/* ─── TOKENS ─────────────────────────────────────────────────────────── */
:root {
  --bg-base: hsl(240, 43%, 3%);
  --bg-surface: hsl(240, 30%, 7%);
  --bg-overlay: hsl(240, 27%, 10%);

  --text-primary: hsl(240, 20%, 95%);
  --text-secondary: hsl(240, 20%, 72%);
  --text-muted: hsl(240, 20%, 55%);

  --accent: hsl(243, 75%, 65%);
  --accent-hover: hsl(243, 75%, 71%);
  --accent-glow: hsla(243, 75%, 65%, 0.4);
  --accent-subtle: hsla(243, 75%, 65%, 0.1);

  --border: hsl(240, 20%, 18%);
  --border-hover: hsla(243, 75%, 65%, 0.3);
  --border-focus: var(--accent);

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 32px;
  --space-xl: 64px;
  --space-2xl: 128px;

  --font-display: "Geist", sans-serif;
  --font-body: "JetBrains Mono", sans-serif;

  --size-hero: clamp(2.2rem, 4.5vw, 5.5rem);
  --size-section: clamp(1.6rem, 3vw, 2.6rem);
  --size-body: 1rem;
  --size-small: 0.875rem;
  --size-label: 0.75rem;

  --radius-sm: 4px;
  --radius-md: 10px;
  --radius-lg: 18px;

  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 280ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

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

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

/* ─── CANVAS STARFIELD (fixed, full viewport) ─────────────────────────── */
#starfield {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* ─── CURSOR GLOW ────────────────────────────────────────────────────── */
.cursor-glow {
  position: fixed;
  top: 0;
  left: 0;
  width: 600px;
  height: 600px;
  background: radial-gradient(
    circle at center,
    hsla(243, 75%, 65%, 0.12) 0%,
    transparent 60%
  );
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  opacity: 0;
  transition: opacity 0.8s ease;
  mix-blend-mode: screen;
  /* Start centered, JS will take over */
  transform: translate(calc(50vw - 300px), calc(50vh - 300px));
}

.cursor-glow.active {
  opacity: 1;
}

/* ─── INTRO SCREEN ───────────────────────────────────────────────────── */
#intro {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: all;
}

#intro.hidden {
  opacity: 0;
  pointer-events: none;
  transition: opacity 600ms ease;
}

#intro-text {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 5vw, 3.5rem);
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  opacity: 0;
  transform: translateY(12px);
  transition:
    opacity 500ms ease,
    transform 500ms ease;
}

#intro-text.visible {
  opacity: 1;
  transform: translateY(0);
}

#intro-text.fade-out {
  opacity: 0;
  transform: translateY(-12px);
}

/* ─── MAIN CONTENT ───────────────────────────────────────────────────── */
#main-content {
  position: relative;
  z-index: 1;
  opacity: 0;
  transition: opacity 600ms ease;
}

#main-content.visible {
  opacity: 1;
}

/* ─── NAVIGATION ─────────────────────────────────────────────────────── */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  padding: var(--space-md) var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: hsla(240, 43%, 3%, 0.7);
  border-bottom: 1px solid var(--border);
  transition: border-color var(--transition-base);
}

.nav-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-links a {
  font-size: var(--size-small);
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 100%;
  height: 1px;
  background: var(--accent);
  transition: right var(--transition-base);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  right: 0;
}

.nav-links a:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
}

/* ─── HAMBURGER BUTTON ────────────────────────────────────────────────── */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 8px 7px;
  transition: border-color var(--transition-fast);
}

.nav-hamburger:hover {
  border-color: var(--border-hover);
}

.nav-hamburger:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 4px;
}

.nav-hamburger span {
  display: block;
  width: 100%;
  height: 1px;
  background: var(--text-primary);
  border-radius: 2px;
  transition:
    transform var(--transition-base),
    opacity var(--transition-base);
  transform-origin: center;
}

.nav-hamburger.open span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-hamburger.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav-hamburger.open span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* ─── MOBILE DRAWER ───────────────────────────────────────────────────── */
.nav-drawer {
  display: none;
  position: fixed;
  top: 57px;
  left: 0;
  right: 0;
  z-index: 49;
  background: hsla(240, 43%, 3%, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: var(--space-lg) var(--space-md);
  flex-direction: column;
  gap: 2px;
  transform: translateY(-8px);
  opacity: 0;
  transition:
    opacity var(--transition-base),
    transform var(--transition-base);
  pointer-events: none;
}

.nav-drawer.open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}

.nav-drawer a {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 14px var(--space-md);
  border-radius: var(--radius-md);
  transition:
    color var(--transition-fast),
    background var(--transition-fast);
}

