/* EngTutor waitlist — standalone styles.
   Built to read like the real app: jungle + cream + brass, Inter/mono, sharp
   geometry, tight jungle-tinted shadows. The hero mirrors the app's landing hero
   (a jungle gradient band with cream text and a light, elevated card on it), the
   logo lockup and product mockup mirror the app's chrome exactly. Tokens are
   copied here (not imported) so the page stands entirely on its own. */

:root {
  /* Brand — jungle */
  --color-jungle: #1a4731;
  --color-jungle-light: #245c40;
  --color-jungle-dark: #123524;

  /* Accent — brass (decorative/state only, never an action button) */
  --color-brass: #b8860b;
  --color-brass-light: #c8a24a;
  --color-brass-dark: #946c09;

  /* Base / surfaces — cream ramp */
  --color-bg: #fff4cc;
  --color-surface: #fffbea;
  --color-surface-2: #f4e7b6;
  --color-white: #ffffff;
  --color-border: #dbcb8e;

  /* Text */
  --color-text-primary: #16261c;
  --color-text-secondary: #3e4a41;
  --color-text-muted: #6e7468;
  --color-text-on-dark: #fff4cc;

  /* Semantic — green carries the primary go-forward action */
  --color-success: #2e7d32;
  --color-success-dark: #276a2b;
  --color-error: #b23a2e;
  --color-error-bg: #f8e3df;
  --color-success-bg: #e7f1e1;

  /* Typography — same families the app loads */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;
  --text-xs: 12px;
  --text-sm: 14px;
  --text-base: 16px;
  --text-lg: 18px;
  --text-xl: 20px;
  --text-2xl: 24px;
  --text-3xl: 30px;
  --text-4xl: 36px;

  /* Spacing (4px base) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;

  /* Radius — sharp */
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 6px;
  --radius-pill: 999px;
  --border: 1px solid var(--color-border);

  /* Shadows — tight, crisp, jungle-tinted */
  --shadow-sm: 0 1px 2px rgba(18, 53, 36, 0.12);
  --shadow-md: 0 2px 6px rgba(18, 53, 36, 0.16);
  --shadow-lg: 0 4px 12px rgba(18, 53, 36, 0.2);
  --shadow-xl: 0 18px 40px rgba(18, 53, 36, 0.28);

  /* Gradients */
  --gradient-jungle: linear-gradient(135deg, var(--color-jungle) 0%, var(--color-jungle-light) 100%);
  --gradient-progress: linear-gradient(90deg, var(--color-jungle) 0%, var(--color-brass) 100%);

  /* Motion */
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;

  --nav-height: 64px;
  --content-max: 1140px;
}

/* ── Reset ── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-primary);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
img,
svg {
  max-width: 100%;
  display: block;
}
ul {
  list-style: none;
}
a {
  color: var(--color-jungle);
  text-decoration: none;
}
button,
input,
select {
  font: inherit;
  color: inherit;
}

/* Skip link — visible only on keyboard focus. */
.skip-link {
  position: absolute;
  left: -999px;
  top: var(--space-2);
  z-index: 30;
  background: var(--color-jungle);
  color: var(--color-text-on-dark);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
}
.skip-link:focus {
  left: var(--space-4);
}

/* ── Brand lockup (shared header + footer) — masked logo tinted to the surface
   color, exactly like the app's AuthTopBar/PublicNav. ── */
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}
.brand-logo {
  display: block;
  height: 38px;
  width: 33px;
  flex-shrink: 0;
  background-color: var(--color-text-on-dark);
  -webkit-mask: url(/logo.svg) no-repeat center / contain;
  mask: url(/logo.svg) no-repeat center / contain;
}
.brand-text {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1;
  color: var(--color-text-on-dark);
}

/* ── Header ── deep jungle (jungle-dark) so the bar reads as a distinct chrome
   layer above the lighter jungle-gradient hero, instead of blending into it.
   The brand lockup is centered (it's the bar's only element). ── */
.site-header {
  background-color: var(--color-jungle-dark);
}
.header-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  height: var(--nav-height);
  padding: 0 var(--space-6);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ══════════════════ Hero (jungle gradient) ══════════════════ */
.hero {
  background: var(--gradient-jungle);
  color: var(--color-text-on-dark);
  padding: var(--space-16) var(--space-6);
  overflow: hidden;
}
.hero-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: var(--space-12);
  align-items: center;
}
.hero-copy {
  min-width: 0;
}
.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-brass-light);
  margin-bottom: var(--space-4);
}
.hero-title {
  font-size: clamp(30px, 4.4vw, 44px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--color-text-on-dark);
  margin-bottom: var(--space-5);
  overflow-wrap: break-word;
}
.hero-subtitle {
  font-size: var(--text-lg);
  line-height: 1.6;
  max-width: 46ch;
  color: var(--color-text-on-dark);
  opacity: 0.92;
  margin-bottom: var(--space-8);
}
.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-5);
  font-size: var(--text-sm);
  color: var(--color-text-on-dark);
  opacity: 0.85;
}
.trust-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}
.trust-dot {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-pill);
  background-color: var(--color-brass-light);
  flex-shrink: 0;
}

