/* Studika v2 — shared site layout primitives.
 * Consumed by all 4 variations. Per-variant theme.css overrides accent tokens.
 */

/* Navigation — compact editorial masthead */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px clamp(20px, 3vw, 48px);
  background: color-mix(in oklab, var(--cream-0) 88%, transparent);
  backdrop-filter: saturate(140%) blur(16px);
  -webkit-backdrop-filter: saturate(140%) blur(16px);
  border-bottom: 1px solid color-mix(in oklab, var(--ink-0) 8%, transparent);
  transition: background var(--d-primary) var(--ease-out);
}
.nav[data-hero="true"] {
  background: transparent;
  border-bottom-color: transparent;
  color: var(--cream-0);
}
.nav[data-hero="true"] .nav__kicker,
.nav[data-hero="true"] .nav__brand,
.nav[data-hero="true"] .nav__actions a,
.nav[data-hero="true"] .nav__actions button { color: var(--cream-0); }

.nav__left {
  display: flex;
  align-items: baseline;
  gap: var(--sp-5);
}
.nav__brand {
  font-family: var(--ff-display);
  font-weight: 500;
  font-size: 22px;
  letter-spacing: -0.02em;
  color: var(--ink-0);
  line-height: 1;
}
.nav__kicker {
  font-family: var(--ff-mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.nav__actions {
  display: flex;
  gap: var(--sp-4);
  align-items: center;
}
.nav__actions a {
  font-family: var(--ff-sans);
  font-size: 14px;
  color: var(--ink-1);
  text-decoration: none;
  letter-spacing: -0.005em;
}
.nav__actions a:hover { color: var(--accent-1); }

/* ───── HERO ───── */
.hero {
  position: relative;
  height: 260vh;               /* scroll range for the scrub */
  background: var(--ink-0);
}
.hero__stage {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: hidden;
  background: var(--ink-0);
}
.scrub-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
/* Paint the video into a full-cover position.  The canvas is 1600×900 or 800×450. */
.hero__stage .scrub-canvas {
  object-fit: cover;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-rows: auto 1fr auto;
  padding: clamp(28px, 4vw, 56px) clamp(24px, 3.2vw, 56px) clamp(32px, 4.5vw, 64px);
  pointer-events: none;
  color: var(--cream-0);
  background:
    linear-gradient(to bottom,
      color-mix(in oklab, var(--ink-0) 22%, transparent) 0%,
      color-mix(in oklab, var(--ink-0) 0%, transparent) 26%,
      color-mix(in oklab, var(--ink-0) 0%, transparent) 54%,
      color-mix(in oklab, var(--ink-0) 72%, transparent) 100%);
}
.hero__top {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: var(--sp-5);
}
.hero__kicker {
  font-family: var(--ff-mono);
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 11px;
  opacity: 0.82;
  pointer-events: auto;
}
.hero__edition {
  font-family: var(--ff-mono);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 10.5px;
  opacity: 0.72;
  text-align: right;
  line-height: 1.6;
}
.hero__center {
  align-self: end;
  max-width: 22ch;
  pointer-events: auto;
}
.hero__lede {
  font-family: var(--ff-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  opacity: 0.82;
  margin-bottom: var(--sp-4);
}
.hero__headline {
  font-family: var(--ff-display);
  font-weight: 400;
  font-size: clamp(44px, 6.8vw, 108px);
  line-height: 0.96;
  letter-spacing: -0.022em;
  margin: 0;
  pointer-events: auto;
  color: var(--cream-0);
}
.hero__headline em {
  font-style: italic;
  font-weight: 400;
  color: var(--accent-2, var(--accent-1));
  font-family: var(--ff-display);
}
.hero__bottom {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: var(--sp-6);
  flex-wrap: wrap;
  pointer-events: auto;
}
.hero__sub {
  font-family: var(--ff-sans);
  font-size: clamp(15px, 1.1vw, 18px);
  line-height: 1.5;
  max-width: 52ch;
  opacity: 0.92;
  color: var(--cream-0);
  margin: 0;
}
.hero__cta {
  display: flex;
  gap: var(--sp-3);
  align-items: center;
}

@media (max-width: 900px) {
  .hero { height: 220vh; }
  .hero__center { max-width: 100%; }
  .hero__overlay { padding: 68px 20px 24px; gap: var(--sp-5); }
}

/* ───── BUTTON ───── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
  padding: 14px 22px;
  font-family: var(--ff-sans);
  font-weight: 500;
  font-size: 14.5px;
  letter-spacing: -0.005em;
  border-radius: var(--r-pill);
  border: 1px solid transparent;
  cursor: pointer;
  transition:
    transform var(--d-micro) var(--ease-out),
    box-shadow var(--d-micro) var(--ease-out),
    background var(--d-micro) var(--ease-out),
    color var(--d-micro) var(--ease-out);
  text-decoration: none;
  white-space: nowrap;
}
.btn__arrow {
  display: inline-block;
  transition: transform var(--d-micro) var(--ease-out);
}
.btn:hover .btn__arrow { transform: translateX(3px); }
.btn--primary {
  background: var(--accent-1, var(--ink-0));
  color: var(--accent-ink, var(--cream-0));
}
.btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--sh-2);
}
.btn--ghost {
  background: transparent;
  color: currentColor;
  border-color: color-mix(in oklab, currentColor 40%, transparent);
}
.btn--ghost:hover { background: color-mix(in oklab, currentColor 10%, transparent); }
.btn--lg { padding: 16px 26px; font-size: 15.5px; }