.nav-drawer a:hover {
  color: var(--text-primary);
  background: var(--accent-subtle);
}

.nav-drawer a:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

/* ─── HERO ───────────────────────────────────────────────────────────── */
#hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-xl) var(--space-lg);
  position: relative;
}

/* ─── HERO AVATAR ─────────────────────────────────────────────────────── */
.hero-avatar {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  overflow: hidden;
  margin-bottom: var(--space-lg);
  position: relative;
  opacity: 0;
  transform: translateY(16px);
  /* accent glow ring */
  box-shadow:
    0 0 0 2px var(--bg-base),
    0 0 0 4px var(--accent-glow),
    0 0 24px var(--accent-subtle);
  transition:
    box-shadow var(--transition-base),
    opacity 600ms 50ms ease,
    transform 600ms 50ms ease;
}

.hero-avatar.in {
  opacity: 1;
  transform: translateY(0);
}

.hero-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  filter: grayscale(100%) contrast(1.05);
  transition: filter var(--transition-slow);
}

.hero-avatar:hover {
  box-shadow:
    0 0 0 2px var(--bg-base),
    0 0 0 4px hsla(239, 100%, 71%, 0.7),
    0 0 40px var(--accent-glow);
}

.hero-avatar:hover img {
  filter: grayscale(0%) contrast(1);
}

/* ─── HERO NAME LINE ──────────────────────────────────────────────────── */
.hero-name {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.6rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity 600ms 120ms ease,
    transform 600ms 120ms ease;
}

.hero-name.in {
  opacity: 1;
  transform: translateY(0);
}

.hero-name .greeting {
  color: var(--text-secondary);
  font-weight: 400;
}

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

/* ─── HERO DESCRIPTOR ─────────────────────────────────────────────────── */
.hero-descriptor {
  font-size: clamp(0.95rem, 1.6vw, 1.1rem);
  color: var(--text-secondary);
  font-weight: 300;
  letter-spacing: 0.01em;
  margin-bottom: var(--space-xl);
  opacity: 0;
  transform: translateY(14px);
  transition:
    opacity 600ms 260ms ease,
    transform 600ms 260ms ease;
}

.hero-descriptor.in {
  opacity: 1;
  transform: translateY(0);
}

.hero-descriptor strong {
  color: var(--text-primary);
  font-weight: 500;
}

.hero-descriptor em {
  font-style: italic;
  color: var(--accent);
}

/* ─── HERO ACTIONS ROW ────────────────────────────────────────────────── */
.hero-actions {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--space-lg);
  opacity: 0;
  transform: translateY(14px);
  transition:
    opacity 600ms 380ms ease,
    transform 600ms 380ms ease;
}

.hero-actions.in {
  opacity: 1;
  transform: translateY(0);
}

/* Center socials within their grid cell */
.hero-actions .hero-socials {
  justify-self: center;
}

/* Ghost button fills its grid cell and centers its label */
.hero-actions .btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* ─── HERO SOCIALS ────────────────────────────────────────────────── */
.hero-socials {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
}

.social-btn {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-primary);
  cursor: pointer;
  text-decoration: none;
  transition:
    color var(--transition-fast),
    border-color var(--transition-fast),
    background var(--transition-fast),
    transform var(--transition-fast);
}

.social-btn svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.social-btn:hover {
  color: var(--text-primary);
  border-color: var(--accent);
  background: var(--accent-subtle);
  transform: translateY(-2px);
}

.social-btn:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 3px;
}

/* Tooltips */
.social-btn::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  margin-bottom: 8px;
  padding: 4px 10px;
  background: var(--text-primary);
  color: var(--bg-base);
  font-size: var(--size-label);
  font-family: var(--font-body);
  font-weight: 600;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity var(--transition-fast),
    transform var(--transition-fast),
    visibility var(--transition-fast);
  z-index: 10;
}

.social-btn::before {
  content: "";
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  margin-bottom: 4px;
  border-width: 4px;
  border-style: solid;
  border-color: var(--text-primary) transparent transparent transparent;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity var(--transition-fast),
    transform var(--transition-fast),
    visibility var(--transition-fast);
  z-index: 10;
}

.social-btn:hover::after,
.social-btn:focus-visible::after,
.social-btn:hover::before,
.social-btn:focus-visible::before {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* ─── HERO ACTIONS DIVIDER ──────────────────────────────────────────── */
.hero-actions-divider {
  width: 1px;
  height: 24px;
  background: var(--border);
}

