/* ═══════════════════════════════════════════════════════
   NEOBIOME RESEARCH — styles.css
   ═══════════════════════════════════════════════════════ */

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

/* ── Custom Properties ── */
:root {
  /* Brand palette */
  --forest:      #3C5E3C;
  --sage:        #8FAF8C;
  --olive:       #677C0F;
  --spring:      #9AA84D;
  --graphite:    #58545A;
  --moss:        #C9D9C4;
  --gold:        #BB8F4E;
  --ivory:       #F6F4EF;
  --ivory-mid:   #EDEAE3;
  --ivory-dark:  #E8E3D8;

  /* Typography */
  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body:    'DM Sans', system-ui, -apple-system, sans-serif;

  /* Spacing & Layout */
  --max-width:    1100px;
  --section-pad:  clamp(4rem, 8vw, 7rem);
  --radius-pill:  100px;
  --radius-card:  12px;

  /* Shadows */
  --shadow-btn:   0 2px 14px rgba(60, 94, 60, 0.18);
  --shadow-soft:  0 4px 24px rgba(60, 94, 60, 0.08);

  /* Motion */
  --ease:         0.25s ease;
}

/* ── Base ── */
html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--ivory);
  color: var(--graphite);
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 1rem;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { display: block; max-width: 100%; }
a   { color: inherit; text-decoration: none; }
ul  { list-style: none; }

/* ── Accessibility: focus rings ── */
:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
  border-radius: 3px;
}

/* ── Shared wordmark split colours ── */
.neo   { color: var(--forest); }
.biome { color: var(--gold); }


/* ═══════════════════════════════════════════════════════
   ANIMATIONS
   ═══════════════════════════════════════════════════════ */
@keyframes riseIn {
  from { opacity: 0; transform: translateY(22px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes breathe {
  0%, 100% { transform: translate(-50%, -50%) scale(1);    opacity: 1; }
  50%       { transform: translate(-50%, -50%) scale(1.04); opacity: 0.48; }
}

@keyframes pulse {
  0%, 100% { opacity: 1;   box-shadow: 0 0 0 0   rgba(154, 168, 77, 0.5); }
  50%       { opacity: 0.6; box-shadow: 0 0 0 6px rgba(154, 168, 77, 0); }
}

.anim-rise {
  opacity: 0;
  animation: riseIn 1s ease forwards;
  animation-delay: var(--delay, 0s);
}


/* ═══════════════════════════════════════════════════════
   NAVIGATION
   ═══════════════════════════════════════════════════════ */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 2rem;
  transition: background var(--ease), box-shadow var(--ease);
}

.site-nav.scrolled {
  background: rgba(246, 244, 239, 0.93);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 rgba(60, 94, 60, 0.09);
}

.nav-wordmark {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  transition: opacity var(--ease);
}
.nav-wordmark:hover { opacity: 0.65; }

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--graphite);
  opacity: 0.65;
  transition: opacity var(--ease);
}
.nav-links a:hover { opacity: 1; }

/* Hamburger toggle — hidden on desktop */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 6px;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--forest);
  border-radius: 2px;
  transition: transform 0.28s ease, opacity 0.28s ease;
  transform-origin: center;
}

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


/* ═══════════════════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════════════════ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 9rem 2rem 5rem;
  overflow: hidden;
  background-color: var(--ivory);
}

/* Soft ambient radial light */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 65% 50% at 22% 0%,  rgba(143, 175, 140, 0.15) 0%, transparent 55%),
    radial-gradient(ellipse 50% 40% at 80% 12%, rgba(195, 225, 200, 0.10) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* Topographic SVG background */
.topo-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

/* Breathing rings */
.rings {
  position: absolute;
  top: 46%;
  left: 50%;
  pointer-events: none;
  z-index: 0;
}

.ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(60, 94, 60, 0.07);
  transform: translate(-50%, -50%);
  animation: breathe 9s ease-in-out infinite;
}

.ring:nth-child(1) { width: 250px;  height: 250px;  animation-delay: 0s; }
.ring:nth-child(2) { width: 440px;  height: 440px;  animation-delay: 1.5s; border-color: rgba(187, 143, 78, 0.06); }
.ring:nth-child(3) { width: 650px;  height: 650px;  animation-delay: 3s; }
.ring:nth-child(4) { width: 880px;  height: 880px;  animation-delay: 4.5s; border-color: rgba(143, 175, 140, 0.04); }

/* Hero text container */
.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 700px;
}

