/* Importing Google Fonts - Rubik + JetBrains Mono */
@import url("https://fonts.googleapis.com/css2?family=Rubik:wght@400;500;600;700&family=JetBrains+Mono:wght@500&display=swap");

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Rubik", sans-serif;
}

:root {
  --bg: #f4f5f9;
  --card: #ffffff;
  --text: #171a26;
  --muted: #6b7086;
  --border: #e3e5ee;
  --success: #16a34a;
  --error: #e5383b;
  --warning: #e8890c;
  --info: #2f6bff;
  --promise: #7c3aed;
}

body {
  min-height: 100vh;
  background:
    radial-gradient(circle at 0% 0%, rgba(47, 107, 255, 0.08), transparent 35%),
    radial-gradient(circle at 100% 100%, rgba(124, 58, 237, 0.08), transparent 35%),
    var(--bg);
  color: var(--text);
}

.page {
  display: grid;
  align-content: center;
  min-height: 100vh;
  max-width: 760px;
  margin: 0 auto;
  padding: 70px 20px 120px;
}

/* ---------- Intro ---------- */
.intro {
  margin-bottom: 40px;
  text-align: center;
}

.eyebrow {
  color: var(--info);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.intro h1 {
  margin: 14px 0 12px;
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  text-wrap: balance;
}

.intro h1 span {
  background: linear-gradient(90deg, var(--info), var(--promise));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.intro p {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.6;
}

/* ---------- Playground ---------- */
.playground {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 28px;
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: var(--card);
  box-shadow: 0 30px 70px -40px rgba(23, 26, 38, 0.3);
}

.group h2 {
  margin-bottom: 14px;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.fire {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.fire-btn {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fafbfd;
  color: var(--text);
  font-size: 0.93rem;
  font-weight: 500;
  cursor: pointer;
  transition: transform 0.15s, border-color 0.2s, box-shadow 0.2s;
}

.fire-btn:hover {
  border-color: currentColor;
  box-shadow: 0 6px 18px -10px currentColor;
}

.fire-btn:active {
  transform: scale(0.97);
}

.fire-btn:focus-visible,
.positions button:focus-visible {
  outline: 3px solid rgba(47, 107, 255, 0.4);
  outline-offset: 2px;
}

.fire-btn i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--c);
}

.fire-btn.success { --c: var(--success); }
.fire-btn.error { --c: var(--error); }
.fire-btn.warning { --c: var(--warning); }
.fire-btn.info { --c: var(--info); }
.fire-btn.promise { --c: var(--promise); }
.fire-btn.undo { --c: var(--text); }

/* Mini screen to pick a corner */
.positions {
  display: grid;
  grid-template-columns: repeat(3, 34px);
  grid-template-rows: 34px 34px;
  justify-content: space-between;
  align-content: space-between;
  width: 150px;
  height: 104px;
  padding: 8px;
  border: 2px solid var(--border);
  border-radius: 14px;
  background: #fafbfd;
}

.positions button {
  border: 0;
  border-radius: 8px;
  background: #e6e8f1;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
}

.positions button:hover {
  transform: scale(1.08);
}

.positions button[aria-checked="true"] {
  background: var(--info);
}

.code {
  grid-column: 1 / -1;
  padding: 16px 18px;
  border-radius: 14px;
  background: #11131c;
  color: #cdd3f0;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.8rem;
  line-height: 1.7;
  overflow-x: auto;
}

.code code {
  font-family: inherit;
}

/* =========================================================
   Toaster
   ========================================================= */
.toaster {
  position: fixed;
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: min(370px, calc(100vw - 32px));
  pointer-events: none;
}

.toaster.top-left,
.toaster.top-center,
.toaster.top-right {
  top: 20px;
}

.toaster.bottom-left,
.toaster.bottom-center,
.toaster.bottom-right {
  bottom: 20px;
  flex-direction: column-reverse;
}

.toaster.top-left,
.toaster.bottom-left {
  left: 20px;
}

.toaster.top-right,
.toaster.bottom-right {
  right: 20px;
}

.toaster.top-center,
.toaster.bottom-center {
  left: 50%;
  transform: translateX(-50%);
}

.toast {
  --c: var(--info);
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: start;
  gap: 12px;
  padding: 14px 14px 16px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--card);
  box-shadow: 0 18px 40px -18px rgba(23, 26, 38, 0.35), 0 2px 6px rgba(23, 26, 38, 0.05);
  overflow: hidden;
  pointer-events: auto;
  touch-action: pan-y;
  user-select: none;
  animation: toastIn 0.45s cubic-bezier(0.2, 0.9, 0.3, 1.2);
}

.top-left .toast,
.top-center .toast,
.top-right .toast {
  --from: -20px;
}

.toast {
  --from: 20px;
}

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateY(var(--from)) scale(0.94);
  }
}

.toast.success { --c: var(--success); }
.toast.error { --c: var(--error); }
.toast.warning { --c: var(--warning); }
.toast.info { --c: var(--info); }
.toast.loading { --c: var(--promise); }

/* Coloured strip on the left */
.toast::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 4px;
  background: var(--c);
}

.t-icon {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--c) 14%, transparent);
  color: var(--c);
}

.t-icon svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.6;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 30;
  stroke-dashoffset: 30;
  animation: draw 0.45s 0.15s ease forwards;
}

@keyframes draw {
  to {
    stroke-dashoffset: 0;
  }
}

.t-spinner {
  width: 18px;
  height: 18px;
  border: 2.5px solid color-mix(in srgb, var(--c) 25%, transparent);
  border-top-color: var(--c);
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.t-body {
  padding-top: 4px;
  min-width: 0;
}

.t-title {
  font-size: 0.95rem;
  font-weight: 600;
}

.t-msg {
  margin-top: 3px;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.45;
}

.t-action {
  margin-top: 10px;
  padding: 6px 12px;
  border: 0;
  border-radius: 8px;
  background: var(--text);
  color: #fff;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
}

.t-close {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border: 0;
  border-radius: 8px;
  background: none;
  color: var(--muted);
  font-size: 0.85rem;
  cursor: pointer;
}

.t-close:hover {
  background: #f1f2f7;
  color: var(--text);
}

/* Time left — runs as a CSS animation, pauses while you hover the stack */
.t-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: var(--c);
  opacity: 0.55;
  transform-origin: left;
  animation: shrink var(--duration, 4000ms) linear forwards;
}

.toaster:hover .t-progress,
.toast:focus-within .t-progress {
  animation-play-state: paused;
}

@keyframes shrink {
  to {
    transform: scaleX(0);
  }
}

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .playground {
    grid-template-columns: 1fr;
  }

  .fire {
    grid-template-columns: repeat(2, 1fr);
  }

  .toaster.top-left,
  .toaster.top-right,
  .toaster.bottom-left,
  .toaster.bottom-right {
    left: 16px;
    right: 16px;
    width: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .toast,
  .t-icon svg {
    animation: none;
    stroke-dashoffset: 0;
  }
}