*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, fill 0.3s ease, stroke 0.3s ease;
}

:root {
  --color-bg: #ffffff;
  --color-text: #000000;
  --color-border: #000000;
  --color-tag-bg: #000000;
  --color-tag-text: #ffffff;
  --color-muted: #666666;
  --max-width: 720px;
  --transition: 0.3s ease;
  --font-body: "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", "Courier New", monospace;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-bg: #0a0a0a;
    --color-text: #ffffff;
    --color-border: #ffffff;
    --color-tag-bg: #ffffff;
    --color-tag-text: #000000;
    --color-muted: #999999;
  }
}

[data-theme="dark"] {
  --color-bg: #0a0a0a;
  --color-text: #ffffff;
  --color-border: #ffffff;
  --color-tag-bg: #ffffff;
  --color-tag-text: #000000;
  --color-muted: #999999;
}

html {
  font-size: 100%;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.65;
  transition: background-color var(--transition), color var(--transition);
  min-height: 100vh;
  cursor: none;
}

a, button, input, textarea, select {
  cursor: none;
}

/* ---- Custom cursor ---- */

.cursor {
  width: 12px;
  height: 12px;
  background: var(--color-text);
  border-radius: 50%;
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 9999;
  transition: background-color var(--transition), transform 0.15s ease;
  transform: translate(-50%, -50%);
}

.cursor--hidden {
  opacity: 0;
}

.cursor--hover {
  transform: translate(-50%, -50%) scale(2.5);
}

/* ---- Layout ---- */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 1.5rem;
  background: var(--color-bg);
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  transition: background-color var(--transition), border-color var(--transition);
}

[data-theme="dark"] .nav {
  border-bottom-color: rgba(255, 255, 255, 0.1);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .nav {
    border-bottom-color: rgba(255, 255, 255, 0.1);
  }
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
}

.nav-link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  color: var(--color-muted);
  text-decoration: none;
  transition: color var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-text);
}

.nav-separator {
  color: var(--color-muted);
  font-size: 0.8rem;
  user-select: none;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 1.5rem 4rem;
}

/* ---- Header / Profile ---- */

.header {
  text-align: left;
  padding: 0.5rem 0 3rem;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 3rem;
}

.profile-pic {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--color-border);
  margin-bottom: 1.5rem;
  transition: border-color var(--transition);
}

.header h1 {
  font-size: 2.8rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.header .subtitle {
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
}

/* ---- Theme toggle ---- */

.theme-toggle {
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: none;
  transition: background-color var(--transition), border-color var(--transition);
  font-size: 0.9rem;
  line-height: 1;
  padding: 0;
  flex-shrink: 0;
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--color-text);
  outline-offset: 2px;
}

.theme-toggle .icon {
  color: var(--color-text);
}

.theme-toggle .icon-sun {
  display: none;
}

/* ---- Icons ---- */

.icon {
  color: var(--color-text);
  flex-shrink: 0;
  transition: color var(--transition);
}

/* ---- Sections ---- */

.section {
  margin-bottom: 3.5rem;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-muted);
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: 1rem;
  line-height: 1.25;
}

/* ---- Cards ---- */

.card {
  background: var(--color-bg);
  border: none;
  padding: 0;
}

.card + .card {
  margin-top: 0.75rem;
}

.card p {
  color: var(--color-text);
  font-size: 0.95rem;
}

.card p + p {
  margin-top: 0.75rem;
}

/* ---- Tags ---- */

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
}

.tag {
  background: transparent;
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.4rem 0.85rem;
  border-radius: 100px;
  border: 1px solid var(--color-border);
  transition: background-color var(--transition), color var(--transition),
    border-color var(--transition);
}

.tag:hover {
  background: var(--color-tag-bg);
  color: var(--color-tag-text);
}

/* ---- Interests grid ---- */

.interests-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.interest-item {
  position: relative;
  border-radius: 4px;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--color-surface);
  display: flex;
  align-items: flex-end;
}

.interest-item img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  filter: grayscale(100%);
}

.interest-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.55) 0%, transparent 60%);
}

.interest-item span {
  position: relative;
  z-index: 1;
  padding: 1rem;
  font-family: var(--font-body);
  font-size: 1.1rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.02em;
}

/* ---- Values grid ---- */

.values-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.value-item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 1.25rem 1rem;
  text-align: left;
  transition: background-color var(--transition), border-color var(--transition);
}

.value-item .icon {
  display: block;
  margin-bottom: 0.5rem;
}

.value-title {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
  letter-spacing: -0.01em;
}

.value-desc {
  display: block;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--color-muted);
  line-height: 1.5;
  letter-spacing: 0.01em;
}

/* ---- Divider ---- */

.divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 3.5rem 0;
  transition: border-color var(--transition);
}

/* ---- Footer ---- */

.footer {
  text-align: left;
  padding: 0 0 2rem;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.02em;
}

.footer-top {
  margin-bottom: 0.75rem;
}

.footer-name {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 0;
}

.footer-role {
  margin: 0.15rem 0 0;
  color: var(--color-muted);
}

.footer-links {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  margin-bottom: 1rem;
}

.footer-links a {
  color: var(--color-text);
  text-decoration: none;
  border-bottom: 1px solid var(--color-border);
  transition: border-color var(--transition);
}

.footer-links a:hover {
  border-color: var(--color-text);
}

.footer-sep {
  color: var(--color-muted);
}

.footer-note {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.65rem;
}

/* ---- Accessibility ---- */

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

  html {
    scroll-behavior: auto;
  }
}

/* Hide custom cursor on touch devices */
@media (pointer: coarse) {
  body, a, button, input, textarea, select {
    cursor: auto;
  }

  .cursor {
    display: none;
  }
}

/* ---- Responsive ---- */

@media (min-width: 480px) {
  .nav {
    padding: 1rem 2rem;
  }

  .container {
    padding: 1.5rem 2rem 5rem;
  }

  .header {
    padding: 1rem 0 3rem;
  }

  .header h1 {
    font-size: 3.5rem;
  }

  .profile-pic {
    width: 120px;
    height: 120px;
  }
}