:root {
  --paper: oklch(0.955 0.022 84);
  --paper-deep: oklch(0.9 0.038 84);
  --ink: oklch(0.205 0.025 205);
  --muted: oklch(0.48 0.035 205);
  --line: oklch(0.78 0.032 84);
  --panel: oklch(0.985 0.014 84);
  --accent: oklch(0.58 0.15 168);
  --accent-deep: oklch(0.39 0.1 168);
  --warn: oklch(0.63 0.15 42);
  --shadow: 0 22px 80px color-mix(in oklch, var(--ink), transparent 84%);
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
  --space-xl: 24px;
  --space-2xl: 32px;
  --space-3xl: 48px;
  color-scheme: light;
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--paper);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(120deg, color-mix(in oklch, var(--paper-deep), transparent 36%) 0 34%, transparent 34%),
    radial-gradient(circle at 86% 12%, oklch(0.86 0.08 168 / 0.44), transparent 28rem),
    var(--paper);
}

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.shell {
  width: min(1120px, calc(100% - 32px));
  min-height: 100vh;
  margin: 0 auto;
  padding: max(20px, env(safe-area-inset-top)) 0 32px;
  display: grid;
  align-content: start;
  gap: var(--space-xl);
}

.mast {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.brand-mark {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  box-shadow: 0 12px 28px oklch(0.22 0.04 205 / 0.18);
}

.eyebrow,
.overline {
  margin: 0;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 650;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2 {
  font-family: ui-rounded, "SF Pro Rounded", ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", sans-serif;
  letter-spacing: 0;
}

h1 {
  margin: 0;
  font-size: clamp(2.6rem, 8vw, 5.6rem);
  line-height: 0.88;
}

h2 {
  margin: var(--space-xs) 0 0;
  font-size: 1.45rem;
  line-height: 1;
}

.icon-button {
  width: 48px;
  height: 48px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  background: color-mix(in oklch, var(--panel), transparent 12%);
  box-shadow: 0 8px 24px oklch(0.22 0.04 205 / 0.08);
}

.status-plane {
  min-height: 330px;
  padding: clamp(24px, 5vw, 56px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-rows: auto 1fr;
  gap: var(--space-xl);
  border: 1px solid color-mix(in oklch, var(--line), transparent 24%);
  border-radius: 8px;
  background:
    linear-gradient(135deg, oklch(0.98 0.017 84 / 0.93), oklch(0.9 0.055 168 / 0.7)),
    var(--panel);
  box-shadow: var(--shadow);
  overflow: hidden;
  position: relative;
}

.status-plane::after {
  content: "";
  position: absolute;
  right: clamp(16px, 8vw, 96px);
  bottom: -62px;
  width: clamp(180px, 32vw, 360px);
  aspect-ratio: 1;
  border: 1px solid oklch(0.42 0.06 168 / 0.22);
  border-radius: 50%;
  pointer-events: none;
}

.signal,
.current-state,
.pulse-button {
  position: relative;
  z-index: 1;
}

.workspace-input {
  width: min(100%, 360px);
  margin-top: var(--space-sm);
  padding: 0;
  border: 0;
  border-bottom: 1px solid color-mix(in oklch, var(--ink), transparent 58%);
  border-radius: 0;
  color: var(--ink);
  background: transparent;
  font-family: ui-rounded, "SF Pro Rounded", ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  outline: none;
}

.workspace-input:focus {
  border-color: var(--accent-deep);
}

.current-state {
  grid-column: 1 / -1;
  align-self: end;
}

.state-word {
  margin-top: var(--space-sm);
  font-family: ui-rounded, "SF Pro Rounded", ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", sans-serif;
  font-size: clamp(4rem, 18vw, 11rem);
  font-weight: 800;
  line-height: 0.78;
  color: var(--accent-deep);
}

.state-meta {
  max-width: 58ch;
  margin: var(--space-xl) 0 0;
  color: color-mix(in oklch, var(--ink), transparent 16%);
  font-size: 1.08rem;
  line-height: 1.45;
}

.pulse-button {
  min-width: 168px;
  align-self: start;
  padding: var(--space-md) var(--space-lg);
  border: 1px solid oklch(0.28 0.05 205);
  border-radius: 8px;
  color: var(--paper);
  background: var(--ink);
  box-shadow: 0 14px 32px oklch(0.22 0.04 205 / 0.2);
  display: grid;
  gap: 2px;
  text-align: left;
}

.pulse-button small {
  color: oklch(0.82 0.02 84);
}

.pulse-button:active {
  transform: translateY(1px);
}

.grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: var(--space-xl);
}

.panel {
  padding: var(--space-xl);
  border: 1px solid color-mix(in oklch, var(--line), transparent 18%);
  border-radius: 8px;
  background: color-mix(in oklch, var(--panel), transparent 8%);
}

.panel-heading {
  margin-bottom: var(--space-xl);
}

.panel-heading.compact {
  margin-bottom: var(--space-md);
}

label {
  display: grid;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 650;
}

input,
textarea {
  width: 100%;
  border: 1px solid color-mix(in oklch, var(--line), transparent 8%);
  border-radius: 8px;
  padding: 11px 12px;
  color: var(--ink);
  background: oklch(0.99 0.01 84 / 0.78);
  outline: none;
}

textarea {
  resize: vertical;
}

input:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px oklch(0.72 0.11 168 / 0.2);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.actions button {
  min-height: 42px;
  border: 1px solid var(--accent-deep);
  border-radius: 8px;
  padding: 0 var(--space-lg);
  color: var(--paper);
  background: var(--accent-deep);
  font-weight: 650;
}

.actions .ghost {
  color: var(--ink);
  background: transparent;
  border-color: var(--line);
}

.hint {
  margin: var(--space-lg) 0 0;
  color: var(--muted);
  line-height: 1.45;
}

.activity-list {
  min-height: 180px;
  margin: 0;
  padding: 0;
  display: grid;
  align-content: start;
  gap: var(--space-md);
  list-style: none;
}

.activity-list li {
  padding: var(--space-md);
  border: 1px solid color-mix(in oklch, var(--line), transparent 32%);
  border-radius: 8px;
  background: oklch(0.98 0.014 84 / 0.7);
  display: flex;
  justify-content: space-between;
  gap: var(--space-md);
}

.activity-list strong {
  display: block;
  font-weight: 650;
}

.activity-list time,
.activity-list span {
  color: var(--muted);
}

.empty {
  color: var(--muted);
}

@media (max-width: 760px) {
  .shell {
    width: min(100% - 24px, 1120px);
  }

  .mast {
    align-items: flex-start;
  }

  .brand-mark {
    width: 46px;
    height: 46px;
  }

  .status-plane {
    min-height: 430px;
    grid-template-columns: 1fr;
  }

  .pulse-button {
    width: 100%;
  }

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

  .panel {
    padding: var(--space-lg);
  }

  .activity-list li {
    display: grid;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .status-plane,
  .panel {
    animation: lift 520ms cubic-bezier(0.22, 1, 0.36, 1) both;
  }

  .panel:nth-child(2) {
    animation-delay: 90ms;
  }

  @keyframes lift {
    from {
      opacity: 0;
      transform: translateY(12px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}