/* ============================================================
   HuntBoard Landing — style.css
   Mobile-first, dark mode via prefers-color-scheme
   Brand: teal #0D9488 / amber #F59E0B / slate neutrals
   ============================================================ */

/* ---------- CSS Custom Properties ---------- */
:root {
  --color-primary:    #0D9488;
  --color-primary-dk: #0F766E; /* hover state */
  --color-accent:     #F59E0B;
  --color-bg:         #FFFFFF;
  --color-surface:    #F8FAFC;
  --color-border:     #E2E8F0;
  --color-text:       #0F172A;
  --color-text-muted: #64748B;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --shadow-card: 0 1px 3px rgba(0,0,0,.06), 0 4px 12px rgba(0,0,0,.04);
  --shadow-btn:  0 1px 3px rgba(13,148,136,.25);

  --max-w: 1100px;
  --gap:   clamp(1.5rem, 4vw, 3rem);

  --font: system-ui, -apple-system, 'Segoe UI', Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-primary:    #5EEAD4;
    --color-primary-dk: #99F6E4;
    --color-accent:     #FCD34D;
    --color-bg:         #0F172A;
    --color-surface:    #1E293B;
    --color-border:     #334155;
    --color-text:       #F8FAFC;
    --color-text-muted: #94A3B8;

    --shadow-card: 0 1px 3px rgba(0,0,0,.3), 0 4px 16px rgba(0,0,0,.2);
    --shadow-btn:  0 1px 4px rgba(94,234,212,.2);
  }
}

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

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

body {
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

/* ---------- Utilities ---------- */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: clamp(1rem, 5vw, 2.5rem);
}

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

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1;
  padding: .75rem 1.5rem;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background .15s, transform .1s, box-shadow .15s;
  white-space: nowrap;
}

.btn:active { transform: scale(.98); }

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-btn);
}

@media (prefers-color-scheme: dark) {
  .btn-primary { color: #0F172A; }
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--color-primary-dk);
  outline: none;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

/* ---------- Badge ---------- */
.badge {
  display: inline-block;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: color-mix(in srgb, var(--color-accent) 12%, transparent);
  padding: .3rem .7rem;
  border-radius: 99px;
  margin-bottom: 1.25rem;
}

/* ---------- Hero ---------- */
.hero {
  background: var(--color-bg);
  padding-bottom: clamp(3rem, 8vw, 6rem);
}

.nav {
  display: flex;
  align-items: center;
  padding-top: 1.5rem;
  padding-bottom: 1.5rem;
}

.nav-logo {
  /* Let the SVG text render at native size; constrain via width attr */
  height: auto;
}

.hero-content {
  padding-top: clamp(2.5rem, 6vw, 5rem);
  max-width: 680px;
}

.hero-headline {
  font-size: clamp(2.25rem, 5.5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -.03em;
  color: var(--color-text);
  margin-bottom: 1.25rem;
}

/* Teal accent on first word */
.hero-headline::first-line {
  /* CSS can't easily color part of a line — done via span in HTML if needed */
}

.hero-sub {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--color-text-muted);
  max-width: 520px;
  margin-bottom: 2rem;
  line-height: 1.65;
}

/* ---------- Story ---------- */
.story {
  background: var(--color-surface);
  padding: clamp(2.5rem, 6vw, 5rem) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.story-inner {
  max-width: 720px;
  position: relative;
}

.story-quote-mark {
  font-size: 6rem;
  line-height: 1;
  color: var(--color-primary);
  opacity: .25;
  font-family: Georgia, serif;
  position: absolute;
  top: -1.5rem;
  left: calc(clamp(1rem, 5vw, 2.5rem) - .5rem);
  pointer-events: none;
  user-select: none;
}

.story-text {
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  line-height: 1.7;
  color: var(--color-text);
  font-style: normal;
  padding-top: 1rem;
}

.story-attribution {
  margin-top: 1.25rem;
  font-size: .9rem;
  color: var(--color-text-muted);
  font-style: italic;
}

/* ---------- Features ---------- */
.features {
  padding: clamp(3rem, 8vw, 6rem) 0;
  background: var(--color-bg);
}

.section-title {
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -.025em;
  color: var(--color-text);
  margin-bottom: clamp(1.5rem, 4vw, 3rem);
  text-align: center;
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 540px) {
  .feature-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 900px) {
  .feature-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem 1.5rem;
  box-shadow: var(--shadow-card);
  transition: transform .2s, box-shadow .2s;
}

.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0,0,0,.08), 0 1px 4px rgba(0,0,0,.06);
}

@media (prefers-color-scheme: dark) {
  .feature-card:hover {
    box-shadow: 0 4px 20px rgba(0,0,0,.4);
  }
}

.feature-icon {
  width: 2.5rem;
  height: 2.5rem;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.feature-icon svg {
  width: 100%;
  height: 100%;
}

.feature-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: .5rem;
}

.feature-desc {
  font-size: .9375rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ---------- Waitlist ---------- */
.waitlist {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: clamp(3rem, 8vw, 6rem) 0;
}

.waitlist-inner {
  max-width: 560px;
  text-align: center;
}

.waitlist-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -.03em;
  color: var(--color-text);
  margin-bottom: .75rem;
}

.waitlist-sub {
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1.65;
  margin-bottom: 2rem;
}

.input-row {
  display: flex;
  flex-direction: column;
  gap: .75rem;
}

@media (min-width: 480px) {
  .input-row {
    flex-direction: row;
    align-items: stretch;
  }
}

.email-input {
  flex: 1;
  font-family: var(--font);
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: .75rem 1rem;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
  -webkit-appearance: none;
}

.email-input::placeholder {
  color: var(--color-text-muted);
  opacity: .6;
}

.email-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 18%, transparent);
}

.submit-btn {
  flex-shrink: 0;
}

/* Spinner — pure CSS */
.btn-spinner {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  border: 2px solid rgba(255,255,255,.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .7s linear infinite;
}

@media (prefers-color-scheme: dark) {
  .btn-spinner {
    border-color: rgba(15,23,42,.3);
    border-top-color: #0F172A;
  }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.form-message {
  margin-top: .875rem;
  font-size: .9375rem;
  min-height: 1.5em;
  transition: opacity .2s;
}

.form-message.success { color: var(--color-primary); }
.form-message.error   { color: #EF4444; }

/* ---------- Footer ---------- */
.footer {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding: 2rem 0;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .5rem;
  text-align: center;
}

.footer-mark {
  opacity: .6;
  height: auto;
}

.footer-text {
  font-size: .875rem;
  color: var(--color-text-muted);
}

.footer-domain {
  font-size: .875rem;
  color: var(--color-primary);
  font-weight: 600;
}