/* =============================================================================
   COMPONENTS.CSS
   -----------------------------------------------------------------------------
   Reusable, brand-neutral components reverse-engineered from the source's SCSS
   modules (button-base / button-pill, header nav, highlight, immersive-card,
   carousel-*, cards-side-by-side, faq, qr-pane, phone-module, footnotes).

   Every component references tokens only. States covered: default / hover /
   active / focus / disabled, plus transitions.
   ========================================================================== */

/* =========================================================================
   BUTTONS
   The source uses a layered button: an outer container + inner label, a "pill"
   shape, and a signature row of tiny "LED" dots that light up on hover.
   ========================================================================= */
.ds-btn {
  --_bg: var(--brand-primary);
  --_fg: var(--text-on-dark);
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.9em 1.6em;
  font-family: var(--font-sans);
  font-weight: var(--weight-medium);
  font-size: var(--fluid-16);
  line-height: 1;
  color: var(--_fg);
  background: var(--_bg);
  border-radius: var(--radius-pill);
  isolation: isolate;
  overflow: hidden;
  transition:
    background var(--dur-base) var(--ease-linear),
    color var(--dur-base) var(--ease-linear),
    transform var(--dur-base) var(--ease-out),
    box-shadow var(--dur-base) var(--ease-out);
  will-change: transform;
}
/* Swept sheen highlight */
.ds-btn::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--gradient-sheen);
  background-size: 250% 100%;
  background-position: 150% 0;
  opacity: 0;
  transition: background-position 0.6s var(--ease-out), opacity var(--dur-base);
}
.ds-btn:hover  { transform: translateY(-1px); box-shadow: var(--shadow-elevated); }
.ds-btn:hover::before { opacity: 1; background-position: -50% 0; }
.ds-btn:active { transform: translateY(0) scale(0.985); }
.ds-btn:disabled, .ds-btn[aria-disabled="true"] {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* Variants -------------------------------------------------------------- */
.ds-btn[data-variant="primary"] {
  --_bg: var(--brand-primary);
  --_fg: var(--text-on-dark);
}
.ds-btn[data-variant="accent"] {
  --_bg: var(--brand-accent);
  --_fg: var(--text-on-accent);
}
.ds-btn[data-variant="secondary"] {
  --_bg: transparent;
  --_fg: var(--text-strong);
  box-shadow: inset 0 0 0 1.5px var(--border-strong);
}
.ds-btn[data-variant="secondary"]:hover {
  --_bg: var(--surface-raised);
  box-shadow: inset 0 0 0 1.5px var(--border-strong), var(--shadow-card);
}
.ds-btn[data-variant="tertiary"] {
  --_bg: transparent;
  --_fg: var(--text-strong);
  padding-inline: 0.4em;
}
.ds-btn[data-variant="tertiary"]::after {
  content: "";
  position: absolute;
  left: 0.4em; right: 0.4em; bottom: 0.55em;
  height: 1.5px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-base) var(--ease-out);
}
.ds-btn[data-variant="tertiary"]:hover { transform: none; box-shadow: none; }
.ds-btn[data-variant="tertiary"]:hover::after { transform: scaleX(1); }

.ds-btn--sm { font-size: var(--fluid-14); padding: 0.7em 1.2em; }
.ds-btn--lg { font-size: var(--fluid-20); padding: 1em 2em; }
.ds-btn--block { display: flex; width: 100%; }

/* LED dots — the signature button detail. Place inside a button:
   <span class="ds-led"><i></i><i></i><i></i></span> */
.ds-led {
  display: inline-flex;
  gap: 4px;
  align-items: center;
}
.ds-led i {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--led-color-off);
  transition: background var(--dur-fast) linear, box-shadow var(--dur-fast) linear;
}
.ds-btn:hover .ds-led i { background: var(--led-color-on); box-shadow: 0 0 6px var(--led-color-on); }
.ds-btn:hover .ds-led i:nth-child(2) { transition-delay: 0.05s; }
.ds-btn:hover .ds-led i:nth-child(3) { transition-delay: 0.1s; }

