/* ==============================================================================
   DECODER · ECU LAB — UI Atoms, Controls & CRT Optical Engine
   web/components/atoms.css
   Aligned with UI Concepts (#kit) Glassmorphism & CRT Monitor Optics
   ============================================================================== */

/* --- Chips & Status Tags --- */
.chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  min-height: 22px;
  padding: 2px 9px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-subtle);
  color: var(--muted);
  font: 700 var(--kit-meta)/1.4 var(--mono);
  letter-spacing: .04em;
  white-space: nowrap;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  box-shadow: inset 0 1px 0 var(--glass-highlight);
  transition: border-color var(--motion-fast), color var(--motion-fast), background var(--motion-fast);
}

.chip::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 1px;
  background: currentColor;
  opacity: .8;
}

.chip:has(> .decoder-icon)::before {
  display: none;
}

.chip-status-label {
  display: inline-flex;
  align-items: center;
  line-height: 1;
  transform: translateY(1px);
}

.button > .decoder-icon,
.chip > .decoder-icon,
.monitor-bar-title > .decoder-icon,
.terminal-header-title .decoder-icon,
.notice > .decoder-icon,
.more-tab > .decoder-icon,
.admin-nav .decoder-icon {
  flex: 0 0 auto;
}

.notice > .decoder-icon {
  margin-top: 1px;
}

.chip-blue {
  color: var(--cyan);
  border-color: color-mix(in srgb, var(--cyan) 35%, transparent);
  background: color-mix(in srgb, var(--cyan) 12%, transparent);
}

.chip-green {
  color: var(--green);
  border-color: color-mix(in srgb, var(--green) 35%, transparent);
  background: color-mix(in srgb, var(--green) 12%, transparent);
}

.chip-amber {
  color: var(--amber);
  border-color: color-mix(in srgb, var(--amber) 35%, transparent);
  background: color-mix(in srgb, var(--amber) 12%, transparent);
}

.chip-rose {
  color: var(--rose);
  border-color: color-mix(in srgb, var(--rose) 35%, transparent);
  background: color-mix(in srgb, var(--rose) 12%, transparent);
}

/* --- Status LEDs --- */
.status-led {
  display: inline-block;
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--muted);
  transition: box-shadow var(--motion-feedback), background var(--motion-feedback);
}

.status-led.cyan {
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
}

.status-led.amber {
  background: var(--amber);
  box-shadow: 0 0 8px var(--amber);
}

.status-led.green {
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
}

.status-led.rose {
  background: var(--rose);
  box-shadow: 0 0 8px var(--rose);
}

.pulse {
  animation: led-pulse 1.6s infinite ease-in-out;
}

@keyframes led-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .45; transform: scale(0.92); box-shadow: 0 0 2px currentColor; }
}

/* --- Tactile Buttons (Aligned with UI Concepts .ui-button) --- */
.button-group, .balance-group, .stage-actions {
  display: flex;
  align-items: center;
  gap: var(--space-unit);
}

.button {
  --button-face: var(--ui-face);
  --button-edge: var(--ui-edge);
  --button-depth: 0 3px 9px -6px var(--shadow);
  position: relative;
  isolation: isolate;
  min-height: 41px;
  max-width: 100%;
  padding: 10px 16px;
  border: 1px solid var(--button-edge);
  border-radius: var(--ui-radius-button);
  background: linear-gradient(150deg, rgba(255, 255, 255, .09), transparent 64%), var(--button-face);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .22),
    inset 0 -1px 0 rgba(0, 0, 0, .06),
    var(--button-depth);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  color: var(--text);
  font: 500 13px/1.3 var(--ui-font);
  letter-spacing: .01em;
  cursor: pointer;
  white-space: nowrap;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-unit);
  transition: border-color .16s, box-shadow .16s, color .16s, transform .1s, background .16s;
}

