/* ==========================================================================
   PERSONAL BLOG — Minimalistic & Stylish
   Inspired by hudovich.com & listingcat.com
   ========================================================================== */

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

:root {
  /* Colors */
  --color-bg: #fafaf9;
  --color-bg-alt: #f3f3f1;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-text-muted: #6b6b6b;
  --color-accent: #7c3aed;
  --color-accent-hover: #6d28d9;
  --color-accent-light: #f3f0ff;
  --color-border: #e5e5e5;
  --color-border-light: #f0f0f0;

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

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2.5rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;

  /* Sizes */
  --max-width: 720px;
  --nav-height: 64px;

  /* Transitions */
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-height) + 2rem);
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  display: block;
}

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

::selection {
  background: var(--color-accent);
  color: #fff;
}


/* ---------- CONTAINER ---------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}


/* ---------- NAV ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(250, 250, 249, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-light);
  z-index: 100;
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: -0.02em;
}

.nav__logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  background: var(--color-text);
  color: #fff;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  list-style: none;
}

.nav__links a {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  font-weight: 500;
  transition: color var(--transition);
}

.nav__links a:hover {
  color: var(--color-text);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition);
}

.nav__toggle--active span:first-child {
  transform: rotate(45deg) translate(2.5px, 2.5px);
}

.nav__toggle--active span:last-child {
  transform: rotate(-45deg) translate(2.5px, -2.5px);
}


/* ---------- HERO ---------- */
.hero {
  padding: calc(var(--nav-height) + var(--space-3xl)) 0 var(--space-3xl);
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-md);
  background: #f3f0ff;
  color: #5b21b6;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-xl);
  border: 1px solid #e0d4fc;
}

.hero__badge::before {
  content: '';
  width: 8px;
  height: 8px;
  background: #8b5cf6;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero__title {
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.035em;
  margin-bottom: var(--space-lg);
}

.highlight {
    text-decoration: underline;
    text-decoration-color: var(--color-accent);
    text-decoration-thickness: 4px;
    text-underline-offset: 8px;
}

.hero__subtitle {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 540px;
  margin-bottom: var(--space-xl);
}

.hero__actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}


/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.7rem 1.4rem;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition);
  cursor: pointer;
  border: none;
}

.btn__icon {
  font-size: 1rem;
}

.btn--primary {
  background: var(--color-text);
  color: #fff;
}

.btn--primary:hover {
  background: #333;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.btn--outline {
  background: transparent;
  border: 1.5px solid var(--color-border);
  color: var(--color-text);
}

.btn--outline:hover {
  border-color: var(--color-text);
  transform: translateY(-1px);
}

.btn--small {
  padding: 0.45rem 1rem;
  font-size: 0.825rem;
  border-radius: var(--radius-sm);
  background: var(--color-text);
  color: #fff;
}

.btn--small:hover {
  background: #333;
}


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

.section--alt {
  background: var(--color-bg-alt);
}

.section__title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.section__desc {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2xl);
  line-height: 1.6;
}


/* ---------- FEATURED CARD ---------- */
.featured-card {
  display: block;
  padding: var(--space-2xl);
  background: var(--color-surface);
  border: 1.5px solid var(--color-accent-light);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

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

.featured-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(124, 58, 237, 0.08);
}

.featured-card__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 3px 10px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  background: var(--color-accent-light);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-lg);
}

.featured-card__title {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.3;
  margin-bottom: var(--space-md);
}

.featured-card__excerpt {
  font-size: 1rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-xl);
  max-width: 560px;
}

.featured-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.featured-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.featured-card__meta time {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.featured-card__read {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-accent);
  transition: color var(--transition);
}

.featured-card:hover .featured-card__read {
  color: var(--color-accent-hover);
}


/* ---------- ARTICLE CARDS ---------- */
.articles {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.article-card {
  display: block;
  padding: var(--space-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
}

.article-card:hover {
  border-color: var(--color-border);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.04);
}

