/* ------------------------------------------------------------------
   Defne Gökner — portfolio in progress
   Three colours: paper (white), ink (black), ruby (accent).
------------------------------------------------------------------ */

:root {
  --paper: #FBFBF9;
  --ink: #111111;
  --ruby: #B31229;

  --ink-70: rgba(17, 17, 17, .70);
  --ink-50: rgba(17, 17, 17, .50);
  --ink-38: rgba(17, 17, 17, .38);
  --ink-14: rgba(17, 17, 17, .14);
  --ruby-35: rgba(179, 18, 41, .35);

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, "Helvetica Neue", Helvetica, Arial, sans-serif;
  --ease: cubic-bezier(.22, .7, .2, 1);
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, p, ul { margin: 0; }
ul { padding: 0; list-style: none; }

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; border: 0;
}

:focus-visible { outline: 1px solid var(--ruby); outline-offset: 3px; }

/* ---------------------------------------------------------------- layout */

.page {
  min-height: 100svh;
  height: 100dvh;
  padding: clamp(20px, 2.6vw, 44px);
  max-width: 1680px;
  margin-inline: auto;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  row-gap: clamp(20px, 3vh, 38px);
}

.top {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  grid-template-areas: "title meters links";
  align-items: start;
  column-gap: clamp(32px, 4.5vw, 72px);
  row-gap: clamp(14px, 2.4vh, 26px);
}

.top__title { grid-area: title; container-type: inline-size; }
.links      { grid-area: links; justify-self: end; }
.nutrition  { grid-area: meters; justify-self: end; padding-top: 1px; }

.stage {
  display: grid;
  grid-template-rows: minmax(0, 1fr);
  gap: 16px;
  min-height: 0;
}

/* ---------------------------------------------------------------- title */

/* Always one line: sized against the title column, never wrapping,
   and locked to the longest headline so it never resizes mid-story. */
.headline {
  font-weight: 600;
  letter-spacing: -.035em;
  line-height: 1.05;
  white-space: nowrap;
  font-size: clamp(1.4rem, 4.6vw, 3.4rem);
  font-size: min(3.4rem, 7.7cqw);
}

/* min-height keeps the frame below from jumping when the line empties out. */
.subline {
  margin-top: .8rem;
  min-height: 1.45em;
  font-size: .9375rem;
  color: var(--ink-70);
  max-width: 34ch;
}

.swap { transition: opacity .3s var(--ease), transform .3s var(--ease); }
.swap.is-out { opacity: 0; transform: translateY(-5px); }

/* ---------------------------------------------------------------- links */

.links { display: flex; align-items: baseline; gap: clamp(1rem, 2vw, 1.75rem); }

.links a {
  display: inline-flex;
  align-items: baseline;
  gap: .45rem;
  padding-bottom: .2rem;
  font-size: .875rem;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--ink-14);
  transition: color .25s var(--ease), border-color .25s var(--ease);
}

.links a:hover { color: var(--ruby); border-bottom-color: var(--ruby); }
.links .arrow { font-size: .6875rem; color: var(--ink-38); transition: transform .25s var(--ease), color .25s var(--ease); }
.links a:hover .arrow { color: var(--ruby); transform: translate(2px, -2px); }

/* ------------------------------------------------------------ nutrition */

.meters {
  width: min(260px, 26vw);
  display: grid;
  gap: .5rem;
}

.meter {
  display: grid;
  grid-template-columns: 4.5rem minmax(0, 1fr);
  align-items: center;
  gap: .8rem;
}

.meter__name {
  font-size: .6875rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-38);
}

.meter__track {
  position: relative;
  display: block;
  height: 2px;
  background: var(--ink-14);
}

.meter__fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: 0;
  background: var(--ruby);
  transition: width .55s var(--ease);
}

/* ------------------------------------------------------------ play area */

.play {
  position: relative;
  min-height: 0;
  overflow: hidden;
  border: 1px solid var(--ink-14);
  background: var(--paper);
  touch-action: none;
  cursor: crosshair;
  contain: layout paint;
  transition: border-color .55s var(--ease);
}

/* the frame is live from the second iteration on */
.play.is-hit { border-color: var(--ruby); transition-duration: 0s; }

.play:focus { outline: none; }
.play:focus-visible { outline: 1px solid var(--ruby); outline-offset: -1px; }