.button::before {
  content: '';
  position: absolute;
  z-index: -1;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: linear-gradient(120deg, rgba(255, 255, 255, .15), transparent 50%);
  opacity: .35;
  transition: opacity .18s;
}

@media (hover: hover) {
  .button:hover:not(:disabled) {
    border-color: color-mix(in srgb, var(--ui-accent) 40%, var(--button-edge));
    box-shadow:
      inset 0 1px 0 rgba(255, 255, 255, .32),
      inset 0 -1px 0 rgba(0, 0, 0, .08),
      0 5px 14px -8px var(--shadow);
  }
  .button:hover:not(:disabled)::before {
    opacity: 1;
  }
}

.button:active:not(:disabled) {
  transform: translateY(1px);
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, .13), inset 0 -1px 0 rgba(255, 255, 255, .1);
}

.button:active:not(:disabled)::before {
  opacity: .12;
}

.button:focus-visible {
  outline: 2px solid var(--ui-accent);
  outline-offset: 3px;
}

.button:disabled {
  opacity: .42;
  cursor: not-allowed;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .06);
}

.button:disabled::before {
  opacity: 0;
}

.icon-button {
  min-height: 32px;
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  padding: 0;
  font-size: 14px;
}

.secondary {
  color: var(--muted);
  border-color: var(--ui-edge);
}

.outline-blue {
  color: var(--ui-accent);
  border-color: color-mix(in srgb, var(--ui-accent) 32%, var(--ui-edge));
  background: linear-gradient(150deg, rgba(255, 255, 255, .08), transparent 64%), color-mix(in srgb, var(--ui-accent) 5%, var(--ui-face));
}

.primary, .success {
  --button-face: color-mix(in srgb, var(--ui-accent) 92%, transparent);
  --button-edge: color-mix(in srgb, var(--ui-accent) 72%, var(--ink));
  background: linear-gradient(150deg, rgba(255, 255, 255, .04), transparent 64%), var(--button-face);
  color: var(--ui-on-accent);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .32),
    inset 0 -1px 0 rgba(0, 0, 0, .13),
    var(--button-depth);
}

.primary::before, .success::before {
  background: linear-gradient(120deg, rgba(255, 255, 255, .06), transparent 48%);
}

.button.ghost {
  border-color: transparent;
  background: transparent;
  color: var(--muted);
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.button.ghost::before {
  content: none;
}

.button[aria-busy="true"] {
  opacity: .85;
  cursor: wait;
}

.button[aria-busy="true"]::after {
  content: '';
  width: 12px;
  height: 12px;
  flex-shrink: 0;
  border: 1.5px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: control-spin .6s linear infinite;
}

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

.danger-small {
  min-height: 24px;
  padding: 3px 8px;
  font-size: var(--kit-meta);
  color: var(--rose);
  border-color: color-mix(in srgb, var(--rose) 40%, transparent);
}

.download-small {
  min-height: 30px;
  padding: 4px 10px;
  color: var(--cyan);
  border-color: color-mix(in srgb, var(--cyan) 42%, transparent);
  background: linear-gradient(150deg, rgba(255,255,255,.07), transparent 64%), color-mix(in srgb, var(--cyan) 6%, var(--ui-face));
}

/* ==============================================================================
   Hardware Monitor Chrome & Optical CRT Engine
   ============================================================================== */

/* Base hardware enclosure */
.glass-monitor {
  position: relative;
  min-width: 0;
  border: 1px solid var(--monitor-rim);
  border-radius: var(--radius-monitor);
  background: linear-gradient(145deg, rgba(255, 255, 255, .10), transparent 65%), var(--monitor-face);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate, 160%));
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate, 160%));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .22),
    inset 0 0 0 1px rgba(255, 255, 255, .04),
    inset 0 -1px 0 color-mix(in srgb, var(--cyan) 6%, transparent),
    0 12px 28px -12px var(--shadow);
  transition: border-color .20s ease, box-shadow .20s ease;
}

