/* ========================
   DESIGN TOKENS
   ======================== */
:root {
  --bg: #0d1117;
  --surface: #161b22;
  --surface-2: #21262d;
  --border: #30363d;
  --text: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #484f58;
  --accent: #a78bfa;
  --accent-hover: rgba(167, 139, 250, 0.08);
  --accent-border: rgba(167, 139, 250, 0.25);
  --blue: #79c0ff;
  --font: 'Lexend', sans-serif;
  --radius: 12px;
  --transition: all 0.3s ease;
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.4);
  --max-w: 900px;
}

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

html {
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--border) var(--bg);
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

body {
  font-family: var(--font);
  background-color: var(--bg);
  color: var(--text-secondary);
  line-height: 1.6;
  overflow-x: hidden;
}

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

/* ========================
   SCROLL PROGRESS
   ======================== */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--blue));
  z-index: 9999;
  width: 0%;
  transition: width 0.05s linear;
}

/* ========================
   NAVBAR — floating pill
   ======================== */
.navbar {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  width: calc(100% - 48px);
  max-width: 860px;
  background: rgba(13, 17, 23, 0.65);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 100px;
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.45),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
  transition: background 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}

.navbar.scrolled {
  background: rgba(13, 17, 23, 0.90);
  border-color: rgba(167, 139, 250, 0.08);
  box-shadow:
    0 8px 40px rgba(0, 0, 0, 0.55),
    0 0 0 1px rgba(167, 139, 250, 0.04),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.nav-container {
  padding: 10px 12px 10px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.nav-logo {
  font-size: 16px;
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: 2.5px;
  flex-shrink: 0;
  transition: opacity 0.2s;
}

.nav-logo:hover { opacity: 0.75; }

.nav-links {
  display: flex;
  gap: 2px;
  align-items: center;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  font-weight: 300;
  letter-spacing: 0.2px;
  padding: 6px 14px;
  border-radius: 100px;
  transition: background 0.2s ease, color 0.2s ease;
}

.nav-link::after { display: none; }

.nav-link:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.07);
}

.nav-actions {
  display: flex;
  gap: 6px;
  align-items: center;
}

.nav-btn {
  color: var(--text-secondary);
  text-decoration: none;
  font-family: var(--font);
  font-size: 13px;
  font-weight: 300;
  padding: 7px 16px;
  border-radius: 100px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.nav-btn:hover {
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.09);
}

.nav-btn-accent {
  background: var(--accent);
  color: #0d1117;
  border-color: transparent;
  font-weight: 500;
}

.nav-btn-accent:hover {
  background: #c4b5fd;
  color: #0d1117;
  border-color: transparent;
  box-shadow: 0 4px 16px rgba(167, 139, 250, 0.3);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  flex-shrink: 0;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: var(--transition);
  transform-origin: center;
}

.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ========================
   HERO
   ======================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
}

.orb-1 {
  width: 560px;
  height: 560px;
  background: radial-gradient(circle, rgba(167, 139, 250, 0.12) 0%, transparent 70%);
  top: -80px;
  right: 0;
  animation: orb-float 9s ease-in-out infinite;
}

.orb-2 {
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(121, 192, 255, 0.09) 0%, transparent 70%);
  bottom: 0;
  left: 5%;
  animation: orb-float 13s ease-in-out infinite reverse;
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(167, 139, 250, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(167, 139, 250, 0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  -webkit-mask-image: radial-gradient(ellipse at center, black 20%, transparent 80%);
  mask-image: radial-gradient(ellipse at center, black 20%, transparent 80%);
}

@keyframes orb-float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(24px, -16px) scale(1.04); }
  66% { transform: translate(-16px, 12px) scale(0.96); }
}

/* ========================
   SIMPLE HERO LAYOUT
   ======================== */
.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 1060px;
  margin: 0 auto;
  padding: 0 48px;
  width: 100%;
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  gap: 0;
}

.hero-text-col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  max-width: 560px;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}

.hero-kicker-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--blue);
  box-shadow: 0 0 12px rgba(121, 192, 255, 0.85);
  animation: hero-dot-pulse 2.2s ease-in-out infinite;
}

@keyframes hero-dot-pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.35); opacity: 0.7; }
}

.hero-headline {
  font-size: clamp(38px, 5vw, 64px);
  font-weight: 700;
  color: var(--text);
  line-height: 1.1;
  letter-spacing: -2px;
  margin-bottom: 24px;
}

.hero-name-accent {
  color: var(--accent);
}

.hero-cursor {
  color: var(--accent);
  font-weight: 300;
  animation: hero-blink 1s step-end infinite;
  margin-left: 1px;
}

@keyframes hero-blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

.hero-bio {
  font-size: 17px;
  font-weight: 300;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 440px;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}


/* Scroll-down arrow */
.scroll-down {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-muted);
  font-size: 16px;
  text-decoration: none;
  animation: bounce 2.4s ease-in-out infinite;
  transition: color 0.3s;
  z-index: 1;
}

