/* ==========================================================================
   Aged Science LLC — Core stylesheet
   Tokens, reset, typography, layout, components.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design tokens
   -------------------------------------------------------------------------- */

:root {
  /* Surfaces */
  --color-bg: #0a0a0a;
  --color-surface: #111111;
  --color-line: #222222;
  --color-line-soft: #1a1a1a;

  /* Ink */
  --color-text: #ffffff;
  --color-text-muted: #9a9a9a;
  --color-text-dim: #6e6e6e;

  /* Accent */
  --color-accent: #cc0000;
  --color-accent-bright: #ff1a1a;

  /* Type */
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  --text-display: clamp(3.25rem, 13vw, 11rem);
  --text-display-sm: clamp(2.5rem, 9vw, 6rem);
  --text-h2: clamp(1.75rem, 1.2rem + 2.4vw, 3rem);
  --text-h3: clamp(1.125rem, 1rem + 0.6vw, 1.5rem);
  --text-lede: clamp(1.0625rem, 1rem + 0.5vw, 1.375rem);
  --text-body: 1rem;
  --text-small: 0.875rem;
  --text-label: 0.6875rem;

  /* Space */
  --space-section: clamp(4.5rem, 3rem + 7vw, 9rem);
  --space-gutter: clamp(1.25rem, 0.75rem + 2vw, 3rem);
  --wrap-max: 76rem;
  --prose-max: 44rem;

  /* Motion */
  --duration-fast: 130ms;
  --duration-normal: 260ms;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

/* --------------------------------------------------------------------------
   2. Reset & base
   -------------------------------------------------------------------------- */

*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  border-radius: 0;
}

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

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--text-body);
  line-height: 1.65;
  letter-spacing: -0.006em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  touch-action: manipulation;
  -webkit-tap-highlight-color: rgba(204, 0, 0, 0.18);
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  padding: 0;
  list-style: none;
}

/* Visible focus on every interactive element. */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--color-accent-bright);
  outline-offset: 3px;
}

::selection {
  background-color: var(--color-accent);
  color: var(--color-text);
}

/* --------------------------------------------------------------------------
   3. Utility
   -------------------------------------------------------------------------- */

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 200;
  padding: 0.75rem 1.25rem;
  background-color: var(--color-accent);
  color: var(--color-text);
  font-size: var(--text-small);
  font-weight: 600;
  transform: translateY(-120%);
  transition: transform var(--duration-fast) var(--ease-out);
}

.skip-link:focus-visible {
  transform: translateY(0);
}

.wrap {
  width: 100%;
  max-width: var(--wrap-max);
  margin-inline: auto;
  padding-inline: max(var(--space-gutter), env(safe-area-inset-left), env(safe-area-inset-right));
}

.rule {
  height: 1px;
  border: 0;
  background-color: var(--color-line);
}

.accent-rule {
  width: 4.5rem;
  height: 3px;
  border: 0;
  background-color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   4. Typography
   -------------------------------------------------------------------------- */

h1,
h2,
h3,
h4 {
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  text-wrap: balance;
  scroll-margin-top: 6.5rem;
}

.display {
  font-size: var(--text-display);
  font-weight: 800;
  line-height: 0.86;
  letter-spacing: -0.045em;
  text-transform: uppercase;
}

.display--sm {
  font-size: var(--text-display-sm);
}

.section-title {
  font-size: var(--text-h2);
}

.eyebrow {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-label);
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-dim);
}

.eyebrow--accent {
  color: var(--color-accent-bright);
}

.lede {
  max-width: 46ch;
  font-size: var(--text-lede);
  line-height: 1.5;
  letter-spacing: -0.015em;
  color: var(--color-text-muted);
  text-wrap: pretty;
}

.muted {
  color: var(--color-text-muted);
}

.accent-text {
  color: var(--color-accent-bright);
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* --------------------------------------------------------------------------
   5. Page scaffolding
   -------------------------------------------------------------------------- */

.page {
  min-height: 100vh;
  padding-top: 4.25rem; /* clears the fixed nav */
}

.section {
  padding-block: var(--space-section);
  border-top: 1px solid var(--color-line-soft);
}

.section--flush {
  border-top: 0;
}

/* Swiss two-column: sticky label rail on the left, content on the right. */
.split {
  display: grid;
  gap: clamp(1.75rem, 1rem + 3vw, 4rem);
}

.split__rail > .eyebrow {
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-line);
}

