/* ==========================================================================
   opening-hand.css — the Opening Hand section and Investigation Mode
   Oscar Kilgore — portfolio
   --------------------------------------------------------------------------
   Loaded after components.css. Uses only the existing design tokens; this
   file introduces no colours, no type sizes and no spacing values of its own.

   Layout note: the fan geometry is expressed entirely in CSS. JavaScript
   writes two unitless numbers per card — --card-i (position 0..6) and
   --card-lift (distance from the middle) — and every unit, angle and
   breakpoint value lives here. So the hand can be re-tuned, or the hand size
   changed, without touching the logic.
   ========================================================================== */

.oh { position: relative; }

.oh__intro {
  max-width: var(--measure);
  margin-bottom: var(--sp-6);
}

.oh__lead { font-size: var(--fs-lead); line-height: var(--lh-normal); color: var(--ink); }
.oh__sub  { margin-top: var(--sp-3); color: var(--ink-3); }

/* --------------------------------------------------------------------------
   Controls
   -------------------------------------------------------------------------- */

.oh__controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-4) var(--sp-6);
  padding-block: var(--sp-4);
  border-top: var(--hairline) solid var(--rule);
  border-bottom: var(--hairline) solid var(--rule);
  margin-bottom: var(--sp-6);
}

.oh__mulligan {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-5);
  background-color: var(--ink);
  color: var(--paper);
  border: 0;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: var(--tracking-mono);
  text-transform: uppercase;
  transition: background-color var(--dur-fast) var(--ease-out);
}

.oh__mulligan:hover { background-color: var(--accent); }
.oh__mulligan:active { transform: scale(0.985); }
.oh__mulligan[disabled] { opacity: 0.5; cursor: default; }

.oh__reload {
  display: inline-block;
  transition: transform var(--dur-slow) var(--ease-spring);
}

.oh__mulligan:hover .oh__reload { transform: rotate(180deg); }

.oh__counts {
  display: flex;
  gap: var(--sp-5);
  margin-left: auto;
}

/* Mulligan annotations. One at a time, never both. */
.oh__aside {
  flex-basis: 100%;
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.02em;
  text-transform: none;
}

.oh__aside[hidden] { display: none; }

/* --------------------------------------------------------------------------
   The hand — mobile first: a snap strip, not a shrunken fan
   -------------------------------------------------------------------------- */

.oh-hand {
  --hand-card-w: 150px;
  --hand-card-h: 212px;
  --hand-n: 7;

  display: flex;
  gap: var(--sp-3);
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  /* Break the page rail so cards scroll off the physical edge. */
  margin-inline: calc(-1 * var(--page-x));
  padding-inline: var(--page-x);
  padding-block: var(--sp-2) var(--sp-5);
  scroll-padding-inline-start: var(--page-x);
  list-style: none;
}

.oh-hand__slot {
  flex: 0 0 auto;
  scroll-snap-align: start;
}

/* --------------------------------------------------------------------------
   Card
   -------------------------------------------------------------------------- */

.oh-card {
  position: relative;
  display: block;
  inline-size: var(--hand-card-w);
  block-size: var(--hand-card-h);
  padding: 0;
  background: none;
  border: 0;
  cursor: pointer;
  perspective: 900px;
  text-align: left;

  /* Deal state. The hand sets these to their resting values once dealt. */
  --deal-y: 22px;
  --deal-s: 0.96;
  opacity: 0;

  transform: translateY(var(--deal-y)) scale(var(--deal-s));
  transition:
    opacity var(--dur-med) var(--ease-out),
    transform var(--dur-med) var(--ease-out);
  transition-delay: calc(var(--card-i, 0) * 60ms);
}

.oh-hand.is-dealt .oh-card {
  --deal-y: 0px;
  --deal-s: 1;
  opacity: 1;
}

/* Clearing runs faster than dealing — asymmetric on purpose. */
.oh-hand.is-clearing .oh-card {
  --deal-y: 16px;
  opacity: 0;
  transition-duration: var(--dur-fast);
  transition-delay: calc(var(--card-i, 0) * 40ms);
}

.oh-card__inner {
  position: relative;
  display: block;
  inline-size: 100%;
  block-size: 100%;
  transform-style: preserve-3d;
  transition: transform var(--dur-med) var(--ease-in-out);
}

