/* ============================================================
   BLKPVNTHR.OS product surfaces — asmaa.dev
   Additive layer. Loaded AFTER styles.css.
   The "dark bands" are the product's own world (black + purple +
   monospace, matching os.blkpvnthr.com). The light sections remain
   Asmaa's existing personal styling and are untouched.
   ============================================================ */

:root {
  /* Product surfaces */
  --os-ink: #08080c;
  --os-ink-1: #0f0f16;
  --os-ink-2: #16161f;
  --os-line: #262633;
  --os-line-brand: rgba(177, 75, 249, 0.28);

  /* Brand — carried over from the existing site palette */
  --os-brand: #b14bf9;
  --os-brand-2: #a152f5;
  --os-brand-soft: rgba(177, 75, 249, 0.12);
  --os-glow: rgba(177, 75, 249, 0.35);

  /* Live indicator */
  --os-live: #3fb950;
  --os-live-glow: rgba(63, 185, 80, 0.45);

  /* Text on dark */
  --os-text: #f2f2f7;
  --os-text-2: #b8b8c6;
  --os-text-3: #7c7c8c;

  /* Type */
  --os-mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  --os-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;

  /* Rhythm */
  --os-r1: 6px;
  --os-r2: 12px;
  --os-r3: 20px;
  --os-maxw: 1120px;
  --os-focus: 0 0 0 2px var(--os-ink), 0 0 0 5px var(--os-glow);
}

/* ---------- Global quality floor ---------- */

:where(a, button, input, textarea, summary, [tabindex]):focus-visible {
  outline: none;
  box-shadow: var(--os-focus);
  border-radius: var(--os-r1);
}

html {
  scroll-behavior: smooth;
}

/* Prevent sideways scroll without hiding overflowing content vertically. */
html,
body {
  overflow-x: clip;
}

.os-skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  padding: 0.75rem 1.25rem;
  background: var(--os-brand);
  color: #fff;
  font: 600 0.9rem/1 var(--os-sans);
  border-radius: 0 0 var(--os-r1) 0;
}
.os-skip:focus {
  left: 0;
}

.os-vh {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* ============================================================
   Site header — one dark bar across every page
   ============================================================ */

.os-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--os-ink);
  border-bottom: 1px solid var(--os-line);
}

.os-nav {
  max-width: var(--os-maxw);
  margin: 0 auto;
  padding: 0.6rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.os-nav__brand {
  font: 300 0.72rem/1 var(--os-sans);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--os-text);
  text-decoration: none;
  white-space: nowrap;
  margin-right: auto;
}
.os-nav__brand:hover {
  color: #fff;
}

/* Mobile toggle */
.os-nav__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--os-line);
  border-radius: var(--os-r1);
  color: var(--os-text);
  cursor: pointer;
}
.os-nav__toggle svg {
  width: 20px;
  height: 20px;
}
.os-nav__toggle[aria-expanded="true"] .os-nav__icon-open,
.os-nav__toggle[aria-expanded="false"] .os-nav__icon-close {
  display: none;
}

.os-nav__menu {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.os-nav__link {
  display: block;
  padding: 0.5rem 0.7rem;
  font: 400 0.85rem/1 var(--os-sans);
  color: var(--os-text-2);
  text-decoration: none;
  border-radius: var(--os-r1);
  white-space: nowrap;
  transition: color 0.15s ease, background 0.15s ease;
}
.os-nav__link:hover {
  color: var(--os-text);
  background: rgba(255, 255, 255, 0.05);
}
.os-nav__link[aria-current="page"] {
  color: #fff;
  background: var(--os-brand-soft);
}

/* The launch action — the only button in the bar */
.os-nav__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-left: 0.6rem;
  padding: 0.6rem 1.1rem;
  font: 600 0.72rem/1 var(--os-sans);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--os-brand);
  text-decoration: none;
  white-space: nowrap;
  background: transparent;
  border: 1px solid var(--os-brand);
  border-radius: 0;
  transition: background 0.18s ease, color 0.18s ease;
}
.os-nav__cta:hover {
  color: #fff;
  background: rgba(177, 75, 249, 0.16);
}

