/* ==========================================================================
   Rajeev Edmonds — personal site
   Base / reset
   ========================================================================== */

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

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--step-0);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background: var(--color-bg);
  transition: background-color var(--duration-theme) var(--ease), color var(--duration-theme) var(--ease);
}

img, svg { display: block; max-width: 100%; }
img { height: auto; }

h1, h2, h3, h4 { line-height: var(--leading-tight); margin: 0; font-weight: 700; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
input, textarea { font: inherit; color: inherit; }

::selection { background: var(--color-accent); color: var(--color-accent-contrast); }

/* Visible, high-contrast focus ring everywhere — never removed, only restyled */
:focus-visible {
  outline: 2.5px solid var(--color-focus-ring);
  outline-offset: 3px;
  border-radius: 2px;
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-sm);
  z-index: 1000;
  background: var(--color-accent);
  color: var(--color-accent-contrast);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  font-weight: 600;
  transition: top var(--duration-base) var(--ease);
}
.skip-link:focus {
  top: var(--space-sm);
}

.container {
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: var(--space-md);
}

@media (min-width: 640px) {
  .container { padding-inline: var(--space-xl); }
}

.section {
  padding-block: var(--space-2xl);
  border-top: 1px solid var(--color-border);
}

.section--flush { border-top: 0; }

.section__head {
  max-width: 44rem;
  margin-bottom: var(--space-xl);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}
.eyebrow::before { content: '['; opacity: 0.6; }
.eyebrow::after { content: ']'; opacity: 0.6; }

.section__title {
  font-size: var(--step-3);
  letter-spacing: -0.01em;
  margin-bottom: var(--space-sm);
}

.section__lead {
  font-size: var(--step-1);
  color: var(--color-text-muted);
  max-width: var(--measure);
  line-height: var(--leading-snug);
}

/* ==========================================================================
   Header / navigation
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.nav {
  padding-block: var(--space-sm);
}

.nav__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  width: 100%;
}

.nav__brand {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--step-0);
  letter-spacing: -0.01em;
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
  border-radius: var(--radius-sm);
}
.nav__brand .dot { color: var(--color-accent); }

.nav__list {
  display: none;
  align-items: center;
  gap: var(--space-lg);
  font-size: var(--step--1);
  font-weight: 500;
}

.nav__link {
  position: relative;
  padding-block: var(--space-2xs);
  color: var(--color-text-muted);
  transition: color var(--duration-fast) var(--ease);
}
.nav__link::after {
  content: '';
  position: absolute;
  left: 0; right: 100%;
  bottom: -2px;
  height: 2px;
  background: var(--color-accent);
  transition: right var(--duration-base) var(--ease);
}
.nav__link:hover,
.nav__link:focus-visible { color: var(--color-text); }
.nav__link:hover::after,
.nav__link:focus-visible::after { right: 0; }

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  transition: border-color var(--duration-fast) var(--ease), background-color var(--duration-fast) var(--ease);
}
.theme-toggle:hover { border-color: var(--color-border-strong); background: var(--color-surface); }
.theme-toggle svg { width: 1.15rem; height: 1.15rem; }
.theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

.nav__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}
.nav__toggle svg { width: 1.25rem; height: 1.25rem; }
.nav__toggle .icon-close { display: none; }

.nav--open .nav__toggle .icon-menu { display: none; }
.nav--open .nav__toggle .icon-close { display: block; }

.nav__panel {
  display: none;
  flex-direction: column;
  gap: var(--space-2xs);
  padding-block: var(--space-sm) var(--space-md);
  border-top: 1px solid var(--color-border);
  font-family: var(--font-mono);
  font-size: var(--step-0);
}
.nav--open .nav__panel { display: flex; }
.nav__panel .nav__link { padding-block: var(--space-xs); }
.nav__panel .nav__link::after { display: none; }

