/* personal site — keep it simple */

:root {
  --bg: #0c0c0c;
  --bg-soft: #111;
  --bg-card: #141414;
  --border: #222;
  --text: #ddd;
  --muted: #777;
  --dim: #444;
  --bright: #f2f2f2;
  --font: system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: ui-monospace, 'Cascadia Code', 'Consolas', monospace;
  --nav-h: 52px;
  --wrap: min(640px, 88vw);
  --ease: cubic-bezier(0.25, 0.1, 0.25, 1);
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 20px;
  --radius-pill: 999px;
}

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

html {
  scroll-behavior: auto;
  scroll-padding-top: var(--nav-h);
}

html.smooth-scroll {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
}

body.is-loading {
  overflow: hidden;
}

body.is-loading .nav,
body.is-loading .page-stack {
  visibility: hidden;
}

a {
  color: var(--bright);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--dim);
  transition: text-decoration-color 0.2s;
}

a:hover {
  text-decoration-color: var(--bright);
}

.wrap {
  width: var(--wrap);
  margin-inline: auto;
  padding-inline: 0;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* loader — quick, nothing fancy */
.loader {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  transition: opacity 0.5s ease, visibility 0.5s;
}

.loader.done {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-text {
  font-family: var(--mono);
  font-size: 1.25rem;
  color: var(--muted);
  letter-spacing: 0.05em;
  animation: loaderPulse 1s ease-in-out infinite;
}

@keyframes loaderPulse {
  50% { opacity: 0.35; }
}

/* page transition */
.page-flip {
  position: fixed;
  inset: 0;
  z-index: 900;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
}

.page-flip.active {
  opacity: 1;
  visibility: visible;
}

.page-flip-sheet {
  position: absolute;
  inset: 0;
  background: var(--bg-soft);
  transform: translateX(100%);
}

.page-flip.active .page-flip-sheet {
  animation: pageSlide 0.55s var(--ease) forwards;
}

@keyframes pageSlide {
  0% { transform: translateX(100%); opacity: 0.8; }
  100% { transform: translateX(-100%); opacity: 0; }
}

.page-stack {
  scroll-snap-type: y proximity;
}

.page {
  scroll-snap-align: start;
}

.page + .page {
  border-top: 1px solid var(--border);
}

/* reveal — subtle, no blur */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.55s var(--ease), transform 0.55s var(--ease);
  transition-delay: calc(var(--d, 0) * 0.07s);
}

.page-visible .reveal {
  opacity: 1;
  transform: translateY(0);
}

/* nav */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  padding: 0 max(1rem, 4vw);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
}

.nav-logo {
  font-family: var(--mono);
  font-size: 0.95rem;
  color: var(--bright);
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.9rem;
  color: var(--muted);
  text-decoration: none;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-pill);
  transition: background 0.2s, color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--bright);
  background: var(--bg-card);
}

.nav-toggle {
  display: none;
  position: absolute;
  right: max(1rem, 4vw);
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  height: 1.5px;
  background: var(--text);
  transition: transform 0.25s, opacity 0.25s;
}

.nav-toggle.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* hero */
.hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-h) + 3rem) 0 4rem;
}

.hero-wrap {
  width: var(--wrap);
  margin-inline: auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-title {
  font-size: clamp(1.75rem, 5vw, 2.25rem);
  font-weight: 600;
  color: var(--bright);
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.hero-lead {
  font-size: 1.05rem;
  color: var(--muted);
  margin-bottom: 1.25rem;
}

.hero-body {
  color: var(--muted);
  font-size: 0.975rem;
  max-width: 54ch;
  margin-bottom: 1.75rem;
  margin-inline: auto;
  text-align: center;
}

.hero-links {
  font-size: 0.9rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.65rem;
}

.pill-link {
  display: inline-block;
  padding: 0.45rem 1rem;
  color: var(--text);
  text-decoration: none;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  transition: border-color 0.2s, background 0.2s;
}

.pill-link:hover {
  border-color: var(--muted);
  background: var(--bg-soft);
  text-decoration: none;
}

/* sections */
.section {
  padding: clamp(3.5rem, 8vw, 5rem) 0;
}

.section-heading {
  font-size: 1rem;
  font-weight: 600;
  color: var(--bright);
  margin-bottom: 1.5rem;
  font-family: var(--mono);
  text-transform: lowercase;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.75rem;
  width: 100%;
  max-width: 520px;
}

.prose p {
  color: var(--muted);
  font-size: 0.975rem;
  margin-bottom: 1rem;
  max-width: 54ch;
  margin-inline: auto;
  text-align: center;
}

.prose p:last-child {
  margin-bottom: 0;
}

.stack-list {
  list-style: none;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem 1.25rem;
}

.stack-list li {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--dim);
  padding: 0.35rem 0.85rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
}

.stack-list li::before {
  content: none;
}

/* contact */
.contact-note {
  color: var(--muted);
  font-size: 0.925rem;
  max-width: 48ch;
  margin-bottom: 1.75rem;
  margin-inline: auto;
  text-align: center;
}

.contact-form {
  width: 100%;
  max-width: 480px;
  margin-inline: auto;
  text-align: center;
}

.contact-form.card {
  padding: 1.75rem 1.5rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--dim);
  margin-bottom: 0.35rem;
  text-transform: lowercase;
  text-align: center;
}

.optional {
  color: var(--dim);
  font-weight: 400;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.7rem 0.9rem;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: inherit;
  font-size: 16px;
  transition: border-color 0.2s, background 0.2s;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--dim);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--muted);
  background: var(--bg);
}

.form-group textarea {
  resize: vertical;
  min-height: 110px;
}

.honeypot {
  position: absolute;
  left: -9999px;
  opacity: 0;
  pointer-events: none;
}

.btn-submit {
  display: inline-block;
  margin-top: 0.5rem;
  padding: 0.65rem 1.5rem;
  background: var(--bright);
  color: var(--bg);
  border: none;
  border-radius: var(--radius-pill);
  font-family: var(--mono);
  font-size: 0.85rem;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.2s;
}

.btn-submit:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.btn-submit:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.form-status {
  margin-top: 1rem;
  font-size: 0.875rem;
  color: var(--muted);
  font-family: var(--mono);
  text-align: center;
  padding: 0.65rem 1rem;
  border-radius: var(--radius);
  background: var(--bg-soft);
  border: 1px solid var(--border);
}

.form-status[hidden] {
  display: none;
}

.form-status.success {
  color: var(--bright);
}

.form-status.error {
  color: var(--muted);
}

/* mobile */
@media (max-width: 600px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 1rem;
    right: 1rem;
    flex-direction: column;
    gap: 0.35rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.65rem;
    transform: translateY(-110%);
    opacity: 0;
    transition: transform 0.3s var(--ease), opacity 0.3s;
    pointer-events: none;
  }

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

  .nav-links a {
    display: block;
    padding: 0.75rem 1rem;
    font-size: 0.95rem;
    text-align: center;
    border-radius: var(--radius-sm);
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: calc(var(--nav-h) + 2rem);
  }
}

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

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