.scroll-down:hover { color: var(--accent); }

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.5; }
  50% { transform: translateX(-50%) translateY(10px); opacity: 1; }
}

/* ========================
   BUTTONS
   ======================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 400;
  font-family: var(--font);
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #0d1117;
  font-weight: 500;
}

.btn-primary:hover {
  background: #c4b5fd;
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(167, 139, 250, 0.28);
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent-border);
}

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

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.btn-ghost:hover {
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.04);
  transform: translateY(-2px);
}

.btn-full {
  width: 100%;
  justify-content: center;
}

/* ========================
   SECTIONS
   ======================== */
.section {
  padding: 120px 32px;
}

.section-container {
  max-width: var(--max-w);
  margin: 0 auto;
}

.section-label {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 3px;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.section-label::before {
  content: '';
  width: 32px;
  height: 1px;
  background: var(--accent);
  flex-shrink: 0;
}

.section-heading {
  font-size: clamp(34px, 5vw, 52px);
  font-weight: 600;
  color: var(--text);
  margin-bottom: 56px;
  letter-spacing: -1.5px;
  line-height: 1.1;
}

/* ========================
   EXPERIENCE — Tab layout
   ======================== */
.exp-tabs {
  display: grid;
  grid-template-columns: 172px 1fr;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  min-height: 300px;
}

/* Tab sidebar */
.exp-tab-list {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border);
  background: var(--bg);
  padding: 10px 0;
}

.exp-tab {
  position: relative;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  background: none;
  border: none;
  border-left: 2px solid transparent;
  cursor: pointer;
  text-align: left;
  width: 100%;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.exp-tab:hover {
  background: var(--accent-hover);
  border-left-color: rgba(167, 139, 250, 0.3);
}

.exp-tab.active {
  background: rgba(167, 139, 250, 0.07);
  border-left-color: var(--accent);
}

.exp-tab-num {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
  transition: color 0.2s;
}

.exp-tab.active .exp-tab-num { color: var(--accent); }

.exp-tab-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.exp-tab-company {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color 0.2s;
}

.exp-tab.active .exp-tab-company { color: var(--text); }

.exp-tab-year {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 300;
}

/* Content panel */
.exp-panel {
  padding: 40px 44px;
  display: none;
  flex-direction: column;
  gap: 20px;
  justify-content: center;
}

.exp-panel.active { display: flex; }

.exp-panel-top {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.exp-panel-title {
  font-size: 22px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.5px;
  line-height: 1.25;
}

.exp-panel-at {
  color: var(--text-muted);
  font-weight: 300;
  margin: 0 5px;
}

.exp-panel-co { color: var(--accent); }

.exp-panel-date {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 300;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 4px 12px;
  border: 1px solid var(--border);
  border-radius: 20px;
  width: fit-content;
  background: var(--bg);
}

.exp-panel-desc {
  font-size: 15px;
  font-weight: 300;
  line-height: 1.8;
  color: var(--text-secondary);
  max-width: 56ch;
}

/* ========================
   TECH STACK TAGS
   ======================== */
.tech-stack {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tech-stack li {
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.6px;
  color: var(--accent);
  background: var(--accent-hover);
  border: 1px solid var(--accent-border);
  padding: 4px 14px;
  border-radius: 20px;
  text-transform: uppercase;
}

/* ========================
   CARD LINKS
   ======================== */
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 300;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}

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

.card-link .fa-external-link-alt { font-size: 10px; }

.project-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  align-items: center;
}

.card-link-live { color: var(--blue); }
.card-link-live:hover { color: var(--blue); border-bottom-color: var(--blue); }

/* ========================
   PROJECTS
   ======================== */
.projects-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
}

.project-card:hover {
  border-color: var(--accent-border);
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg), 0 0 48px rgba(167, 139, 250, 0.07);
}

.project-img-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

.project-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.project-card:hover .project-img-wrap img {
  transform: scale(1.05);
}

.project-img-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 50%, rgba(22, 27, 34, 0.6) 100%);
  pointer-events: none;
}

.project-num {
  position: absolute;
  top: 10px;
  right: 10px;
  font-size: 11px;
  font-weight: 700;
  color: #fff;
  background: rgba(13, 17, 23, 0.75);
  padding: 3px 9px;
  border-radius: 999px;
  letter-spacing: 0.5px;
  z-index: 1;
  user-select: none;
}

.project-body {
  padding: 20px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.project-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.4px;
  line-height: 1.2;
  transition: color 0.3s;
}

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

.project-desc {
  font-size: 14px;
  font-weight: 300;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* ========================
   ABOUT
   ======================== */
.about-grid {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 72px;
  align-items: center;
}

.about-text .section-heading {
  margin-bottom: 28px;
}

.about-text p {
  font-size: 16px;
  font-weight: 300;
  line-height: 1.85;
  color: var(--text-secondary);
  margin-bottom: 18px;
}