@media (min-width: 860px) {
  .nav__toggle { display: none; }
  .nav__panel { display: none !important; }
  .nav__list { display: flex; }
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  font-weight: 600;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
  transition: transform var(--duration-fast) var(--ease), background-color var(--duration-fast) var(--ease), border-color var(--duration-fast) var(--ease);
}
.btn svg { width: 1rem; height: 1rem; transition: transform var(--duration-fast) var(--ease); }
.btn:hover svg { transform: translateX(3px); }
.btn:active { transform: translateY(1px); }

.btn--primary {
  background: var(--color-accent);
  color: var(--color-accent-contrast);
}
.btn--primary:hover { background: var(--color-accent-strong); }

.btn--ghost {
  border-color: var(--color-border-strong);
  color: var(--color-text);
}
.btn--ghost:hover { border-color: var(--color-accent); color: var(--color-accent); }

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  padding-block: var(--space-2xl) var(--space-2xl);
}

.hero__grid {
  display: grid;
  gap: var(--space-2xl);
  align-items: center;
}

@media (min-width: 900px) {
  .hero__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
  }
}

.hero__eyebrow {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--color-signal);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.hero__title {
  font-size: var(--step-5);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}
.hero__title span { color: var(--color-accent); }

.hero__lead {
  font-size: var(--step-1);
  color: var(--color-text-muted);
  max-width: 34rem;
  line-height: var(--leading-snug);
  margin-bottom: var(--space-lg);
}

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

/* --- signature element: a small "terminal" that types out a whoami --- */

.terminal {
  background: var(--color-code-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}

.terminal__bar {
  display: flex;
  align-items: center;
  gap: var(--space-2xs);
  padding: var(--space-sm) var(--space-md);
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.terminal__dot {
  width: 0.65rem; height: 0.65rem;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
}
.terminal__title {
  margin-left: var(--space-xs);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: rgba(255, 255, 255, 0.65);
}

.terminal__body {
  padding: var(--space-lg) var(--space-md);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--color-code-text);
  min-height: 9.5rem;
}

.terminal__line { margin-bottom: var(--space-xs); }
.terminal__line--spaced { margin-top: var(--space-md); }
.terminal__prompt { color: var(--color-signal); }
.terminal__prompt::after { content: ' $ '; color: rgba(255,255,255,0.3); }
.terminal__output { color: var(--color-code-text); opacity: 0.92; }
.terminal__muted { color: rgba(255,255,255,0.35); }

.terminal__cursor {
  display: inline-block;
  width: 0.55em;
  height: 1em;
  background: var(--color-signal);
  vertical-align: text-bottom;
  margin-left: 2px;
  animation: blink 1s step-end infinite;
}
@media (prefers-reduced-motion: reduce) {
  .terminal__cursor { animation: none; }
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* ==========================================================================
   About
   ========================================================================== */

.about__grid {
  display: grid;
  gap: var(--space-xl);
}

@media (min-width: 900px) {
  .about__grid {
    grid-template-columns: 15rem 1fr;
    gap: var(--space-2xl);
  }
}

.about__photo-wrap {
  position: relative;
  width: 100%;
  max-width: 15rem;
}

.about__photo {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.about__photo-tag {
  position: absolute;
  bottom: -0.75rem;
  left: -0.75rem;
  background: var(--color-accent);
  color: var(--color-accent-contrast);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  font-weight: 700;
  padding: 0.4rem 0.7rem;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}

.about__bio p {
  color: var(--color-text-muted);
  max-width: var(--measure);
  line-height: var(--leading-normal);
}
.about__bio p + p { margin-top: var(--space-sm); }
.about__bio strong { color: var(--color-text); font-weight: 600; }

.about__note {
  margin-top: var(--space-lg);
  padding: var(--space-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-signal);
  border-radius: var(--radius-md);
}

.about__note-label {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  font-weight: 700;
  color: var(--color-signal);
  margin-bottom: var(--space-2xs);
}

.about__note p {
  color: var(--color-text-muted);
  line-height: var(--leading-normal);
}