/* ───── SECTIONS ───── */
.section {
  padding: clamp(72px, 10vw, 144px) 0;
  position: relative;
}
.section--tight { padding: clamp(56px, 7vw, 104px) 0; }
.section--ink {
  background: var(--ink-0);
  color: var(--cream-0);
}
.section--ink .section-title,
.section--ink .section-lede,
.section--ink .feature__title,
.section--ink .feature__body { color: var(--cream-0); }
.section--ink .feature__no,
.section--ink .section-label { color: color-mix(in oklab, var(--accent-2, var(--accent-1)) 100%, transparent); }
.section--ink .feature { border-top-color: color-mix(in oklab, var(--cream-0) 18%, transparent); }

.section-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-5);
  margin-bottom: clamp(40px, 5vw, 72px);
  max-width: 920px;
}
.section-label {
  font-family: var(--ff-mono);
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 11px;
  color: var(--accent-1);
}
.section-title {
  font-family: var(--ff-display);
  font-weight: 400;
  font-size: clamp(32px, 4.6vw, 72px);
  line-height: 1.02;
  letter-spacing: -0.022em;
  color: var(--ink-0);
  margin: 0;
  max-width: 22ch;
}
.section-title em {
  font-style: italic;
  color: var(--accent-1);
}
.section-lede {
  font-family: var(--ff-sans);
  font-size: clamp(17px, 1.25vw, 20px);
  line-height: 1.55;
  color: var(--ink-2);
  max-width: 58ch;
  margin: 0;
}

/* ───── GRID / FEATURE ───── */
.three-col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(28px, 3.4vw, 56px);
}
@media (max-width: 900px) {
  .three-col { grid-template-columns: 1fr; gap: 32px; }
}

.feature {
  border-top: 1px solid color-mix(in oklab, var(--ink-0) 14%, transparent);
  padding-top: var(--sp-5);
}
.feature__no {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--accent-1);
  margin-bottom: var(--sp-4);
  text-transform: uppercase;
}
.feature__title {
  font-family: var(--ff-display);
  font-weight: 400;
  font-size: clamp(22px, 2vw, 30px);
  margin: 0 0 var(--sp-3);
  line-height: 1.15;
  letter-spacing: -0.015em;
}
.feature__body {
  font-family: var(--ff-sans);
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--ink-2);
  margin: 0;
}

/* ───── LANGUAGE GRID ───── */
.lang-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: color-mix(in oklab, var(--ink-0) 12%, transparent);
  border: 1px solid color-mix(in oklab, var(--ink-0) 12%, transparent);
  border-radius: var(--r-md);
  overflow: hidden;
}
@media (max-width: 900px) { .lang-grid { grid-template-columns: repeat(2, 1fr); } }

.lang-cell {
  padding: 22px 20px 20px;
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  background: var(--cream-0);
  transition:
    background var(--d-micro) var(--ease-out),
    color var(--d-micro) var(--ease-out);
  min-height: 140px;
}
.lang-cell:hover {
  background: var(--ink-0);
  color: var(--cream-0);
}
.lang-cell:hover .lang-cell__cert,
.lang-cell:hover .lang-cell__native { color: color-mix(in oklab, var(--cream-0) 72%, transparent); }
.lang-cell:hover .lang-cell__name { color: var(--accent-2, var(--accent-1)); }

.lang-cell__native {
  font-family: var(--ff-mono);
  font-size: 11.5px;
  color: var(--ink-3);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.lang-cell__name {
  font-family: var(--ff-display);
  font-size: 30px;
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.015em;
}
.lang-cell__cert {
  font-family: var(--ff-sans);
  font-size: 12.5px;
  color: var(--ink-3);
  margin-top: auto;
  line-height: 1.4;
}

/* ───── STATS RIBBON ───── */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(24px, 2.5vw, 48px);
  border-top: 1px solid color-mix(in oklab, var(--cream-0) 18%, transparent);
  border-bottom: 1px solid color-mix(in oklab, var(--cream-0) 18%, transparent);
  padding: clamp(40px, 5vw, 72px) 0;
}
@media (max-width: 900px) { .stats { grid-template-columns: repeat(2, 1fr); row-gap: 32px; } }

.stat__n {
  font-family: var(--ff-display);
  font-size: clamp(40px, 5vw, 72px);
  font-weight: 400;
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--accent-2, var(--accent-1));
  margin-bottom: var(--sp-3);
}
.stat__label {
  font-family: var(--ff-sans);
  font-size: 13.5px;
  line-height: 1.5;
  opacity: 0.88;
  max-width: 22ch;
}