@media (max-width: 991px) {
  .os-nav__menu {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.5rem 1.25rem 1.1rem;
    background: var(--os-ink);
    border-bottom: 1px solid var(--os-line);
  }
  .os-nav__menu.is-open {
    display: flex;
  }
  .os-nav__link {
    padding: 0.8rem 0.5rem;
    font-size: 1rem;
    border-bottom: 1px solid var(--os-line);
    border-radius: 0;
  }
  /* The launch action must never be hidden on mobile. */
  .os-nav__cta {
    margin: 0.9rem 0 0;
    justify-content: center;
    padding: 0.85rem 1rem;
    font-size: 1rem;
  }
}
@media (min-width: 992px) {
  .os-nav__toggle {
    display: none;
  }
}

/* ============================================================
   Dark product band + shared section furniture
   ============================================================ */

.os-band {
  background: var(--os-ink);
  color: var(--os-text);
  padding: 5rem 0;
  /* Cancel the global `section { padding: 4rem 0 }` in styles.css. */
}
.os-band--tight {
  padding: 3.5rem 0;
}

.os-wrap {
  max-width: var(--os-maxw);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Signature: section eyebrows are shell prompts — the product's own
   vernacular (root@blkpvnthr-os:~$). */
.os-eyebrow {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font: 500 0.75rem/1 var(--os-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--os-brand);
  margin: 0 0 1rem;
}
.os-eyebrow::before {
  content: "$";
  color: var(--os-live);
  font-weight: 700;
}

.os-band h2,
.os-band h3 {
  color: var(--os-text);
}

.os-h2 {
  font: 300 clamp(1.9rem, 3.6vw, 2.7rem) / 1.15 var(--os-sans);
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
  text-wrap: balance;
}

.os-lede {
  font: 300 clamp(1rem, 1.4vw, 1.15rem) / 1.65 var(--os-sans);
  color: var(--os-text-2);
  max-width: 62ch;
  margin: 0 0 2rem;
}

.os-note {
  font: 400 0.85rem/1.6 var(--os-sans);
  color: var(--os-text-3);
  max-width: 70ch;
}

/* Buttons */
.os-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 2rem 0 0;
}
.os-actions--center {
  justify-content: center;
}

/* Outlined, squared, letter-spaced. The purple rule is the button. */
.os-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 1rem 1.75rem;
  font: 600 0.78rem/1 var(--os-sans);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  text-decoration: none;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 0;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.os-btn--primary {
  color: var(--os-brand);
  border-color: var(--os-brand);
}
.os-btn--primary:hover {
  color: #fff;
  background: rgba(177, 75, 249, 0.14);
  border-color: var(--os-brand);
}

.os-btn--ghost {
  color: var(--os-text-2);
  border-color: var(--os-line);
}
.os-btn--ghost:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--os-text-3);
}

/* Live indicator — a link to the running product, not a health readout. */
.os-live {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.4rem 0.85rem 0.4rem 0.7rem;
  font: 500 0.78rem/1 var(--os-mono);
  letter-spacing: 0.06em;
  color: var(--os-text-2);
  text-decoration: none;
  background: rgba(63, 185, 80, 0.08);
  border: 1px solid rgba(63, 185, 80, 0.3);
  border-radius: 999px;
}
.os-live:hover {
  color: #fff;
  border-color: var(--os-live);
}
.os-live__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--os-live);
  box-shadow: 0 0 0 0 var(--os-live-glow);
  animation: os-pulse 2.4s ease-out infinite;
  flex: none;
}
@keyframes os-pulse {
  0% {
    box-shadow: 0 0 0 0 var(--os-live-glow);
  }
  70% {
    box-shadow: 0 0 0 7px rgba(63, 185, 80, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(63, 185, 80, 0);
  }
}

/* ============================================================
   Hero
   ============================================================ */

.os-hero {
  background:
    radial-gradient(1000px 500px at 78% 12%, rgba(177, 75, 249, 0.16), transparent 60%),
    radial-gradient(700px 420px at 8% 92%, rgba(63, 185, 80, 0.06), transparent 60%),
    var(--os-ink);
  color: var(--os-text);
  padding: 4.5rem 0 5rem;
  border-bottom: 1px solid var(--os-line);
}

.os-hero__grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 3.5rem;
  align-items: center;
}
@media (max-width: 900px) {
  .os-hero__grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