/* ==========================================================================
   Focus areas
   ========================================================================== */

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

@media (min-width: 700px) {
  .focus-grid { grid-template-columns: repeat(3, 1fr); }
}

.focus-card {
  padding: var(--space-lg) var(--space-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color var(--duration-fast) var(--ease), transform var(--duration-fast) var(--ease);
}
.focus-card:hover {
  border-color: var(--color-border-strong);
  transform: translateY(-2px);
}

.focus-card__icon {
  width: 2.75rem;
  height: 2.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-accent) 14%, transparent);
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}
.focus-card__icon svg { width: 1.4rem; height: 1.4rem; }

.focus-card__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-text-faint);
  margin-bottom: var(--space-2xs);
  letter-spacing: 0.02em;
}

.focus-card__title {
  font-size: var(--step-1);
  margin-bottom: var(--space-xs);
}

.focus-card__desc {
  color: var(--color-text-muted);
  font-size: var(--step--1);
  line-height: var(--leading-normal);
}

/* ==========================================================================
   Blog highlight
   ========================================================================== */

.blog-card {
  display: grid;
  gap: var(--space-lg);
  padding: var(--space-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}

@media (min-width: 780px) {
  .blog-card {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

.blog-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, color-mix(in srgb, var(--color-accent) 6%, transparent), transparent 60%);
  pointer-events: none;
}

.blog-card__kicker {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--color-accent);
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.blog-card__title {
  font-size: var(--step-2);
  margin-bottom: var(--space-sm);
}

.blog-card__desc {
  color: var(--color-text-muted);
  max-width: 38rem;
  line-height: var(--leading-normal);
}

/* ==========================================================================
   Contact
   ========================================================================== */

.contact__grid {
  display: grid;
  gap: var(--space-2xl);
}

@media (min-width: 900px) {
  .contact__grid { grid-template-columns: 1fr 1.2fr; }
}

.contact__info-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.contact__info-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
}

.contact__info-icon {
  flex: 0 0 auto;
  width: 2.5rem;
  height: 2.5rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  color: var(--color-accent);
}
.contact__info-icon svg { width: 1.15rem; height: 1.15rem; }

.contact__info-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-faint);
  margin-bottom: 0.15rem;
}

.contact__info-value {
  font-weight: 600;
}
.contact__info-value a:hover,
.contact__info-value a:focus-visible { color: var(--color-accent); }

.form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.form__row {
  display: grid;
  gap: var(--space-md);
}
@media (min-width: 560px) {
  .form__row--split { grid-template-columns: 1fr 1fr; }
}

.form__field { display: flex; flex-direction: column; gap: var(--space-2xs); }

.form__label {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  font-weight: 600;
  color: var(--color-text-muted);
}
.form__label .req { color: var(--color-accent); }

.form__input,
.form__textarea {
  padding: 0.8rem 0.9rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-strong);
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color var(--duration-fast) var(--ease), box-shadow var(--duration-fast) var(--ease);
}
.form__input::placeholder,
.form__textarea::placeholder { color: var(--color-text-faint); }
.form__input:focus,
.form__textarea:focus {
  border-color: var(--color-signal);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-signal) 20%, transparent);
}
.form__textarea { resize: vertical; min-height: 8.5rem; }

.form__input[aria-invalid="true"],
.form__textarea[aria-invalid="true"] {
  border-color: var(--color-accent);
}
.form__input[aria-invalid="true"]:focus,
.form__textarea[aria-invalid="true"]:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-accent) 20%, transparent);
}

.form__error {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--color-accent);
}
.form__error:empty { display: none; }