/* Label row */
.label {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.63rem;
  font-weight: 500;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--olive);
  margin-bottom: 2rem;
}

.label-line {
  display: inline-block;
  width: 20px;
  height: 1px;
  background: var(--gold);
  opacity: 0.55;
}

/* Wordmark — large display */
.wordmark {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(4.2rem, 14vw, 8.5rem);
  font-weight: 700;
  letter-spacing: 0.1em;
  line-height: 1;
  text-transform: uppercase;
  margin-bottom: 1.6rem;
}

/* Hero tagline */
.hero-tagline {
  font-size: clamp(0.95rem, 2vw, 1.08rem);
  font-weight: 300;
  line-height: 1.8;
  color: var(--graphite);
  max-width: 520px;
  margin: 0 auto 2.4rem;
  opacity: 0.9;
}

/* CTA row */
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  justify-content: center;
  margin-bottom: 2.2rem;
}

/* Status indicator */
.status-row {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.67rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sage);
  text-align: center;
}

.status-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.status-item--muted {
  font-size: 0.6rem;
  letter-spacing: 0.16em;
  color: rgba(88, 84, 90, 0.68);
}

.status-dot--muted {
  background: rgba(88, 84, 90, 0.38) !important;
  animation: none;
}

.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--spring);
  flex-shrink: 0;
  animation: pulse 3s ease-in-out infinite;
}


/* ═══════════════════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.78em 1.85em;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: background var(--ease), color var(--ease),
              box-shadow var(--ease), transform var(--ease),
              border-color var(--ease), opacity var(--ease);
}

/* Primary — forest green filled */
.btn-primary {
  background: var(--forest);
  color: var(--ivory);
  box-shadow: var(--shadow-btn);
}
.btn-primary:hover {
  background: var(--olive);
  transform: translateY(-1px);
  box-shadow: 0 5px 22px rgba(60, 94, 60, 0.25);
}
.btn-primary:active { transform: translateY(0); }

/* Hero interview CTA uses alternate fill color */
.btn-interview {
  background: var(--gold);
}

.btn-interview:hover {
  background: #a77d42;
}

/* Ghost — outlined */
.btn-ghost {
  background: transparent;
  color: var(--forest);
  border: 1px solid var(--moss);
}
.btn-ghost:hover {
  background: rgba(201, 217, 196, 0.28);
  border-color: var(--sage);
}

/* Step buttons — filled, aligned with primary CTA */
.btn-step {
  margin-top: 1rem;
  background: var(--forest);
  color: var(--ivory);
  box-shadow: var(--shadow-btn);
  font-size: 0.78rem;
}
.btn-step:hover {
  background: var(--olive);
  transform: translateY(-1px);
  box-shadow: 0 5px 22px rgba(60, 94, 60, 0.25);
}

.btn-ext {
  font-size: 0.85em;
  opacity: 0.6;
}

/* Booking button — disabled state */
.btn-book[aria-disabled="true"] {
  background: var(--moss);
  color: var(--sage);
  box-shadow: none;
  cursor: not-allowed;
  pointer-events: none;
  opacity: 0.75;
  transform: none;
}

/* Booking button — enabled (reverts to .btn-primary appearance) */
.btn-book[aria-disabled="false"],
.btn-book:not([aria-disabled]) {
  pointer-events: auto;
  cursor: pointer;
}


/* ═══════════════════════════════════════════════════════
   SECTIONS — shared
   ═══════════════════════════════════════════════════════ */
.section {
  padding: var(--section-pad) 2rem;
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-inner--narrow {
  max-width: 700px;
}

.section-label {
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.7rem;
}

.section h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 600;
  color: var(--forest);
  line-height: 1.15;
  margin-bottom: 1.6rem;
  letter-spacing: -0.01em;
}

.section-intro {
  font-size: 0.93rem;
  line-height: 1.85;
  color: var(--graphite);
  max-width: 600px;
  margin-bottom: 3rem;
  opacity: 0.88;
}


/* ═══════════════════════════════════════════════════════
   PROJECT SCOPE
   ═══════════════════════════════════════════════════════ */
.section-scope {
  background: var(--ivory);
}

.scope-overview {
  font-size: 1rem;
  line-height: 1.88;
  color: var(--graphite);
  max-width: 680px;
  margin-bottom: 3.5rem;
}

.scope-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem 4rem;
}

.scope-col h3 {
  font-family: var(--font-body);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--sage);
  margin-bottom: 1.2rem;
  padding-bottom: 0.65rem;
  border-bottom: 1px solid var(--moss);
}