.split__rail-note {
  margin-top: 0.75rem;
  font-size: var(--text-small);
  color: var(--color-text-dim);
}

.stack > * + * {
  margin-top: 1.125rem;
}

.stack--tight > * + * {
  margin-top: 0.5rem;
}

.stack--loose > * + * {
  margin-top: 2rem;
}

@media (min-width: 60rem) {
  .split {
    grid-template-columns: 14rem 1fr;
  }

  .split__rail {
    position: sticky;
    top: 6.5rem;
    align-self: start;
  }
}

/* --------------------------------------------------------------------------
   6. Hero
   -------------------------------------------------------------------------- */

.hero {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: calc(100svh - 4.25rem);
  padding-block: clamp(4rem, 12vh, 8rem) clamp(2.5rem, 7vh, 4.5rem);
  overflow: hidden;
}

/* Hairline column grid — texture without imagery. */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    to right,
    var(--color-line-soft) 0,
    var(--color-line-soft) 1px,
    transparent 1px,
    transparent 25%
  );
  opacity: 0.7;
  pointer-events: none;
}

.hero > * {
  position: relative;
}

.hero__inner {
  width: 100%;
  max-width: var(--wrap-max);
  margin-inline: auto;
  padding-inline: max(var(--space-gutter), env(safe-area-inset-left), env(safe-area-inset-right));
}

.hero__tagline {
  margin-top: clamp(1.25rem, 3vw, 2rem);
  font-family: var(--font-mono);
  font-size: clamp(0.8125rem, 0.72rem + 0.4vw, 1rem);
  font-weight: 500;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--color-text);
}

.hero__rule {
  margin-top: clamp(1.25rem, 3vw, 2rem);
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 2rem;
  margin-top: clamp(2.5rem, 6vw, 4rem);
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-line);
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-dim);
}

/* Compact hero for interior pages. */
.hero--interior {
  min-height: 0;
  padding-block: clamp(3.5rem, 10vw, 7rem) clamp(3rem, 8vw, 5rem);
  border-bottom: 1px solid var(--color-line-soft);
}

.hero--interior .hero__inner > .eyebrow {
  margin-bottom: 1.25rem;
}

/* --------------------------------------------------------------------------
   7. Buttons
   -------------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.9rem 1.6rem;
  border: 1px solid var(--color-text);
  background-color: var(--color-text);
  color: var(--color-bg);
  font-family: var(--font-sans);
  font-size: var(--text-small);
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: background-color var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
}

.btn:hover {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-text);
}

.btn:active {
  transform: translateY(1px);
}

.btn--ghost {
  background-color: transparent;
  border-color: var(--color-line);
  color: var(--color-text);
}

.btn--ghost:hover {
  border-color: var(--color-accent);
  background-color: transparent;
  color: var(--color-accent-bright);
}

/* Store badges — unavailable until launch, so they are static, not buttons. */
.store-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.store-badge {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: 0.85rem 1.5rem;
  border: 1px solid var(--color-line);
  background-color: var(--color-bg);
  color: var(--color-text-dim);
  cursor: not-allowed;
}

.store-badge__platform {
  font-size: var(--text-small);
  font-weight: 600;
  color: var(--color-text-muted);
}

.store-badge__status {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* --------------------------------------------------------------------------
   8. Cards & grids
   -------------------------------------------------------------------------- */

.card {
  padding: clamp(1.5rem, 1rem + 2vw, 2.75rem);
  border: 1px solid var(--color-line);
  background-color: var(--color-surface);
}

/* Featured product card — deliberately oversized against the body grid. */
.product-card {
  display: grid;
  gap: clamp(2rem, 1rem + 4vw, 3.5rem);
  padding: clamp(1.75rem, 1rem + 4vw, 4rem);
  border: 1px solid var(--color-line);
  background-color: var(--color-surface);
  transition: border-color var(--duration-normal) var(--ease-out);
}

.product-card:hover {
  border-color: #333333;
}

.product-card__name {
  font-size: clamp(2.75rem, 1.5rem + 7vw, 6rem);
  font-weight: 800;
  line-height: 0.9;
  letter-spacing: -0.045em;
  text-transform: uppercase;
}

.product-card__accent {
  color: var(--color-accent-bright);
}

@media (min-width: 56rem) {
  .product-card {
    grid-template-columns: 1.1fr 1fr;
    align-items: start;
  }
}

/* Feature list — hairline separated rows, numbered. */
.feature-list {
  border-top: 1px solid var(--color-line);
}

