/* ===== Shared design tokens & reset ===== */
:root {
  --color-base: #fafafa;
  --color-surface: #f0f0ec;
  --color-surface-alt: #e6e6e1;
  --color-text: #0a0a0a;
  --color-text-soft: #63635c;
  --color-line: rgba(10, 10, 10, 0.08);
  --color-line-strong: #8f8f86;
  --color-signal: #ff1e1e;
  --color-signal-bright: #ff4545;
  --font-display: "IBM Plex Mono", monospace;
  --font-body: "IBM Plex Sans", sans-serif;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1.25rem;
  --space-lg: 2rem;
  --space-xl: 3.5rem;
  --space-2xl: 5.5rem;
  --container-width: 1180px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-base);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.6;
}

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

a {
  color: inherit;
}

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

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

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

.section-head {
  margin-bottom: var(--space-lg);
  max-width: 46rem;
}

.section-heading {
  margin: 0 0 var(--space-sm);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.section-lede {
  margin: 0 0 var(--space-md);
  color: var(--color-text-soft);
  font-size: 1.05rem;
  max-width: 52ch;
}

.eyebrow {
  margin: 0 0 var(--space-xs);
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-soft);
}

.mono-figure {
  font-family: var(--font-display);
  font-variant-numeric: tabular-nums;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.75em 1.35em;
  border: 1px solid var(--color-text);
  background: transparent;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}

.btn-primary {
  background: var(--color-signal);
  border-color: var(--color-signal);
  color: #0a0a0a;
}

.btn-primary:hover {
  background: var(--color-signal-bright);
  border-color: var(--color-signal-bright);
}

.btn-outline {
  background: transparent;
}

.btn-outline:hover {
  background: var(--color-text);
  color: var(--color-base);
}

.btn-arrow {
  display: inline-block;
  transition: transform 0.15s ease;
}

.btn:hover .btn-arrow {
  transform: translateX(3px);
}

/* Stamps */
.stamp {
  display: inline-block;
  padding: 0.25em 0.55em;
  border: 1.5px solid currentColor;
  font-family: var(--font-display);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  line-height: 1.2;
}

.stamp-agri {
  color: #1a6b3c;
  border-color: #1a6b3c;
}

.stamp-health {
  color: #0b4f8a;
  border-color: #0b4f8a;
}

.stamp-edu {
  color: #7a3e00;
  border-color: #7a3e00;
}

.sector-key {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* Skip link & scroll progress */
.skip-link {
  position: absolute;
  left: 1rem;
  top: -100px;
  z-index: 100;
  padding: 0.6rem 1rem;
  background: var(--color-text);
  color: var(--color-base);
  font-family: var(--font-display);
  font-size: 0.85rem;
  text-decoration: none;
}

.skip-link:focus {
  top: 1rem;
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: var(--color-signal);
  z-index: 60;
  pointer-events: none;
}

/* ===== Canonical shell: header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: #fff;
  border-bottom: 1px solid var(--color-text);
}

.header-bar {
  max-width: 1600px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-block: 0.75rem;
}

.site-logo {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  text-decoration: none;
  line-height: 1.15;
  color: var(--color-text);
}

.site-logo .logo-year {
  display: block;
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--color-text-soft);
}

.nav-toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border: 1px solid var(--color-text);
  background: #fff;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.nav-toggle-bar {
  display: block;
  width: 1.15rem;
  height: 2px;
  background: var(--color-text);
}

.main-nav-list {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.main-nav a {
  position: relative;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--color-text);
  padding-bottom: 0.15rem;
}

.main-nav a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: var(--color-signal);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.15s ease;
}

.main-nav a:not(.btn):hover::after,
.main-nav a:not(.btn).is-active::after {
  transform: scaleX(1);
}

.main-nav a.nav-cta {
  padding: 0.55em 1.1em;
}

@media (max-width: 860px) {
  .nav-toggle {
    display: inline-flex;
  }

  .main-nav {
    position: fixed;
    top: 57px;
    left: 30%;
    right: 0;
    bottom: 0;
    background: #fff;
    border-left: 1px solid var(--color-text);
    padding: 1.25rem;
    transform: translateX(105%);
    transition: transform 0.25s ease;
    overflow-y: auto;
    z-index: 40;
  }