.oh-card[aria-expanded="true"] .oh-card__inner { transform: rotateY(180deg); }

.oh-card__face {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  padding: var(--sp-4);
  background-color: var(--card-bg);
  border: var(--hairline) solid var(--rule);
  backface-visibility: hidden;
  transition: border-color var(--dur-fast) var(--ease-out);
}

.oh-card__face--back { transform: rotateY(180deg); }

.oh-card:hover .oh-card__face,
.oh-card:focus-visible .oh-card__face { border-color: var(--rule-strong); }

.oh-card__meta {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: var(--tracking-mono);
  text-transform: uppercase;
  color: var(--ink-3);
}

/* Titles are sized by CONTENT, not by viewport alone. Cards carry an
   optional `titleSize` in cards.js which maps to the modifiers below, so
   the four long single words never need runtime measurement.

   overflow-wrap matters more than the clamp here: COMMUNICATION and
   WOOCOMMERCE are single words, and no font-size alone will wrap them. */
.oh-card__title {
  margin-top: auto;
  font-size: var(--card-title, clamp(1rem, 0.92rem + 0.36vw, 1.125rem));
  line-height: 0.98;
  letter-spacing: -0.015em;
  font-variation-settings: "wght" 560, "wdth" 94;
  text-transform: uppercase;
  color: var(--ink);
  overflow-wrap: anywhere;
  hyphens: auto;
  text-wrap: balance;
  transition: transform var(--dur-fast) var(--ease-out);
}

.oh-card__title--long  { --card-title: clamp(0.875rem, 0.8rem + 0.3vw, 1rem); }
.oh-card__title--xlong { --card-title: clamp(0.78rem, 0.72rem + 0.24vw, 0.875rem); }

.oh-card__rule {
  inline-size: 40%;
  block-size: var(--hairline);
  margin-block: var(--sp-3);
  background-color: var(--rule-strong);
}

.oh-card__foot {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--sp-2);
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: var(--tracking-mono);
  text-transform: uppercase;
  color: var(--ink-3);
}

.oh-card__action { color: var(--ink-3); transition: color var(--dur-fast) var(--ease-out); }
.oh-card:hover .oh-card__action { color: var(--accent); }

/* Back face */
.oh-card__desc {
  margin-top: var(--sp-3);
  font-size: 0.72rem;
  line-height: 1.45;
  color: var(--ink-2);
  text-transform: none;
  letter-spacing: 0;
}

.oh-card__note {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: var(--tracking-mono);
  text-transform: uppercase;
  color: var(--ink-3);
}

/* --- Category signals ---------------------------------------------------
   Four categories, four different mechanisms — not four colours. */

.oh-card--webops .oh-card__rule { background-color: var(--accent); }
.oh-card--experience .oh-card__meta { color: var(--ink); }
.oh-card--personal .oh-card__face { background-color: var(--card-bg-personal); }

/* --------------------------------------------------------------------------
   THE BUG
   --------------------------------------------------------------------------
   Not styled to look special — styled to look slightly *wrong*. A divider
   that does not line up, a number that was never assigned, and one gap in
   the border. No glow, no shimmer.
   -------------------------------------------------------------------------- */

.oh-card--bug .oh-card__rule {
  margin-left: 6px;      /* misaligned with the rest of the card */
  inline-size: 34%;
  background-color: var(--ink-3);
}

.oh-card--bug .oh-card__face--front::after {
  /* One interruption in the right-hand border. */
  content: "";
  position: absolute;
  top: 38%;
  right: -1px;
  inline-size: var(--hairline);
  block-size: 16px;
  background-color: var(--card-bg);
}

.oh-card--bug .oh-card__action { color: var(--accent); }

/* The single, one-time anomaly after the deal settles. */
.oh-card--bug.is-glitching .oh-card__title { transform: translateX(3px); }

.oh-card--bug.is-resolved .oh-card__rule {
  margin-left: 0;
  inline-size: 40%;
  background-color: var(--accent);
}

.oh-card--bug.is-resolved .oh-card__face--front::after { display: none; }

/* --------------------------------------------------------------------------
   Investigation Mode
   -------------------------------------------------------------------------- */

.oh__hand-view[hidden],
.oh__incident[hidden] { display: none; }

.oh__incident { padding-top: var(--sp-2); }

.incident__id {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2) var(--sp-5);
  padding-bottom: var(--sp-3);
  border-bottom: var(--hairline) solid var(--ink);
  margin-bottom: var(--sp-5);
}

