:root {
  color-scheme: dark;
  --bg-0: #060816;
  --bg-1: #0a1023;
  --bg-2: #101935;
  --surface: rgba(12, 19, 40, 0.76);
  --surface-strong: rgba(16, 25, 53, 0.92);
  --surface-soft: rgba(11, 18, 36, 0.66);
  --line: rgba(117, 161, 255, 0.16);
  --line-strong: rgba(118, 246, 255, 0.28);
  --ink: #e6eeff;
  --muted: #93a5d4;
  --accent: #76f6ff;
  --accent-2: #4a7dff;
  --accent-3: #98ffb3;
  --warn: #ffb347;
  --danger: #ff5f8f;
  --shadow: 0 26px 90px rgba(0, 0, 0, 0.45);
  --glow: 0 0 0 1px rgba(118, 246, 255, 0.16), 0 0 40px rgba(74, 125, 255, 0.12);
  --mono: "IBM Plex Mono", "SFMono-Regular", monospace;
  --sans: "Space Grotesk", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--sans);
  color: var(--ink);
  background:
    radial-gradient(circle at 14% 12%, rgba(74, 125, 255, 0.22), transparent 24%),
    radial-gradient(circle at 84% 18%, rgba(118, 246, 255, 0.12), transparent 18%),
    radial-gradient(circle at 50% 100%, rgba(152, 255, 179, 0.08), transparent 30%),
    linear-gradient(155deg, var(--bg-0) 0%, var(--bg-1) 42%, var(--bg-2) 100%);
}

.backdrop {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(118, 246, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(118, 246, 255, 0.045) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: radial-gradient(circle at center, black 42%, transparent 100%);
  opacity: 0.7;
}

.backdrop::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(transparent 0%, rgba(118, 246, 255, 0.03) 48%, transparent 100%);
  animation: sweep 9s linear infinite;
}

.shell {
  position: relative;
  z-index: 1;
  max-width: 1380px;
  margin: 0 auto;
  padding: 18px 14px 28px;
  display: grid;
  gap: 12px;
}

.site-footer {
  position: relative;
  z-index: 1;
  max-width: 1380px;
  margin: 0 auto;
  padding: 0 14px 24px;
  display: flex;
  justify-content: center;
}

.site-footer__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  color: var(--muted);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: border-color 140ms ease, color 140ms ease, box-shadow 140ms ease, transform 140ms ease;
}

.site-footer__link:hover,
.site-footer__link:focus-visible {
  color: var(--ink);
  border-color: var(--line-strong);
  box-shadow: 0 0 0 3px rgba(118, 246, 255, 0.1);
  transform: translateY(-1px);
}

.hero,
.panel {
  position: relative;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow), var(--glow);
  backdrop-filter: blur(22px);
}

.hero::before,
.panel::before,
.editor-card::before,
.diff-card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(135deg, rgba(118, 246, 255, 0.08), transparent 22%, transparent 76%, rgba(74, 125, 255, 0.08));
}

.hero {
  border-radius: 28px;
  padding: 14px 18px;
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(260px, 0.8fr);
  gap: 12px;
}

.eyebrow,
.panel__kicker {
  margin: 0 0 6px;
  text-transform: uppercase;
  letter-spacing: 0.24em;
  font-size: 0.64rem;
  color: var(--accent);
}

h1,
h2,
h3 {
  position: relative;
  margin: 0;
  font-weight: 700;
}

h1 {
  font-size: clamp(1.55rem, 2.8vw, 2.7rem);
  line-height: 0.98;
  max-width: 16ch;
  text-shadow: 0 0 24px rgba(118, 246, 255, 0.1);
}

h2 {
  font-size: clamp(1rem, 1.6vw, 1.35rem);
}

h3 {
  font-size: 0.94rem;
}

.lede {
  max-width: 60ch;
  margin: 6px 0 0;
  color: var(--muted);
  line-height: 1.35;
  font-size: 0.92rem;
}