/* Icon button (circular) */
.ds-icon-btn {
  display: inline-grid;
  place-items: center;
  width: 2.75em; height: 2.75em;
  border-radius: 50%;
  background: var(--surface-raised);
  box-shadow: var(--shadow-card);
  transition: transform var(--dur-base) var(--ease-out), background var(--dur-base);
}
.ds-icon-btn:hover { transform: translateY(-1px); background: var(--surface-sunken); }
.ds-icon-btn:active { transform: scale(0.94); }

/* =========================================================================
   BADGES / CHIPS / PILLS
   ========================================================================= */
.ds-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.4em 0.85em;
  font-family: var(--font-mono);
  font-size: var(--fluid-12);
  letter-spacing: var(--ls-mono);
  text-transform: uppercase;
  color: var(--text-body);
  background: var(--surface-raised);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-pill);
}
.ds-badge[data-tone="accent"] { color: var(--text-on-accent); background: var(--brand-accent); border-color: transparent; }
.ds-badge[data-tone="support"]{ color: var(--brand-primary); background: var(--color-mint-200); border-color: transparent; }
.ds-badge .ds-badge-dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

.ds-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.5em 1em;
  font-size: var(--fluid-14);
  color: var(--text-strong);
  background: var(--surface-sunken);
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: background var(--dur-base), color var(--dur-base);
}
.ds-chip:hover { background: var(--color-paper-300); }
.ds-chip[aria-selected="true"] { background: var(--brand-primary); color: var(--text-on-dark); }

/* =========================================================================
   NAVBAR — glassmorphic, sticky. Horizontal (desktop) + drawer (mobile).
   ========================================================================= */
.ds-nav {
  position: sticky;
  top: var(--space-3);
  z-index: var(--z-nav);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  padding: 0.6rem 0.6rem 0.6rem 1.25rem;
  margin-inline: var(--gutter-outer);
  border-radius: var(--radius-pill);
  background: var(--glass-fill-light);
  border: 1px solid var(--border-hairline);
  backdrop-filter: blur(var(--blur-lg));
  -webkit-backdrop-filter: blur(var(--blur-lg));
  transition: background var(--dur-slow), box-shadow var(--dur-slow);
}
.ds-nav[data-tone="dark"] {
  background: var(--glass-fill);
  border-color: rgb(255 255 255 / 0.1);
  color: var(--text-on-dark);
}
.ds-nav.is-scrolled { box-shadow: var(--shadow-card); }
.ds-nav-brand { font-weight: var(--weight-medium); font-size: var(--fluid-20); letter-spacing: -0.01em; }
.ds-nav-links { display: flex; align-items: center; gap: var(--space-5); }
.ds-nav-link {
  position: relative;
  font-size: var(--fluid-16);
  color: inherit;
  opacity: 0.85;
  transition: opacity var(--dur-base);
}
.ds-nav-link::after {
  content: "";
  position: absolute; left: 0; bottom: -4px;
  width: 100%; height: 1.5px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-base) var(--ease-out);
}
.ds-nav-link:hover { opacity: 1; }
.ds-nav-link:hover::after { transform: scaleX(1); }
.ds-nav-toggle { display: none; }

/* Mobile drawer (vertical nav) */
.ds-drawer {
  position: fixed;
  inset: 0;
  z-index: var(--z-drawer);
  display: flex;
  flex-direction: column;
  padding: var(--space-6) var(--gutter-outer);
  background: var(--surface-inverse);
  color: var(--text-on-dark);
  transform: translateY(-100%);
  transition: transform var(--dur-slow) var(--ease-in-out);
  visibility: hidden;
}
.ds-drawer.is-open { transform: translateY(0); visibility: visible; }
.ds-drawer .ds-drawer-link {
  font-size: var(--fluid-40);
  font-weight: var(--weight-light);
  padding-block: var(--space-3);
  border-bottom: 1px solid rgb(255 255 255 / 0.12);
}

