/* ============================================================
   Isthafa — Talent Vetting PaaS · Investor Deck
   Style direction: dark editorial luxury, Maldivian lagoon palette.
   Fonts: Fraunces (display) + Manrope (UI / numerals).
   ============================================================ */

:root {
  color-scheme: dark;

  /* palette */
  --bg: oklch(12% 0.022 252);
  --bg-2: oklch(16% 0.028 246);
  --surface: oklch(100% 0 0 / 0.045);
  --surface-strong: oklch(100% 0 0 / 0.085);
  --line: oklch(100% 0 0 / 0.11);
  --line-strong: oklch(100% 0 0 / 0.22);
  --text: oklch(96% 0.008 220);
  --text-muted: oklch(74% 0.018 225);
  --text-dim: oklch(56% 0.02 228);
  --lagoon: oklch(82% 0.115 192);
  --lagoon-deep: oklch(64% 0.11 198);
  --lagoon-dim: oklch(48% 0.08 205);
  --lagoon-ink: oklch(30% 0.05 215);
  --coral: oklch(74% 0.15 36);
  --sand: oklch(89% 0.07 86);
  --sand-deep: oklch(74% 0.09 80);

  /* type */
  --font-display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --font-body: "Manrope", system-ui, -apple-system, "Segoe UI", sans-serif;
  --text-xs: clamp(0.68rem, 0.64rem + 0.2vw, 0.76rem);
  --text-sm: clamp(0.8rem, 0.76rem + 0.2vw, 0.9rem);
  --text-base: clamp(0.95rem, 0.88rem + 0.3vw, 1.1rem);
  --text-lg: clamp(1.08rem, 0.95rem + 0.6vw, 1.4rem);
  --text-h3: clamp(1.15rem, 1rem + 0.7vw, 1.55rem);
  --text-h2: clamp(1.45rem, 1.1rem + 1.6vw, 2.3rem);
  --text-h1: clamp(2rem, 1.2rem + 3.4vw, 4.1rem);
  --text-hero: clamp(2.6rem, 1.3rem + 6vw, 6.4rem);
  --text-stat: clamp(2rem, 1.2rem + 3.2vw, 4.2rem);

  /* rhythm */
  --gutter: clamp(1rem, 4vw, 4rem);
  --stack: clamp(1rem, 1.5vw, 1.6rem);
  --radius-sm: 8px;
  --radius: 18px;
  --radius-lg: 28px;

  /* motion */
  --dur-fast: 160ms;
  --dur: 420ms;
  --dur-slow: 760ms;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);

  --hud-h: 3.5rem;
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow: hidden;
}
.no-js body { overflow: auto; }
h1, h2, h3, h4, p, ul, ol, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
a { color: var(--lagoon); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
svg { display: block; }
em { font-style: italic; }
strong { font-weight: 700; color: var(--text); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.num { font-variant-numeric: tabular-nums; }

/* ---------- atmosphere ---------- */
.glow {
  position: fixed;
  z-index: 0;
  width: 90vmax;
  height: 90vmax;
  left: 0;
  top: 0;
  translate: calc(var(--gx, 70) * 1vw - 45vmax) calc(var(--gy, 30) * 1vh - 45vmax);
  transition: translate 1.4s var(--ease-in-out);
  pointer-events: none;
  filter: blur(60px);
}
.glow > i {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  opacity: 0;
  transition: opacity 1.2s var(--ease-in-out);
}
.glow .g-lagoon { background: radial-gradient(closest-side, oklch(64% 0.11 198 / 0.34), transparent 72%); }
.glow .g-coral  { background: radial-gradient(closest-side, oklch(62% 0.15 36 / 0.28), transparent 72%); }
.glow .g-sand   { background: radial-gradient(closest-side, oklch(74% 0.09 80 / 0.26), transparent 72%); }
body[data-glow="lagoon"] .g-lagoon,
body[data-glow="coral"] .g-coral,
body[data-glow="sand"] .g-sand { opacity: 1; }

.grain {
  position: fixed;
  inset: 0;
  z-index: 60;
  pointer-events: none;
  opacity: 0.075;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.7 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 200px 200px;
}

/* ---------- HUD ---------- */
.progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 2px;
  z-index: 70;
  background: var(--line);
}
.progress > i {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--lagoon-deep), var(--lagoon));
  transform-origin: left center;
  transform: scaleX(var(--p, 0));
  transition: transform var(--dur-slow) var(--ease-out);
}