.os-hero__title {
  font: 300 clamp(2.1rem, 5vw, 3.5rem) / 1.1 var(--os-sans);
  letter-spacing: -0.03em;
  color: #fff;
  margin: 1.25rem 0 1.25rem;
  text-wrap: balance;
}
.os-hero__title em {
  font-style: normal;
  background: linear-gradient(100deg, var(--os-brand) 0%, #6ea8ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.os-hero__lede {
  font: 300 clamp(1rem, 1.5vw, 1.15rem) / 1.7 var(--os-sans);
  color: var(--os-text-2);
  max-width: 54ch;
  margin: 0;
}
.os-hero__lede strong {
  color: var(--os-text);
  font-weight: 500;
}

.os-hero__hint {
  margin: 1rem 0 0;
  font: 400 0.82rem/1.5 var(--os-mono);
  color: var(--os-text-3);
}

/* ---------- Product frame: a browser chrome around the real UI ---------- */

.os-frame {
  border: 1px solid var(--os-line);
  border-radius: var(--os-r2);
  overflow: hidden;
  background: var(--os-ink-1);
  box-shadow: 0 30px 70px -30px rgba(0, 0, 0, 0.9), 0 0 0 1px var(--os-line-brand);
}
.os-frame__bar {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.6rem 0.85rem;
  background: var(--os-ink-2);
  border-bottom: 1px solid var(--os-line);
}
.os-frame__dots {
  display: flex;
  gap: 0.35rem;
  flex: none;
}
.os-frame__dots i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #3a3a48;
}
.os-frame__url {
  font: 400 0.72rem/1 var(--os-mono);
  color: var(--os-text-3);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.os-frame img,
.os-frame video {
  display: block;
  width: 100%;
  height: auto;
}

/* Live embed of the running product. Fixed aspect ratio so the frame reserves
   its space before the iframe loads (no layout shift). */
.os-frame__open {
  margin-left: auto;
  flex: none;
  font: 500 0.72rem/1 var(--os-mono);
  color: var(--os-text-3);
  text-decoration: none;
  white-space: nowrap;
}
.os-frame__open:hover {
  color: #fff;
}

.os-embed__viewport {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  background: var(--os-ink);
}
.os-embed__viewport iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}
/* The OS is a desktop-shaped application. Below the breakpoint the embed gets
   taller rather than shrinking its UI into illegibility. */
@media (max-width: 700px) {
  .os-embed__viewport {
    aspect-ratio: 3 / 4;
  }
}

figure.os-shot {
  margin: 0;
}
.os-shot figcaption {
  margin-top: 0.75rem;
  font: 400 0.82rem/1.5 var(--os-sans);
  color: var(--os-text-3);
}

/* ============================================================
   Capability grid
   ============================================================ */

.os-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(255px, 1fr));
  gap: 1rem;
}

.os-card {
  padding: 1.4rem;
  background: var(--os-ink-1);
  border: 1px solid var(--os-line);
  border-radius: var(--os-r2);
}
.os-card h3 {
  font: 500 1.02rem/1.3 var(--os-sans);
  color: var(--os-text);
  margin: 0 0 0.5rem;
}
.os-card p {
  font: 400 0.9rem/1.6 var(--os-sans);
  color: var(--os-text-2);
  margin: 0;
}
.os-card__tag {
  display: inline-block;
  margin-top: 0.85rem;
  font: 400 0.72rem/1 var(--os-mono);
  color: var(--os-text-3);
}

/* ============================================================
   Carousel — CSS scroll-snap. Works with no JS at all (it is just a
   scrollable list); JS only adds the arrow buttons and end-state.
   ============================================================ */

.os-carousel {
  margin-top: 1.5rem;
  /* Bound the nested horizontal scroller so its content extent can't inflate
     the ancestors' reported scrollWidth. */
  overflow-x: clip;
}

.os-carousel__hint {
  margin: 0 0 1rem;
  font: 400 0.85rem/1.5 var(--os-sans);
  color: var(--os-text-3);
}

/* Track flanked by the two arrow buttons. */
.os-carousel__stage {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.os-carousel__stage > .os-carousel__track {
  flex: 1 1 auto;
  min-width: 0;
}
.os-carousel__btn--prev,
.os-carousel__btn--next {
  flex: none;
  align-self: center;
}

.os-carousel__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  color: var(--os-text);
  background: var(--os-ink-1);
  border: 1px solid var(--os-line);
  border-radius: 50%;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease, opacity 0.15s ease;
}
.os-carousel__btn svg {
  width: 18px;
  height: 18px;
}
.os-carousel__btn:hover:not(:disabled) {
  background: var(--os-ink-2);
  border-color: var(--os-brand);
}
.os-carousel__btn:disabled {
  opacity: 0.35;
  cursor: default;
}