/* crop marks */
.play::before,
.play::after {
  content: "";
  position: absolute;
  width: 9px; height: 9px;
  border: 1px solid var(--ruby);
  pointer-events: none;
  z-index: 6;
}
.play::before { top: 11px; left: 11px; border-right: 0; border-bottom: 0; }
.play::after { right: 11px; bottom: 11px; border-left: 0; border-top: 0; }

.trail { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 1; pointer-events: none; }
.trail polyline { fill: none; stroke: var(--ruby-35); stroke-width: 1; stroke-linejoin: round; stroke-linecap: round; }

/* edge flash */
.edge { position: absolute; background: var(--ruby); opacity: 0; pointer-events: none; z-index: 5; transition: opacity .5s var(--ease); }
.edge--top, .edge--bottom { left: 0; right: 0; height: 1px; }
.edge--top { top: 0; } .edge--bottom { bottom: 0; }
.edge--left, .edge--right { top: 0; bottom: 0; width: 1px; }
.edge--left { left: 0; } .edge--right { right: 0; }
.edge.is-lit { opacity: 1; transition-duration: 0s; }

/* agent */
.agent { position: absolute; left: 0; top: 0; z-index: 4; pointer-events: none; }
.agent i {
  display: block;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--ruby);
  position: relative;
}
.agent i::after {
  content: "";
  position: absolute; inset: -1px;
  border: 1px solid var(--ruby);
  border-radius: 50%;
  opacity: .3;
  animation: ring 2.6s var(--ease) infinite;
}

/* field words */
.word { position: absolute; left: 0; top: 0; z-index: 2; pointer-events: none; will-change: transform; }
.word > span {
  display: block;
  font-size: 2.25rem;
  font-weight: 500;
  letter-spacing: -.005em;
  white-space: nowrap;
  color: var(--ink);
  transform-origin: 50% 50%;
  transition: color .3s var(--ease);
  animation: wordIn .6s var(--ease) both;
}
.word.is-near > span { color: var(--ruby); }
.word.is-eaten > span { animation: pop .28s var(--ease) forwards; }

/* trail words */
.seg { position: absolute; left: 0; top: 0; z-index: 3; pointer-events: none; will-change: transform; }
.seg > span {
  display: block;
  padding: 0 12px;
  background: var(--paper);
  font-size: 1.875rem;
  font-weight: 500;
  white-space: nowrap;
  color: var(--ink);
  animation: segIn .32s var(--ease) both;
}

/* collect message */
.msg { position: absolute; left: 0; top: 0; z-index: 5; pointer-events: none; }
.msg > span {
  display: block;
  font-size: .875rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ruby);
  white-space: nowrap;
  animation: msgFloat 1.5s var(--ease) forwards;
}

/* ------------------------------------------------------- keyboard prompt */

.prompt {
  position: absolute;
  left: 50%;
  top: 62%;
  transform: translateX(-50%);
  z-index: 5;
  display: grid;
  justify-items: center;
  gap: 14px;
  pointer-events: none;
  text-align: center;
  transition: opacity .45s var(--ease), transform .45s var(--ease);
}

.prompt.is-gone { opacity: 0; transform: translateX(-50%) translateY(6px); }

.keys {
  display: grid;
  grid-template-columns: repeat(3, 34px);
  grid-template-rows: repeat(2, 34px);
  gap: 6px;
}

.key {
  display: grid;
  place-items: center;
  font: inherit;
  font-size: .8125rem;
  color: var(--ink-50);
  border: 1px solid rgba(17, 17, 17, .18);
  border-radius: 3px;
  background: var(--paper);
}

.key--up    { grid-area: 1 / 2; animation: keyHint 3.4s var(--ease) infinite; }
.key--left  { grid-area: 2 / 1; animation: keyHint 3.4s var(--ease) .18s infinite; }
.key--down  { grid-area: 2 / 2; animation: keyHint 3.4s var(--ease) .36s infinite; }
.key--right { grid-area: 2 / 3; animation: keyHint 3.4s var(--ease) .54s infinite; }

.prompt__text {
  font-size: .6875rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-38);
}