.scope-list {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.scope-list li {
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--graphite);
  padding-left: 1.25rem;
  position: relative;
}

.scope-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--moss);
  flex-shrink: 0;
}

.scope-list--accent li::before {
  background: rgba(187, 143, 78, 0.55);
}


/* ═══════════════════════════════════════════════════════
   SECTION DIVIDER
   ═══════════════════════════════════════════════════════ */
.section-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.9rem;
  padding: 0 2rem;
}

.divider-line {
  flex: 1;
  max-width: 220px;
  height: 1px;
  background: var(--moss);
}

.divider-leaf {
  color: var(--moss);
  font-size: 0.82rem;
  line-height: 1;
}


/* ═══════════════════════════════════════════════════════
   PARTICIPATE — CONSENT GATE
   ═══════════════════════════════════════════════════════ */
.section-participate {
  background: var(--ivory-mid);
}

.consent-gate {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid rgba(201, 217, 196, 0.7);
}

/* Individual step */
.step {
  border-bottom: 1px solid rgba(201, 217, 196, 0.7);
  padding: 2.4rem 0;
}

/* Step inner layout */
.step-layout {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
}

/* Large step number */
.step-num {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  font-weight: 600;
  color: var(--moss);
  line-height: 1;
  flex-shrink: 0;
  width: 3.2rem;
  text-align: right;
  user-select: none;
  margin-top: 0.1rem;
}

/* Step content column */
.step-body {
  flex: 1;
}

.step-body h3 {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 3vw, 1.7rem);
  font-weight: 600;
  color: var(--forest);
  line-height: 1.2;
  margin-bottom: 0.45rem;
  letter-spacing: -0.01em;
}

.step-body > p {
  font-size: 0.88rem;
  line-height: 1.72;
  color: var(--graphite);
  opacity: 0.85;
  max-width: 500px;
}

/* Consent checkbox — custom styled */
.consent-check {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  cursor: pointer;
  margin-top: 1.6rem;
  margin-bottom: 1.4rem;
  padding: 1rem 1.2rem;
  border: 1px solid var(--moss);
  border-radius: var(--radius-card);
  background: rgba(201, 217, 196, 0.12);
  max-width: 520px;
  transition: border-color var(--ease), background var(--ease);
}

.consent-check:hover {
  border-color: var(--sage);
  background: rgba(201, 217, 196, 0.22);
}

/* Hide native input visually but keep accessible */
.consent-check input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

/* Custom check box */
.check-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  min-width: 20px;
  border: 1.5px solid var(--sage);
  border-radius: 4px;
  background: white;
  margin-top: 0.1rem;
  transition: background var(--ease), border-color var(--ease);
}

/* Checkmark tick via pseudo */
.check-mark::after {
  content: '';
  display: none;
  width: 5px;
  height: 9px;
  border: 2px solid white;
  border-top: none;
  border-left: none;
  transform: rotate(45deg) translate(-0.5px, -1px);
}

.consent-check input:checked ~ .check-mark {
  background: var(--forest);
  border-color: var(--forest);
}
.consent-check input:checked ~ .check-mark::after {
  display: block;
}

/* Keyboard focus on the hidden input — show on label's check-mark */
.consent-check input:focus-visible ~ .check-mark {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.check-label {
  font-size: 0.87rem;
  line-height: 1.6;
  color: var(--graphite);
  font-weight: 400;
}

.check-label a {
  color: var(--forest);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Consent note below booking button */
.consent-note {
  margin-top: 0.8rem;
  font-size: 0.74rem;
  color: var(--sage);
  letter-spacing: 0.02em;
  line-height: 1.55;
  max-width: 420px;
}


/* ═══════════════════════════════════════════════════════
   FAQ — Accordion
   ═══════════════════════════════════════════════════════ */
.section-faq {
  background: var(--ivory);
}

.faq-list {
  margin-top: 0.5rem;
  border-top: 1px solid var(--moss);
}

.faq-item {
  border-bottom: 1px solid var(--moss);
}

.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 1.3rem 0;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--forest);
  gap: 1.2rem;
  transition: color var(--ease);
}

.faq-q:hover { color: var(--olive); }

/* Plus/minus icon */
.faq-icon {
  display: block;
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  position: relative;
}

.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  background: var(--sage);
  border-radius: 2px;
  transition: transform 0.28s ease, opacity 0.28s ease;
}

/* Horizontal bar */
.faq-icon::before {
  top: 50%; left: 0; right: 0;
  height: 1.5px;
  margin-top: -0.75px;
}

