/* OopsCode animated logo: styles.
   Colours were sampled from the supplied logo. Timing lives in script.js (CONFIG). */
:root {
  --oc-bg: #122D28;
  --oc-mint: #6FDFB2;
  --oc-mint-rgb: 111 223 178;
  --oc-white: #FEFDFE;
  --oc-final-glow: .45;   /* resting halo opacity once the logo has assembled */
  --oc-time-scale: 1;     /* 1 = ~4.4s intro, 1.5 = slower, .75 = faster (read by script.js) */
  --oc-logo-width: min(92vw, 105vh, 880px);
}
@supports (width: 1dvh) { :root { --oc-logo-width: min(92vw, 105dvh, 880px); } }

*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; margin: 0; overflow: hidden; overscroll-behavior: none; background: var(--oc-bg); }

.oc-stage {
  position: fixed; inset: 0; display: flex; background: var(--oc-bg); overflow: auto;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}
.oc-compose { margin: auto; display: flex; flex-direction: column; align-items: center; width: min(92vw, 880px); max-width: 100%; }
.oc-focal {
  position: absolute; inset: 0; pointer-events: none; --final: .3;
  background: radial-gradient(circle min(62vmin, 560px) at 50% 50%, rgb(var(--oc-mint-rgb) / .17), transparent);
}

.oc-logo-button {
  display: block; margin: 0; padding: 0; border: 0; background: none; color: inherit; line-height: 0;
  cursor: pointer; border-radius: 24px; -webkit-tap-highlight-color: transparent;
  touch-action: manipulation; -webkit-user-select: none; user-select: none;
}
.oc-logo-button:focus-visible { outline: 2px solid rgb(var(--oc-mint-rgb) / .7); outline-offset: 6px; }
.oc-logo { display: block; width: var(--oc-logo-width); height: auto; aspect-ratio: 940 / 700; }

.oc-mint  { fill: var(--oc-mint); }
.oc-white { fill: var(--oc-white); }
.oc-halo  { fill: var(--oc-mint); --final: var(--oc-final-glow); }
.oc-sheen { --final: 0; }

/* Every animated node rests in its final state; JS-enabled pages start hidden until the intro plays. */
[data-anim] { opacity: var(--final, 1); transform-box: fill-box; transform-origin: 50% 50%; }
[data-anim="underscore"] { transform-origin: 0 50%; }
.js [data-anim] { opacity: 0; }
.js.is-static [data-anim] { opacity: var(--final, 1); }  /* reduced motion: show the finished logo */

/* Name prompt. Shown after the intro; logo geometry and timing stay in script.js. */
.oc-stage.is-named .oc-logo {
  width: min(var(--oc-logo-width), max(9.5rem, calc(var(--oc-visible-height, 100dvh) - 12rem)));
  transition: width 700ms cubic-bezier(.16, 1, .3, 1);
}

.oc-name {
  width: min(92vw, 26rem);
  max-height: 0;
  margin-top: 0;
  overflow: hidden;
  color: var(--oc-white);
  font-family: "Avenir Next", "Segoe UI", "Helvetica Neue", Helvetica, Arial, "Kohinoor Bangla", "Nirmala UI", "Noto Sans Bengali", "Noto Sans", sans-serif;
  text-align: center;
  opacity: 0;
  transform: translateY(12px);
}
.oc-stage.is-named .oc-name {
  max-height: 18rem;
  margin-top: calc(var(--oc-logo-width) * -0.04);
  overflow: visible;
  opacity: 1;
  transform: none;
  transition: max-height 700ms cubic-bezier(.16, 1, .3, 1), margin-top 700ms cubic-bezier(.16, 1, .3, 1), opacity 700ms cubic-bezier(.16, 1, .3, 1), transform 700ms cubic-bezier(.16, 1, .3, 1);
}