.form__hint {
  font-size: var(--step--1);
  color: var(--color-text-faint);
}

.form__status {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  padding: var(--space-sm);
  border-radius: var(--radius-sm);
  display: none;
}
.form__status[data-state="success"] {
  display: block;
  background: color-mix(in srgb, var(--color-signal) 14%, transparent);
  color: var(--color-signal);
  border: 1px solid color-mix(in srgb, var(--color-signal) 35%, transparent);
}
.form__status[data-state="error"] {
  display: block;
  background: color-mix(in srgb, var(--color-accent) 14%, transparent);
  color: var(--color-accent);
  border: 1px solid color-mix(in srgb, var(--color-accent) 35%, transparent);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-2xl) var(--space-lg);
  background: var(--color-surface);
}

.footer__grid {
  display: grid;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

@media (min-width: 700px) {
  .footer__grid {
    grid-template-columns: 1.4fr 1fr 1fr;
  }
}

.footer__brand {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--step-1);
  margin-bottom: var(--space-sm);
}
.footer__brand .dot { color: var(--color-accent); }

.footer__desc {
  color: var(--color-text-muted);
  max-width: 26rem;
  font-size: var(--step--1);
  line-height: var(--leading-normal);
  margin-bottom: var(--space-md);
}

.footer__social {
  display: flex;
  gap: var(--space-sm);
}
.footer__social a {
  width: 2.25rem;
  height: 2.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: border-color var(--duration-fast) var(--ease), color var(--duration-fast) var(--ease);
}
.footer__social a:hover,
.footer__social a:focus-visible { border-color: var(--color-accent); color: var(--color-accent); }
.footer__social svg { width: 1.05rem; height: 1.05rem; }

.footer__heading {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  font-weight: 700;
  color: var(--color-text-faint);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}

.footer__list { display: flex; flex-direction: column; gap: var(--space-xs); }
.footer__list a { color: var(--color-text-muted); font-size: var(--step--1); }
.footer__list a:hover,
.footer__list a:focus-visible { color: var(--color-accent); }

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
  font-size: var(--step--1);
  color: var(--color-text-faint);
}

.back-to-top {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3xs);
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--color-text-muted);
}
.back-to-top svg { width: 1rem; height: 1rem; }
.back-to-top:hover,
.back-to-top:focus-visible { color: var(--color-accent); }

/* ==========================================================================
   Reveal-on-scroll (progressive enhancement; content is visible without JS)
   ========================================================================== */

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; transition: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ==========================================================================
   Prose (long-form content — privacy policy, etc.)
   ========================================================================== */

.prose { max-width: var(--measure); }
.prose h2 {
  font-size: var(--step-1);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-2xs);
}
.prose h2:first-child { margin-top: 0; }
.prose p { color: var(--color-text-muted); line-height: var(--leading-normal); }
.prose p + p,
.prose h2 + p { margin-top: var(--space-sm); }
.prose a { color: var(--color-signal); text-decoration: underline; text-underline-offset: 0.15em; }
.prose a:hover, .prose a:focus-visible { color: var(--color-accent); }
.prose__updated {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--color-text-faint);
  margin-bottom: var(--space-lg);
}

/* ==========================================================================
   Error page (404)
   ========================================================================== */

.error-page { text-align: center; padding-block: var(--space-3xl); }
.error-page__code {
  font-family: var(--font-mono);
  font-size: var(--step-5);
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-sm);
}
.error-page__title { font-size: var(--step-2); margin-bottom: var(--space-sm); }
.error-page__lead {
  color: var(--color-text-muted);
  max-width: var(--measure);
  margin: 0 auto var(--space-lg);
}

/* ==========================================================================
   Confirmation page (post-contact-form redirect)
   ========================================================================== */

.confirm-page { text-align: center; padding-block: var(--space-3xl); }
.confirm-page__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-md);
  border-radius: 50%;
  background: color-mix(in srgb, var(--color-signal) 14%, transparent);
  color: var(--color-signal);
}
.confirm-page__icon svg { width: 30px; height: 30px; }
.confirm-page__title { font-size: var(--step-2); margin-bottom: var(--space-sm); }
.confirm-page__lead {
  color: var(--color-text-muted);
  max-width: var(--measure);
  margin: 0 auto var(--space-lg);
}