/* ============================================================
   0. SELF HOSTED FONTS
   ============================================================ */
@font-face {
  font-family: "Roboto";
  font-style: normal;
  font-weight: 300;
  font-display: swap;
  src: url("/fonts/roboto-300.woff2") format("woff2");
}

@font-face {
  font-family: "Roboto";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/fonts/roboto-400.woff2") format("woff2");
}

@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/fonts/jetbrains-mono-400.woff2") format("woff2");
}

/* ============================================================
   1. CSS CUSTOM PROPERTIES
   ============================================================ */
:root {
  --hue: 0;

  --bg:         hsl(var(--hue), 50%, 90%);
  --bg-blob-a:  hsl(var(--hue), 60%, 80%);
  --bg-blob-b:  hsl(calc(var(--hue) + 60), 55%, 82%);

  --glass-bg:   hsla(0, 0%, 100%, 0.5);
  --glass-rim:  hsla(0, 0%, 100%, 0.75);

  --text:       hsl(var(--hue), 50%, 18%);
  --text-muted: hsl(var(--hue), 25%, 40%);

  --accent:     hsl(var(--hue), 70%, 35%);
  --accent-dim: hsla(var(--hue), 70%, 35%, 0.15);
}

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

html {
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  font-family: 'Roboto', system-ui, sans-serif;
  font-weight: 400;
  line-height: 1.6;
  color: var(--text);
  min-height: 100vh;
}

a { color: inherit; }

section[id] {
  scroll-margin-top: 70px;
}

/* ============================================================
   3. ANIMATED BACKGROUND
   ============================================================ */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 65% 55% at 15% 20%, var(--bg-blob-a) 0%, transparent 70%),
    radial-gradient(ellipse 55% 50% at 85% 80%, var(--bg-blob-b) 0%, transparent 70%),
    var(--bg);
}

/* ============================================================
   4. TYPOGRAPHY
   ============================================================ */
h1 {
  font-family: 'Roboto', sans-serif;
  font-weight: 300;
  font-size: clamp(2rem, 5vw, 3.5rem);
  color: var(--text);
  letter-spacing: -0.02em;
}

h2 {
  font-family: 'Roboto', sans-serif;
  font-weight: 400;
  font-size: clamp(1.4rem, 3vw, 2rem);
  color: var(--text);
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--text);
  margin-bottom: 0.5rem;
}

p {
  font-size: clamp(0.95rem, 2vw, 1.05rem);
  color: var(--text-muted);
  line-height: 1.75;
}

/* ============================================================
   5. GLASS UTILITY
   ============================================================ */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  border: 1px solid var(--glass-rim);
  border-radius: 16px;
  box-shadow:
    0 8px 32px hsla(var(--hue), 30%, 20%, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

/* ============================================================
   6. NAVBAR
   ============================================================ */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 1.5rem;
  border-radius: 0;
  border-top: none;
  border-left: none;
  border-right: none;
  border-bottom: 1px solid var(--glass-rim);
}

.logo-link {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  text-decoration: none;
}

.site-logo {
  height: 42px;
  width: auto;
  display: block;
}

.desktop-nav {
  display: flex;
  gap: 0.15rem;
  margin-left: 0.5rem;
}

.nav-link {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.4rem 0.65rem;
  border-radius: 8px;
  transition: color 0.2s, background 0.2s;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent);
  background: var(--accent-dim);
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

/* Navbar search bar */
.navbar-search {
  flex: 1;
  position: relative;
}

.navbar-search-input {
  width: 100%;
  padding: 0.45rem 1rem;
  font-size: 0.9rem;
  font-family: 'Roboto', sans-serif;
  color: var(--text);
  background: var(--glass-bg);
  border: 1px solid var(--glass-rim);
  border-radius: 20px;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9);
  transition: border-color 0.2s, box-shadow 0.2s;
  display: block;
}

.navbar-search-input::placeholder { color: transparent; }

.navbar-search-input::-webkit-search-cancel-button,
.navbar-search-input::-webkit-search-decoration { -webkit-appearance: none; }

.navbar-search-input:focus {
  border-color: hsla(var(--hue), 60%, 40%, 0.4);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9), 0 0 0 2px var(--accent-dim);
}

/* Autocomplete dropdown */
.search-suggestions {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  z-index: 120;
  list-style: none;
  padding: 4px 0;
  margin: 0;
  max-height: 60vh;
  overflow-y: auto;
  font-size: 0.88rem;
}

.search-suggestions[hidden] { display: none; }

.search-suggestions li {
  padding: 0.4rem 1rem;
  cursor: pointer;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: background 0.12s;
}

.search-suggestions li:hover,
.search-suggestions li.active {
  background: var(--accent-dim);
  color: var(--accent);
}

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

/* Language toggle */
.lang-toggle {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--text-muted);
  background: var(--accent-dim);
  border: 1px solid hsla(var(--hue), 60%, 35%, 0.25);
  border-radius: 6px;
  padding: 0.25rem 0.5rem;
  cursor: pointer;
  transition: color 0.2s, background 0.2s;
  white-space: nowrap;
}

.lang-toggle:hover {
  color: var(--accent);
  background: hsla(var(--hue), 70%, 35%, 0.22);
}

/* Hue slider */
.hue-wrap {
  display: flex;
  align-items: center;
}

input[type="range"].hue-slider {
  width: 80px;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  border-radius: 2px;
  background: linear-gradient(to right,
    hsl(0, 80%, 60%),
    hsl(60, 80%, 60%),
    hsl(120, 80%, 60%),
    hsl(180, 80%, 60%),
    hsl(240, 80%, 60%),
    hsl(300, 80%, 60%),
    hsl(360, 80%, 60%));
  cursor: pointer;
  outline: none;
  border: none;
}