.feature-list__item {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding-block: 0.85rem;
  border-bottom: 1px solid var(--color-line);
}

.feature-list__index {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--text-label);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.1em;
  color: var(--color-accent-bright);
}

.feature-list__label {
  min-width: 0;
  font-size: var(--text-small);
  font-weight: 500;
  overflow-wrap: break-word;
}

/* Feature grid — two columns of detailed features. */
.feature-grid {
  display: grid;
  gap: 1px;
  border: 1px solid var(--color-line);
  background-color: var(--color-line);
}

.feature-grid__cell {
  min-width: 0;
  padding: clamp(1.5rem, 1rem + 2vw, 2.5rem);
  background-color: var(--color-bg);
  transition: background-color var(--duration-normal) var(--ease-out);
}

.feature-grid__cell:hover {
  background-color: var(--color-surface);
}

.feature-grid__cell h3 {
  margin-top: 0.75rem;
  font-size: var(--text-h3);
}

.feature-grid__cell p {
  margin-top: 0.6rem;
  font-size: var(--text-small);
  color: var(--color-text-muted);
  overflow-wrap: break-word;
}

@media (min-width: 48rem) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Fact rows — legal / registration data. */
.facts {
  border-top: 1px solid var(--color-line);
}

.facts__row {
  display: grid;
  gap: 0.15rem 2rem;
  padding-block: 1rem;
  border-bottom: 1px solid var(--color-line);
}

.facts__key {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-dim);
}

.facts__value {
  min-width: 0;
  font-size: var(--text-small);
  font-variant-numeric: tabular-nums;
  overflow-wrap: break-word;
}

@media (min-width: 40rem) {
  .facts__row {
    grid-template-columns: 12rem 1fr;
    align-items: baseline;
  }
}

/* Leadership cards — hairline-divided grid, monogram in place of a portrait. */
.leaders {
  display: grid;
  gap: 1px;
  border: 1px solid var(--color-line);
  background-color: var(--color-line);
}

.leader {
  min-width: 0;
  padding: clamp(1.5rem, 1rem + 2vw, 2.5rem);
  background-color: var(--color-surface);
  transition: background-color var(--duration-normal) var(--ease-out);
}

.leader:hover {
  background-color: var(--color-bg);
}

.leader__monogram {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3.25rem;
  height: 3.25rem;
  border: 1px solid var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-accent-bright);
}

.leader__name {
  margin-top: 1.5rem;
  font-size: clamp(1.375rem, 1.2rem + 1vw, 1.875rem);
  overflow-wrap: break-word;
}

.leader__title {
  margin-top: 0.5rem;
}

.leader__bio {
  margin-top: 1.25rem;
  font-size: var(--text-small);
  color: var(--color-text-muted);
  overflow-wrap: break-word;
}

@media (min-width: 48rem) {
  .leaders {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Value cards */
.values {
  display: grid;
  gap: 1.5rem;
}

.values__item {
  padding-top: 1.25rem;
  border-top: 2px solid var(--color-accent);
}

.values__item h3 {
  font-size: var(--text-h3);
}

.values__item p {
  margin-top: 0.5rem;
  font-size: var(--text-small);
  color: var(--color-text-muted);
}

@media (min-width: 48rem) {
  .values {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }
}

/* Phone-shaped placeholders — outlines only, no imagery. */
.screens {
  display: grid;
  gap: clamp(1rem, 3vw, 2rem);
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  max-width: 52rem;
}

.screen {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  aspect-ratio: 9 / 19.5;
  padding: 1.25rem;
  border: 1px solid var(--color-line);
  background-color: var(--color-surface);
  transition: border-color var(--duration-normal) var(--ease-out);
}

.screen:hover {
  border-color: var(--color-accent);
}

.screen__notch {
  width: 34%;
  height: 0.4rem;
  margin-inline: auto;
  background-color: var(--color-line);
}

.screen__label {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  text-align: center;
}

/* Link list — legal hub, contact, cross-links. */
.link-list {
  border-top: 1px solid var(--color-line);
}

.link-list__item {
  border-bottom: 1px solid var(--color-line);
}

.link-list__link {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.5rem;
  padding-block: 1.25rem;
  transition: color var(--duration-fast) var(--ease-out),
    padding-inline-start var(--duration-normal) var(--ease-out);
}

.link-list__link:hover {
  padding-inline-start: 0.75rem;
  color: var(--color-accent-bright);
}