/* =========================================================================
   HERO
   ========================================================================= */
.ds-hero {
  position: relative;
  display: grid;
  gap: var(--space-6);
  padding-block: clamp(3rem, 8vw, 7rem);
  align-items: center;
}
.ds-hero-eyebrow { margin-bottom: var(--space-2); }
.ds-hero-title { max-width: 14ch; }
.ds-hero-lede { max-width: 44ch; }
.ds-hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-2); }
/* Ambient warm glow behind hero art */
.ds-hero-glow {
  position: absolute;
  inset: -20% -10% auto auto;
  width: 60%; aspect-ratio: 1;
  background: var(--gradient-glow);
  filter: blur(var(--blur-2xl));
  z-index: 0;
  pointer-events: none;
}

/* =========================================================================
   GLASS  — the surface primitive every card composes.
   -------------------------------------------------------------------------
   Three stacked layers make a pane read as glass rather than as "a div with
   some transparency":
     1. the element itself  — gradient tint + backdrop blur + specular top edge
     2. ::before            — a 1px GOLD gradient outline, revealed on hover
                              (drawn with the two-mask trick so it can be a
                              gradient, which border-color cannot be)
     3. ::after             — a pointer-tracked highlight (script.js writes
                              --mx / --my), also hover-only
   Panes need something behind them to blur — see .ds-aura in layout.css.

   .ds-card / .ds-feature-card are listed alongside .ds-glass in every rule
   below so that existing card markup becomes glass with no HTML change; use
   the bare .ds-glass class to make any other element a pane.
   ========================================================================= */
.ds-glass,
.ds-card,
.ds-feature-card {
  position: relative;
  background: var(--glass-tint);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--glass-shadow);
  transition:
    background var(--dur-slow) var(--ease-out),
    border-color var(--dur-slow) var(--ease-out),
    box-shadow var(--dur-slow) var(--ease-out),
    transform var(--dur-base) var(--ease-out);
}
/* 2 — gold gradient outline. Fills the padding-box, then punches the content
   box out of itself, leaving exactly the 1px ring. */
.ds-glass::before,
.ds-card::before,
.ds-feature-card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  padding: 1px;
  border-radius: inherit;
  background: var(--gradient-gold-hair);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-slow) var(--ease-out);
}
/* 3 — pointer spotlight */
.ds-glass::after,
.ds-card::after,
.ds-feature-card::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  border-radius: inherit;
  background: var(--glass-spotlight);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-slow) var(--ease-out);
}
.ds-glass > *,
.ds-card > *,
.ds-feature-card > * { position: relative; z-index: 2; }

.ds-glass:hover,
.ds-card:hover,
.ds-feature-card:hover {
  background: var(--glass-tint-strong);
  border-color: transparent;
  box-shadow: var(--glass-shadow-lit);
}
.ds-glass:hover::before, .ds-glass:hover::after,
.ds-card:hover::before, .ds-card:hover::after,
.ds-feature-card:hover::before, .ds-feature-card:hover::after { opacity: 1; }

/* Touch devices: no cursor to track, so the spotlight is dead weight. */
@media (hover: none) {
  .ds-glass::after,
  .ds-card::after,
  .ds-feature-card::after { content: none; }
}

/* Fallback — without backdrop-filter the tint alone is far too transparent to
   read text on, so fall back to the opaque raised surface. */
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .ds-glass, .ds-glass:hover,
  .ds-card, .ds-card:hover,
  .ds-feature-card, .ds-feature-card:hover { background: var(--surface-raised); }
}

/* =========================================================================
   CARDS
   ========================================================================= */
.ds-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-6);
  border-radius: var(--radius-block-medium);
  overflow: clip;
}
.ds-card:hover { transform: translateY(-4px); }
.ds-card-media {
  border-radius: var(--radius-sm);
  aspect-ratio: 16 / 10;
  background: var(--gradient-support);
  overflow: clip;
}
.ds-card-title { font-size: var(--fluid-24); font-weight: var(--weight-medium); letter-spacing: var(--ls-display); }
.ds-card-text  { color: var(--text-body); font-size: var(--fluid-16); }