/* ── Hero right: the signup panel ── */
.hero-panel {
  min-width: 0;
}
.form-card {
  position: relative;
  min-width: 0;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: var(--space-8);
}
.form-anchor {
  position: absolute;
  top: calc(-1 * var(--nav-height) - var(--space-4));
}
.form-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-brass-dark);
  margin-bottom: var(--space-2);
}
.form-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}
.form-lead {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.55;
  margin-bottom: var(--space-6);
}

.field {
  margin-bottom: var(--space-4);
  min-width: 0;
}
.field-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-4);
}
.field-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
}
.field-optional {
  font-weight: 400;
  color: var(--color-text-muted);
}
.req {
  color: var(--color-error);
}
.input {
  width: 100%;
  min-width: 0;
  height: 44px;
  padding: 0 var(--space-3);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--text-base);
  color: var(--color-text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.input::placeholder {
  color: var(--color-text-muted);
}
.input:focus {
  outline: none;
  border-color: var(--color-jungle);
  box-shadow: 0 0 0 1px var(--color-jungle);
}
.input.invalid {
  border-color: var(--color-error);
  box-shadow: 0 0 0 1px var(--color-error);
}
.select {
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%233E4A41' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  padding-right: var(--space-8);
}

/* Honeypot — clip-based hide (no off-screen offset) so it can't cause scroll. */
.hp-field {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

/* Primary go-forward action = green (design-system action-color convention). */
.btn-submit {
  width: 100%;
  height: 48px;
  margin-top: var(--space-2);
  border: none;
  border-radius: var(--radius-sm);
  background-color: var(--color-success);
  color: var(--color-white);
  font-size: var(--text-base);
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}
.btn-submit:hover {
  background-color: var(--color-success-dark);
}
.btn-submit:active {
  transform: translateY(1px);
}
.btn-submit:focus-visible {
  outline: 2px solid var(--color-jungle);
  outline-offset: 2px;
}
.btn-submit:disabled {
  opacity: 0.6;
  cursor: default;
}

.form-status {
  margin-top: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-error);
  display: none;
}
.form-status.is-visible {
  display: block;
}

.privacy-note {
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: var(--border);
  font-size: var(--text-xs);
  line-height: 1.5;
  color: var(--color-text-muted);
}

/* Success panel — replaces the form card in place. */
.success-panel {
  background-color: var(--color-surface);
  border: 1px solid var(--color-success);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: var(--space-10) var(--space-8);
  text-align: center;
}
.success-panel:focus {
  outline: none;
}
.success-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin-bottom: var(--space-4);
  color: var(--color-success);
  background-color: var(--color-success-bg);
  border-radius: var(--radius-pill);
}
.success-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}
.success-msg {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: 1.6;
  max-width: 32rem;
  margin: 0 auto;
}

/* ══════════════════ Why join + product preview (cream) ══════════════════ */
.proof {
  background-color: var(--color-bg);
  padding: var(--space-16) var(--space-6);
}
.proof-inner {
  max-width: var(--content-max);
  margin: 0 auto;
}
.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--space-12);
}
.kicker {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-brass);
  margin-bottom: var(--space-3);
}
.section-title {
  font-size: var(--text-3xl);
  font-weight: 700;
  line-height: 1.15;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}
.section-lead {
  font-size: var(--text-lg);
  line-height: 1.6;
  color: var(--color-text-secondary);
}

.proof-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-12);
  align-items: center;
}
.proof-points {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}
.point {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}
.point-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-jungle);
  background-color: var(--color-surface);
  border: var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}
.point-body {
  min-width: 0;
  font-size: var(--text-base);
  line-height: 1.55;
  color: var(--color-text-secondary);
  overflow-wrap: break-word;
}
.point-title {
  display: block;
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}

