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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: #080808;
  color: #f5f5f5;
  line-height: 1.6;
}

a {
  color: inherit;
}

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

button {
  font: inherit;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 8%;
}

/* =========================================================
   2. DESIGN VARIABLES
   ========================================================= */

:root {
  --bg-primary: #080808;
  --bg-secondary: #171717;
  --bg-card: #111111;

  --text-primary: #f5f5f5;
  --text-secondary: #a7a7a7;

  --accent: #b54769;
  --accent-hover: #d65b80;

  --border: #292929;

  --container-width: 1200px;

  --section-spacing: 100px;

  --transition: 0.3s ease;
}
/* =========================================================
   3. HEADER / HERO
   ========================================================= */

#home {
  min-height: 100vh;
  position: relative;
  background: #111111;
  display: flex;
  flex-direction: column;
}

/* ---------- Navigation ---------- */

nav {
  width: 100%;
  min-height: 80px;

  display: flex;
  align-items: center;

  position: fixed;
  top: 0;
  left: 0;
  z-index: 1000;

  background: rgba(8, 8, 8, 0.95);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);

  backdrop-filter: blur(10px);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;

  width: 100%;
}

/* ---------- Logo ---------- */

.logo {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.logo span {
  color: var(--accent);
}

/* ---------- Navigation links ---------- */

.nav-links {
  display: flex;
  align-items: center;
  gap: 35px;

  list-style: none;
}

.nav-links li a {
  position: relative;

  color: var(--text-primary);
  text-decoration: none;

  font-size: 15px;
  font-weight: 500;

  transition: color var(--transition);
}

.nav-links li a::after {
  content: "";

  position: absolute;
  left: 0;
  bottom: -7px;

  width: 0;
  height: 2px;

  background: var(--accent);

  transition: width var(--transition);
}

.nav-links li a:hover {
  color: var(--accent-hover);
}

.nav-links li a:hover::after {
  width: 100%;
}
.menu-toggle {
  display: none;

  background: none;
  border: none;

  color: var(--text-primary);

  font-size: 30px;

  cursor: pointer;
}
/* ---------- Hero ---------- */

.hero {
  min-height: 100vh;

  display: flex;
  align-items: center;
  justify-content: center;
}

.header-text {
  width: 100%;
  max-width: 900px;
  padding: 90px 85px;
  background: #080808;
  border: 1px solid #292929;
  border-radius: 16px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
}

.greeting {
  margin-bottom: 15px;

  color: var(--accent);

  font-size: 20px;
  font-weight: 600;
}

.header-text h2 {
  max-width: 750px;
  margin-bottom: 28px;

  color: var(--text-primary);

  font-size: clamp(42px, 6vw, 72px);
  line-height: 1.05;
  font-weight: 700;
  letter-spacing: -2px;
}

.hero-description {
  max-width: 650px;

  margin-bottom: 40px;

  color: var(--text-secondary);

  font-size: 18px;
  line-height: 1.8;
}

/* ---------- Hero buttons ---------- */

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;

  min-width: 140px;

  padding: 12px 22px;

  border: 1px solid var(--accent);
  border-radius: 6px;

  background: var(--accent);
  color: #ffffff;

  text-decoration: none;

  font-size: 15px;
  font-weight: 600;

  transition:
    background var(--transition),
    border-color var(--transition),
    transform var(--transition);
}

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

  transform: translateY(-3px);
}

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

.btn-outline:hover {
  background: var(--bg-card);
  border-color: var(--accent);
}

/* =========================================================
   4. GENERAL SECTION STYLES
   ========================================================= */

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

.section-title {
  margin-bottom: 25px;

  color: var(--text-primary);

  font-size: clamp(34px, 4vw, 48px);
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: -1px;
}

.section-intro {
  max-width: 650px;

  color: var(--text-secondary);

  font-size: 17px;
  line-height: 1.8;
}

/* =========================================================
   5. ABOUT SECTION
   ========================================================= */