.glass-monitor:hover {
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .32),
    inset 0 0 0 1px rgba(255, 255, 255, .08),
    inset 0 -1px 0 color-mix(in srgb, var(--cyan) 10%, transparent),
    0 16px 36px -10px var(--shadow);
}

.glass-monitor:focus-within {
  border-color: color-mix(in srgb, var(--cyan) 55%, transparent);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .16), var(--focus-ring);
}

/* Integrated Monitor Header Chrome */
.monitor-bar {
  min-height: 34px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 7px 12px;
  border-bottom: 1px solid var(--border-subtle);
  font: 700 var(--kit-meta)/1.4 var(--mono);
  color: var(--muted);
  letter-spacing: .04em;
  background: linear-gradient(180deg, rgba(255, 255, 255, .03), transparent);
}

.monitor-bar-title {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--muted);
  min-width: 0;
  overflow-wrap: anywhere;
}

.monitor-meta {
  color: var(--cyan);
  opacity: .85;
  font: 700 var(--kit-meta)/1.4 var(--mono);
  letter-spacing: .06em;
  white-space: nowrap;
}

@media (max-width: 360px) {
  #app .monitor-bar {
    align-items: flex-start;
    flex-direction: column;
    gap: var(--space-half);
  }

  #app .monitor-meta {
    max-width: 100%;
    white-space: normal;
    overflow-wrap: anywhere;
  }
}

/* --- CRT Screen Optics Housing --- */
.crt-screen {
  position: relative;
  isolation: isolate;
  overflow: hidden;
}

/* 1. Curved Glass Reflection, Lens Curvature & Spherical Vignette */
.crt-screen::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 6;
  pointer-events: none;
  border-radius: inherit;
  background:
    radial-gradient(ellipse at 50% 46%, transparent 48%, var(--crt-edge) 100%),
    linear-gradient(138deg, rgba(255, 255, 255, .08), transparent 30% 80%, rgba(255, 255, 255, .025));
  box-shadow: inset 0 0 18px var(--crt-edge);
}

/* 2. 2D Kinematics: 3px Horizontal Raster + Trinitron Vertical RGB Phosphor Grille */
.crt-screen::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 5;
  pointer-events: none;
  border-radius: inherit;
  background:
    repeating-linear-gradient(0deg, var(--crt-lines) 0 1px, transparent 1px 3px),
    repeating-linear-gradient(90deg, rgba(56, 189, 248, .025) 0 1px, rgba(16, 185, 129, .02) 1px 2px, transparent 2px 3px);
}

/* 3. Analog Film Grain & Phosphor Noise */
.crt-noise {
  position: absolute;
  inset: -4%;
  z-index: 7;
  pointer-events: none;
  opacity: var(--crt-grain);
  background-image: var(--grain-texture);
  background-size: 150px 150px;
  mix-blend-mode: soft-light;
}

/* 4. Sweeping Electron Beam Roll (Cathode-Ray Refresh) */
.crt-roll {
  position: absolute;
  inset: -25% 0 auto;
  height: 25%;
  z-index: 4;
  pointer-events: none;
  opacity: var(--crt-beam);
  background: linear-gradient(
    transparent,
    color-mix(in srgb, var(--cyan) 32%, transparent) 65%,
    rgba(190, 241, 255, .32) 93%,
    transparent
  );
  animation: crt-scan 8s linear infinite;
  animation-play-state: running;
}

@keyframes crt-scan {
  from { transform: translateY(-100%); }
  to { transform: translateY(550%); }
}

/* Phosphor Bloom on CRT content */
.crt-glow, .crt-screen .terminal-output {
  text-shadow: 0 0 4px color-mix(in srgb, var(--cyan) 30%, transparent);
}