.mobile-hue-wrap input[type="range"].hue-slider {
  width: 100%;
}

input[type="range"].hue-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: hsl(var(--hue), 70%, 40%);
  box-shadow: 0 0 6px hsla(var(--hue), 70%, 40%, 0.6);
  cursor: pointer;
  transition: background 0.15s, box-shadow 0.15s;
}

input[type="range"].hue-slider::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: hsl(var(--hue), 70%, 40%);
  box-shadow: 0 0 6px hsla(var(--hue), 70%, 40%, 0.6);
  cursor: pointer;
  border: none;
}

/* Social icons — hue-matched via CSS filter chain */
.social-icon {
  width: 24px;
  height: 24px;
  display: block;
  filter: brightness(0) sepia(1) saturate(4) hue-rotate(calc(var(--hue) * 1deg));
  opacity: 0.55;
  transition: opacity 0.2s, transform 0.2s;
}

.social-icon:hover {
  opacity: 1;
  transform: scale(1.12);
}

.social-icon--large {
  width: 36px;
  height: 36px;
}

/* Hamburger — shown only on mobile */
.hamburger {
  display: none;
  background: none;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  color: var(--text);
  padding: 0.2rem 0.4rem;
  margin-left: auto;
  line-height: 1;
}

/* ============================================================
   7. MOBILE MENU & OVERLAY
   ============================================================ */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 150;
  background: hsla(var(--hue), 20%, 10%, 0.3);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}

.nav-overlay.open { display: block; }

.mobile-menu {
  position: fixed;
  top: 0;
  right: -280px;
  width: 260px;
  height: 100dvh;
  z-index: 200;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  border-radius: 16px 0 0 16px;
  transition: right 0.3s ease;
}

.mobile-menu.open { right: 0; }

.mobile-menu nav {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-top: 1.5rem;
}

.mobile-menu .nav-link {
  font-size: 1rem;
  padding: 0.65rem 0.75rem;
}

.nav-close {
  align-self: flex-end;
  background: none;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  color: var(--text-muted);
  padding: 0.25rem;
}

.mobile-menu-footer {
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--glass-rim);
}

/* ============================================================
   8. MAIN CONTENT LAYOUT
   ============================================================ */
main {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
}

.section-title {
  text-align: center;
  margin-bottom: 2rem;
}

/* ============================================================
   9. HERO SECTION
   ============================================================ */
.hero-section {
  min-height: 50vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  text-align: center;
}

.hero-sub {
  font-family: 'JetBrains Mono', monospace;
  font-size: clamp(0.75rem, 2vw, 0.95rem);
  color: var(--text-muted);
  letter-spacing: 0.03em;
}

/* ============================================================
   10. ABOUT SECTION
   ============================================================ */
.about-card {
  display: flex;
  gap: 2.5rem;
  padding: 2.5rem;
  align-items: flex-start;
}

.profile-img {
  width: clamp(130px, 22%, 200px);
  flex-shrink: 0;
  border-radius: 14px;
  border: 1px solid var(--glass-rim);
  box-shadow: 0 8px 32px hsla(var(--hue), 30%, 20%, 0.18);
  object-fit: cover;
  display: block;
}

.about-text {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* ============================================================
   11. BLOG SECTION
   ============================================================ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}

.project-card {
  padding: 1.75rem;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: transform 0.2s, box-shadow 0.2s;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow:
    0 16px 48px hsla(var(--hue), 30%, 20%, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.project-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.68rem;
  color: var(--accent);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ============================================================
   12. CONTACT SECTION
   ============================================================ */
.contact-card {
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  text-align: center;
}

.email-link {
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-dim);
  padding-bottom: 0.1rem;
  transition: border-color 0.2s;
}

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

.contact-socials {
  display: flex;
  gap: 1.25rem;
  align-items: center;
  justify-content: center;
}

.contact-socials a {
  display: flex;
}

.privacy-text {
  width: 100%;
  max-width: 600px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  border-top: 1px solid var(--glass-rim);
  padding-top: 1.25rem;
  margin-top: 0.25rem;
}

.privacy-text h3 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0;
}

.privacy-text p {
  font-size: 0.85rem;
  text-align: center;
}

.privacy-text a {
  font-size: 0.85rem;
  color: var(--accent);
  text-decoration: underline;
}

/* ============================================================
   13. FOOTER
   ============================================================ */
.site-footer {
  text-align: center;
  padding: 2rem 1rem 3rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--text-muted);
  opacity: 0.65;
}

/* ============================================================
   14. MOBILE RESPONSIVE
   ============================================================ */
/* Mobile menu controls */
.mobile-hue-wrap {
  padding: 0.25rem 0 0.5rem;
}

.mobile-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-top: 0.25rem;
}

@media (max-width: 700px) {
  .desktop-nav,
  .navbar-search,
  .nav-controls { display: none; }
  .hamburger { display: block; }

  main { padding: 0 1rem; }

  .section { padding: 3rem 0; }

  .hero-section { min-height: 35vh; }

  .about-card {
    flex-direction: column;
    align-items: center;
    padding: 1.5rem;
    gap: 1.5rem;
    text-align: center;
  }

  .profile-img { width: clamp(120px, 55%, 200px); }

  .contact-card { padding: 1.5rem; }
}