:root {
  --base: #f4f6f4;
  --glow-a: rgba(120, 180, 145, 0.52);  /* sage green */
  --glow-b: rgba(130, 170, 215, 0.42);  /* cornflower */
  --glow-c: rgba(175, 158, 215, 0.36);  /* soft violet */
  --glow-d: rgba(110, 185, 178, 0.42);  /* teal */
  --text: #1f2733;
  --muted: #5a6a62;
  --line: #c4d4c8;
  --accent: #2a7a4b;
  --ink: #f4f7fb;
  --ok: #4d8f66;
  --warn: #9f8a78;
  --idle: #97ab9d;
  --panel: rgba(237, 244, 239, 0.82);
  --mono: "IBM Plex Mono", monospace;
  --faq-width: 328px;
  --faq-tab-width: 54px;
  --viewport-inset: 14px;
  --top-control-size: 34px;
  --faq-top-offset: calc(var(--top-control-size) * 2);
  --faq-inner-gap: 28px;
}

:root[data-theme="light"] {
  --base: #f4f6f4;
  --glow-a: rgba(120, 180, 145, 0.52);
  --glow-b: rgba(130, 170, 215, 0.42);
  --glow-c: rgba(175, 158, 215, 0.36);
  --glow-d: rgba(110, 185, 178, 0.42);
  --text: #1f2733;
  --muted: #5a6a62;
  --line: #c4d4c8;
  --accent: #2a7a4b;
  --ink: #f4f7fb;
  --ok: #4d8f66;
  --warn: #9f8a78;
  --idle: #97ab9d;
  --panel: rgba(237, 244, 239, 0.82);
}

:root[data-theme="dark"] {
  --base: #080d09;
  --glow-a: rgba(22, 88, 50, 0.62);   /* deep forest green */
  --glow-b: rgba(10, 44, 78, 0.55);   /* deep ocean blue */
  --glow-c: rgba(46, 18, 74, 0.45);   /* deep purple */
  --glow-d: rgba(8, 68, 60, 0.52);    /* deep teal */
  --text: #d4e3d8;
  --muted: #8aa396;
  --line: #243d2e;
  --accent: #56b376;
  --ink: #09130b;
  --ok: #74ca92;
  --warn: #c7a58f;
  --idle: #5a7464;
  --panel: rgba(10, 18, 13, 0.80);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: linear-gradient(
    132deg,
    color-mix(in srgb, var(--base) 92%, var(--glow-a) 8%),
    color-mix(in srgb, var(--base) 94%, var(--glow-b) 6%),
    color-mix(in srgb, var(--base) 93%, var(--glow-c) 7%),
    color-mix(in srgb, var(--base) 94%, var(--glow-d) 6%),
    color-mix(in srgb, var(--base) 92%, var(--glow-a) 8%)
  );
  background-size: 320% 320%;
  animation: baseDrift 14s ease-in-out infinite alternate;
  color: var(--text);
  font-family: var(--mono);
  min-height: 100vh;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 20vh 24px 170px;
  position: relative;
  overflow-x: hidden;
  isolation: isolate;
}

body.drawer-open {
  overflow-x: hidden;
}

/* Soft atmospheric blob field — blurred so all edges dissolve */
body::before {
  content: "";
  position: fixed;
  inset: -25%;
  pointer-events: none;
  background:
    radial-gradient(ellipse 68% 54% at 14% 28%,  var(--glow-a), transparent 64%),
    radial-gradient(ellipse 60% 72% at 88% 72%,  var(--glow-b), transparent 64%),
    radial-gradient(ellipse 78% 48% at 72% 12%,  var(--glow-c), transparent 68%),
    radial-gradient(ellipse 52% 68% at 38% 88%,  var(--glow-d), transparent 64%);
  filter: blur(52px);
  animation: blobDrift 18s ease-in-out infinite alternate;
  z-index: -1;
}

@keyframes blobDrift {
  0%   { transform: translate3d(0%,    0%,   0) scale(1.00); }
  25%  { transform: translate3d(4.2%, -2.6%, 0) scale(1.04); }
  55%  { transform: translate3d(-3.2%, 4.6%, 0) scale(0.98); }
  80%  { transform: translate3d(5.2%,  2.1%, 0) scale(1.05); }
  100% { transform: translate3d(-2.1%, 5.1%, 0) scale(1.02); }
}

@keyframes baseDrift {
  0% { background-position: 0% 16%; }
  50% { background-position: 62% 88%; }
  100% { background-position: 100% 24%; }
}

.layout-shell {
  width: 100%;
}

.page {
  width: 100%;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
  display: flex;
  flex-direction: column;
  gap: 18px;
  transition: margin 0.32s ease, max-width 0.32s ease;
}

body.drawer-open .page {
  max-width: min(760px, calc(100vw - var(--faq-width) - var(--faq-inner-gap) - (var(--viewport-inset) * 2)));
  margin-left: auto;
  margin-right: calc(var(--faq-width) + var(--faq-inner-gap) + var(--viewport-inset));
}

header {
  padding-right: 52px;
}

.wordmark {
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted);
}

main {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 20px;
}

.input-row {
  display: flex;
  gap: 8px;
}

.form-feedback {
  margin-top: 8px;
  min-height: 18px;
  font-size: 12px;
  line-height: 1.45;
  color: var(--muted);
}