/* Analog CRT Tear & Glitch Keyframes */
@keyframes crt-tear {
  0%, 100% { transform: none; opacity: 1; }
  14% { transform: translateX(-2px); opacity: .94; }
  30% { transform: translateX(1px); }
  49% { transform: translateX(-1px); opacity: 1; }
  67% { transform: translateX(2px); }
  82% { transform: none; }
}

@keyframes crt-slice-cyan {
  0%, 100% { opacity: 0; clip-path: inset(25% 0 65%); transform: translate(0, 0); }
  14% { opacity: .6; clip-path: inset(25% 0 65%); transform: translateX(5px); }
  30% { opacity: .35; clip-path: inset(59% 0 35%); transform: translateX(-4px); }
  49% { opacity: .5; clip-path: inset(40% 0 56%); transform: translateX(4px); }
  67% { opacity: .25; clip-path: inset(73% 0 23%); transform: translateX(-3px); }
  82% { opacity: 0; }
}

@keyframes crt-slice-blue {
  0%, 100% { opacity: 0; clip-path: inset(61% 0 32%); transform: translate(0, 0); }
  14% { opacity: .4; clip-path: inset(61% 0 32%); transform: translateX(-5px); }
  30% { opacity: .5; clip-path: inset(30% 0 66%); transform: translateX(3px); }
  49% { opacity: .3; clip-path: inset(78% 0 18%); transform: translateX(-6px); }
  67% { opacity: .35; clip-path: inset(17% 0 79%); transform: translateX(2px); }
  82% { opacity: 0; }
}

.is-crt-glitch .crt-screen > *:not(.crt-noise):not(.crt-roll) {
  animation: crt-tear 190ms steps(1, end) both;
}

/* Backward compatibility for scan-line */
.scan-line {
  display: none !important;
}

/* --- Form controls --- */
label {
  display: grid;
  gap: 5px;
  color: var(--muted);
  min-width: 0;
  font: 500 12px/1.5 var(--ui-font);
}

input:where(:not([type="checkbox"]):not([type="radio"]):not([type="range"]):not([type="hidden"])), textarea, select {
  width: 100%;
  min-width: 0;
  min-height: 42px;
  padding: 11px 12px;
  border: 1px solid var(--ui-edge);
  border-radius: var(--radius-control);
  outline: none;
  background: var(--ui-field);
  color: var(--text);
  font: 400 13px/1.5 var(--ui-font);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  box-shadow: inset 0 1px 0 var(--glass-highlight);
  transition: border-color var(--motion-fast), box-shadow var(--motion-fast);
}

/* Decoder select: custom glass popup backed by the original form value. */
.decoder-select {
  position: relative;
  display: block;
  width: 100%;
  min-width: 0;
  border-radius: var(--radius-control);
}

.decoder-select-trigger {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  min-width: 0;
  min-height: 42px;
  padding: 10px 11px 10px 12px;
  border: 1px solid var(--ui-edge);
  border-radius: var(--radius-control);
  color: var(--text);
  background:
    linear-gradient(90deg, transparent calc(100% - 38px), color-mix(in srgb, var(--ui-edge) 82%, transparent) calc(100% - 38px), color-mix(in srgb, var(--ui-edge) 82%, transparent) calc(100% - 37px), transparent calc(100% - 37px)),
    linear-gradient(145deg, rgba(255,255,255,.065), transparent 72%),
    var(--ui-field);
  box-shadow: inset 0 1px 0 var(--glass-highlight);
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: .02em;
  text-align: left;
  cursor: pointer;
  transition: border-color var(--motion-fast), box-shadow var(--motion-fast), background-color var(--motion-fast);
}

.decoder-select-value {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.decoder-select-trigger > .decoder-icon {
  flex: 0 0 16px;
  margin-left: auto;
  width: 16px;
  height: 16px;
  color: var(--muted);
  pointer-events: none;
  transition: color var(--motion-fast), transform var(--motion-fast);
}

.decoder-select-trigger:hover:not(:disabled) {
  border-color: color-mix(in srgb, var(--ui-accent) 34%, var(--ui-edge));
  background-color: color-mix(in srgb, var(--ui-accent) 3%, var(--ui-field));
}