.about-text a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-border);
  transition: border-color 0.3s;
}

.about-text a:hover { border-bottom-color: var(--accent); }

.about-socials {
  display: flex;
  gap: 10px;
  margin-top: 28px;
}

.about-socials a {
  color: var(--text-muted);
  font-size: 17px;
  text-decoration: none;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  border: 1px solid transparent;
  transition: var(--transition);
}

.about-socials a:hover {
  color: var(--accent);
  border-color: var(--accent-border);
  background: var(--accent-hover);
  transform: translateY(-3px);
}


/* Photo */
.about-photo-wrap {
  display: flex;
  justify-content: center;
}

.about-photo-frame {
  position: relative;
  width: 100%;
  max-width: 300px;
}

.about-photo {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  object-position: top center;
  border-radius: 20px;
  border: 1px solid var(--border);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5);
  display: block;
}

/* "Open to work" badge on the photo */
.about-photo-badge {
  position: absolute;
  bottom: -14px;
  left: 50%;
  transform: translateX(-50%);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: 7px 16px;
  border-radius: 999px;
  white-space: nowrap;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #28c840;
  flex-shrink: 0;
  box-shadow: 0 0 6px rgba(40, 200, 64, 0.6);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 6px rgba(40, 200, 64, 0.6); }
  50%       { box-shadow: 0 0 12px rgba(40, 200, 64, 0.9); }
}


/* ========================
   FOOTER
   ======================== */
.footer {
  border-top: 1px solid var(--border);
  padding: 56px 32px;
  background: var(--bg);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}

.footer-socials {
  display: flex;
  gap: 16px;
}

.footer-socials a {
  color: var(--text-muted);
  font-size: 18px;
  text-decoration: none;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  border: 1px solid transparent;
  transition: var(--transition);
}

.footer-socials a:hover {
  color: var(--accent);
  border-color: var(--accent-border);
  background: var(--accent-hover);
  transform: translateY(-3px);
}

.footer-copy {
  font-size: 12px;
  font-weight: 300;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

/* ========================
   SCROLL REVEAL
   ======================== */
.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: none;
}

/* ========================
   RESPONSIVE — TABLET (960px)
   ======================== */
@media (max-width: 960px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 0;
    padding: 0 32px;
    min-height: auto;
    padding-top: 130px;
    padding-bottom: 80px;
  }

  .projects-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ========================
   RESPONSIVE — MOBILE (768px)
   ======================== */
@media (max-width: 768px) {
  /* Navbar */
  .navbar { top: 12px; width: calc(100% - 24px); }
  .nav-container { padding: 9px 10px 9px 20px; }
  .hamburger { display: flex; }

  .nav-links {
    display: none;
    position: fixed;
    top: 72px;
    left: 12px;
    right: 12px;
    background: rgba(13, 17, 23, 0.97);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 20px;
    flex-direction: column;
    padding: 8px;
    gap: 2px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
  }

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

  .nav-link {
    padding: 13px 16px;
    border-radius: 12px;
    font-size: 15px;
    border-bottom: none;
  }

  .nav-link:last-child { border-bottom: none; }

  /* Sections */
  .section { padding: 80px 20px; }

  /* Hero */
  .hero-inner { padding: 110px 20px 60px; min-height: auto; gap: 0; }
  .hero-headline { font-size: 38px; letter-spacing: -1.5px; }
  .hero-bio { margin-bottom: 30px; }
  .hero-actions { width: 100%; }
  .hero-actions .btn { width: 100%; justify-content: center; }

  /* Experience */
  .exp-tabs { grid-template-columns: 1fr; }
  .exp-tab-list {
    flex-direction: row;
    overflow-x: auto;
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 0;
  }
  .exp-tab {
    border-left: none;
    border-bottom: 2px solid transparent;
    flex-direction: column;
    align-items: flex-start;
    white-space: nowrap;
    flex-shrink: 0;
  }
  .exp-tab.active { border-bottom-color: var(--accent); border-left-color: transparent; }
  .exp-panel { padding: 24px 20px; gap: 14px; }

  /* Projects */
  .projects-list { grid-template-columns: 1fr; }
  .project-body { padding: 16px; }
  .project-title { font-size: 18px; }

  /* About */
  .about-grid { grid-template-columns: 1fr; gap: 56px; }
  .about-photo-wrap { display: flex; justify-content: center; }
  .about-photo-frame { max-width: 240px; }

  /* Section headings */
  .section-heading { margin-bottom: 40px; }
}

/* ========================
   RESPONSIVE — SMALL MOBILE (480px)
   ======================== */
@media (max-width: 480px) {
  .nav-actions .nav-btn:first-child { display: none; }
  .hero-headline { font-size: 34px; }
  .section-heading { font-size: 30px; letter-spacing: -1px; }
  .project-num { font-size: 10px; }
}