.hud {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--hud-h);
  z-index: 55;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
  padding-inline: var(--gutter);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
  pointer-events: none;
}
.hud > * { pointer-events: auto; }
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--text);
  text-transform: none;
  letter-spacing: 0;
}
.brand-mark {
  width: 1.6rem; height: 1.6rem;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--lagoon), var(--lagoon-deep));
  display: grid; place-items: center;
  color: var(--bg);
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 600;
  font-size: 1.05rem;
  line-height: 1;
}
.brand-name {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.2rem;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.brand small {
  font-family: var(--font-body);
  font-style: normal;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.6rem;
  color: var(--text-dim);
  border-left: 1px solid var(--line-strong);
  padding-left: 0.7rem;
  margin-left: 0.1rem;
}
.hud-title { text-align: center; color: var(--text-muted); white-space: nowrap; }
.hud-right { display: flex; justify-content: flex-end; align-items: center; gap: 1rem; }
.hud-counter { font-variant-numeric: tabular-nums; }
.hud-autoplay { display: none; color: var(--sand); }
body.is-autoplay .hud-autoplay { display: inline; }
@media (max-width: 760px) {
  .hud { grid-template-columns: 1fr auto; }
  .hud-title { display: none; }
  .brand small { display: none; }
}

/* ---------- Controls ---------- */
.controls {
  position: fixed;
  left: 0; right: 0;
  bottom: max(0.9rem, env(safe-area-inset-bottom));
  z-index: 55;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding-inline: var(--gutter);
  pointer-events: none;
}
.controls > * { pointer-events: auto; }
.hint {
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.hint kbd {
  font: inherit;
  padding: 0.15rem 0.45rem;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  color: var(--text-muted);
}
.btn-group { display: flex; align-items: center; gap: 0.5rem; }
.btn-icon {
  width: 2.6rem; height: 2.6rem;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: oklch(14% 0.02 250 / 0.6);
  backdrop-filter: blur(10px);
  color: var(--text-muted);
  display: grid; place-items: center;
  transition: transform var(--dur-fast) var(--ease-out), color var(--dur-fast), border-color var(--dur-fast), background var(--dur-fast);
}
.btn-icon svg { width: 1.1rem; height: 1.1rem; fill: none; stroke: currentColor; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; }
.btn-icon:hover { color: var(--text); border-color: var(--lagoon); transform: translateY(-1px); }
.btn-icon:active { transform: scale(0.95); }
.btn-icon:focus-visible { outline: 2px solid var(--lagoon); outline-offset: 2px; }
.btn-icon[aria-pressed="true"] { color: var(--bg); background: var(--lagoon); border-color: var(--lagoon); }
.btn-icon.primary { color: var(--text); border-color: var(--line-strong); }
.btn-icon.primary:hover { background: var(--lagoon); color: var(--bg); }
.btn-icon:disabled { opacity: 0.3; pointer-events: none; }
.divider { width: 1px; height: 1.4rem; background: var(--line-strong); margin-inline: 0.3rem; }
@media (max-width: 760px) {
  .hint { display: none; }
  .controls { justify-content: flex-end; }
  .btn-icon.secondary { display: none; }
}

/* ---------- Deck ---------- */
.deck {
  position: relative;
  z-index: 1;
  height: 100dvh;
  touch-action: pan-y;
}
.slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transform: translate3d(3%, 0, 0);
  transition:
    opacity var(--dur) var(--ease-out),
    transform var(--dur-slow) var(--ease-out),
    visibility 0s linear var(--dur);
}
.deck[data-dir="back"] .slide { transform: translate3d(-3%, 0, 0); }
.slide.is-active {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition-delay: 0s, 0s, 0s;
}
.slide.is-leaving { transform: translate3d(-3%, 0, 0); }
.deck[data-dir="back"] .slide.is-leaving { transform: translate3d(3%, 0, 0); }

.slide-inner {
  height: 100%;
  width: min(1240px, 100%);
  margin-inline: auto;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
  display: flex;
  flex-direction: column;
  padding: calc(var(--hud-h) + 0.75rem) var(--gutter) 5.25rem;
}
.slide-content { margin-block: auto; width: 100%; }

.no-js .deck { height: auto; }
.no-js .slide { position: relative; opacity: 1; visibility: visible; transform: none; min-height: 100dvh; }
.no-js .controls, .no-js .progress, .no-js .hud-counter { display: none; }