/* Feature card — glass pane on the signature chat-bubble radius (bottom-left
   corner squared off). That asymmetry is the system's fingerprint: keep it. */
.ds-feature-card {
  padding: var(--space-6);
  border-radius: var(--radius-bubble-lg);
  color: var(--text-strong);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.ds-feature-card:hover { transform: translateY(-4px); }
/* Opaque tone overrides — these opt OUT of glass on purpose (a solid card in a
   row of panes is how a "featured" item earns attention). */
.ds-feature-card[data-tone="inverse"],
.ds-feature-card[data-tone="inverse"]:hover { background: var(--surface-inverse); color: var(--text-on-dark); backdrop-filter: none; }
.ds-feature-card[data-tone="support"],
.ds-feature-card[data-tone="support"]:hover { background: var(--gradient-support); backdrop-filter: none; }
.ds-feature-card[data-tone="accent"],
.ds-feature-card[data-tone="accent"]:hover  { background: var(--brand-accent); color: var(--text-on-accent); backdrop-filter: none; }
.ds-feature-icon {
  display: grid; place-items: center;
  width: 3rem; height: 3rem;
  border-radius: var(--radius-bubble-sm);
  background: var(--glass-fill-light);
  border: 1px solid var(--border-hairline);
  color: var(--brand-accent);
}

/* Immersive card — large media block with overlaid caption + scrim */
.ds-immersive-card {
  position: relative;
  min-height: clamp(20rem, 40vw, 32rem);
  border-radius: var(--radius-block-large);
  overflow: clip;
  display: flex;
  align-items: flex-end;
  padding: var(--space-6);
  color: var(--text-on-dark);
  background: var(--surface-inverse);
}
.ds-immersive-card::after {
  content: "";
  position: absolute; inset: 0;
  background: var(--gradient-scrim-bottom);
  z-index: 1;
}
.ds-immersive-card > * { position: relative; z-index: 2; }
.ds-immersive-card .ds-immersive-media {
  position: absolute; inset: 0; z-index: 0;
  background: var(--gradient-lav);
}

/* Side-by-side cards row */
.ds-cards-row {
  display: grid;
  gap: var(--gutter-inner);
  grid-template-columns: 1fr;
}

/* =========================================================================
   PHONE MOCKUP  (device frame for app screenshots)
   ========================================================================= */
.ds-phone {
  position: relative;
  width: clamp(15rem, 24vw, 20rem);
  aspect-ratio: 9 / 19.5;
  border-radius: 2.75rem;
  padding: 0.7rem;
  background: var(--surface-inverse-2);
  box-shadow: var(--shadow-ambient-lg);
}
.ds-phone-screen {
  width: 100%; height: 100%;
  border-radius: 2.1rem;
  overflow: clip;
  background: var(--gradient-support);
}
.ds-phone-notch {
  position: absolute;
  top: 0.7rem; left: 50%;
  transform: translateX(-50%);
  width: 35%; height: 1.4rem;
  border-radius: 0 0 1rem 1rem;
  background: var(--surface-inverse-2);
  z-index: 2;
}

/* =========================================================================
   PRICING
   ========================================================================= */
.ds-pricing {
  display: grid;
  gap: var(--gutter-inner);
  grid-template-columns: 1fr;
}
.ds-price-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-6);
  background: var(--surface-raised);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-block-medium);
  transition: transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base);
}
.ds-price-card[data-featured="true"] {
  background: var(--surface-inverse);
  color: var(--text-on-dark);
  border-color: transparent;
  box-shadow: var(--shadow-float);
  transform: scale(1.02);
}
.ds-price-amount { font-size: var(--fluid-56); font-weight: var(--weight-light); letter-spacing: var(--ls-display); line-height: 1; }
.ds-price-period { font-size: var(--fluid-16); color: var(--text-muted); }
.ds-price-features { display: flex; flex-direction: column; gap: var(--space-2); margin-block: var(--space-4); }
.ds-price-features li { display: flex; gap: var(--space-2); font-size: var(--fluid-16); }
.ds-price-features li::before { content: "→"; color: var(--brand-accent); }