/* ─── BUTTONS ───────────────────────────────────────────────────────── */
.btn-primary {
  padding: 12px 28px;
  background: var(--accent);
  color: #fff;
  font-family: var(--font-body);
  font-size: var(--size-small);
  font-weight: 600;
  letter-spacing: 0.04em;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition:
    background var(--transition-fast),
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px var(--accent-glow);
}

.btn-primary:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 4px;
}

.btn-ghost {
  padding: 12px 28px;
  background: transparent;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: var(--size-small);
  font-weight: 500;
  letter-spacing: 0.04em;
  border-radius: 999px;
  border: 1px solid var(--border);
  cursor: pointer;
  transition:
    border-color var(--transition-fast),
    background var(--transition-fast),
    transform var(--transition-fast);
}

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

.btn-ghost:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 4px;
}

/* ─── HERO SCROLL HINT ────────────────────────────────────────────────── */
.hero-scroll-hint {
  position: absolute;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--size-label);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  opacity: 0;
  animation: scroll-hint-bob 2.5s ease-in-out infinite;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--text-muted), transparent);
}

@keyframes scroll-hint-bob {
  0%,
  100% {
    transform: translateX(-50%) translateY(0);
    opacity: 0.5;
  }

  50% {
    transform: translateX(-50%) translateY(6px);
    opacity: 1;
  }
}

/* ─── SECTION SHARED ─────────────────────────────────────────────────── */
.section {
  position: relative;
  z-index: 1;
  padding: var(--space-2xl) var(--space-xl);
  max-width: 1100px;
  margin: 0 auto;
}

.section-header {
  margin-bottom: var(--space-xl);
}

.section-label {
  font-size: var(--size-label);
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: var(--space-sm);
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--size-section);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

/* reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 600ms ease,
    transform 600ms ease;
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* ─── ABOUT ──────────────────────────────────────────────────────────── */
/* #about {
  padding-top: var(--space-2xl);
} */

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.about-body {
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 1.05rem;
  font-weight: 300;
}

.about-body p + p {
  margin-top: var(--space-md);
}

.about-body strong {
  color: var(--text-primary);
  font-weight: 500;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.stat-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-md);
  text-align: center;
  transition:
    border-color var(--transition-base),
    background var(--transition-base);
}

.stat-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-overlay);
}

.stat-number {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: var(--space-xs);
}

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

.stat-desc {
  font-size: var(--size-small);
  color: var(--text-muted);
  font-weight: 400;
}

/* ─── EXPERIENCE ─────────────────────────────────────────────────────── */
.experience-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}

.experience-list::before {
  content: "";
  position: absolute;
  left: 12px;
  transform: translateX(-50%);
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(to bottom, var(--accent), transparent);
}

.exp-item {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: var(--space-md);
  padding-bottom: var(--space-xl);
}

.exp-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  background: var(--bg-base);
  margin-top: 5px;
  justify-self: center;
  position: relative;
  z-index: 1;
}

.exp-content {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: border-color var(--transition-base);
}

.exp-content:hover {
  border-color: var(--border-hover);
  background: var(--bg-overlay);
}

.exp-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-md);
  margin-bottom: var(--space-sm);
  flex-wrap: wrap;
}

.exp-role {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.exp-company {
  color: var(--accent);
  font-weight: 500;
  font-size: var(--size-small);
}

.exp-period {
  font-size: var(--size-label);
  letter-spacing: 0.08em;
  color: var(--text-muted);
  font-weight: 500;
  white-space: nowrap;
  padding-top: 3px;
}

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

.exp-desc li {
  position: relative;
  padding-left: var(--space-md);
  margin-bottom: 6px;
}

.exp-desc li::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* ─── SKILLS ─────────────────────────────────────────────────────────── */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.skill-group {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition:
    border-color var(--transition-base),
    transform var(--transition-base);
}

.skill-group:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
  background: var(--bg-overlay);
}

.skill-group-label {
  font-size: var(--size-label);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: var(--space-md);
}

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

.skill-tag {
  font-size: var(--size-label);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  background: var(--bg-overlay);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 4px 10px;
  transition:
    color var(--transition-fast),
    border-color var(--transition-fast);
}

.skill-tag:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
  background: var(--accent-subtle);
}

/* ─── PROJECTS CAROUSEL ──────────────────────────────────────────────── */
.carousel {
  position: relative;
  overflow: hidden;
  padding: 0 60px;
}

.carousel-track {
  display: flex;
  max-width: 780px;
  margin: 0 auto;
  transition: transform 500ms cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
}