#about {
  background: var(--bg-primary);
}

.about-content {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 70px;

  align-items: center;
}

/* ---------- About image ---------- */

.about-image img {
  width: 100%;

  border-radius: 16px;

  border: 1px solid var(--border);

  filter: grayscale(15%);
}

/* ---------- About text ---------- */

.about-text > p {
  max-width: 700px;

  margin-bottom: 18px;

  color: var(--text-secondary);

  font-size: 16px;
}

/* =========================================================
   6. TECHNICAL TABS
   ========================================================= */

.technical-tabs {
  margin-top: 40px;
}

.tab-titles {
  display: flex;
  gap: 35px;

  margin-bottom: 30px;

  border-bottom: 1px solid var(--border);
}

.tab-links {
  position: relative;

  padding: 0 0 12px;

  border: none;
  background: none;

  color: var(--text-secondary);

  font-size: 16px;
  font-weight: 600;

  cursor: pointer;

  transition: color var(--transition);
}

.tab-links:hover {
  color: var(--text-primary);
}

.tab-links::after {
  content: "";

  position: absolute;
  left: 0;
  bottom: -1px;

  width: 0;
  height: 2px;

  background: var(--accent);

  transition: width var(--transition);
}

.tab-links.active-link {
  color: var(--text-primary);
}

.tab-links.active-link::after {
  width: 100%;
}

/* ---------- Tab content ---------- */

.tab-contents {
  display: none;
}

.tab-contents.active-tab {
  display: block;
}

.tab-contents ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;

  list-style: none;
}

.tab-contents li {
  padding: 8px 14px;

  background: var(--bg-card);

  border: 1px solid var(--border);
  border-radius: 5px;

  color: var(--text-secondary);

  font-size: 14px;

  transition:
    border-color var(--transition),
    color var(--transition);
}

.tab-contents li:hover {
  color: var(--text-primary);
  border-color: var(--accent);
}

/* =========================================================
   7. WHAT I BUILD
   ========================================================= */

#what-i-build {
  background: var(--bg-secondary);
}

.build-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;

  margin-top: 50px;
}

.build-card {
  padding: 35px;

  background: var(--bg-card);

  border: 1px solid var(--border);
  border-radius: 12px;

  transition:
    transform var(--transition),
    border-color var(--transition);
}

.build-card:hover {
  transform: translateY(-6px);

  border-color: var(--accent);
}

.build-card i {
  display: inline-block;

  margin-bottom: 20px;

  color: var(--accent);

  font-size: 42px;
}

.build-card h3 {
  margin-bottom: 12px;

  font-size: 23px;
  font-weight: 600;
}

.build-card p {
  color: var(--text-secondary);

  font-size: 15px;
  line-height: 1.7;
}

/* =========================================================
   8. FEATURED PROJECTS
   ========================================================= */

.featured-projects {
  margin-top: 90px;
}

.subsection-title {
  margin-bottom: 30px;

  font-size: 28px;
  font-weight: 600;
}

.project-card {
  position: relative;

  margin-bottom: 25px;

  padding: 35px;

  background: var(--bg-primary);

  border: 1px solid var(--border);
  border-radius: 12px;

  transition:
    transform var(--transition),
    border-color var(--transition);
}

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

.project-content {
  max-width: 760px;
}

.project-status {
  margin-bottom: 8px;

  color: var(--accent);

  font-size: 13px;
  font-weight: 600;

  text-transform: uppercase;
  letter-spacing: 1px;
}

.project-card h3 {
  margin-bottom: 12px;

  font-size: 28px;
}

.project-card p {
  margin-bottom: 20px;

  color: var(--text-secondary);

  line-height: 1.7;
}

/* ---------- Project technologies ---------- */

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;

  margin-bottom: 25px;
}

.project-tech span {
  padding: 5px 10px;

  background: var(--bg-card);

  border: 1px solid var(--border);
  border-radius: 4px;

  color: var(--text-secondary);

  font-size: 12px;
}

/* ---------- Project links ---------- */

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;

  color: var(--text-primary);

  text-decoration: none;

  font-size: 14px;
  font-weight: 600;

  transition: color var(--transition);
}

.project-link i {
  font-size: 18px;

  transition: transform var(--transition);
}

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

.project-link:hover i {
  transform: translateX(4px);
}
/* =========================================================
   9. CONTACT
   ========================================================= */

