-status.success {
    background: rgba(34, 197, 94, 0.1);
    color: #22c55e;
    border: 1px solid rgba(34, 197, 94, 0.3);
}

.form-status.error {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

/* Responsive Contact Form */
@media (max-width: 768px) {
    .contact-wrapper {
        grid-template-columns: 1fr;
    }

    .contact-form-container {
        order: -1;
    }
}

@media (max-width: 480px) {
    .contact-form-container {
        padding: var(--spacing-lg);
    }
}

/* ===================================
   DATE TIME DISPLAY
   =================================== */
.datetime-display {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) var(--spacing-lg);
    background: rgba(10, 10, 11, 0.9);
    backdrop-filter: blur(12px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    z-index: 999;
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-base);
    pointer-events: none;
}

.datetime-display.visible {
    opacity: 1;
    transform: translateY(0);
}

.datetime-display #current-time {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-accent);
    font-family: var(--font-mono);
    letter-spacing: 0.05em;
}

.datetime-display #current-date {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

@media (max-width: 768px) {
    .datetime-display {
        bottom: var(--spacing-md);
        right: var(--spacing-md);
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .datetime-display #current-time {
        font-size: 1rem;
    }

    .datetime-display #current-date {
        font-size: 0.675rem;
    }
}