.link-list__text {
  flex: 1 1 auto;
  min-width: 0;
}

.link-list__title {
  display: block;
  font-size: var(--text-h3);
  font-weight: 600;
  letter-spacing: -0.02em;
  overflow-wrap: break-word;
}

.link-list__desc {
  display: block;
  margin-top: 0.4rem;
  max-width: 52ch;
  font-size: var(--text-small);
  color: var(--color-text-muted);
}

.link-list__arrow {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--text-small);
}

/* Inline text link */
.link {
  color: var(--color-text);
  border-bottom: 1px solid var(--color-accent);
  transition: color var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out);
}

.link:hover {
  color: var(--color-accent-bright);
  border-color: var(--color-accent-bright);
}

/* Callout */
.callout {
  padding: clamp(1.25rem, 1rem + 1.5vw, 2rem);
  border-left: 2px solid var(--color-accent);
  background-color: var(--color-surface);
  font-size: var(--text-small);
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   9. Long-form legal prose
   -------------------------------------------------------------------------- */

.prose {
  max-width: var(--prose-max);
}

.prose h2 {
  margin-top: 3.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-line);
  font-size: clamp(1.25rem, 1.1rem + 0.8vw, 1.75rem);
}

.prose h2:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.prose h3 {
  margin-top: 2rem;
  font-size: var(--text-h3);
}

.prose p,
.prose li {
  color: var(--color-text-muted);
  overflow-wrap: break-word;
}

.prose p {
  margin-top: 1rem;
}

.prose ul,
.prose ol {
  margin-top: 1rem;
  padding-left: 1.25rem;
  list-style: disc;
}

.prose ol {
  list-style: decimal;
}

.prose li {
  margin-top: 0.5rem;
  padding-left: 0.35rem;
}

.prose li::marker {
  color: var(--color-accent);
}

.prose strong {
  color: var(--color-text);
  font-weight: 600;
}

.prose .link {
  color: var(--color-text);
}

.doc-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 2rem;
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-line);
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-dim);
}

/* Table of contents for legal documents */
.toc {
  margin-top: 0.75rem;
}

.toc__link {
  display: block;
  padding-block: 0.4rem;
  font-size: var(--text-small);
  color: var(--color-text-dim);
  transition: color var(--duration-fast) var(--ease-out);
}

.toc__link:hover {
  color: var(--color-accent-bright);
}

/* --------------------------------------------------------------------------
   10. Forms
   -------------------------------------------------------------------------- */

.form {
  max-width: 34rem;
}

.field + .field {
  margin-top: 1.5rem;
}

.field__label {
  display: block;
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.field__input,
.field__select,
.field__textarea {
  display: block;
  width: 100%;
  padding: 0.85rem 1rem;
  border: 1px solid var(--color-line);
  background-color: var(--color-surface);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--text-body);
  line-height: 1.5;
  transition: border-color var(--duration-fast) var(--ease-out),
    background-color var(--duration-fast) var(--ease-out);
}

.field__input:hover,
.field__select:hover,
.field__textarea:hover {
  border-color: #333333;
}

.field__input::placeholder,
.field__textarea::placeholder {
  color: var(--color-text-dim);
}

.field__select {
  appearance: none;
  padding-right: 2.75rem;
  /* Explicit colors keep the native control readable on Windows dark mode. */
  background-image: linear-gradient(45deg, transparent 50%, var(--color-text-muted) 50%),
    linear-gradient(135deg, var(--color-text-muted) 50%, transparent 50%);
  background-position: calc(100% - 1.25rem) 55%, calc(100% - 1rem) 55%;
  background-size: 0.3rem 0.3rem, 0.3rem 0.3rem;
  background-repeat: no-repeat;
}

.field__select option {
  background-color: var(--color-surface);
  color: var(--color-text);
}

.field__textarea {
  min-height: 9rem;
  resize: vertical;
}

.field__hint {
  margin-top: 0.5rem;
  font-size: var(--text-small);
  color: var(--color-text-dim);
}

.form__actions {
  margin-top: 2rem;
}

.form__note {
  margin-top: 1rem;
  font-size: var(--text-small);
  color: var(--color-text-dim);
  max-width: 40ch;
}

/* --------------------------------------------------------------------------
   11. Reduced motion
   -------------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

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

  .link-list__link:hover {
    padding-inline-start: 0;
  }

  .btn:active {
    transform: none;
  }
}