#contact {
  background: var(--bg-primary);
}

.contact-content {
  max-width: 700px;
}

.contact-text > p {
  max-width: 600px;

  margin-bottom: 30px;

  color: var(--text-secondary);

  font-size: 17px;
  line-height: 1.8;
}

/* ---------- Contact items ---------- */

.contact-item {
  display: flex;
  align-items: center;
  gap: 12px;

  width: fit-content;

  margin-bottom: 18px;

  color: var(--text-secondary);

  text-decoration: none;

  transition: color var(--transition);
}

.contact-item i {
  color: var(--accent);

  font-size: 23px;
}

.contact-item:hover {
  color: var(--text-primary);
}

/* ---------- Social icons ---------- */

.social-icons {
  display: flex;
  gap: 15px;

  margin: 30px 0;
}

.social-icons a {
  width: 44px;
  height: 44px;

  display: flex;
  align-items: center;
  justify-content: center;

  border: 1px solid var(--border);
  border-radius: 50%;

  color: var(--text-secondary);

  text-decoration: none;

  transition:
    color var(--transition),
    border-color var(--transition),
    transform var(--transition);
}

.social-icons a i {
  font-size: 21px;
}

.social-icons a:hover {
  color: var(--accent);

  border-color: var(--accent);

  transform: translateY(-4px);
}

/* =========================================================
   10. FOOTER
   ========================================================= */

footer {
  padding: 25px 0;

  border-top: 1px solid var(--border);

  background: var(--bg-primary);

  color: #777;

  text-align: center;

  font-size: 13px;
}

/* =========================================================
   11. FOCUS / ACCESSIBILITY
   ========================================================= */

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}
/* =========================================================
   11b. ARTICLES & HOBBIES PAGE
   ========================================================= */

/* ---------- Page banner (used on internal pages) ---------- */

.page-banner {
  background: #111111;
  border-bottom: 1px solid var(--border);
  padding: 160px 0 60px;
}

.page-banner .section-title {
  margin-bottom: 15px;
}

/* ---------- Section split (articles / hobbies) ---------- */

#articles {
  background: var(--bg-primary);
}

#hobbies {
  background: var(--bg-secondary);
}

/* ---------- Article cards ---------- */

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 25px;

  margin-top: 50px;
}

.article-card {
  display: flex;
  flex-direction: column;

  padding: 30px;

  background: var(--bg-card);

  border: 1px solid var(--border);
  border-radius: 12px;

  transition:
    transform var(--transition),
    border-color var(--transition);
}

.article-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;

  margin-bottom: 16px;
}

.article-source {
  display: inline-flex;
  align-items: center;
  gap: 6px;

  padding: 4px 10px;

  border: 1px solid var(--border);
  border-radius: 20px;

  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.article-source.linkedin {
  color: #4db8ff;
  border-color: rgba(77, 184, 255, 0.4);
}

.article-source.devto {
  color: #f5f5f5;
  border-color: rgba(245, 245, 245, 0.3);
}

.article-source i {
  font-size: 15px;
}

.article-date {
  color: var(--text-secondary);
  font-size: 12px;
}

.article-card h3 {
  margin-bottom: 12px;

  font-size: 21px;
  line-height: 1.3;
}

.article-card p {
  flex-grow: 1;

  margin-bottom: 22px;

  color: var(--text-secondary);

  font-size: 15px;
  line-height: 1.7;
}

.article-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;

  color: var(--text-primary);

  text-decoration: none;

  font-size: 14px;
  font-weight: 600;

  transition: color var(--transition);
}

.article-link i {
  font-size: 18px;
  transition: transform var(--transition);
}

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

.article-link:hover i {
  transform: translateX(4px);
}

/* ---------- Hobby cards ---------- */

.hobbies-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 25px;

  margin-top: 50px;
}

.hobby-card {
  padding: 35px;

  background: var(--bg-card);

  border: 1px solid var(--border);
  border-radius: 12px;

  transition:
    transform var(--transition),
    border-color var(--transition);
}