.form-feedback.error {
  color: var(--warn);
}

.form-feedback.success {
  color: var(--ok);
}

input[type="url"] {
  flex: 1;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  padding: 10px 12px;
  font: inherit;
  font-size: 14px;
  color: var(--text);
}

input[type="url"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 16%, transparent);
}

input[type="url"].invalid {
  border-color: var(--warn);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--warn) 16%, transparent);
}

input[type="url"].submitted {
  border-color: color-mix(in srgb, var(--ok) 44%, var(--line) 56%);
  background: color-mix(in srgb, var(--ok) 10%, var(--panel) 90%);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--ok) 14%, transparent);
}

input[type="url"].shake {
  animation: inputShake 0.32s ease;
}

@keyframes inputShake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-4px); }
  40% { transform: translateX(4px); }
  60% { transform: translateX(-3px); }
  80% { transform: translateX(3px); }
}

button {
  border: none;
  border-radius: 6px;
  padding: 10px 14px;
  font: inherit;
  font-size: 13px;
  cursor: pointer;
  background: var(--accent);
  color: var(--ink);
  white-space: nowrap;
  transition: transform 0.12s ease, filter 0.12s ease, opacity 0.12s ease;
}

button:hover { filter: brightness(0.96); }

button:active {
  transform: translateY(1px) scale(0.985);
}

button:disabled {
  opacity: 0.62;
  cursor: wait;
  filter: none;
}

#preflightButton,
#submitSiteButton {
  min-width: 110px;
}

#preflightButton.loading,
#submitSiteButton.loading {
  transform: translateY(1px);
}

button.secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
}

.github-chip {
  position: fixed;
  top: 14px;
  left: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 9px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  color: var(--muted);
  font: 500 11px/1 var(--mono);
  text-decoration: none;
  backdrop-filter: blur(4px);
  z-index: 30;
  transition: color 0.15s, border-color 0.15s;
}

.github-chip:hover {
  color: var(--text);
  border-color: var(--accent);
}

.github-chip svg {
  width: 14px;
  height: 14px;
  fill: currentColor;
  flex-shrink: 0;
  display: block;
}

.command-chip {
  position: fixed;
  top: 49px;
  left: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 9px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  color: color-mix(in srgb, var(--text) 82%, var(--muted) 18%);
  font: 500 11px/1 var(--mono);
  letter-spacing: 0.01em;
  cursor: pointer;
  backdrop-filter: blur(4px);
  z-index: 30;
  transition: color 0.15s, border-color 0.15s;
}

.command-chip::before {
  content: "";
  width: 14px;
  height: 14px;
  background: url('./favicon-32.png') center/cover no-repeat;
  flex-shrink: 0;
  display: block;
}

.command-chip:hover {
  color: var(--text);
  border-color: var(--accent);
}

.command-chip:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 18%, transparent);
}

.theme-fab {
  position: fixed;
  top: var(--viewport-inset);
  right: var(--viewport-inset);
  width: var(--top-control-size);
  height: var(--top-control-size);
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  z-index: 30;
}

.faq-tab {
  position: fixed;
  top: var(--viewport-inset);
  right: 56px;
  height: var(--top-control-size);
  min-width: var(--faq-tab-width);
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  color: var(--muted);
  font: 500 11px/1 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  backdrop-filter: blur(4px);
  z-index: 31;
}

.faq-tab[aria-expanded="true"] {
  color: var(--text);
  border-color: color-mix(in srgb, var(--line) 70%, var(--accent) 30%);
  background: color-mix(in srgb, var(--panel) 94%, var(--accent) 6%);
}

.theme-fab svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
}

.checks {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 10px 0 0;
  border-top: 1px solid var(--line);
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.check {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--muted);
  padding: 7px 9px;
  border: 1px solid transparent;
  border-radius: 6px;
  transition: color 0.18s ease, border-color 0.18s ease, background 0.18s ease, transform 0.18s ease;
}

.check.active {
  color: var(--text);
  border-color: color-mix(in srgb, var(--line) 82%, var(--accent) 18%);
  background: color-mix(in srgb, var(--panel) 82%, transparent);
  transform: translateX(2px);
}

.check.pass {
  color: var(--text);
  border-color: color-mix(in srgb, var(--ok) 38%, var(--line) 62%);
  background: color-mix(in srgb, var(--ok) 10%, transparent);
}

.check.fail {
  color: var(--text);
  border-color: color-mix(in srgb, var(--warn) 42%, var(--line) 58%);
  background: color-mix(in srgb, var(--warn) 10%, transparent);
}

.indicator {
  position: relative;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.indicator.idle { background: var(--idle); opacity: 0.75; }
.indicator.ok { background: var(--ok); }
.indicator.warn {
  background: transparent;
}

.indicator.warn::before,
.indicator.warn::after {
  content: "";
  position: absolute;
  top: 4px;
  left: -1px;
  width: 12px;
  height: 1.5px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--warn) 88%, white 12%);
  opacity: 0.92;
}

