/* AiSee Glasses marketing site — uses tokens from theme.css */

/* ---------- Layout primitives ---------- */

.section-inner {
  width: 100%;
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 calc(var(--spacing) * 6);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--tracking-tight);
  text-align: center;
  color: var(--color-fg);
  margin: 0 0 calc(var(--spacing) * 4);
}
.section-title--on-tint { color: var(--aisee-white); }

.section-subtitle {
  max-width: var(--container-3xl);
  margin: 0 auto calc(var(--spacing) * 12);
  text-align: center;
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--color-fg-muted);
}
.section-subtitle--on-tint { color: rgba(255, 255, 255, 0.85); }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-md);
  z-index: 1000;
}
.skip-link:focus { left: 1rem; top: 1rem; }

/* ---------- Sticky nav ---------- */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(8px);
  -webkit-backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--color-slate-100);
}
.site-nav__inner {
  width: 100%;
  max-width: 80rem;
  margin: 0 auto;
  padding: calc(var(--spacing) * 4) calc(var(--spacing) * 6);
  display: flex;
  align-items: center;
  gap: calc(var(--spacing) * 8);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: calc(var(--spacing) * 2.5);
  color: var(--color-fg);
}
.brand:hover { opacity: 1; }
.brand__glyph { display: block; }
.brand__wordmark {
  font-family: var(--font-display);
  font-weight: var(--font-weight-bold);
  font-size: var(--text-2xl);
  letter-spacing: var(--tracking-tight);
  white-space: nowrap;
}

.site-nav__links {
  display: flex;
  gap: calc(var(--spacing) * 8);
  margin-left: auto;
}
.site-nav__links a {
  color: var(--color-fg);
  font-weight: var(--font-weight-semibold);
  font-size: var(--text-base);
}
.site-nav__cta {
  /* sits to the right of the links */
  padding: calc(var(--spacing) * 2.5) calc(var(--spacing) * 5);
  font-size: var(--text-sm);
}
.site-nav__toggle {
  display: none;
  margin-left: auto;
  background: transparent;
  border: 0;
  padding: 0.5rem;
  cursor: pointer;
}
.site-nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-fg);
  border-radius: 2px;
}
.site-nav__toggle span + span { margin-top: 5px; }

.site-nav__mobile {
  display: none;
  padding: calc(var(--spacing) * 4) calc(var(--spacing) * 6) calc(var(--spacing) * 6);
  border-top: 1px solid var(--color-slate-100);
  flex-direction: column;
  gap: calc(var(--spacing) * 4);
}
.site-nav__mobile a {
  color: var(--color-fg);
  font-weight: var(--font-weight-semibold);
  font-size: var(--text-lg);
}
.site-nav__mobile a.aisee-btn { color: var(--color-on-primary); align-self: flex-start; }
.site-nav__mobile[hidden] { display: none; }
.site-nav__mobile.is-open { display: flex; }

/* ---------- Hero ---------- */

.hero {
  background:
    radial-gradient(ellipse at top right, rgba(122, 107, 181, 0.18), transparent 55%),
    var(--color-bg);
  padding: calc(var(--spacing) * 16) 0 calc(var(--spacing) * 20);
}
.hero__inner {
  width: 100%;
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 calc(var(--spacing) * 6);
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: calc(var(--spacing) * 12);
  align-items: center;
}
.hero__title {
  font-family: var(--font-display);
  font-size: clamp(var(--text-4xl), 6vw, var(--text-6xl));
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--tracking-tight);
  line-height: 1.05;
  color: var(--color-fg);
  margin: 0 0 calc(var(--spacing) * 6);
}
.hero__body {
  font-size: var(--text-xl);
  line-height: var(--leading-relaxed);
  color: var(--color-fg-muted);
  margin: 0 0 calc(var(--spacing) * 8);
  max-width: 32rem;
}
.hero__cta {
  padding: calc(var(--spacing) * 3.5) calc(var(--spacing) * 7);
  font-size: var(--text-base);
}
.hero__media {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}
.hero__media img { display: block; width: 100%; height: 100%; object-fit: cover; }