/* =========================================================================
   TESTIMONIALS / REVIEWS
   ========================================================================= */
.ds-review {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-6);
  background: var(--surface-raised);
  border-radius: var(--radius-bubble-md);
  box-shadow: var(--shadow-card);
  min-width: min(80vw, 22rem);
}
.ds-review-stars { display: flex; gap: 2px; color: var(--brand-accent); }
.ds-review-quote { font-size: var(--fluid-20); line-height: var(--lh-snug); color: var(--text-strong); }
.ds-review-author { display: flex; align-items: center; gap: var(--space-3); margin-top: auto; }
.ds-review-avatar { width: 2.5rem; height: 2.5rem; border-radius: 50%; background: var(--gradient-lav); }
.ds-review-name { font-weight: var(--weight-medium); font-size: var(--fluid-14); }
.ds-review-meta { font-size: var(--fluid-12); color: var(--text-muted); }

/* =========================================================================
   CAROUSEL  (horizontal scroll-snap + skew variant + dots)
   ========================================================================= */
.ds-carousel { position: relative; }
.ds-carousel-track {
  display: flex;
  gap: var(--gutter-inner);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-padding-inline: var(--gutter-outer);
  padding-inline: var(--gutter-outer);
  padding-block: var(--space-2);
  scrollbar-width: none;
}
.ds-carousel-track::-webkit-scrollbar { display: none; }
.ds-carousel-track > * { scroll-snap-align: start; flex: 0 0 auto; }

/* Skew carousel — items tilt slightly as a stylistic flourish */
.ds-carousel--skew .ds-carousel-track > * {
  transform: rotate(-2deg);
  transition: transform var(--dur-slow) var(--ease-out);
}
.ds-carousel--skew .ds-carousel-track > *:nth-child(even) { transform: rotate(2deg); }
.ds-carousel--skew .ds-carousel-track > *:hover { transform: rotate(0); }

.ds-carousel-dots { display: flex; gap: var(--space-2); justify-content: center; margin-top: var(--space-5); }
.ds-carousel-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--ink-a20);
  transition: background var(--dur-base), transform var(--dur-base);
}
.ds-carousel-dot[aria-current="true"] { background: var(--brand-primary); transform: scale(1.3); }

.ds-carousel-arrows { display: flex; gap: var(--space-2); }

/* =========================================================================
   FAQ / ACCORDION
   ========================================================================= */
/* Each item is its own glass pane rather than a row in a ruled list — the
   stack reads as a set of objects, and the open one can lift off the others. */
.ds-accordion { display: flex; flex-direction: column; gap: var(--space-3); }
.ds-accordion-item {
  border-radius: var(--radius-block-medium);
  padding-inline: var(--space-5);
  background: var(--glass-tint);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  transition: background var(--dur-slow) var(--ease-out),
              border-color var(--dur-slow) var(--ease-out),
              box-shadow var(--dur-slow) var(--ease-out);
}
.ds-accordion-item:hover { border-color: var(--border-strong); }
.ds-accordion-item[aria-expanded="true"] {
  background: var(--glass-tint-strong);
  box-shadow: var(--glass-shadow);
}
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .ds-accordion-item { background: var(--surface-raised); }
}
.ds-accordion-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  width: 100%;
  padding-block: var(--space-5);
  text-align: left;
  font-size: var(--fluid-22);
  font-weight: var(--weight-medium);
  color: var(--text-strong);
  transition: color var(--dur-base);
}
.ds-accordion-trigger:hover { color: var(--brand-accent); }
.ds-accordion-icon {
  /* position:relative is load-bearing: the +/− strokes are absolutely
     positioned pseudo-elements and would otherwise anchor to the section. */
  position: relative;
  flex: 0 0 auto;
  width: 1.75rem; height: 1.75rem;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--glass-fill-light);
  border: 1px solid var(--border-hairline);
  color: var(--brand-accent-vivid);
  transition: transform var(--dur-slow) var(--ease-out), background var(--dur-base), color var(--dur-base);
}
.ds-accordion-icon::before,
.ds-accordion-icon::after {
  content: "";
  position: absolute;
  width: 12px; height: 1.5px;
  background: currentColor;
  transition: transform var(--dur-slow) var(--ease-out);
}
.ds-accordion-icon::after { transform: rotate(90deg); }
.ds-accordion-item[aria-expanded="true"] .ds-accordion-icon {
  background: var(--brand-accent);
  border-color: transparent;
  color: var(--text-on-accent);
}
.ds-accordion-item[aria-expanded="true"] .ds-accordion-icon::after { transform: rotate(0); }
.ds-accordion-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--dur-slow) var(--ease-in-out);
}
.ds-accordion-item[aria-expanded="true"] .ds-accordion-panel { grid-template-rows: 1fr; }
.ds-accordion-panel > div { overflow: hidden; }
.ds-accordion-panel p { padding-bottom: var(--space-5); color: var(--text-body); font-size: var(--fluid-16); max-width: 60ch; }