.indicator.warn::before {
  transform: rotate(45deg);
}

.indicator.warn::after {
  transform: rotate(-45deg);
}

.indicator.spin { background: var(--idle); animation: pulse 1s infinite; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.quick-links {
  font-size: 12px;
  color: var(--muted);
  display: flex;
  gap: 8px;
  align-items: center;
}

.quick-links a {
  color: var(--muted);
  text-decoration: none;
}

.quick-links a:hover { color: var(--text); }

.submit-block {
  border-top: 1px solid var(--line);
  padding-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.submit-block.success {
  gap: 12px;
}

.submit-block p,
.submit-note {
  font-size: 13px;
  color: var(--muted);
}

.submit-success {
  padding: 12px;
  border: 1px solid color-mix(in srgb, var(--ok) 34%, var(--line) 66%);
  border-radius: 8px;
  background: color-mix(in srgb, var(--ok) 10%, transparent);
  animation: submitSettle 0.26s ease;
}

.submit-success-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 8px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--ok) 18%, transparent);
  color: var(--text);
  font-size: 11px;
  margin-bottom: 8px;
}

.submit-success p {
  color: var(--text);
  line-height: 1.5;
  word-break: break-word;
}

.submit-note {
  color: var(--text);
}

.submit-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

@keyframes submitSettle {
  0% {
    opacity: 0;
    transform: translateY(6px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.faq-drawer {
  position: fixed;
  top: var(--faq-top-offset);
  bottom: auto;
  right: var(--viewport-inset);
  width: min(calc(100vw - 120px - var(--viewport-inset)), var(--faq-width));
  visibility: hidden;
  overflow: visible;
  opacity: 0;
  transform: translateX(calc(100% + 18px));
  transition: transform 0.32s ease, opacity 0.18s ease, visibility 0s linear 0.32s;
  pointer-events: none;
}

body.drawer-open .faq-drawer {
  visibility: visible;
  opacity: 1;
  transform: translateX(0);
  transition: transform 0.32s ease, opacity 0.18s ease;
  pointer-events: auto;
}

.meta-block {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  backdrop-filter: blur(2px);
  pointer-events: auto;
}

.faq-block {
  width: 100%;
  max-height: min(68vh, calc(100vh - var(--faq-top-offset) - 24px));
  justify-content: flex-start;
  overflow-y: auto;
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.08);
  will-change: transform;
}

.meta-block h2 {
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
}

details {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 7px 9px;
  background: color-mix(in srgb, var(--panel) 85%, transparent);
  transition: border-color 0.18s ease, background 0.18s ease, opacity 0.18s ease, transform 0.18s ease;
}

.faq-block details[open] {
  border-color: color-mix(in srgb, var(--line) 70%, var(--accent) 30%);
  background: color-mix(in srgb, var(--panel) 92%, var(--accent) 8%);
}

summary {
  cursor: pointer;
  font-size: 12px;
  list-style: none;
}

summary::-webkit-details-marker {
  display: none;
}

.faq-block summary::after {
  content: '+';
  float: right;
  color: var(--muted);
}

.faq-block details[open] summary::after {
  content: '−';
  color: var(--text);
}

details p {
  margin-top: 8px;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.5;
}

.meta-block a {
  color: color-mix(in srgb, var(--text) 78%, var(--accent) 22%);
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--line) 45%, var(--accent) 55%);
  text-underline-offset: 2px;
  transition: color 0.15s ease, text-decoration-color 0.15s ease;
}

.meta-block a:visited {
  color: color-mix(in srgb, var(--text) 72%, var(--accent) 28%);
}

.meta-block a:hover {
  color: var(--accent);
  text-decoration-color: var(--accent);
}

.hidden { display: none; }

@media (max-width: 760px) {
  body {
    padding: 108px 14px 40px;
  }

  .layout-shell {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

  .page {
    max-width: none;
    transition: none;
  }

  body.drawer-open .page {
    max-width: none;
    margin-right: auto;
  }

  header {
    padding-right: 0;
  }

  .wordmark {
    font-size: 12px;
    line-height: 1.55;
  }

  .input-row {
    flex-direction: column;
  }

  input[type="url"],
  #preflightButton,
  #submitSiteButton {
    width: 100%;
  }

  .submit-actions {
    flex-direction: column;
    align-items: stretch;
  }

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

  .github-chip {
    top: 12px;
    left: 12px;
    max-width: calc(100vw - 132px);
    overflow: hidden;
  }

  .github-chip span {
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .command-chip {
    top: 50px;
    left: 12px;
    max-width: calc(100vw - 24px);
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .theme-fab,
  .faq-tab {
    top: 12px;
  }

  .faq-tab {
    right: 54px;
    min-width: 48px;
    padding: 0 10px;
  }

  .faq-block {
    max-height: none;
    box-shadow: none;
  }

  .faq-drawer {
    position: static;
    width: 100%;
    visibility: visible;
    opacity: 1;
    transform: none;
    transition: none;
  }

  body:not(.drawer-open) .faq-drawer {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .indicator.spin { animation: none; }
}