/* ---------- Reveal choreography ---------- */
[data-reveal] {
  opacity: 0;
  transform: translate3d(0, 18px, 0);
  transition: none;
}
.is-active [data-reveal].in {
  opacity: 1;
  transform: none;
  transition:
    opacity 0.65s var(--ease-out) calc(var(--i, 0) * 75ms + 120ms),
    transform 0.8s var(--ease-out) calc(var(--i, 0) * 75ms + 120ms);
}
.no-js [data-reveal] { opacity: 1; transform: none; }

/* ---------- Typography blocks ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--lagoon);
}
.eyebrow::before { content: ""; width: 2rem; height: 1px; background: currentColor; opacity: 0.7; }
.eyebrow.coral { color: var(--coral); }
.eyebrow.sand { color: var(--sand); }

.h1 {
  font-family: var(--font-display);
  font-weight: 460;
  font-size: var(--text-h1);
  line-height: 1.02;
  letter-spacing: -0.024em;
  margin: 0.7rem 0 1rem;
  max-width: 19ch;
  text-wrap: balance;
  font-variation-settings: "opsz" 144, "SOFT" 20;
}
.h1 em, .hero-title em, .h2 em {
  color: var(--sand);
  font-variation-settings: "opsz" 144, "SOFT" 60, "WONK" 1;
}
.h2 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--text-h2);
  line-height: 1.1;
  letter-spacing: -0.02em;
}
.h3 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--text-h3);
  line-height: 1.15;
  letter-spacing: -0.015em;
}
.lede {
  font-size: var(--text-lg);
  line-height: 1.45;
  color: var(--text-muted);
  max-width: 60ch;
  font-weight: 450;
  text-wrap: pretty;
}
.muted { color: var(--text-muted); }
.dim { color: var(--text-dim); }
.small { font-size: var(--text-sm); }
.xs { font-size: var(--text-xs); }
.sand-text { color: var(--sand); }
.lagoon-text { color: var(--lagoon); }
.coral-text { color: var(--coral); }

.header { margin-bottom: clamp(1.25rem, 3vh, 2.5rem); }
.header.split {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: var(--gutter);
  align-items: end;
}
.header.split .lede { margin-bottom: 0.4rem; }
@media (max-width: 900px) { .header.split { grid-template-columns: 1fr; gap: 0.75rem; } }

.footnote {
  margin-top: clamp(1rem, 2.5vh, 1.75rem);
  font-size: var(--text-xs);
  color: var(--text-dim);
  line-height: 1.5;
  max-width: 100ch;
}
.footnote a { color: var(--text-muted); }

/* ---------- Layout utilities ---------- */
.grid { display: grid; gap: var(--stack); }
.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.cols-2-1 { grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); }
.cols-1-2 { grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); }
.align-center { align-items: center; }
.align-start { align-items: start; }
@media (max-width: 900px) {
  .cols-3, .cols-4, .cols-2-1, .cols-1-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .cols-2, .cols-3, .cols-4, .cols-2-1, .cols-1-2 { grid-template-columns: 1fr; }
}
.stack > * + * { margin-top: var(--stack); }
.tight > * + * { margin-top: 0.5rem; }

/* ---------- Components ---------- */
.card {
  position: relative;
  padding: clamp(1.1rem, 2vw, 1.6rem) clamp(1.1rem, 2vw, 1.7rem);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--surface);
  overflow: hidden;
}
.card.featured {
  border-color: color-mix(in oklab, var(--lagoon) 45%, transparent);
  background: linear-gradient(165deg, color-mix(in oklab, var(--lagoon) 13%, transparent), var(--surface) 60%);
}
.card.featured::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--lagoon), transparent);
}
.card.sand-card {
  border-color: color-mix(in oklab, var(--sand) 35%, transparent);
  background: linear-gradient(165deg, color-mix(in oklab, var(--sand) 10%, transparent), var(--surface) 60%);
}
.card.coral-card {
  border-color: color-mix(in oklab, var(--coral) 35%, transparent);
  background: linear-gradient(165deg, color-mix(in oklab, var(--coral) 9%, transparent), var(--surface) 60%);
}
.card.scroll-x { overflow-x: auto; scrollbar-width: thin; }
.card .h3 { margin-bottom: 0.5rem; }
.card p { color: var(--text-muted); font-size: var(--text-sm); line-height: 1.55; }
.card-kicker {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 0.6rem;
}
.card-icon {
  width: 2.4rem; height: 2.4rem;
  border-radius: 10px;
  display: grid; place-items: center;
  background: var(--surface-strong);
  border: 1px solid var(--line);
  color: var(--lagoon);
  margin-bottom: 0.9rem;
}
.card-icon svg { width: 1.2rem; height: 1.2rem; fill: none; stroke: currentColor; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; }
.coral-card .card-icon { color: var(--coral); }
.sand-card .card-icon { color: var(--sand); }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.28rem 0.7rem;
  border-radius: 999px;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  border: 1px solid var(--line-strong);
  color: var(--text-muted);
  white-space: nowrap;
}
.chip.lagoon { color: var(--lagoon); border-color: color-mix(in oklab, var(--lagoon) 50%, transparent); background: color-mix(in oklab, var(--lagoon) 10%, transparent); }
.chip.sand { color: var(--sand); border-color: color-mix(in oklab, var(--sand) 45%, transparent); background: color-mix(in oklab, var(--sand) 9%, transparent); }
.chip.coral { color: var(--coral); border-color: color-mix(in oklab, var(--coral) 45%, transparent); background: color-mix(in oklab, var(--coral) 9%, transparent); }

