/* ============================================================
   Lumeera Landing Page — style.css
   Mobile-first · CSS Custom Properties · Vanilla CSS
   ============================================================ */

/* ── Google Fonts: Inter ─────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* ── Design Tokens ───────────────────────────────────────── */
:root {
  /* Colour palette — VIR-001 to VIR-003 */
  --color-teal: #156377;
  --color-teal-dark: #0e4a59;
  --color-teal-light: #1e7a91;
  --color-blue-light: #82C8E5;
  --color-blue-pale: #d6eff8;
  --color-orange: #F59E0B;
  --color-brown: #92400E;

  /* Neutrals */
  --color-white: #ffffff;
  --color-offwhite: #f8fafb;
  --color-surface: #f0f7fa;
  --color-border: #cce3eb;
  --color-text: #1a2e35;
  --color-text-muted: #5a7a85;
  --color-text-light: #8aa8b2;
  --colout-text-secondary: #4a5568;

  /* Typography — VIR-005 */
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-size-base: 1rem;
  /* 16px */
  --font-size-sm: 0.875rem;
  /* 14px */
  --font-size-xs: 0.75rem;
  /* 12px */
  --font-size-lg: 1.125rem;
  /* 18px */
  --font-size-xl: 1.25rem;
  /* 20px */
  --font-size-2xl: 1.5rem;
  /* 24px */
  --font-size-3xl: 2rem;
  /* 32px */
  --font-size-4xl: 2.5rem;
  /* 40px */
  --line-height-body: 1.65;
  --line-height-head: 1.2;

  /* Spacing — VIR-004 (min 2rem section padding) */
  --section-padding: 2rem;
  --container-max: 960px;
  --container-pad: 1.25rem;

  /* Shape — VIR-004 (8px border-radius on interactive elements) */
  --radius: 8px;
  --radius-lg: 12px;
  --radius-sm: 4px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(21, 99, 119, 0.08);
  --shadow-md: 0 4px 16px rgba(21, 99, 119, 0.12);
  --shadow-lg: 0 8px 32px rgba(21, 99, 119, 0.16);

  /* Focus ring */
  --focus-ring: 2px solid var(--color-teal);
  --focus-ring-offset: 2px;
}

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

html {
  scroll-behavior: smooth;
  font-size: var(--font-size-base);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: var(--line-height-body);
  color: var(--color-text);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

input,
button,
textarea,
select {
  font: inherit;
}

p,
h1,
h2,
h3,
h4 {
  overflow-wrap: break-word;
}

a {
  color: var(--color-teal);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-teal-dark);
}

a:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-ring-offset);
  border-radius: var(--radius-sm);
}

/* ── Layout Container ────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* ── Skip Link (accessibility) ───────────────────────────── */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  padding: 0.5rem 1rem;
  background: var(--color-teal);
  color: var(--color-white);
  border-radius: var(--radius);
  font-weight: 600;
  text-decoration: none;
  z-index: 9999;
  transition: top var(--transition-fast);
}

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

/* ── Site Header ─────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  padding-block: 0.875rem;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--color-teal);
  font-weight: 700;
  font-size: var(--font-size-lg);
  letter-spacing: -0.02em;
}

.site-logo:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-ring-offset);
  border-radius: var(--radius-sm);
}

.site-logo svg {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

/* Language toggle — contracts §Contract 2 */
.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.375rem 0.875rem;
  border: 1.5px solid var(--color-teal);
  border-radius: 999px;
  background: transparent;
  color: var(--color-teal);
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
}

.lang-toggle:hover {
  background-color: var(--color-teal);
  color: var(--color-white);
}

.lang-toggle:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-ring-offset);
}

/* ── Primary Button ──────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  background-color: var(--color-teal);
  color: var(--color-white);
  font-weight: 600;
  font-size: var(--font-size-base);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  text-decoration: none;
  transition: background-color var(--transition-base), transform var(--transition-fast), box-shadow var(--transition-base);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background-color: var(--color-teal-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
  color: var(--color-white);
  text-decoration: none;
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.btn-primary:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-ring-offset);
}

.btn-primary:disabled,
.btn-primary[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* ── Hero Section ────────────────────────────────────────── */
#hero {
  padding-block: calc(var(--section-padding) * 2.5) calc(var(--section-padding) * 3);
  background: linear-gradient(135deg, var(--color-teal) 0%, var(--color-teal-light) 50%, var(--color-blue-light) 100%);
  color: var(--color-white);
  text-align: center;
  position: relative;
  overflow: hidden;
}

#hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 60% 40%, rgba(130, 200, 229, 0.25) 0%, transparent 60%);
  pointer-events: none;
}

#hero .container {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.hero-text {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  align-items: center;
  /* Centers the content on mobile */
  text-align: center;
  /* Centers the text alignment on mobile */
}

.hero-eyebrow {
  display: inline-block;
  padding: 0.25rem 0.875rem;
  background-color: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 999px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.95);
  width: fit-content;
}

#hero h1 {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  line-height: var(--line-height-head);
  letter-spacing: -0.03em;
  color: var(--color-white);
  max-width: 20ch;
}

.hero-subheadline {
  font-size: var(--font-size-lg);
  line-height: 1.55;
  color: rgba(255, 255, 255, 0.9);
  max-width: 45ch;
}

.hero-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.875rem;
  width: 100%;
}

.hero-actions .btn-primary {
  background-color: var(--color-white);
  color: var(--color-teal);
  font-size: var(--font-size-base);
  padding: 0.75rem 1.75rem;
  width: auto;
  max-width: none;
  white-space: nowrap;
}

.hero-actions .btn-primary:hover {
  background-color: var(--color-offwhite);
  color: var(--color-teal-dark);
}

.hero-note {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.75);
}

.hero-image-wrap {
  width: 100%;
  max-width: 32rem;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  margin-top: 0.5rem;
}

.hero-image-wrap img {
  width: 100%;
  height: auto;
  display: block;
}

/* ── Section Shared Styles ───────────────────────────────── */
.section-label {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-teal);
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  line-height: var(--line-height-head);
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: 1.25rem;
}

.section-body {
  font-size: var(--font-size-base);
  line-height: var(--line-height-body);
  color: var(--color-text);
}

.section-body p+p {
  margin-top: 1rem;
}

/* ── Approach Section ────────────────────────────────────── */
#approach {
  padding-block: calc(var(--section-padding) * 2);
  background-color: var(--color-offwhite);
}

.approach-inner {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.approach-content {
  max-width: 60ch;
}

.approach-steps {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.approach-step {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1.25rem;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border-left: 3px solid var(--color-teal);
  box-shadow: var(--shadow-sm);
}

.approach-step-icon {
  flex-shrink: 0;
  width: 2.25rem;
  height: 2.25rem;
  background-color: var(--color-surface);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-teal);
  font-weight: 700;
  font-size: var(--font-size-sm);
}

.approach-step-text h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: 0.25rem;
  color: var(--color-text);
}

.approach-step-text p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.55;
}

/* ── About Section ───────────────────────────────────────── */
#about {
  padding-block: calc(var(--section-padding) * 2);
  background-color: var(--color-white);
}

.about-inner {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.about-content {
  max-width: 60ch;
}

.about-image-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background-color: var(--color-surface);
}

.about-image-wrap img {
  width: 100%;
  height: auto;
  display: block;
}

.about-values {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1.5rem;
}

.about-value {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.about-value-dot {
  flex-shrink: 0;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background-color: var(--color-teal);
  margin-top: 0.45em;
}

.about-value p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.55;
}

/* ── Waitlist Section ────────────────────────────────────── */
#waitlist {
  padding-block: calc(var(--section-padding) * 2);
  background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-blue-pale) 100%);
}

.waitlist-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 2rem;
}

.waitlist-header .section-title {
  margin-bottom: 0.5rem;
}

.waitlist-subtitle {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  max-width: 42ch;
  margin-inline: auto;
}

/* ── Waitlist Form ────────────────────────────────────────── */
.waitlist-form-wrap {
  width: 100%;
  max-width: 28rem;
}

#waitlist-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  text-align: left;
}

.form-field label {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text);
}

.form-field input[type="email"] {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  background-color: var(--color-white);
  color: var(--color-text);
  font-size: var(--font-size-base);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  -webkit-appearance: none;
  appearance: none;
}

.form-field input[type="email"]:hover {
  border-color: var(--color-teal-light);
}

.form-field input[type="email"]:focus {
  outline: none;
  border-color: var(--color-teal);
  box-shadow: 0 0 0 3px rgba(21, 99, 119, 0.15);
}