  .main-nav.is-open {
    transform: translateX(0);
  }

  .main-nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .main-nav-list a {
    display: block;
    padding: 0.9rem 0;
    border-bottom: 1px solid var(--color-line);
  }

  .main-nav a.nav-cta {
    margin-top: 1rem;
    text-align: center;
  }
}

@media (max-width: 420px) {
  .main-nav {
    left: 0;
  }
}

/* ===== Canonical shell: footer ===== */
#footer {
  padding-block: 1.25rem;
  border-top: 1px solid var(--color-line);
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem 2rem;
}

.footer-departments {
  margin: 0.5rem 0 0;
  color: var(--color-text-soft);
  font-family: var(--font-display);
  font-size: 0.78rem;
  line-height: 1.5;
}

.footer-meta {
  color: var(--color-text-soft);
  font-family: var(--font-display);
  font-size: 0.78rem;
  line-height: 1.5;
  text-align: right;
}

.footer-meta p {
  margin: 0 0 0.35rem;
}

@media (max-width: 640px) {
  .footer-meta {
    text-align: left;
  }
}

/* Reveal */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

[data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .btn-arrow,
  .main-nav,
  .main-nav a:not(.btn)::after {
    transition: none;
  }
}

/* Page header shared */
.page-header {
  padding-top: 3.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--color-line-strong);
}

.page-header .section-heading {
  margin-bottom: 0.75rem;
}

/* ===== Register ===== */
.register-layout {
  max-width: 760px;
  margin-inline: auto;
}

#register-form {
  display: block;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-bottom: 1.25rem;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1.25rem;
}

.form-row .form-field {
  margin-bottom: 0;
}

.form-field label,
.form-legend {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.form-field input,
.form-field select {
  width: 100%;
  padding: 0.75em 0.9em;
  border: 1px solid var(--color-line-strong);
  background: var(--color-surface);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 1rem;
}

.form-field input:focus,
.form-field select:focus {
  outline: 2px solid var(--color-signal);
  outline-offset: 1px;
}

.form-fieldset {
  margin: 0 0 1.5rem;
  padding: 0;
  border: 0;
}

.form-legend {
  margin-bottom: 0.35rem;
  padding: 0;
}

.form-hint {
  margin: 0 0 1rem;
  color: var(--color-text-soft);
  font-size: 0.9rem;
}

.track-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.track-option {
  position: relative;
  display: block;
  padding: 1.1rem 2.5rem 1.1rem 1.1rem;
  border: 1px solid var(--color-line-strong);
  background: #fff;
  cursor: pointer;
}

.track-option:has(input:checked) {
  border-color: var(--color-signal);
  background: var(--color-surface);
}

.track-option input {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 1.15em;
  height: 1.15em;
  accent-color: var(--color-signal);
  cursor: pointer;
}

.track-option-title {
  display: block;
  margin-bottom: 0.35rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
}

.track-option-desc {
  display: block;
  color: var(--color-text-soft);
  font-size: 0.88rem;
}

.form-submit-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-top: 0.5rem;
}

.form-error {
  display: none;
  margin: 0;
  color: var(--color-signal);
  font-family: var(--font-display);
  font-size: 0.88rem;
}

.form-error.is-visible {
  display: block;
}

.confirmation-panel {
  display: none;
  padding: 2.5rem 2rem;
  border: 2px solid var(--color-signal);
  background: var(--color-surface);
  text-align: center;
}

.confirmation-panel.is-visible {
  display: block;
}

.confirmation-panel .stamp {
  color: var(--color-signal);
  border-color: var(--color-signal);
  transform: rotate(-2deg);
  margin-bottom: 1.25rem;
}

.confirmation-panel h2 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: 1.6rem;
}

.confirmation-panel > p {
  margin: 0 auto 1.5rem;
  max-width: 42ch;
  color: var(--color-text-soft);
}

.confirmation-summary {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.4rem 1rem;
  margin: 0 auto 1.75rem;
  max-width: 28rem;
  text-align: left;
}

.confirmation-summary dt {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-soft);
}

.confirmation-summary dd {
  margin: 0;
  font-weight: 500;
}

@media (max-width: 640px) {
  .form-row,
  .track-options {
    grid-template-columns: 1fr;
  }
}