/* Vertical bar */
.faq-icon::after {
  left: 50%; top: 0; bottom: 0;
  width: 1.5px;
  margin-left: -0.75px;
}

/* Collapse vertical bar when open */
.faq-q[aria-expanded="true"] .faq-icon::after {
  transform: rotate(90deg);
  opacity: 0;
}

.faq-a {
  padding: 0 2rem 1.4rem 0;
}

.faq-a p {
  font-size: 0.9rem;
  line-height: 1.82;
  color: var(--graphite);
  max-width: 600px;
}

.faq-a a {
  color: var(--olive);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.faq-a a:hover { opacity: 0.75; }


/* ═══════════════════════════════════════════════════════
   STAY INFORMED — Expression of Interest
   ═══════════════════════════════════════════════════════ */
.section-eoi {
  background: var(--ivory-dark);
}

/* Invite card — fields preview + link */
.eoi-invite {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  max-width: 480px;
}

/* Field tags — visual preview of what the form asks */
.eoi-fields {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.eoi-field-tag {
  display: inline-flex;
  align-items: baseline;
  gap: 0.35rem;
  font-size: 0.72rem;
  font-weight: 400;
  color: var(--graphite);
  padding: 0.3em 0.85em;
  border: 1px solid var(--moss);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.55);
}

.eoi-field-opt {
  font-size: 0.65rem;
  color: var(--sage);
  font-weight: 300;
}

/* Privacy note */
.eoi-privacy {
  font-size: 0.73rem;
  line-height: 1.65;
  color: var(--sage);
}

/* ── Microsoft Forms embed (UI comparison) ── */
.eoi-msforms-badge {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: #e8a020;
  color: #fff;
  padding: 0.15em 0.55em;
  border-radius: 3px;
  vertical-align: middle;
  margin-left: 0.5em;
}

.eoi-msforms-wrap {
  width: 100%;
}

.eoi-msforms-frame {
  width: 100%;
  min-height: 900px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 6px;
  background: #fff;
  display: block;
}

.eoi-msforms-note {
  margin-top: 0.75rem;
  padding: 0.6rem 0.9rem;
  background: rgba(232,160,32,0.12);
  border-left: 3px solid #e8a020;
  border-radius: 4px;
  font-size: 0.78rem;
  color: var(--sage);
}

.eoi-msforms-note code {
  font-family: monospace;
  font-size: 0.85em;
  background: rgba(0,0,0,0.18);
  padding: 0.05em 0.3em;
  border-radius: 3px;
}

/* Gold button variant */
.btn-gold {
  background: var(--gold);
  color: white;
  box-shadow: 0 2px 14px rgba(187, 143, 78, 0.22);
}

.btn-gold:hover {
  background: #a67c42;
  transform: translateY(-1px);
  box-shadow: 0 5px 20px rgba(187, 143, 78, 0.30);
}

.btn-gold:active { transform: translateY(0); }

.btn-gold:disabled,
.btn-gold[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
  transform: none;
}

/* ═══════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════ */
.site-footer {
  position: relative;
}

/* Scene image */
.scene {
  position: relative;
  width: 100%;
  height: 44vh;
  min-height: 220px;
  overflow: hidden;
}

.scene img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 35%;
}

/* Fade top of image into page background */
.scene::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    var(--ivory-mid) 0%,
    rgba(232, 227, 216, 0.4) 28%,
    transparent 55%
  );
  z-index: 1;
  pointer-events: none;
}

/* Dark vignette at base */
.scene::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    transparent 48%,
    rgba(28, 44, 28, 0.62) 100%
  );
  z-index: 1;
  pointer-events: none;
}

/* Footer text content */
.footer-content {
  background: var(--forest);
  color: rgba(246, 244, 239, 0.72);
  padding: 3.2rem 2rem;
  text-align: center;
}

.footer-wordmark {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  margin-bottom: 1.3rem;
}

.footer-wordmark .neo   { color: var(--moss); }
.footer-wordmark .biome { color: var(--gold); opacity: 0.88; }

.footer-copy {
  font-size: 0.82rem;
  margin-bottom: 0.5rem;
}

.footer-copy a {
  color: var(--gold);
  opacity: 0.85;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.footer-copy a:hover { opacity: 1; }

.footer-ethics {
  font-size: 0.7rem;
  opacity: 0.45;
  margin-bottom: 0.6rem;
  letter-spacing: 0.04em;
}