/* ── Slide ───────────────────────────────────────────────────────────── */
.carousel-slide {
  flex: 0 0 100%;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  opacity: 0.4;
  transform: scale(0.92);
  transition:
    opacity 500ms cubic-bezier(0.4, 0, 0.2, 1),
    transform 500ms cubic-bezier(0.4, 0, 0.2, 1),
    border-color var(--transition-base),
    box-shadow var(--transition-base);
  cursor: default;
}

.carousel-slide.active {
  opacity: 1;
  transform: scale(1);
}

.carousel-slide.active:hover {
  border-color: var(--border-hover);
  box-shadow:
    0 20px 60px rgba(0, 0, 0, 0.5),
    0 0 0 1px var(--accent-subtle);
  background: var(--bg-overlay);
}

/* ── Image / SVG preview ─────────────────────────────────────────────── */
.project-preview {
  position: relative;
  overflow: hidden;
  height: 280px;
  background: var(--bg-overlay);
}

.project-preview img {
  width: 100%;
  height: 140%;
  object-fit: cover;
  object-position: top center;
  transition: transform 1.8s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.carousel-slide.active:hover .project-preview img {
  transform: translateY(-28%);
}

/* SVG placeholder variant */
.project-preview--svg {
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(
      ellipse at 50% 50%,
      hsla(239, 100%, 71%, 0.06) 0%,
      transparent 70%
    ),
    var(--bg-overlay);
}

.project-svg-icon {
  width: 75%;
  max-width: 320px;
  height: auto;
  opacity: 0.85;
  transition:
    opacity var(--transition-base),
    transform var(--transition-base);
}

.carousel-slide.active:hover .project-svg-icon {
  opacity: 1;
  transform: scale(1.03);
}

/* ── Badge overlay ───────────────────────────────────────────────────── */
.project-badge {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-primary);
  background: hsla(239, 100%, 71%, 0.18);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid hsla(239, 100%, 71%, 0.3);
  border-radius: 999px;
  padding: 4px 14px;
}

/* ── Project body ────────────────────────────────────────────────────── */
.project-body {
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  flex: 1;
}

.project-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-sm);
}

.project-name {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  line-height: 1.2;
}

.project-tagline {
  display: block;
  font-size: var(--size-small);
  color: var(--text-muted);
  font-weight: 400;
  margin-top: 2px;
}

.project-links {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

.project-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--border);
  color: var(--text-primary);
  transition:
    color var(--transition-fast),
    border-color var(--transition-fast),
    background var(--transition-fast),
    transform var(--transition-fast);
}

.project-link svg {
  width: 14px;
  height: 14px;
}

.project-link:hover {
  border-color: var(--accent);
  background: var(--accent-subtle);
  transform: translateY(-1px);
}

.project-problem {
  font-size: var(--size-small);
  color: var(--text-secondary);
  line-height: 1.7;
  font-weight: 300;
  flex: 1;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.tech-tag {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-subtle);
  border-radius: var(--radius-sm);
  padding: 3px 8px;
}

.project-metric {
  font-size: var(--size-label);
  color: var(--text-muted);
  font-weight: 400;
  padding-top: var(--space-sm);
  border-top: 1px solid var(--border);
}

.project-metric strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* ── Arrow navigation buttons ────────────────────────────────────────── */
.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  margin: 0 var(--space-xs);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-surface);
  backdrop-filter: blur(102px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    color var(--transition-fast),
    border-color var(--transition-fast),
    background var(--transition-fast),
    transform var(--transition-fast);
}

.carousel-btn svg {
  width: 20px;
  height: 20px;
}

.carousel-btn--prev {
  left: 0;
}

.carousel-btn--next {
  right: 0;
}

.carousel-btn:hover {
  color: var(--text-primary);
  border-color: var(--accent);
  background: var(--accent-subtle);
  transform: translateY(-50%) scale(1.08);
}

.carousel-btn:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 3px;
}

/* ── Dot indicators ──────────────────────────────────────────────────── */
.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin: var(--space-lg) 0px var(--space-xs);
}

.carousel-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: transparent;
  cursor: pointer;
  transition:
    background var(--transition-fast),
    border-color var(--transition-fast),
    transform var(--transition-fast);
}

.carousel-dot:hover {
  border-color: var(--accent);
  transform: scale(1.2);
}

.carousel-dot.active {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
}

.carousel-dot:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 3px;
}

/* ─── CONTACT ─────────────────────────────────────────────────────────── */
#contact {
  text-align: center;
}

.contact-wrapper {
  max-width: 560px;
  margin: 0 auto;
}

.contact-body {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.75;
  font-weight: 300;
  margin-bottom: var(--space-xl);
}