/* =========================================================================
   TABS
   ========================================================================= */
.ds-tabs { display: flex; flex-direction: column; gap: var(--space-5); }
.ds-tablist {
  display: inline-flex;
  gap: var(--space-1);
  padding: var(--space-1);
  background: var(--surface-sunken);
  border-radius: var(--radius-pill);
  align-self: flex-start;
}
.ds-tab {
  padding: 0.6em 1.2em;
  border-radius: var(--radius-pill);
  font-size: var(--fluid-14);
  color: var(--text-body);
  transition: background var(--dur-base), color var(--dur-base);
}
.ds-tab[aria-selected="true"] { background: var(--surface-raised); color: var(--text-strong); box-shadow: var(--shadow-card); }
.ds-tabpanel[hidden] { display: none; }

/* =========================================================================
   INPUTS / FORMS
   ========================================================================= */
.ds-field { display: flex; flex-direction: column; gap: var(--space-2); }
.ds-label { font-size: var(--fluid-14); font-weight: var(--weight-medium); color: var(--text-strong); }
.ds-input, .ds-textarea, .ds-select {
  width: 100%;
  padding: 0.85em 1em;
  font-size: var(--fluid-16);
  color: var(--text-strong);
  background: var(--surface-raised);
  border: 1.5px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  transition: border-color var(--dur-base), box-shadow var(--dur-base);
}
.ds-input::placeholder, .ds-textarea::placeholder { color: var(--text-muted); }
.ds-input:hover, .ds-textarea:hover, .ds-select:hover { border-color: var(--border-strong); }
.ds-input:focus, .ds-textarea:focus, .ds-select:focus {
  outline: none;
  border-color: var(--brand-accent);
  box-shadow: 0 0 0 3px rgb(207 123 79 / 0.15);
}
.ds-input[aria-invalid="true"] { border-color: #c0392b; }
.ds-input:disabled { opacity: 0.5; cursor: not-allowed; }
.ds-textarea { min-height: 7rem; resize: vertical; }
.ds-help { font-size: var(--fluid-12); color: var(--text-muted); }

/* Input group (e.g. email + submit) */
.ds-input-group {
  display: flex;
  gap: var(--space-2);
  padding: var(--space-1);
  background: var(--surface-raised);
  border: 1.5px solid var(--border-hairline);
  border-radius: var(--radius-pill);
}
.ds-input-group .ds-input { border: none; background: none; border-radius: var(--radius-pill); }
.ds-input-group .ds-input:focus { box-shadow: none; }