.bullets li {
  position: relative;
  padding-left: 1.4rem;
  color: var(--text-muted);
  font-size: var(--text-sm);
  line-height: 1.5;
}
.bullets li + li { margin-top: 0.45rem; }
.bullets li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.62em;
  width: 0.55rem; height: 0.55rem;
  border-radius: 2px;
  transform: rotate(45deg);
  background: var(--lagoon);
  opacity: 0.85;
}
.bullets.sand li::before { background: var(--sand); }
.bullets.coral li::before { background: var(--coral); }

/* stat tiles */
.stat {
  position: relative;
  padding: clamp(1rem, 1.8vw, 1.5rem) clamp(1rem, 1.8vw, 1.5rem);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--surface-strong), var(--surface));
  overflow: hidden;
}
.stat::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--lagoon), transparent 80%);
}
.stat.coral::after { background: linear-gradient(90deg, var(--coral), transparent 80%); }
.stat.sand::after { background: linear-gradient(90deg, var(--sand), transparent 80%); }
.stat-value {
  font-family: var(--font-display);
  font-size: var(--text-stat);
  font-weight: 460;
  line-height: 1;
  letter-spacing: -0.03em;
  font-variation-settings: "opsz" 144;
  color: var(--text);
  white-space: normal;
}
.stat.compact .stat-value { font-size: var(--text-h2); }
.stat-value small { font-size: 0.42em; color: var(--text-muted); letter-spacing: 0; font-weight: 400; margin-left: 0.15em; }
.stat.coral .stat-value { color: var(--coral); }
.stat.sand .stat-value { color: var(--sand); }
.stat.lagoon .stat-value { color: var(--lagoon); }
.stat-label { margin-top: 0.55rem; color: var(--text-muted); font-size: var(--text-sm); line-height: 1.4; }
.stat-sub { margin-top: 0.3rem; font-size: var(--text-xs); color: var(--text-dim); }
.stat.hero { grid-row: span 2; display: flex; flex-direction: column; justify-content: flex-end; }
.stat.hero .stat-value { font-size: var(--text-hero); }
@media (max-width: 640px) { .stat.hero { grid-row: auto; } }

/* ---------- Compact heights (laptops with browser chrome, small panes) ---------- */
@media (max-height: 820px) {
  :root {
    --text-h1: clamp(1.7rem, 1rem + 2.6vw, 3rem);
    --text-hero: clamp(2.2rem, 1.2rem + 4.5vw, 4.6rem);
    --text-stat: clamp(1.6rem, 1rem + 2.4vw, 3rem);
    --text-lg: clamp(0.95rem, 0.88rem + 0.4vw, 1.15rem);
    --text-h3: clamp(1.05rem, 0.95rem + 0.5vw, 1.3rem);
    --stack: 0.75rem;
  }
  .header { margin-bottom: 0.9rem; }
  .h1 { margin: 0.4rem 0 0.6rem; }
  .card, .stat { padding: 0.85rem 1rem; }
  .card p, .bullets li, .stat-label { font-size: var(--text-xs); }
  .stat-sub { display: none; }
  .stat.hero .stat-value { font-size: var(--text-h1); }
  .card-icon { width: 2rem; height: 2rem; margin-bottom: 0.6rem; }
  .slide-inner { padding-top: calc(var(--hud-h) + 0.25rem); padding-bottom: 4.4rem; }
}