.footer-privacy {
  font-size: 0.72rem;
  opacity: 0.45;
  max-width: 460px;
  margin: 0 auto 1.3rem;
  line-height: 1.7;
}

.footer-legal {
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  opacity: 0.35;
  text-transform: uppercase;
}


/* ═══════════════════════════════════════════════════════
   RESPONSIVE — Tablet (≤ 900px)
   ═══════════════════════════════════════════════════════ */
@media (max-width: 900px) {
  .scope-columns {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}


/* ═══════════════════════════════════════════════════════
   RESPONSIVE — Mobile (≤ 680px)
   ═══════════════════════════════════════════════════════ */
@media (max-width: 680px) {
  /* Nav: show hamburger, stack links */
  .site-nav {
    padding: 0.85rem 1rem;
  }

  .nav-wordmark {
    font-size: 0.92rem;
    letter-spacing: 0.16em;
  }

  .nav-toggle { display: flex; }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(246, 244, 239, 0.97);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--moss);
    padding: 0.5rem 0 1rem;
  }

  .site-nav.open .nav-links { display: flex; }

  .nav-links li a {
    display: block;
    padding: 0.75rem 2rem;
    font-size: 0.78rem;
    opacity: 0.75;
  }
  .nav-links li a:hover { opacity: 1; background: rgba(201, 217, 196, 0.15); }

  /* Hero */
  .hero {
    min-height: 92svh;
    padding: 6.6rem 1.1rem 3.5rem;
  }

  .label {
    margin-bottom: 1.4rem;
    font-size: 0.56rem;
    letter-spacing: 0.16em;
    gap: 0.45rem;
  }

  .label-line {
    width: 14px;
  }

  .wordmark {
    font-size: clamp(2.45rem, 15.5vw, 3.9rem);
    letter-spacing: 0.04em;
    margin-bottom: 1rem;
  }

  .hero-tagline {
    font-size: 0.92rem;
    line-height: 1.65;
    max-width: 34ch;
    margin-bottom: 1.6rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 0.65rem;
  }

  .hero-actions .btn {
    width: 100%;
    max-width: 340px;
    align-self: center;
    justify-content: center;
    white-space: normal;
    line-height: 1.25;
    padding: 0.82em 1.2em;
  }

  /* Step layout: stack number above text on small screens */
  .step-layout {
    gap: 1.2rem;
  }

  .step-num {
    font-size: 2rem;
    width: 2.4rem;
  }

  /* Consent checkbox full width */
  .consent-check {
    max-width: 100%;
  }

  /* FAQ */
  .faq-a {
    padding-right: 0;
  }

  /* Footer scene shorter on mobile */
  .scene {
    height: 26vh;
    min-height: 140px;
  }
}


/* ═══════════════════════════════════════════════════════
   RESPONSIVE — Small mobile (≤ 400px)
   ═══════════════════════════════════════════════════════ */
@media (max-width: 400px) {
  .site-nav {
    padding: 0.75rem 0.85rem;
  }

  .hero {
    padding: 6rem 1rem 3rem;
  }

  .hero-tagline {
    font-size: 0.88rem;
  }

  .step-layout {
    flex-direction: column;
    gap: 0.5rem;
  }

  .step-num {
    text-align: left;
    font-size: 1.4rem;
    width: auto;
  }
}

/* ═══════════════════════════════════════════════════════
   RESPONSIVE — Very small mobile (≤ 360px)
   ═══════════════════════════════════════════════════════ */
@media (max-width: 360px) {
  .hero {
    min-height: 90svh;
    padding: 5.7rem 0.9rem 2.8rem;
  }

  .label {
    font-size: 0.52rem;
    letter-spacing: 0.14em;
    margin-bottom: 1.15rem;
  }

  .wordmark {
    font-size: clamp(2.15rem, 14vw, 3.1rem);
    letter-spacing: 0.03em;
  }

  .hero-tagline {
    font-size: 0.84rem;
    line-height: 1.58;
    margin-bottom: 1.3rem;
  }

  .hero-actions .btn {
    font-size: 0.76rem;
    padding: 0.78em 1em;
    max-width: 312px;
  }

  .status-row {
    font-size: 0.62rem;
    letter-spacing: 0.12em;
  }

  .status-item--muted {
    font-size: 0.57rem;
  }
}


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

  .anim-rise { opacity: 1; }
}


/* ═══════════════════════════════════════════════════════
   STAY INFORMED — NATIVE FORM
   ═══════════════════════════════════════════════════════ */

/* Toggle button */
.eoi-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 2rem;
}