/* ---------- Video band ---------- */

.video-band {
  background:
    var(--gradient-ink-vignette),
    linear-gradient(135deg, #2a2440, var(--aisee-ink));
  color: var(--aisee-white);
}
.video-band__inner {
  width: 100%;
  max-width: 72rem;
  margin: 0 auto;
  padding: calc(var(--spacing) * 24) calc(var(--spacing) * 6);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: calc(var(--spacing) * 8);
  text-align: center;
}
.video-band__play {
  background: transparent;
  border: 0;
  padding: 0;
  color: rgba(255, 255, 255, 0.92);
  cursor: pointer;
  border-radius: var(--radius-full);
  transition: transform var(--duration-base) var(--ease-out),
              color var(--duration-base) var(--ease-in-out);
}
.video-band__play:hover { transform: scale(1.04); color: var(--aisee-white); }
.video-band__play:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--color-ring) 70%, transparent);
}
.video-band__caption {
  margin: 0;
  font-size: var(--text-lg);
  color: rgba(255, 255, 255, 0.78);
  max-width: 32rem;
}

/* ---------- Features section ---------- */

.features { background: var(--color-bg); padding: calc(var(--spacing) * 24) 0; }
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: calc(var(--spacing) * 8);
}
.feature-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: calc(var(--spacing) * 8);
  background: var(--aisee-white);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-sm);
}
.feature-card__icon {
  width: 80px;
  height: 80px;
  margin-bottom: calc(var(--spacing) * 5);
}
.feature-card__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-fg);
  margin: 0;
  line-height: var(--leading-snug);
  max-width: 18rem;
}

/* ---------- Use cases ---------- */

.use-cases { background: var(--aisee-white); padding: calc(var(--spacing) * 24) 0; }
.use-case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: calc(var(--spacing) * 8);
}
.use-case-card {
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
  border-radius: var(--radius-2xl);
  overflow: hidden;
}
.use-case-card__media {
  display: block;
  width: 100%;
  aspect-ratio: 5 / 3;
  object-fit: cover;
}
.use-case-card__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-fg);
  margin: calc(var(--spacing) * 5) calc(var(--spacing) * 6) calc(var(--spacing) * 2);
}
.use-case-card__body {
  margin: 0 calc(var(--spacing) * 6) calc(var(--spacing) * 6);
  color: var(--color-fg-muted);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
}

/* ---------- Waitlist section ---------- */

.waitlist {
  background:
    radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.08), transparent 50%),
    linear-gradient(135deg, var(--aisee-purple) 0%, #5a4f8e 100%);
  color: var(--aisee-white);
  padding: calc(var(--spacing) * 24) 0;
}
.waitlist__inner { display: flex; flex-direction: column; align-items: center; }
.waitlist__card {
  width: 100%;
  max-width: var(--container-xl);
}

/* Form chrome — mirrors mail-list-collector look so users have a consistent
   feel between the two surfaces. */
.form-fields { border: 0; padding: 0; margin: 0; min-width: 0; }

.field {
  display: flex;
  flex-direction: column;
  gap: calc(var(--spacing) * 1.5);
  margin-bottom: calc(var(--spacing) * 4.5);
}
.field label {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-fg);
}

.input {
  width: 100%;
  padding: 0.75rem 0.875rem;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.4;
  color: var(--color-fg);
  background: var(--color-surface);
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
  transition: border-color var(--duration-fast) var(--ease-in-out),
              box-shadow   var(--duration-fast) var(--ease-in-out),
              background   var(--duration-fast) var(--ease-in-out);
}
.input:focus {
  outline: none;
  background: var(--aisee-white);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(122, 107, 181, 0.18);
}
.form-fields:disabled .input {
  background: var(--color-surface);
  color: var(--aisee-ink-50);
  cursor: not-allowed;
}
.form-fields:disabled .field label { opacity: 0.7; }

.actions {
  margin-top: calc(var(--spacing) * 6);
  display: flex;
  align-items: center;
  gap: calc(var(--spacing) * 4);
  flex-wrap: wrap;
}
.privacy {
  font-size: var(--text-xs);
  color: var(--aisee-ink-50);
}

.status {
  margin-top: calc(var(--spacing) * 4);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-lg);
  font-size: 0.9375rem;
  line-height: 1.45;
  display: none;
}
.status.show    { display: block; }
.status.success { background: rgba(122, 107, 181, 0.10); color: var(--color-primary); }
.status.error   { background: rgba(220, 38, 38, 0.08);  color: #b91c1c; }