.decoder-select-trigger:focus-visible,
.decoder-select.is-open .decoder-select-trigger {
  outline: none;
  border-color: var(--ui-accent);
  box-shadow: inset 0 1px 0 var(--glass-highlight), var(--ui-focus-ring);
}

.decoder-select.is-open .decoder-select-trigger > .decoder-icon {
  color: var(--ui-accent);
  transform: rotate(180deg);
}

.decoder-select-trigger:disabled { opacity: .45; cursor: not-allowed; }

.decoder-select-menu {
  position: absolute;
  z-index: 80;
  top: calc(100% + 7px);
  left: 0;
  width: 100%;
  max-height: 280px;
  overflow: auto;
  padding: 7px;
  border: 1px solid color-mix(in srgb, var(--ui-accent) 24%, var(--ui-edge));
  border-radius: calc(var(--radius-control) + 2px);
  background:
    linear-gradient(145deg, color-mix(in srgb, var(--ui-accent) 6%, transparent), transparent 62%),
    color-mix(in srgb, var(--bg) 88%, var(--ui-field));
  box-shadow: var(--glass-sheen), 0 24px 54px -20px var(--shadow);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate, 160%));
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate, 160%));
  overscroll-behavior: contain;
  scrollbar-width: thin;
}

.decoder-select-caption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 3px 5px 8px;
  margin-bottom: 4px;
  border-bottom: 1px solid var(--ui-edge);
  color: var(--faint);
  font: 8px/1.4 var(--mono);
  letter-spacing: .1em;
}

.decoder-select-caption span:last-child { color: var(--ui-accent); opacity: .68; }

.decoder-select.opens-up .decoder-select-menu {
  top: auto;
  bottom: calc(100% + 7px);
}

.decoder-select-option {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr) 18px;
  align-items: center;
  gap: 8px;
  width: 100%;
  min-height: 38px;
  padding: 8px 9px;
  border: 1px solid transparent;
  border-radius: max(5px, calc(var(--radius-control) - 3px));
  color: var(--muted);
  background: transparent;
  font: 11px/1.45 var(--mono);
  text-align: left;
  cursor: pointer;
}

.decoder-select-option + .decoder-select-option { margin-top: 3px; }
.decoder-select-option:hover,
.decoder-select-option.is-active {
  color: var(--text);
  border-color: color-mix(in srgb, var(--ui-accent) 16%, transparent);
  background: color-mix(in srgb, var(--ui-accent) 7%, transparent);
}

.decoder-select-option[aria-selected="true"] {
  color: var(--ui-accent);
  border-color: color-mix(in srgb, var(--ui-accent) 24%, transparent);
  background: color-mix(in srgb, var(--ui-accent) 9%, transparent);
}

.decoder-select-option:disabled { opacity: .4; cursor: not-allowed; }
.decoder-select-index { color: var(--faint); font-size: 9px; letter-spacing: .08em; }
.decoder-select-label { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.decoder-select-option > .decoder-icon { opacity: 0; }
.decoder-select-option[aria-selected="true"] > .decoder-icon { opacity: 1; }

/* A real native input remains in control; only its visual caret becomes an underscore. */
.decoder-text-entry {
  position: relative;
  display: block;
  width: 100%;
  min-width: 0;
}

.decoder-text-entry > input { caret-color: transparent; }
.decoder-text-entry.is-composing > input { caret-color: var(--ui-accent); }
.decoder-text-mirror {
  position: absolute;
  visibility: hidden;
  width: max-content;
  white-space: pre;
  pointer-events: none;
}

.decoder-text-caret {
  position: absolute;
  z-index: 2;
  top: 50%;
  color: var(--ui-accent);
  font: 500 13px/1 var(--mono);
  pointer-events: none;
  transform: translateY(-40%);
  animation: decoder-caret-blink 1.05s steps(1, end) infinite;
}

