:root {
  color-scheme: light;
  --paper: #f7f3ea;
  --ink: #181612;
  --muted: #61594d;
  --line: #d8cfc0;
  --panel: #fffaf0;
  --mint: #3f9a82;
  --mint-dark: #1f5c4f;
  --coral: #de6f52;
  --plum: #6c5a98;
  --gold: #d6a646;
  --shadow: 0 22px 70px rgba(28, 22, 14, 0.14);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 15% 10%, rgba(222, 111, 82, 0.18), transparent 26rem),
    linear-gradient(135deg, #f7f3ea 0%, #eef2e7 52%, #f2e8dc 100%);
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
textarea,
input {
  font: inherit;
}

button {
  border: 1px solid var(--line);
  border-radius: 8px;
  min-height: 42px;
  padding: 0 16px;
  background: #fffdf7;
  color: var(--ink);
  cursor: pointer;
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background 160ms ease;
}

button:hover {
  border-color: #a99c89;
  transform: translateY(-1px);
}

button:active {
  transform: translateY(0);
}

button.primary {
  background: var(--mint);
  border-color: var(--mint);
  color: white;
  font-weight: 750;
}

button:disabled {
  cursor: wait;
  opacity: 0.7;
}

.shell {
  width: min(1120px, calc(100vw - 28px));
  margin: 0 auto;
  padding: 28px 0;
}

.studio {
  display: grid;
  gap: 18px;
}

.masthead {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--mint-dark);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2.3rem, 7vw, 5.8rem);
  line-height: 0.92;
  letter-spacing: 0;
}

.status-pill {
  min-width: 168px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 14px;
  background: rgba(255, 250, 240, 0.78);
  color: var(--muted);
  font-size: 0.88rem;
  text-align: center;
}

#pulseCanvas {
  width: 100%;
  height: min(38vh, 360px);
  min-height: 230px;
  border: 1px solid rgba(97, 89, 77, 0.2);
  border-radius: 8px;
  background: #14130f;
  box-shadow: var(--shadow);
}

.workbench {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 16px;
}

.input-panel {
  display: grid;
  gap: 8px;
}

.input-panel span,
.readout span {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

textarea {
  width: 100%;
  min-height: 146px;
  resize: vertical;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  background: rgba(255, 250, 240, 0.9);
  color: var(--ink);
  box-shadow: 0 14px 36px rgba(28, 22, 14, 0.08);
  font-size: 1.2rem;
  line-height: 1.45;
}

textarea:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(63, 154, 130, 0.34);
  outline-offset: 2px;
}

.controls {
  display: grid;
  align-content: start;
  gap: 12px;
}

.mode-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

.mode-tabs button {
  padding: 0 10px;
  min-width: 0;
}

.mode-tabs .is-active {
  background: #181612;
  border-color: #181612;
  color: #fffaf0;
}

.switch-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.switch-row label {
  display: flex;
  min-height: 42px;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0 12px;
  background: rgba(255, 250, 240, 0.72);
  color: var(--muted);
  font-weight: 700;
}

.switch-row input {
  accent-color: var(--mint);
}

.button-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.share-fallback {
  display: block;
  overflow-wrap: anywhere;
  border: 1px dashed rgba(97, 89, 77, 0.36);
  border-radius: 8px;
  padding: 10px 12px;
  background: rgba(255, 250, 240, 0.86);
  color: var(--mint-dark);
  font-size: 0.84rem;
  line-height: 1.35;
}

.share-fallback[hidden] {
  display: none;
}

.readout {
  display: grid;
  grid-template-columns: 120px 120px minmax(0, 1fr);
  gap: 10px;
}

.readout div {
  min-height: 76px;
  display: grid;
  align-content: center;
  gap: 6px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 14px;
  background: rgba(255, 250, 240, 0.72);
}

.readout strong {
  overflow: hidden;
  color: var(--ink);
  font-size: 1.24rem;
  line-height: 1.1;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(92px, 1fr));
  gap: 8px;
}

.pulse-card {
  min-height: 88px;
  display: grid;
  align-content: space-between;
  gap: 8px;
  border: 1px solid rgba(97, 89, 77, 0.22);
  border-radius: 8px;
  padding: 10px;
  background: rgba(255, 250, 240, 0.78);
}

.pulse-card.is-active {
  border-color: var(--coral);
  background: #fff1e6;
}

.pulse-card b {
  overflow-wrap: anywhere;
  font-size: 0.98rem;
  line-height: 1.12;
}

.pulse-card span {
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 800;
}

@media (max-width: 780px) {
  .shell {
    width: min(100vw - 20px, 620px);
    padding: 18px 0;
  }

  .masthead {
    align-items: start;
    flex-direction: column;
  }

  .status-pill {
    width: 100%;
  }

  #pulseCanvas {
    height: 260px;
  }

  .workbench,
  .readout {
    grid-template-columns: 1fr;
  }

  .controls {
    gap: 10px;
  }

  .timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .button-grid,
  .switch-row {
    grid-template-columns: 1fr;
  }

  .mode-tabs {
    grid-template-columns: 1fr;
  }

  .readout div {
    min-height: 68px;
  }

  textarea {
    font-size: 1rem;
  }
}