.success {
  text-align: center;
  padding: calc(var(--spacing) * 4) 0;
  animation: aisee-fade-in 0.35s var(--ease-out);
}
.success-mark {
  width: 56px;
  height: 56px;
  margin: 0 auto calc(var(--spacing) * 5);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(122, 107, 181, 0.12);
  color: var(--color-primary);
  border-radius: var(--radius-full);
}
.success-eyebrow {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin: 0 0 calc(var(--spacing) * 2);
}
.success-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--tracking-tight);
  color: var(--color-fg);
  margin: 0 0 calc(var(--spacing) * 3);
}
.success-message {
  margin: 0 auto;
  max-width: 28rem;
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--color-fg-muted);
}

@keyframes aisee-fade-in {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---------- Specs ---------- */

.specs { background: var(--color-bg); padding: calc(var(--spacing) * 24) 0; }
.specs__grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: calc(var(--spacing) * 12);
  align-items: center;
}
.specs__media {
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.specs__media img {
  display: block;
  width: 100%;
  height: auto;
}
.specs__list {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: calc(var(--spacing) * 5);
}
.specs__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: calc(var(--spacing) * 1);
  padding-bottom: calc(var(--spacing) * 4);
  border-bottom: 1px solid var(--color-slate-100);
}
.specs__row dt {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  margin: 0;
}
.specs__row dd {
  margin: 0;
  font-size: var(--text-lg);
  color: var(--color-fg);
}

/* ---------- FAQs ---------- */

.faqs {
  background:
    radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.08), transparent 50%),
    linear-gradient(180deg, #3b3460 0%, var(--aisee-ink) 100%);
  color: var(--aisee-white);
  padding: calc(var(--spacing) * 24) 0;
}
.faq-list {
  list-style: none;
  margin: 0 auto calc(var(--spacing) * 10);
  padding: 0;
  max-width: 56rem;
  display: flex;
  flex-direction: column;
  gap: calc(var(--spacing) * 3);
}
.faq-list details {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-xl);
  padding: 0;
  transition: background var(--duration-fast) var(--ease-in-out);
}
.faq-list details[open] { background: rgba(255, 255, 255, 0.10); }
.faq-list summary {
  list-style: none;
  cursor: pointer;
  padding: calc(var(--spacing) * 5) calc(var(--spacing) * 6);
  font-weight: var(--font-weight-semibold);
  font-size: var(--text-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: calc(var(--spacing) * 4);
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+";
  font-size: var(--text-2xl);
  line-height: 1;
  color: rgba(255, 255, 255, 0.7);
  transition: transform var(--duration-fast) var(--ease-in-out);
}
.faq-list details[open] summary::after { content: "−"; }
.faq-list summary:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px color-mix(in oklab, var(--color-ring) 60%, transparent);
  border-radius: var(--radius-xl);
}
.faq-answer {
  padding: 0 calc(var(--spacing) * 6) calc(var(--spacing) * 5);
  color: rgba(255, 255, 255, 0.78);
  line-height: var(--leading-relaxed);
}
.faqs__cta { display: flex; justify-content: center; }

/* ---------- Footer ---------- */

.site-footer {
  background: var(--aisee-ink);
  color: rgba(255, 255, 255, 0.7);
  padding: calc(var(--spacing) * 12) 0;
}
.site-footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: calc(var(--spacing) * 5);
  text-align: center;
}
.site-footer__about { margin: 0; font-size: var(--text-base); }
.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: calc(var(--spacing) * 5);
  font-size: var(--text-sm);
}
.site-footer__legal a { color: rgba(255, 255, 255, 0.85); }

/* ---------- Responsive ---------- */

@media (max-width: 960px) {
  .hero__inner   { grid-template-columns: 1fr; }
  .specs__grid   { grid-template-columns: 1fr; gap: calc(var(--spacing) * 8); }
  .feature-grid  { grid-template-columns: repeat(2, 1fr); }
  .use-case-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  .site-nav__links,
  .site-nav__cta { display: none; }
  .site-nav__toggle { display: block; }

  .hero            { padding: calc(var(--spacing) * 12) 0 calc(var(--spacing) * 14); }
  .video-band__inner { padding: calc(var(--spacing) * 16) calc(var(--spacing) * 6); }
  .features, .use-cases, .waitlist, .specs, .faqs {
    padding: calc(var(--spacing) * 16) 0;
  }

  .feature-grid,
  .use-case-grid { grid-template-columns: 1fr; }
  .feature-card  { padding: calc(var(--spacing) * 6); }
}