/* -------------------------------------------------------------- failure */

.fail {
  position: absolute; inset: 0;
  z-index: 10;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: .5rem;
  padding: 2rem;
  text-align: center;
  background: rgba(251, 251, 249, .93);
  animation: fadeIn .3s var(--ease) both;
}
.fail[hidden] { display: none; }
.fail__title { font-size: 1.375rem; font-weight: 600; letter-spacing: -.025em; font-variant-numeric: tabular-nums; }
.fail__title span { color: var(--ink-38); }
.fail__sub { font-size: .9375rem; color: var(--ink-70); }


/* ------------------------------------------------------------- controls */

.controls { display: none; }

/* --------------------------------------------------------------- motion */

@keyframes ring { 0% { transform: scale(1); opacity: .28; } 70%, 100% { transform: scale(1.7); opacity: 0; } }
@keyframes wordIn { from { opacity: 0; transform: scale(.94); } to { opacity: 1; transform: scale(1); } }
@keyframes segIn { from { opacity: 0; transform: scale(.9); } to { opacity: 1; transform: scale(1); } }
@keyframes pop { 40% { transform: scale(1.16); opacity: .9; } 100% { transform: scale(1.02); opacity: 0; } }
@keyframes msgFloat { 0% { opacity: 0; transform: translateY(4px); } 18% { opacity: 1; transform: translateY(0); } 72% { opacity: 1; transform: translateY(-8px); } 100% { opacity: 0; transform: translateY(-14px); } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes keyHint {
  0%, 62%, 100% { color: var(--ink-50); border-color: var(--ink-14); transform: translateY(0); }
  70%, 84%      { color: var(--ruby); border-color: var(--ruby); transform: translateY(-2px); }
}

/* ----------------------------------------------------------- responsive */

@media (max-width: 1100px) {
  .top {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "title links"
      "title meters";
  }
  .meters { width: min(280px, 34vw); }
}

@media (pointer: coarse), (max-width: 760px) {
  .stage { grid-template-rows: minmax(0, 1fr) auto; }
  .controls {
    display: grid;
    grid-template-columns: repeat(3, 46px);
    grid-template-rows: repeat(2, 40px);
    gap: 6px;
    justify-content: center;
  }
  .ctrl {
    font: inherit;
    font-size: .875rem;
    color: var(--ink-70);
    background: transparent;
    border: 1px solid var(--ink-14);
    border-radius: 2px;
    display: grid;
    place-items: center;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    transition: color .18s var(--ease), border-color .18s var(--ease);
  }
  .ctrl:active { color: var(--ruby); border-color: var(--ruby); }
  .ctrl--up { grid-area: 1 / 2; }
  .ctrl--left { grid-area: 2 / 1; }
  .ctrl--down { grid-area: 2 / 2; }
  .ctrl--right { grid-area: 2 / 3; }
  .play { cursor: default; }
  .keys { display: none; }
}

@media (max-width: 760px) {
  .page {
    height: auto;
    min-height: 100svh;
    row-gap: clamp(18px, 3vh, 28px);
  }
  .top {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "links"
      "title"
      "meters";
    row-gap: clamp(18px, 3vh, 26px);
  }
  .links { justify-self: end; }
  .nutrition { justify-self: stretch; }
  .meters { width: 100%; }
  .play { height: min(56svh, 480px); }
  .word > span { font-size: 1.5rem; }
  .seg > span { font-size: 1.25rem; padding: 0 9px; }
}

@media (max-width: 420px) {
  .meter { grid-template-columns: 4rem minmax(0, 1fr); }
  .play { height: 52svh; }
  .word > span { font-size: 1.25rem; }
  .seg > span { font-size: 1.0625rem; padding: 0 8px; }
}

/* -------------------------------------------------------- reduced motion */

@media (prefers-reduced-motion: reduce) {
  .agent i::after { animation: none; opacity: .25; }
  .word > span { animation: fadeIn .3s linear both; }
  .seg > span { animation: fadeIn .2s linear both; }
  .word.is-eaten > span { animation: fadeOut .3s linear forwards; }
  .msg > span { animation: msgHold 1.6s linear forwards; }
  .key { animation: none !important; }
  .swap.is-out { transform: none; }
  .links a:hover .arrow { transform: none; }
  .prompt.is-gone { transform: translateX(-50%); }
  .meter__fill { transition-duration: .01ms; }
}

@keyframes fadeOut { to { opacity: 0; } }
@keyframes msgHold { 0%, 80% { opacity: 1; } 100% { opacity: 0; } }