.hobby-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
}

.hobby-card i {
  display: inline-block;

  margin-bottom: 20px;

  color: var(--accent);

  font-size: 38px;
}

.hobby-card h3 {
  margin-bottom: 10px;

  font-size: 21px;
  font-weight: 600;
}

.hobby-card p {
  color: var(--text-secondary);

  font-size: 15px;
  line-height: 1.7;
}

/* =========================================================
   12. TABLET
   ========================================================= */

@media (max-width: 900px) {
  .container {
    padding: 0 6%;
  }

  .build-list {
    grid-template-columns: 1fr;
  }

  .about-content {
    grid-template-columns: 220px 1fr;
    gap: 40px;
  }
}

/* =========================================================
   13. MOBILE
   ========================================================= */

@media (max-width: 600px) {
  :root {
    --section-spacing: 75px;
  }

  .container {
    padding: 0 6%;
  }

  /* ---------- Navigation ---------- */

  nav {
    min-height: 70px;
  }

  .nav-container {
    position: relative;

    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;

    padding-top: 15px;
    padding-bottom: 15px;
  }

  .logo {
    font-size: 24px;
    margin: 0;
  }

  .nav-links {
    width: 100%;

    flex-direction: column;
    align-items: flex-start;

    gap: 12px;
  }

  .nav-links li a {
    font-size: 14px;
  }
  /* ---------- Hamburger button ---------- */

  .menu-toggle {
    display: block;

    width: 42px;
    height: 42px;

    display: flex;
    align-items: center;
    justify-content: center;

    cursor: pointer;
  }

  .menu-toggle i {
    font-size: 30px;
  }

  /* ---------- Hidden navigation ---------- */

  .nav-links {
    position: absolute;

    top: 70px;
    left: 0;

    width: 100%;

    display: none;

    flex-direction: column;
    align-items: flex-start;

    gap: 0;

    padding: 15px 6% 20px;

    background: #080808;

    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
  }

  /* ---------- Open navigation ---------- */

  .nav-links.active {
    display: flex;
  }

  .nav-links li {
    width: 100%;
  }

  .nav-links li a {
    display: block;

    padding: 12px 0;

    font-size: 15px;
  }

  /* ---------- Hero ---------- */
  #home {
    min-height: 100vh;
  }

  .hero {
    min-height: 90vh;
    padding-top: 100px;
    padding-bottom: 50px;
  }

  .header-text {
    padding: 40px 25px;
    border-radius: 12px;
  }

  .greeting {
    font-size: 17px;
  }

  .header-text h2 {
    font-size: 42px;
    letter-spacing: -1px;
  }

  .hero-description {
    font-size: 16px;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: flex-start;
  }

  .btn {
    width: 100%;
    max-width: 220px;
  }

  /* ---------- About ---------- */

  .about-content {
    grid-template-columns: 1fr;
    gap: 35px;
  }

  .about-image {
    max-width: 250px;
  }

  .section-title {
    font-size: 36px;
  }

  /* ---------- Tabs ---------- */

  .tab-titles {
    gap: 20px;
    overflow-x: auto;
  }

  .tab-links {
    flex-shrink: 0;

    font-size: 14px;
  }

  .tab-contents ul {
    gap: 8px;
  }

  /* ---------- Build cards ---------- */

  .build-list {
    grid-template-columns: 1fr;

    margin-top: 35px;
  }

  .build-card {
    padding: 28px;
  }

  /* ---------- Projects ---------- */

  .featured-projects {
    margin-top: 65px;
  }

  .project-card {
    padding: 28px;
  }

  .project-card h3 {
    font-size: 24px;
  }

  /* ---------- Contact ---------- */

  .social-icons {
    margin: 25px 0;
  }
  /* ---------- Page banner ---------- */

  .page-banner {
    padding: 110px 0 40px;
  }

  /* ---------- Articles & hobbies ---------- */

  .articles-grid,
  .hobbies-grid {
    grid-template-columns: 1fr;
    margin-top: 35px;
  }

  .article-card,
  .hobby-card {
    padding: 26px;
  }
}