.form-field input[type="email"]:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-ring-offset);
}

/* Honeypot — hidden from all humans */
.form-honeypot {
  position: absolute;
  left: -9999px;
  top: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}

/* Consent checkbox — FR-017 */
.form-consent {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  text-align: left;
}

.form-consent input[type="checkbox"] {
  flex-shrink: 0;
  width: 1.125rem;
  height: 1.125rem;
  margin-top: 0.15em;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  accent-color: var(--color-teal);
}

.form-consent input[type="checkbox"]:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-ring-offset);
}

.form-consent label {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.5;
  cursor: pointer;
}

.form-consent label a {
  color: var(--color-teal);
  font-weight: 500;
}

/* Cloudflare Turnstile widget */
.cf-turnstile {
  display: flex;
  justify-content: center;
}

/* Submit button */
#waitlist-form .btn-primary {
  width: 100%;
  font-size: var(--font-size-lg);
  padding: 0.9375rem 2rem;
}

/* Live regions */
.form-error-region {
  font-size: var(--font-size-sm);
  color: #b91c1c;
  background-color: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: var(--radius);
  padding: 0.625rem 0.875rem;
  display: none;
  text-align: left;
}

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

.form-success-region {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 2rem 1.5rem;
  background-color: var(--color-white);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.form-success-region.visible {
  display: flex;
}

.form-success-icon {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background-color: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-teal);
}

.form-success-message {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  text-align: center;
  max-width: 34ch;
  line-height: 1.55;
}

/* Trust microcopy — FR-018, outside <form> */
.waitlist-microcopy {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  line-height: 1.5;
  max-width: 36ch;
  text-align: center;
  max-width: 100%;
}

/* ── Footer ───────────────────────────────────────────────── */
.site-footer {
  background-color: var(--color-teal);
  color: rgba(255, 255, 255, 0.9);
  padding-block: calc(var(--section-padding) * 1.5);
}

.site-footer .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  text-align: center;
  padding-bottom: max(2rem, env(safe-area-inset-bottom));
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.25rem 1.25rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--font-size-sm);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-white);
}

.footer-links a:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.8);
  outline-offset: var(--focus-ring-offset);
  border-radius: var(--radius-sm);
}

.footer-copyright {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.85);
}

/* ── Desktop Breakpoint ── min-width: 1024px ─────────────── */
@media (min-width: 1024px) {
  :root {
    --section-padding: 3rem;
    --container-pad: 2rem;
  }

  #hero {
    padding-block: calc(var(--section-padding) * 2.5) calc(var(--section-padding) * 3.5);
    text-align: left;
  }

  #hero .container {
    align-items: flex-start;
    flex-direction: row;
    justify-content: space-between;
    gap: 3rem;
  }

  .hero-text {
    align-items: flex-start;
    /* Pushes content back to the left on desktop */
    text-align: left;
    gap: 1.5rem;
    /* Larger breathing room for big screens */
  }

  #hero h1 {
    font-size: var(--font-size-4xl);
  }

  .hero-subheadline {
    font-size: var(--font-size-xl);
  }

  .hero-actions {
    flex-direction: row;
    align-items: center;
  }

  .hero-actions .btn-primary {
    width: auto;
  }

  .hero-image-wrap {
    flex-shrink: 0;
    width: 42%;
    max-width: none;
    margin-top: 0;
  }

  #approach {
    padding-block: calc(var(--section-padding) * 2.5);
  }

  .approach-inner {
    flex-direction: row;
    align-items: flex-start;
    gap: 4rem;
  }

  .approach-content {
    flex: 1;
  }

  .approach-steps {
    flex: 1;
    margin-top: 0;
  }

  #about {
    padding-block: calc(var(--section-padding) * 2.5);
  }

  .about-inner {
    flex-direction: row;
    align-items: center;
    gap: 4rem;
  }

  .about-content {
    flex: 1;
  }

  .about-image-wrap {
    flex: 1;
    max-width: 44%;
  }

  .section-title {
    font-size: var(--font-size-3xl);
  }

  .waitlist-inner {
    gap: 2.5rem;
  }

  .waitlist-microcopy {
    text-align: left;
    max-width: 100%;
  }

  .site-footer .container {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

/* ── Reduced Motion ──────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}