/* ───── BUNDLES ───── */
.bundles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 2vw, 40px);
}
@media (max-width: 900px) { .bundles { grid-template-columns: 1fr; } }

.bundle {
  background: var(--cream-0);
  border: 1px solid color-mix(in oklab, var(--ink-0) 14%, transparent);
  border-radius: var(--r-lg);
  padding: clamp(24px, 2.4vw, 40px);
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  position: relative;
  transition: border-color var(--d-micro) var(--ease-out), transform var(--d-micro) var(--ease-out);
}
.bundle:hover { border-color: var(--accent-1); transform: translateY(-2px); }
.bundle--featured {
  background: var(--ink-0);
  color: var(--cream-0);
  border-color: var(--ink-0);
}
.bundle--featured .bundle__name,
.bundle--featured .bundle__price,
.bundle--featured .bundle__desc,
.bundle--featured .bundle__features li { color: var(--cream-0); }
.bundle--featured .bundle__price-unit { color: color-mix(in oklab, var(--cream-0) 60%, transparent); }
.bundle--featured .bundle__tag {
  background: var(--accent-2, var(--accent-1));
  color: var(--ink-0);
}

.bundle__tag {
  position: absolute;
  top: -10px;
  left: clamp(24px, 2.4vw, 40px);
  background: var(--accent-1);
  color: var(--cream-0);
  font-family: var(--ff-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 6px 10px;
  border-radius: var(--r-sm);
}
.bundle__name {
  font-family: var(--ff-display);
  font-size: 26px;
  font-weight: 400;
  color: var(--ink-0);
  letter-spacing: -0.01em;
  line-height: 1.1;
}
.bundle__desc {
  font-family: var(--ff-sans);
  font-size: 14px;
  color: var(--ink-3);
  line-height: 1.5;
}
.bundle__price {
  font-family: var(--ff-display);
  font-size: 44px;
  font-weight: 400;
  color: var(--ink-0);
  line-height: 1;
  letter-spacing: -0.015em;
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-top: auto;
}
.bundle__price-unit {
  font-family: var(--ff-mono);
  font-size: 13px;
  color: var(--ink-3);
  letter-spacing: 0.08em;
}
.bundle__features {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.bundle__features li {
  font-family: var(--ff-sans);
  font-size: 14px;
  line-height: 1.5;
  color: var(--ink-2);
  padding-left: 18px;
  position: relative;
}
.bundle__features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 1px;
  background: var(--accent-1);
}

/* ───── EDITORIAL QUOTE / MANIFESTO BLOCK ───── */
.manifesto {
  max-width: 62ch;
  font-family: var(--ff-display);
  font-weight: 400;
  font-size: clamp(26px, 2.8vw, 46px);
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--ink-0);
}
.manifesto em {
  font-style: italic;
  color: var(--accent-1);
}
.pull-byline {
  margin-top: var(--sp-6);
  display: flex;
  gap: var(--sp-4);
  align-items: center;
  font-family: var(--ff-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.pull-byline::before {
  content: '';
  display: block;
  width: 40px;
  height: 1px;
  background: currentColor;
  opacity: 0.4;
}

/* ───── CLOSING CTA ───── */
.close {
  text-align: left;
  padding: clamp(72px, 10vw, 160px) 0;
}
.close__title {
  font-family: var(--ff-display);
  font-weight: 400;
  font-size: clamp(40px, 6vw, 104px);
  line-height: 0.98;
  letter-spacing: -0.025em;
  margin: 0 0 var(--sp-6);
  max-width: 20ch;
}
.close__title em { font-style: italic; color: var(--accent-2, var(--accent-1)); }
.close__sub {
  font-family: var(--ff-sans);
  font-size: clamp(16px, 1.2vw, 19px);
  line-height: 1.55;
  max-width: 54ch;
  margin: 0 0 var(--sp-6);
  opacity: 0.88;
}

/* ───── FOOTER ───── */
.site-footer {
  border-top: 1px solid color-mix(in oklab, var(--cream-0) 18%, transparent);
  padding: var(--sp-7) 0 var(--sp-6);
  font-family: var(--ff-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: color-mix(in oklab, var(--cream-0) 68%, transparent);
}
.site-footer__row {
  display: flex;
  justify-content: space-between;
  gap: var(--sp-5);
  flex-wrap: wrap;
}

/* ───── REVEAL ───── */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition:
    opacity var(--d-slow) var(--ease-out),
    transform var(--d-slow) var(--ease-out);
}
.reveal.in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: 80ms; }
.reveal[data-delay="2"] { transition-delay: 160ms; }
.reveal[data-delay="3"] { transition-delay: 240ms; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
}

/* ───── DIVIDERS ───── */
.rule {
  height: 1px;
  background: color-mix(in oklab, var(--ink-0) 14%, transparent);
  margin: 0;
  border: 0;
}
.rule--ink { background: color-mix(in oklab, var(--cream-0) 18%, transparent); }