/* On narrow screens the flanking arrows would eat the card width, so swipe is
   the primary control there and they collapse away. (Placed after the base
   .os-carousel__btn rule so it wins.) */
@media (max-width: 640px) {
  .os-carousel__btn--prev,
  .os-carousel__btn--next {
    display: none;
  }
}

.os-carousel__track {
  display: flex;
  gap: 1rem;
  margin: 0;
  padding: 0 0 0.5rem;
  list-style: none;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  /* NB: no `scroll-behavior: smooth` here. Combined with mandatory snap it
     cancels programmatic scrolls (scrollLeft snaps straight back to 0).
     js/site.js passes behavior: "smooth" per-call instead, and honours
     prefers-reduced-motion itself. */
  /* Hide the scrollbar without disabling the scrolling itself. */
  scrollbar-width: none;
}
.os-carousel__track::-webkit-scrollbar {
  display: none;
}

.os-carousel__track > .os-card {
  flex: 0 0 clamp(260px, 30%, 340px);
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
}
/* Push the route tag to the bottom so cards of unequal copy still line up. */
.os-carousel__track > .os-card .os-card__tag {
  margin-top: auto;
  padding-top: 0.85rem;
}

/* Gallery carousel: one large captioned screenshot per view, next one peeking. */
.os-carousel__track > .os-slide {
  flex: 0 0 clamp(280px, 86%, 720px);
  scroll-snap-align: start;
  margin: 0;
}
.os-slide figure {
  margin: 0;
}
.os-slide img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--os-r2);
  border: 1px solid var(--os-line);
}
.os-slide figcaption {
  margin-top: 0.85rem;
  font: 400 0.88rem/1.6 var(--os-sans);
  color: var(--os-text-3);
}

/* Click-to-expand. site.js wraps each slide image in this button. */
.os-lightbox-trigger {
  display: block;
  width: 100%;
  padding: 0;
  margin: 0;
  border: 0;
  background: none;
  cursor: zoom-in;
  border-radius: var(--os-r2);
}
.os-lightbox-trigger:focus-visible {
  box-shadow: var(--os-focus);
}

.os-lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.1rem;
  padding: 5vmin;
  background: rgba(4, 4, 8, 0.92);
}
.os-lightbox[hidden] {
  display: none;
}
.os-lightbox__img {
  max-width: min(1400px, 96vw);
  max-height: 82vh;
  width: auto;
  height: auto;
  border-radius: var(--os-r2);
  border: 1px solid var(--os-line);
}
.os-lightbox__cap {
  margin: 0;
  max-width: 72ch;
  text-align: center;
  font: 400 0.9rem/1.6 var(--os-sans);
  color: var(--os-text-2);
}
.os-lightbox__close {
  position: absolute;
  top: 1.1rem;
  right: 1.1rem;
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--os-text);
  background: var(--os-ink-1);
  border: 1px solid var(--os-line);
  border-radius: 50%;
  cursor: pointer;
}
.os-lightbox__close:hover {
  color: #fff;
  border-color: var(--os-brand);
}

/* Case-study carousel: the track is also .os-cases, but as a flex carousel the
   grid rules must not apply. Reset display and give each case a fixed width. */
.os-carousel__track.os-cases {
  display: flex;
  grid-template-columns: none;
}
.os-carousel__track > .os-case {
  flex: 0 0 clamp(280px, 82%, 360px);
  scroll-snap-align: start;
}
.os-carousel__track > .os-case .os-case__media img,
.os-carousel__track > .os-case .os-case__media video {
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: left top;
}

/* Tech chips */
.os-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.os-chips li {
  padding: 0.4rem 0.7rem;
  font: 400 0.78rem/1 var(--os-mono);
  color: var(--os-text-2);
  background: var(--os-ink-1);
  border: 1px solid var(--os-line);
  border-radius: var(--os-r1);
}

/* Key/value spec list */
.os-spec {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem 2rem;
  margin: 0;
}
.os-spec dt {
  font: 500 0.72rem/1 var(--os-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--os-brand);
  margin-bottom: 0.4rem;
}
.os-spec dd {
  font: 400 0.92rem/1.55 var(--os-sans);
  color: var(--os-text-2);
  margin: 0;
}

/* ============================================================
   Architecture — a real node/edge graph, not a picture of one
   ============================================================ */