/* ── Product mockup (mirrors the app's landing mockup) ── */
.mockup {
  min-width: 0;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.mock-bar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-jungle-dark);
  border-bottom: 1px solid var(--color-jungle);
}
.mock-dots {
  display: inline-flex;
  gap: 6px;
}
.mock-dots i {
  width: 9px;
  height: 9px;
  border-radius: var(--radius-pill);
  background-color: var(--color-jungle-light);
}
.mock-wordmark {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-text-on-dark);
}
.mock-body {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.mock-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
}
.mock-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-brass);
  margin-bottom: 2px;
}
.mock-title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text-primary);
}
.mock-pill {
  flex-shrink: 0;
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-brass-dark);
  background-color: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 2px var(--space-2);
}
.mock-course {
  background-color: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3);
}
.mock-course-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-2);
}
.mock-course-name {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-primary);
}
.mock-chip {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-white);
  background-color: var(--color-success);
  border-radius: var(--radius-sm);
  padding: 2px var(--space-2);
}
.mock-prog {
  height: 8px;
  border-radius: var(--radius-sm);
  background-color: var(--color-border);
  overflow: hidden;
}
.mock-prog > span {
  display: block;
  height: 100%;
  border-radius: var(--radius-sm);
  background: var(--gradient-progress);
}
.mock-road {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.mock-node {
  flex: 1;
  text-align: center;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-text-muted);
  background-color: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-2) 0;
}
.mock-node-done {
  color: var(--color-white);
  background-color: var(--color-jungle);
  border-color: var(--color-jungle);
}
.mock-node-active {
  color: var(--color-brass-dark);
  border-color: var(--color-brass);
}
.mock-chat {
  border-left: 3px solid var(--color-brass);
  background-color: var(--color-surface-2);
  border-radius: var(--radius-sm);
  padding: var(--space-3);
}
.mock-atlas {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-brass-dark);
  margin-bottom: var(--space-1);
}
.mock-chat p {
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--color-text-secondary);
}

/* ══════════════════ Launching Soon (closing statement) ══════════════════ */
.launch {
  background: var(--gradient-jungle);
  color: var(--color-text-on-dark);
  padding: var(--space-16) var(--space-6);
  text-align: center;
  overflow: hidden;
}
.launch-inner {
  max-width: 820px;
  margin: 0 auto;
}
.launch-kicker {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-brass-light);
  margin-bottom: var(--space-5);
}
.launch-title {
  font-size: clamp(48px, 11vw, 104px);
  font-weight: 700;
  line-height: 0.98;
  letter-spacing: -0.03em;
  color: var(--color-text-on-dark);
  margin-bottom: var(--space-6);
}
.launch-accent {
  color: var(--color-brass-light);
}
.launch-sub {
  font-size: var(--text-lg);
  line-height: 1.6;
  color: var(--color-text-on-dark);
  opacity: 0.9;
  max-width: 40ch;
  margin: 0 auto var(--space-8);
}
.launch-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 52px;
  padding: 0 var(--space-8);
  border-radius: var(--radius-sm);
  background-color: var(--color-success);
  color: var(--color-white);
  font-size: var(--text-lg);
  font-weight: 600;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}
.launch-cta:hover {
  background-color: var(--color-success-dark);
  text-decoration: none;
}
.launch-cta:active {
  transform: translateY(1px);
}
.launch-cta:focus-visible {
  outline: 2px solid var(--color-text-on-dark);
  outline-offset: 2px;
}

/* ══════════════════ Footer (jungle chrome) ══════════════════ */
.site-footer {
  background-color: var(--color-jungle-dark);
  color: var(--color-text-on-dark);
  padding: var(--space-10) var(--space-6);
  margin-top: auto;
}
.footer-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  flex-wrap: wrap;
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
}
.footer-brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}
.footer-wordmark {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--color-text-on-dark);
}
.footer-by {
  font-size: var(--text-sm);
  color: rgba(255, 244, 204, 0.75);
}
.footer-contact {
  font-size: var(--text-sm);
  color: var(--color-text-on-dark);
}
.footer-contact a {
  color: var(--color-brass-light);
  font-weight: 600;
}
.footer-contact a:hover {
  text-decoration: underline;
}
.footer-fine {
  max-width: var(--content-max);
  margin: var(--space-6) auto 0;
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-jungle-light);
  font-size: var(--text-xs);
  color: rgba(255, 244, 204, 0.65);
}

/* ══════════════════ Responsive ══════════════════ */
@media (max-width: 920px) {
  .hero {
    padding: var(--space-12) var(--space-5);
  }
  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-8);
  }
  .hero-subtitle {
    max-width: 60ch;
  }
  .proof {
    padding: var(--space-12) var(--space-5);
  }
  .proof-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-10);
  }
  .section-head {
    margin-bottom: var(--space-10);
  }
  .launch {
    padding: var(--space-12) var(--space-5);
  }
}

@media (max-width: 520px) {
  .hero {
    padding: var(--space-10) var(--space-4);
  }
  .header-inner {
    padding: 0 var(--space-4);
  }
  .form-card {
    padding: var(--space-6);
  }
  .field-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
  }
  .field-row .field {
    margin-bottom: var(--space-4);
  }
  .success-panel {
    padding: var(--space-8) var(--space-5);
  }
  .proof {
    padding: var(--space-10) var(--space-4);
  }
  .launch {
    padding: var(--space-10) var(--space-4);
  }
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-4);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    transition: none !important;
  }
}