.hero__status {
  display: grid;
  gap: 6px;
  align-content: start;
  justify-items: end;
}

.status-pill,
.diff-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: linear-gradient(180deg, rgba(118, 246, 255, 0.14), rgba(74, 125, 255, 0.12));
  color: var(--ink);
  font-weight: 700;
  box-shadow: inset 0 0 20px rgba(118, 246, 255, 0.08);
}

.mini-meta,
.editor-card__meta {
  color: var(--muted);
  font-size: 0.82rem;
}

.panel {
  border-radius: 22px;
  padding: 14px;
}

.panel__header,
.editor-card__header,
.diff-card__header {
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.panel__tools,
.panel__tools--wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.field--preset {
  min-width: 180px;
}

.field--preset span {
  font-size: 0.68rem;
}

.field--preset select {
  min-height: 38px;
}

.connect-grid {
  display: grid;
  grid-template-columns: minmax(220px, 270px) minmax(260px, 1fr) minmax(220px, 0.85fr);
  gap: 10px;
  margin-top: 12px;
}

.field {
  display: grid;
  gap: 6px;
  align-content: start;
}

.field span {
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.field select,
.field input,
.editor {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(6, 11, 24, 0.92);
  color: var(--ink);
  font: inherit;
  outline: none;
  transition: border-color 140ms ease, box-shadow 140ms ease, transform 140ms ease;
}

.field select:focus,
.field input:focus,
.editor:focus {
  border-color: var(--line-strong);
  box-shadow: 0 0 0 3px rgba(118, 246, 255, 0.12);
}

.field select,
.field input {
  min-height: 40px;
  padding: 0 12px;
}

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.84rem;
  cursor: pointer;
  user-select: none;
}

.toggle__input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  pointer-events: none;
}

.toggle__slider {
  position: relative;
  width: 46px;
  height: 26px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(6, 11, 24, 0.92);
  box-shadow: inset 0 0 0 1px rgba(118, 246, 255, 0.04);
  transition: border-color 140ms ease, background 140ms ease, box-shadow 140ms ease;
}

.toggle__slider::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: linear-gradient(180deg, #dfe8ff, #a8b7df);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.35);
  transition: transform 140ms ease, background 140ms ease;
}

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

.toggle__input:checked + .toggle__slider {
  border-color: var(--line-strong);
  background: linear-gradient(135deg, rgba(118, 246, 255, 0.22), rgba(74, 125, 255, 0.26));
  box-shadow: inset 0 0 18px rgba(118, 246, 255, 0.12);
}

.toggle__input:checked + .toggle__slider::after {
  transform: translateX(20px);
  background: linear-gradient(180deg, #f6ffff, #c7fff2);
}

.toggle__input:focus-visible + .toggle__slider {
  box-shadow:
    inset 0 0 18px rgba(118, 246, 255, 0.12),
    0 0 0 3px rgba(118, 246, 255, 0.12);
}

.hint-block {
  border: 1px dashed var(--line);
  border-radius: 14px;
  padding: 12px;
  background: linear-gradient(180deg, rgba(118, 246, 255, 0.06), rgba(74, 125, 255, 0.04));
  color: var(--muted);
  line-height: 1.35;
  font-size: 0.84rem;
}

.workspace {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 12px;
}

.diff-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin-top: 12px;
}

.editor-card,
.diff-card {
  position: relative;
  background: var(--surface-strong);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 12px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

.editor {
  margin-top: 10px;
  min-height: 320px;
  padding: 12px;
  resize: vertical;
  font-family: var(--mono);
  font-size: 0.84rem;
  line-height: 1.42;
  background:
    linear-gradient(180deg, rgba(13, 18, 36, 0.98), rgba(8, 13, 28, 0.98));
}

.diff-output,
.log {
  margin: 10px 0 0;
  padding: 12px;
  border-radius: 14px;
  border: 1px solid rgba(118, 246, 255, 0.12);
  background:
    radial-gradient(circle at top right, rgba(74, 125, 255, 0.15), transparent 24%),
    linear-gradient(180deg, #09111f, #060b16);
  color: #dfe8ff;
  overflow: auto;
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.42;
  word-break: break-word;
}