.incident__title {
  font-size: var(--fs-2);
  line-height: 1.05;
  font-variation-settings: "wght" 560, "wdth" 94;
  margin-bottom: var(--sp-5);
}

.incident__title:focus-visible { outline-offset: 6px; }

.incident__block { margin-bottom: var(--sp-5); }

.incident__label {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: var(--tracking-mono);
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: var(--sp-2);
}

.incident__text { color: var(--ink-2); max-width: var(--measure); }
.incident__quote { color: var(--ink); font-style: normal; }

.incident__status--open     { color: var(--ink-3); }
.incident__status--active   { color: var(--ink); }
.incident__status--resolved { color: var(--accent); }

/* --- Investigation paths ------------------------------------------------- */

.incident__paths {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  margin-bottom: var(--sp-5);
}

.incident__path {
  flex: 1 1 12rem;
  padding: var(--sp-3) var(--sp-4);
  background: none;
  border: var(--hairline) solid var(--rule-strong);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: var(--tracking-mono);
  text-transform: uppercase;
  text-align: left;
  color: var(--ink);
  transition:
    border-color var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out);
}

.incident__path:hover { border-color: var(--ink); }

/* Inspected paths stay marked — the state is the record of what you did. */
.incident__path[aria-pressed="true"] {
  border-color: var(--rule);
  color: var(--ink-3);
}

.incident__path[aria-pressed="true"]::after {
  content: " ✓";
  color: var(--accent);
}

/* --- Evidence ------------------------------------------------------------ */

.evidence[hidden] { display: none; }

.evidence {
  padding-block: var(--sp-4);
  border-top: var(--hairline) solid var(--rule);
}

.evidence__head {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: var(--tracking-mono);
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: var(--sp-3);
}

.evidence__row {
  display: grid;
  gap: var(--sp-1) var(--sp-5);
  padding-block: var(--sp-2);
}

.evidence__row dt {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: var(--tracking-mono);
  text-transform: uppercase;
  color: var(--ink-3);
}

.evidence__row dd { margin: 0; color: var(--ink-2); }

/* --- Hypothesis ---------------------------------------------------------- */

.incident__hypothesis[hidden] { display: none; }

.incident__hypothesis {
  padding-top: var(--sp-5);
  margin-top: var(--sp-5);
  border-top: var(--hairline) solid var(--ink);
}

.hypothesis__list { display: grid; gap: var(--sp-3); margin-top: var(--sp-4); }

.hypothesis__option {
  display: grid;
  grid-template-columns: 1.75rem 1fr;
  gap: var(--sp-3);
  align-items: baseline;
  padding: var(--sp-3) var(--sp-4);
  background: none;
  border: var(--hairline) solid var(--rule);
  cursor: pointer;
  text-align: left;
  color: var(--ink-2);
  transition:
    border-color var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out);
}

.hypothesis__option:hover { border-color: var(--rule-strong); color: var(--ink); }

.hypothesis__key {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: var(--tracking-mono);
  color: var(--ink-3);
}

.hypothesis__option.is-wrong { border-color: var(--rule); color: var(--ink-3); }
.hypothesis__option.is-wrong .hypothesis__key::after { content: " ×"; }

.hypothesis__option.is-right {
  border-color: var(--accent);
  color: var(--ink);
}

.hypothesis__feedback[hidden] { display: none; }

.hypothesis__feedback {
  margin-top: var(--sp-4);
  padding-left: var(--sp-4);
  border-left: 2px solid var(--rule-strong);
  color: var(--ink-2);
}

.hypothesis__feedback.is-resolved { border-left-color: var(--accent); }

/* --- Resolution ---------------------------------------------------------- */

.incident__resolution[hidden] { display: none; }

.incident__resolution {
  padding-top: var(--sp-5);
  margin-top: var(--sp-5);
  border-top: var(--hairline) solid var(--ink);
}

.incident__nice {
  font-size: var(--fs-2);
  font-variation-settings: "wght" 560, "wdth" 94;
  margin-bottom: var(--sp-2);
}

.incident__annotation {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.02em;
  color: var(--ink-3);
  margin-bottom: var(--sp-5);
}