.eoi-toggle-arrow {
  font-size: 1.3rem;
  line-height: 1;
  transition: transform 0.3s ease;
  display: inline-block;
}

.eoi-toggle[aria-expanded="true"] .eoi-toggle-arrow {
  transform: rotate(180deg);
}

/* Collapsible panel */
.eoi-collapse {
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  transition: grid-template-rows 0.4s ease, opacity 0.3s ease;
  overflow: hidden;
}

.eoi-collapse > * {
  min-height: 0;
}

.eoi-collapse.open {
  grid-template-rows: 1fr;
  opacity: 1;
}

.eoi-form {
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
  margin-top: 2rem;
}

.eoi-row {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.eoi-label {
  font-family: var(--font-body);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--forest);
}

.eoi-required {
  color: var(--gold);
  margin-left: 2px;
}

.eoi-optional {
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
  color: var(--graphite);
  font-size: 0.8rem;
}

.eoi-input {
  font-family: var(--font-body);
  font-size: 0.97rem;
  color: var(--graphite);
  background: var(--ivory);
  border: 1.5px solid var(--ivory-dark);
  border-radius: 6px;
  padding: 0.65rem 0.9rem;
  transition: border-color var(--ease), box-shadow var(--ease);
  width: 100%;
}

.eoi-input::placeholder {
  color: #a9a5a0;
}

.eoi-input:focus {
  outline: none;
  border-color: var(--sage);
  box-shadow: 0 0 0 3px rgba(143, 175, 140, 0.18);
}

.eoi-textarea {
  resize: vertical;
  min-height: 100px;
}

.eoi-check-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.5rem 1.5rem;
  margin-top: 0.4rem;
}

.eoi-check-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  cursor: pointer;
  font-size: 0.93rem;
  color: var(--graphite);
  padding: 0.45rem 0.6rem;
  border-radius: 6px;
  border: 1.5px solid var(--ivory-dark);
  background: var(--ivory);
  transition: border-color var(--ease), background var(--ease);
}

.eoi-check-item:hover {
  border-color: var(--sage);
  background: rgba(201, 217, 196, 0.15);
}

.eoi-check-item input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.eoi-check-box {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  border: 1.5px solid var(--sage);
  border-radius: 3px;
  background: white;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--ease), border-color var(--ease);
}

.eoi-check-item input:checked ~ .eoi-check-box {
  background: var(--forest);
  border-color: var(--forest);
}

.eoi-check-item input:checked ~ .eoi-check-box::after {
  content: '';
  display: block;
  width: 4px;
  height: 7px;
  border: 2px solid white;
  border-top: none;
  border-left: none;
  transform: rotate(45deg) translate(-0.5px, -1px);
}

.eoi-check-item input:checked ~ span:last-child {
  color: var(--forest);
  font-weight: 500;
}

.eoi-check-item input:focus-visible ~ .eoi-check-box {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.eoi-other-input {
  margin-top: 0.6rem;
}

@media (max-width: 480px) {
  .eoi-check-grid {
    grid-template-columns: 1fr;
  }
}

.h-captcha {
  max-width: 100%;
  overflow: hidden;
}

.eoi-actions {
  margin-top: 0.4rem;
}

.eoi-status {
  font-size: 0.9rem;
  padding: 0.75rem 1rem;
  border-radius: 6px;
  margin-top: 0.5rem;
}

.eoi-status.success {
  background: rgba(60, 94, 60, 0.08);
  color: var(--forest);
  border: 1px solid rgba(60, 94, 60, 0.2);
}

.eoi-status.error {
  background: rgba(187, 143, 78, 0.1);
  color: #7a5a1a;
  border: 1px solid rgba(187, 143, 78, 0.3);
}


/* ═══════════════════════════════════════════════════════
   RESEARCHER SECTION
   ═══════════════════════════════════════════════════════ */
.section-researcher {
  background: var(--ivory);
}

.researcher-layout {
  display: flex;
  gap: 3rem;
  align-items: flex-start;
  margin-top: 2.5rem;
}

.researcher-photo-wrap {
  flex-shrink: 0;
}

.researcher-photo {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--sage);
  display: block;
  /* placeholder background if image is missing */
  background: var(--ivory-dark);
}

.researcher-bio {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.researcher-bio p {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--graphite);
}

.researcher-bio p a {
  color: var(--forest);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.btn-linkedin {
  align-self: flex-start;
}

@media (max-width: 600px) {
  .researcher-layout {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  .btn-linkedin {
    align-self: center;
  }
}