.article-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-sm);
}

.article-card__meta time {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.article-card__tag {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 2px 8px;
  background: var(--color-accent-light);
  color: var(--color-accent);
  border-radius: var(--radius-full);
}

.article-card__title {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.35;
  margin-bottom: var(--space-sm);
}

.article-card__excerpt {
  font-size: 0.925rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.article-card__read {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-accent);
  transition: color var(--transition);
}

.article-card:hover .article-card__read {
  color: var(--color-accent-hover);
}


/* ---------- PROJECT CARDS ---------- */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
    justify-content: center;
}

.project-card {
  padding: var(--space-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
}

.project-card:hover {
  border-color: var(--color-border);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.04);
}

.project-card__icon {
  font-size: 1.75rem;
  margin-bottom: var(--space-md);
}

.project-card__title {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-sm);
}

.project-card__desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.project-card__links a {
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--color-accent);
}

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


/* ---------- ABOUT ---------- */
.about__content p {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
}

.about__content strong {
  color: var(--color-text);
  font-weight: 600;
}

.about__stack {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.tag {
  display: inline-block;
  padding: 4px 12px;
  font-size: 0.8rem;
  font-weight: 500;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
}


/* ---------- SOCIALS ---------- */
.socials {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.social-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.6rem 1.2rem;
  font-size: 0.875rem;
  font-weight: 600;
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}

.social-link:hover {
  border-color: var(--color-border);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

.social-link__icon {
  display: flex;
  color: var(--color-text-muted);
}


/* ---------- CONTACT ---------- */
.contact {
  max-width: 500px;
}

.contact p {
  font-size: 1rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
  line-height: 1.7;
}

.link {
  color: var(--color-accent);
  font-weight: 600;
  border-bottom: 1.5px solid transparent;
  transition: border-color var(--transition);
}

.link:hover {
  border-bottom-color: var(--color-accent);
}


/* ---------- FOOTER ---------- */
.footer {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--color-border-light);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer p {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.footer__note {
  font-size: 0.8rem;
}


/* ---------- ANIMATIONS ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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


/* ---------- POST PAGE ---------- */
.post {
  padding: calc(var(--nav-height) + var(--space-3xl)) 0 var(--space-3xl);
}

.post__back {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: var(--space-xl);
  transition: color var(--transition);
}

.post__back:hover {
  color: var(--color-text);
}

.post__meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.post__meta time {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.post__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.035em;
  margin-bottom: var(--space-lg);
}

.post__content {
  font-size: 1.05rem;
  line-height: 1.85;
  color: #333;
}

.post__content p {
  margin-bottom: var(--space-lg);
}

.post__content h2 {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
}

.post__content h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
}

.post__content ul,
.post__content ol {
  padding-left: var(--space-xl);
  margin-bottom: var(--space-lg);
}

.post__content li {
  margin-bottom: var(--space-sm);
}

.post__content code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--color-bg-alt);
  padding: 2px 6px;
  border-radius: 4px;
}

.post__content pre {
  background: #1e1e2e;
  color: #cdd6f4;
  padding: var(--space-xl);
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin-bottom: var(--space-lg);
  font-size: 0.875rem;
  line-height: 1.7;
}

.post__content pre code {
  background: none;
  padding: 0;
  font-size: inherit;
  color: inherit;
}

.post__content blockquote {
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-lg);
  margin: var(--space-xl) 0;
  color: var(--color-text-muted);
  font-style: italic;
}


/* ---------- RESPONSIVE ---------- */
@media (max-width: 640px) {
  .nav__links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(250, 250, 249, 0.98);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    flex-direction: column;
    padding: var(--space-xl);
    gap: var(--space-lg);
    border-bottom: 1px solid var(--color-border-light);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-slow);
  }

  .nav__links--open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav__toggle {
    display: flex;
  }

  .hero__title {
    font-size: 2rem;
  }

  .hero__actions {
    flex-direction: column;
  }

  .hero__actions .btn {
    justify-content: center;
  }

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

  .footer__inner {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }

  .socials {
    flex-direction: column;
  }
}

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

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