.oc-name-slot { display: grid; justify-items: center; width: 100%; }
.oc-name-form,
.oc-name-result {
  grid-area: 1 / 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  transition: opacity 420ms ease, transform 420ms cubic-bezier(.16, 1, .3, 1);
}
.oc-name-result { opacity: 0; visibility: hidden; transform: translateY(8px); pointer-events: none; }
.oc-name.is-revealed .oc-name-form { opacity: 0; visibility: hidden; transform: translateY(-8px); pointer-events: none; }
.oc-name.is-revealed .oc-name-result { opacity: 1; visibility: visible; transform: none; pointer-events: auto; }

.oc-name-prompt {
  margin: 0 0 0.85rem;
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  font-weight: 500;
  line-height: 1.35;
  color: rgb(254 253 254 / .92);
}
.oc-name-input {
  width: min(100%, 16.5rem);
  margin: 0;
  padding: 0.4rem 0.15rem 0.5rem;
  border: 0;
  border-bottom: 1px solid rgb(var(--oc-mint-rgb) / .5);
  border-radius: 0;
  background: transparent;
  color: var(--oc-white);
  font: inherit;
  font-size: 16px;
  line-height: 1.4;
  text-align: center;
  caret-color: var(--oc-mint);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}
.oc-name-input::placeholder { color: rgb(254 253 254 / .4); }
.oc-name-input:focus { border-bottom-color: var(--oc-mint); }
.oc-name-form.is-invalid .oc-name-input { border-bottom-color: var(--oc-mint); }

.oc-name-hint {
  margin: 0.55rem 0 0;
  min-height: 1.1em;
  font-size: 0.8rem;
  line-height: 1.3;
  color: rgb(var(--oc-mint-rgb) / .9);
}

.oc-name-submit {
  margin-top: 0.95rem;
  padding: 0.42rem 0.95rem;
  border: 1px solid rgb(var(--oc-mint-rgb) / .45);
  border-radius: 999px;
  background: rgb(var(--oc-mint-rgb) / .08);
  color: var(--oc-mint);
  font: inherit;
  font-size: 0.92rem;
  line-height: 1.2;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.oc-name-submit:hover { background: rgb(var(--oc-mint-rgb) / .16); border-color: rgb(var(--oc-mint-rgb) / .75); }
.oc-name-submit:focus-visible,
.oc-name-again:focus-visible,
.oc-name-input:focus-visible { outline: 2px solid rgb(var(--oc-mint-rgb) / .75); outline-offset: 4px; }

.oc-name-message {
  margin: 0.15rem 0 0;
  max-width: 22rem;
  padding: 0 0.12em;
  font-size: clamp(1.28rem, 4.6vw, 1.75rem);
  font-weight: 560;
  line-height: 1.45;
  text-wrap: balance;
  background-image: linear-gradient(transparent 66%, rgb(var(--oc-mint-rgb) / .28) 66% 90%, transparent 90%);
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}
.oc-name-message.is-special {
  background-image: linear-gradient(transparent 62%, rgb(var(--oc-mint-rgb) / .4) 62% 92%, transparent 92%);
}
.oc-name-message.is-in { animation: oc-name-rise 720ms cubic-bezier(.16, 1, .3, 1) both; }
.oc-name-message.is-special.is-in { animation: oc-name-play 820ms cubic-bezier(.22, 1.2, .36, 1) both; }

.oc-name-again {
  margin-top: 0.95rem;
  padding: 0.2rem 0.1rem;
  border: 0;
  background: none;
  color: rgb(254 253 254 / .66);
  font: inherit;
  font-size: 0.82rem;
  line-height: 1.3;
  text-decoration: underline;
  text-underline-offset: 0.22em;
  text-decoration-color: rgb(var(--oc-mint-rgb) / .5);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.oc-name-again:hover { color: var(--oc-white); }

@keyframes oc-name-rise {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}
@keyframes oc-name-play {
  0% { opacity: 0; transform: translateY(16px) rotate(-1.4deg) scale(.94); }
  58% { opacity: 1; transform: translateY(-3px) rotate(.5deg) scale(1.03); }
  100% { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  .oc-stage.is-named .oc-logo,
  .oc-stage.is-named .oc-name,
  .oc-name-form,
  .oc-name-result,
  .oc-name-message.is-in,
  .oc-name-message.is-special.is-in {
    transition: none;
    animation: none;
  }
}