.os-arch {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.os-arch__layer {
  position: relative;
  padding: 1.25rem 1.25rem 1.25rem 1.5rem;
  background: var(--os-ink-1);
  border: 1px solid var(--os-line);
  border-radius: var(--os-r2);
}
/* The edge between layers. Decorative — the <ol> already encodes order. */
.os-arch__layer:not(:last-child) {
  margin-bottom: 2.25rem;
}
.os-arch__layer:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -2.25rem;
  width: 1px;
  height: 2.25rem;
  background: linear-gradient(180deg, var(--os-brand) 0%, rgba(177, 75, 249, 0.15) 100%);
}

.os-arch__label {
  font: 500 0.72rem/1 var(--os-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--os-brand);
  margin: 0 0 0.9rem;
}

.os-arch__nodes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.6rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.os-arch__node {
  padding: 0.7rem 0.85rem;
  background: var(--os-ink-2);
  border: 1px solid var(--os-line);
  border-left: 2px solid var(--os-brand);
  border-radius: var(--os-r1);
  font: 500 0.88rem/1.3 var(--os-sans);
  color: var(--os-text);
}
.os-arch__node span {
  display: block;
  margin-top: 0.25rem;
  font: 400 0.72rem/1.4 var(--os-mono);
  color: var(--os-text-3);
}
.os-arch__node--provider {
  border-left-color: var(--os-live);
}

/* ============================================================
   Case studies
   ============================================================ */

.os-cases {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.25rem;
}

.os-case {
  display: flex;
  flex-direction: column;
  background: var(--os-ink-1);
  border: 1px solid var(--os-line);
  border-radius: var(--os-r2);
  overflow: hidden;
}
.os-case--flagship {
  grid-column: 1 / -1;
  border-color: var(--os-line-brand);
  box-shadow: 0 0 0 1px var(--os-line-brand), 0 24px 60px -40px var(--os-glow);
}
@media (min-width: 860px) {
  .os-case--flagship {
    flex-direction: row;
    align-items: stretch;
  }
  .os-case--flagship .os-case__media {
    flex: 1 1 46%;
    min-width: 0;
  }
  .os-case--flagship .os-case__body {
    flex: 1 1 54%;
  }
}

.os-case__media {
  background: var(--os-ink-2);
  border-bottom: 1px solid var(--os-line);
}
.os-case__media img,
.os-case__media video {
  display: block;
  width: 100%;
  height: auto;
}
/* A disclaimer inside the media slot renders as a caption strip under the image. */
.os-case__media .os-note {
  margin: 0;
  padding: 0.7rem 1rem;
  border-top: 1px solid var(--os-line);
  font-size: 0.76rem;
  line-height: 1.5;
}
/* Only the side-by-side flagship needs the image to fill its column. */
@media (min-width: 860px) {
  .os-case--flagship .os-case__media img,
  .os-case--flagship .os-case__media video {
    height: 100%;
    object-fit: cover;
    object-position: left top;
  }
}

.os-case__body {
  padding: 1.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.os-case__kicker {
  font: 500 0.7rem/1 var(--os-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--os-text-3);
}
.os-case__kicker b {
  color: var(--os-live);
  font-weight: 600;
}
/* case-studies.html uses h2 here (its h1 is the page title); index.html uses h3. */
.os-case h2,
.os-case h3 {
  font: 500 1.3rem/1.25 var(--os-sans);
  color: #fff;
  margin: 0;
}
.os-case p {
  font: 400 0.92rem/1.65 var(--os-sans);
  color: var(--os-text-2);
  margin: 0;
}
.os-case dl {
  margin: 0.25rem 0 0;
  display: grid;
  gap: 0.6rem;
}
.os-case dt {
  font: 500 0.68rem/1 var(--os-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--os-brand);
}
.os-case dd {
  margin: 0.2rem 0 0;
  font: 400 0.88rem/1.6 var(--os-sans);
  color: var(--os-text-2);
}
.os-case .os-actions {
  margin-top: auto;
  padding-top: 0.75rem;
}

/* ============================================================
   Services
   ============================================================ */