/* =========================================================================
   QR PANE  (app-download prompt)
   ========================================================================= */
.ds-qr {
  display: inline-flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  background: var(--surface-raised);
  border-radius: var(--radius-block-medium);
  box-shadow: var(--shadow-card);
}
.ds-qr-code {
  width: 6rem; height: 6rem;
  border-radius: var(--radius-sm);
  background:
    repeating-conic-gradient(var(--brand-primary) 0% 25%, transparent 0% 50%) 0 / 1rem 1rem;
  background-color: var(--surface-raised);
  border: 4px solid var(--surface-raised);
}

/* =========================================================================
   MODAL / DIALOG
   ========================================================================= */
.ds-modal-overlay {
  position: fixed; inset: 0;
  z-index: var(--z-modal);
  display: grid; place-items: center;
  padding: var(--gutter-outer);
  background: rgb(41 18 16 / 0.30);
  backdrop-filter: blur(var(--blur-sm));
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur-slow), visibility var(--dur-slow);
}
.ds-modal-overlay.is-open { opacity: 1; visibility: visible; }
.ds-modal {
  width: min(32rem, 100%);
  max-height: 90vh;
  overflow: auto;
  padding: var(--space-7);
  background: var(--surface-raised);
  border-radius: var(--radius-block-medium);
  box-shadow: var(--shadow-float);
  transform: translateY(16px) scale(0.98);
  transition: transform var(--dur-slow) var(--ease-out);
}
.ds-modal-overlay.is-open .ds-modal { transform: translateY(0) scale(1); }

/* =========================================================================
   TIMELINE
   ========================================================================= */
.ds-timeline { display: flex; flex-direction: column; gap: var(--space-6); }
.ds-timeline-item {
  position: relative;
  padding-left: var(--space-6);
  border-left: 2px solid var(--border-hairline);
  padding-bottom: var(--space-2);
}
.ds-timeline-item::before {
  content: "";
  position: absolute;
  left: -7px; top: 2px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--brand-accent);
  box-shadow: 0 0 0 4px var(--surface-page);
}
.ds-timeline-time { font-family: var(--font-mono); font-size: var(--fluid-12); color: var(--text-muted); text-transform: uppercase; letter-spacing: var(--ls-mono); }

/* =========================================================================
   TOOLTIP
   ========================================================================= */
.ds-tooltip { position: relative; display: inline-flex; }
.ds-tooltip-bubble {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  padding: 0.5em 0.8em;
  font-size: var(--fluid-12);
  white-space: nowrap;
  color: var(--text-on-dark);
  background: var(--glass-fill);
  border-radius: var(--radius-xs);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-base), transform var(--dur-base);
}
.ds-tooltip:hover .ds-tooltip-bubble { opacity: 1; transform: translateX(-50%) translateY(0); }

/* =========================================================================
   FOOTER / FOOTNOTES
   ========================================================================= */
.ds-footer {
  padding-block: var(--space-8) var(--space-6);
  background: var(--surface-inverse);
  color: var(--text-on-dark);
  border-radius: var(--radius-block-large) var(--radius-block-large) 0 0;
}
.ds-footer-grid {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: 1fr;
}
.ds-footer-col-title { font-family: var(--font-mono); text-transform: uppercase; font-size: var(--fluid-12); letter-spacing: var(--ls-mono); color: rgb(248 246 242 / 0.5); margin-bottom: var(--space-3); }
.ds-footer-link { display: block; padding-block: var(--space-1); opacity: 0.8; transition: opacity var(--dur-base); }
.ds-footer-link:hover { opacity: 1; }
.ds-footnote { font-size: var(--fluid-12); color: rgb(248 246 242 / 0.5); line-height: var(--lh-relaxed); }
.ds-footer-bottom {
  display: flex; flex-wrap: wrap; gap: var(--space-4);
  justify-content: space-between;
  margin-top: var(--space-7);
  padding-top: var(--space-5);
  border-top: 1px solid rgb(255 255 255 / 0.12);
}

/* =========================================================================
   DIVIDERS / MISC
   ========================================================================= */
.ds-divider { height: 1px; background: var(--border-hairline); border: 0; }
.ds-marquee-mask {
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}