.decoder-text-caret[hidden] { display: none; }

@keyframes decoder-caret-blink {
  0%, 56% { opacity: 1; }
  57%, 100% { opacity: 0; }
}

input::placeholder, textarea::placeholder {
  color: color-mix(in srgb, var(--muted) 65%, transparent);
  opacity: 1;
}

:is(input:where(:not([type="checkbox"]):not([type="radio"]):not([type="range"]):not([type="hidden"])), textarea, select):focus-visible {
  border-color: var(--ui-accent);
  box-shadow: inset 0 1px 0 var(--glass-highlight), var(--ui-focus-ring);
}

input:disabled, textarea:disabled, select:disabled {
  opacity: .45;
  cursor: not-allowed;
}

input[readonly], textarea[readonly] {
  color: var(--muted);
}

input:is([aria-invalid="true"], :user-invalid), textarea:is([aria-invalid="true"], :user-invalid) {
  border-color: var(--rose);
}

input[aria-invalid="true"]:focus-visible, textarea[aria-invalid="true"]:focus-visible {
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--rose) 18%, transparent);
}

textarea {
  min-height: 96px;
  resize: vertical;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.form-grid .full {
  grid-column: 1 / -1;
}

.form-error {
  min-height: 16px;
  margin-top: 8px;
  color: var(--rose);
  font-size: var(--kit-meta);
}

@media (max-width: 560px) {
  input:where(:not([type="checkbox"]):not([type="radio"]):not([type="range"]):not([type="hidden"])), textarea, select {
    font-size: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .decoder-text-caret { animation: none; }
}

@media (forced-colors: active) {
  .decoder-select select { appearance: auto; -webkit-appearance: auto; }
  .decoder-select > .decoder-icon { display: none; }
  .decoder-text-entry > input { caret-color: auto; }
  .decoder-text-caret { display: none; }
}

/* --- Notices & Notifications --- */
.notice {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  padding: 10px 12px;
  margin-bottom: 12px;
  border: 1px solid color-mix(in srgb, var(--amber) 30%, transparent);
  border-radius: 8px;
  color: var(--amber);
  background: color-mix(in srgb, var(--amber) 8%, transparent);
  font-size: var(--kit-caption);
  line-height: 1.5;
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}

.notice .status-led {
  margin-top: 5px;
}

.notice.danger {
  color: var(--rose);
  border-color: color-mix(in srgb, var(--rose) 35%, transparent);
  background: color-mix(in srgb, var(--rose) 8%, transparent);
}

/* --- Toast Notification --- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 100;
  transform: translate(-50%, 20px);
  opacity: 0;
  max-width: min(420px, calc(100vw - 32px));
  padding: 11px 16px;
  border: 1px solid color-mix(in srgb, var(--cyan) 40%, var(--border));
  border-radius: 10px;
  color: var(--text);
  background: var(--bg-card);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .25),
    0 16px 40px var(--shadow);
  transition: opacity var(--motion-feedback), transform var(--motion-feedback);
  pointer-events: none;
  font: 600 var(--kit-ui)/1.4 var(--mono);
}

.toast.visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

[hidden] { display: none !important; }
.ds-surface { padding: 20px; border: 1px solid var(--border); border-radius: var(--radius-monitor); background: var(--bg-card); box-shadow: inset 0 1px 0 var(--glass-highlight), 0 8px 28px -14px var(--shadow); backdrop-filter: blur(var(--glass-blur)); -webkit-backdrop-filter: blur(var(--glass-blur)); min-width: 0; }
.history-item:focus-visible { outline: 2px solid var(--ui-accent); outline-offset: 2px; }
.button[aria-busy="true"] { cursor: progress; }
.button { white-space: normal; overflow-wrap: anywhere; }

.ds-surface h2 { margin: 0 0 12px; font: 500 15px var(--ui-font); }