.os-steps {
  counter-reset: step;
  list-style: none;
  margin: 2.5rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(215px, 1fr));
  gap: 1rem;
}
/* Numbering is used here because the engagement path really is a sequence. */
.os-steps li {
  counter-increment: step;
  position: relative;
  padding: 1.25rem 1.25rem 1.25rem 1.25rem;
  background: var(--os-ink-1);
  border: 1px solid var(--os-line);
  border-top: 2px solid var(--os-brand);
  border-radius: var(--os-r2);
}
.os-steps li::before {
  content: counter(step, decimal-leading-zero);
  display: block;
  margin-bottom: 0.6rem;
  font: 600 0.8rem/1 var(--os-mono);
  color: var(--os-brand);
}
.os-steps h3 {
  font: 500 0.98rem/1.3 var(--os-sans);
  color: var(--os-text);
  margin: 0 0 0.4rem;
}
.os-steps p {
  font: 400 0.86rem/1.6 var(--os-sans);
  color: var(--os-text-2);
  margin: 0;
}

/* ============================================================
   Gallery
   ============================================================ */

.os-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}
.os-gallery img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--os-r2);
  border: 1px solid var(--os-line);
}

/* ============================================================
   Footer
   ============================================================ */

.os-footer {
  background: var(--os-ink);
  color: var(--os-text-2);
  border-top: 1px solid var(--os-line);
  padding: 3.5rem 0 2rem;
}
.os-footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2rem;
}
@media (max-width: 760px) {
  .os-footer__grid {
    grid-template-columns: 1fr;
  }
}
.os-footer h2 {
  font: 500 0.72rem/1 var(--os-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--os-text-3);
  margin: 0 0 1rem;
}
.os-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}
.os-footer a {
  color: var(--os-text-2);
  text-decoration: none;
  font: 400 0.9rem/1.4 var(--os-sans);
}
.os-footer a:hover {
  color: #fff;
  text-decoration: underline;
}
.os-footer__brand {
  font: 300 0.78rem/1 var(--os-sans);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--os-text);
  margin: 0 0 0.9rem;
}
.os-footer__blurb {
  font: 400 0.9rem/1.65 var(--os-sans);
  color: var(--os-text-3);
  max-width: 40ch;
  margin: 0;
}
.os-footer__legal {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--os-line);
  font: 400 0.8rem/1.5 var(--os-sans);
  color: var(--os-text-3);
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  justify-content: space-between;
}

/* ============================================================
   Legal pages — long-form prose, measured for reading
   ============================================================ */

.os-legal {
  max-width: 76ch;
}
.os-legal h2 {
  font: 500 1.25rem/1.35 var(--os-sans);
  color: var(--os-text);
  margin: 2.75rem 0 0.9rem;
}
.os-legal h3 {
  font: 500 1rem/1.4 var(--os-sans);
  color: var(--os-text);
  margin: 1.75rem 0 0.6rem;
}
.os-legal p,
.os-legal li {
  font: 400 0.95rem/1.75 var(--os-sans);
  color: var(--os-text-2);
}
.os-legal p {
  margin: 0 0 1rem;
}
.os-legal ul,
.os-legal ol {
  margin: 0 0 1.25rem;
  padding-left: 1.25rem;
}
.os-legal li {
  margin-bottom: 0.5rem;
}
.os-legal a {
  color: var(--os-brand);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.os-legal a:hover {
  color: #fff;
}
.os-legal strong {
  color: var(--os-text);
  font-weight: 600;
}
/* A callout inside legal prose (the "short version", the paper-only box). */
.os-legal .os-card {
  margin: 1.5rem 0 2rem;
  border-left: 2px solid var(--os-brand);
}
.os-legal .os-card p:last-child {
  margin-bottom: 0;
}

/* ============================================================
   Prose links inside dark sections
   Content links (an employer, a school) must not fall back to the
   browser's default blue on a black background. Buttons, nav items and
   the live badge style themselves, so they are excluded.
   ============================================================ */

.os-band a:not(.os-btn):not(.os-nav__link):not(.os-nav__cta):not(.os-live):not(.os-carousel__btn),
.os-hero a:not(.os-btn):not(.os-nav__link):not(.os-nav__cta):not(.os-live) {
  color: var(--os-brand);
  text-decoration: none;
}
.os-band a:not(.os-btn):not(.os-nav__link):not(.os-nav__cta):not(.os-live):not(.os-carousel__btn):hover,
.os-hero a:not(.os-btn):not(.os-nav__link):not(.os-nav__cta):not(.os-live):hover {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* The card body prose in Experience/About carries a subheading link. */
.os-card p a {
  font-weight: 500;
}