.contact-body strong {
  color: var(--text-primary);
  font-weight: 500;
}

.contact-email {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  padding: 16px 32px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-xl);
  transition:
    border-color var(--transition-base),
    background var(--transition-base),
    transform var(--transition-fast);
}

.contact-email:hover {
  border-color: var(--border-hover);
  background: var(--bg-overlay);
  transform: translateY(-2px);
}

.contact-email:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 4px;
}

.contact-links {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
}

.contact-link {
  font-size: var(--size-small);
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  text-transform: uppercase;
  transition: color var(--transition-fast);
}

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

/* ─── FOOTER ──────────────────────────────────────────────────────────── */
footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: var(--space-lg) var(--space-xl);
  border-top: 1px solid var(--border);
  font-size: var(--size-label);
  color: var(--text-muted);
  letter-spacing: 0.06em;
}

.footer-content {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.heart-icon {
  width: 14px;
  height: 14px;
  color: var(--accent);
  animation: heartbeat 2.5s ease-in-out infinite;
}

@keyframes heartbeat {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.15);
  }
}

/* ─── DIVIDER ─────────────────────────────────────────────────────────── */
.section-divider {
  height: 1px;
  background: linear-gradient(
    to right,
    transparent,
    var(--border),
    transparent
  );
  margin: 0 var(--space-xl);
  position: relative;
  z-index: 1;
}

/* ─── BACK TO TOP ────────────────────────────────────────────────────── */
.back-to-top {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  z-index: 90;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition:
    opacity var(--transition-base),
    transform var(--transition-base),
    visibility var(--transition-base),
    border-color var(--transition-fast),
    background var(--transition-fast);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  border-color: var(--accent);
  background: var(--accent-subtle);
  transform: translateY(-4px);
}

.back-to-top:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

.back-to-top svg {
  width: 20px;
  height: 20px;
}

/* ─── RESPONSIVE ──────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  nav {
    padding: var(--space-md) var(--space-md);
  }

  .nav-links {
    gap: var(--space-md);
  }

  .section {
    padding: var(--space-2xl) var(--space-lg);
  }

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

  .about-stats {
    grid-template-columns: 1fr 1fr;
  }

  .carousel {
    padding: 0 50px;
  }

  .project-preview {
    height: 240px;
  }

  .exp-content {
    padding: var(--space-md);
  }

  .section-divider {
    margin: 0 var(--space-md);
  }

  .back-to-top {
    bottom: var(--space-md);
    right: var(--space-md);
  }
}

/* ─── MOBILE NAV: show hamburger, hide desktop links ─────────────────── */
@media (max-width: 640px) {
  .nav-links {
    display: none;
  }

  .nav-hamburger {
    display: flex;
  }

  .nav-drawer {
    display: flex;
  }

  /* hero tightening */
  #hero {
    padding: var(--space-xl) var(--space-lg);
  }

  .hero-avatar {
    width: 120px;
    height: 120px;
  }

  /* Stack hero actions vertically on mobile */
  .hero-actions {
    grid-template-columns: 1fr;
    justify-items: center;
    max-width: 340px;
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions-divider {
    display: none;
  }

  .btn-primary,
  .btn-ghost {
    width: 100%;
    text-align: center;
  }

  /* section cards tighter on small screens */
  .stat-card {
    padding: var(--space-md) var(--space-sm);
  }

  .stat-number {
    font-size: 1.8rem;
  }

  .skills-grid {
    grid-template-columns: repeat(1, 1fr);
  }

  .carousel {
    padding: 0 40px;
  }

  .carousel-btn {
    width: 36px;
    height: 36px;
  }

  .carousel-btn svg {
    width: 16px;
    height: 16px;
  }

  .project-preview {
    height: 200px;
  }

  .project-body {
    padding: var(--space-md);
  }

  .skill-group {
    padding: var(--space-md);
  }

  .contact-email {
    font-size: 1rem;
    padding: 14px 20px;
    word-break: break-all;
  }

  .exp-item {
    grid-template-columns: 16px 1fr;
    gap: var(--space-sm);
  }

  .experience-list::before {
    left: 8px;
  }

  .exp-dot {
    width: 9px;
    height: 9px;
  }

  .exp-header {
    flex-direction: column;
    gap: var(--space-xs);
  }

  /* footer */
  footer {
    padding: var(--space-md);
    font-size: 0.7rem;
  }
}

/* ─── LARGE SCREENS: cap hero width ──────────────────────────────────── */
@media (min-width: 1400px) {
  .section {
    max-width: 1200px;
  }

  nav {
    max-width: 100%;
  }
}

/* ─── REDUCED MOTION ──────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }

  .hero-avatar {
    opacity: 1;
    transform: none;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}