.incident__return {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-5);
  background-color: var(--ink);
  color: var(--paper);
  border: 0;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: var(--tracking-mono);
  text-transform: uppercase;
  transition: background-color var(--dur-fast) var(--ease-out);
}

.incident__return:hover { background-color: var(--accent); }

/* --------------------------------------------------------------------------
   Desktop — the fan
   -------------------------------------------------------------------------- */

@media (min-width: 64em) {
  .oh-hand {
    --hand-card-w: 156px;
    --hand-card-h: 220px;
    --hand-step: 124px;
    --hand-rot: 2deg;
    --hand-lift: 4px;
    --hand-mid: 3;

    display: block;
    position: relative;
    overflow: visible;
    margin-inline: auto;
    padding-inline: 0;
    inline-size: calc(var(--hand-card-w) + (var(--hand-n) - 1) * var(--hand-step));
    block-size: calc(var(--hand-card-h) + 3 * var(--hand-lift) + 28px);
  }

  .oh-hand__slot {
    position: absolute;
    inset-block-start: 0;
    inset-inline-start: 0;
  }

  /* One transform, composed from independent custom properties, so each
     interaction state only has to change its own variable. */
  .oh-card {
    position: relative;
    transform-origin: 50% 92%;
    transform:
      translateX(calc(var(--card-i) * var(--hand-step) + var(--nudge, 0px)))
      translateY(calc(
        var(--card-lift) * var(--hand-lift) + var(--deal-y) + var(--hover-y, 0px)
      ))
      rotate(calc((var(--card-i) - var(--hand-mid)) * var(--hand-rot) * var(--rot-mult, 1)))
      scale(var(--deal-s));
  }

  .oh-card:hover,
  .oh-card:focus-visible,
  .oh-card[aria-expanded="true"] {
    --hover-y: -18px;
    --rot-mult: 0;
    z-index: 5;
  }

  /* Neighbours of the active card step aside. */
  .oh-hand__slot:hover + .oh-hand__slot .oh-card { --nudge: 10px; }
  .oh-hand__slot:has(+ .oh-hand__slot:hover) .oh-card { --nudge: -10px; }

  /* The rest of the hand recedes while one card is active.
     Done with COLOUR, never with opacity: the cards sit on a patterned
     background, and an alpha dim would let the pattern show straight
     through them. Card surfaces stay fully opaque at all times. */
  .oh-hand:has(.oh-card:hover) .oh-card:not(:hover) .oh-card__face { border-color: var(--rule); }
  .oh-hand:has(.oh-card:hover) .oh-card:not(:hover) .oh-card__title { color: var(--ink-3); }
  .oh-hand:has(.oh-card:hover) .oh-card:not(:hover) .oh-card__meta,
  .oh-hand:has(.oh-card:hover) .oh-card:not(:hover) .oh-card__foot { color: var(--rule-strong); }

  /* Investigation Mode gets the sticky-aside composition used elsewhere. */
  .oh__incident {
    display: grid;
    grid-template-columns: repeat(var(--grid-cols), minmax(0, 1fr));
    column-gap: var(--gutter);
  }

  .incident__aside {
    grid-column: 1 / span 4;
    position: sticky;
    top: 7rem;
    align-self: start;
  }

  .incident__main { grid-column: 6 / -1; }

  .incident__id { display: block; }
  .incident__id > * + * { margin-top: var(--sp-2); }

  .evidence__row { grid-template-columns: 8rem 1fr; }
}

@media (min-width: 75em) {
  .oh-hand {
    --hand-card-w: 168px;
    --hand-card-h: 236px;
    --hand-step: 140px;
  }
}

/* --------------------------------------------------------------------------
   Reduced motion — the fan is decorative, so it is replaced entirely by a
   flat grid rather than merely being un-animated. THE BUG's static
   irregularities survive, so it stays discoverable.
   -------------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  .oh-hand {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--sp-4);
    inline-size: auto;
    block-size: auto;
    overflow: visible;
    margin-inline: 0;
    padding-inline: 0;
  }

  .oh-hand__slot { position: static; }

  .oh-card {
    inline-size: 100%;
    opacity: 1;
    transform: none !important;
  }

  .oh-card__inner { transition: none; }
  .oh-card[aria-expanded="true"] .oh-card__inner { transform: rotateY(180deg); }
}