.diff-output {
  display: grid;
  gap: 10px;
  align-content: start;
  min-height: 180px;
  white-space: normal;
}

.diff-empty {
  color: var(--accent-3);
}

.diff-entry {
  border: 1px solid rgba(118, 246, 255, 0.12);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.02);
  padding: 10px;
}

.diff-entry__head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.diff-kind {
  display: inline-flex;
  align-items: center;
  min-height: 22px;
  padding: 0 8px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.diff-kind--added {
  background: rgba(152, 255, 179, 0.14);
  border: 1px solid rgba(152, 255, 179, 0.2);
  color: #baffcb;
}

.diff-kind--removed {
  background: rgba(255, 95, 143, 0.14);
  border: 1px solid rgba(255, 95, 143, 0.2);
  color: #ffc0d0;
}

.diff-kind--changed {
  background: rgba(118, 246, 255, 0.14);
  border: 1px solid rgba(118, 246, 255, 0.2);
  color: #bffcff;
}

.diff-path {
  color: #dfe8ff;
  font-size: 0.82rem;
}

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

.diff-side {
  min-width: 0;
}

.diff-label {
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.diff-value {
  margin: 0;
  padding: 8px 9px;
  border-radius: 10px;
  border: 1px solid rgba(118, 246, 255, 0.1);
  background: rgba(7, 12, 24, 0.72);
  color: #dfe8ff;
  font-family: var(--mono);
  font-size: 0.79rem;
  line-height: 1.35;
  white-space: pre-wrap;
  word-break: break-word;
}

.diff-value--empty {
  display: block;
  color: var(--muted);
}

.log {
  height: calc(10 * 1.42em + 24px);
  min-height: 0;
  max-height: calc(10 * 1.42em + 24px);
  overflow-y: auto;
  white-space: pre-wrap;
}

.button {
  appearance: none;
  position: relative;
  border: 1px solid transparent;
  border-radius: 999px;
  min-height: 38px;
  padding: 0 13px;
  font: inherit;
  font-weight: 700;
  font-size: 0.88rem;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: transform 140ms ease, opacity 140ms ease, border-color 140ms ease, box-shadow 140ms ease, background 140ms ease;
}

.button:hover:not(:disabled) {
  transform: translateY(-1px);
}

.button:disabled {
  opacity: 0.44;
  cursor: not-allowed;
}

.button--primary {
  background: linear-gradient(135deg, rgba(118, 246, 255, 0.22), rgba(74, 125, 255, 0.32));
  border-color: rgba(118, 246, 255, 0.24);
  color: var(--ink);
  box-shadow: inset 0 0 22px rgba(118, 246, 255, 0.08), 0 0 22px rgba(74, 125, 255, 0.12);
}

.button--ghost {
  background: rgba(255, 255, 255, 0.03);
  border-color: var(--line);
  color: var(--ink);
}

.button--danger {
  background: linear-gradient(135deg, rgba(255, 95, 143, 0.22), rgba(255, 80, 120, 0.34));
  border-color: rgba(255, 95, 143, 0.26);
  color: #ffe7ef;
  box-shadow: inset 0 0 22px rgba(255, 95, 143, 0.08);
}

@keyframes sweep {
  0% {
    transform: translateY(-20%);
    opacity: 0;
  }
  20%,
  80% {
    opacity: 1;
  }
  100% {
    transform: translateY(20%);
    opacity: 0;
  }
}

@media (max-width: 1120px) {
  .hero,
  .connect-grid,
  .workspace,
  .diff-grid {
    grid-template-columns: 1fr;
  }

  .hero__status {
    justify-items: start;
  }
}

@media (max-width: 720px) {
  .shell {
    padding: 12px 10px 24px;
  }

  .site-footer {
    padding: 0 10px 18px;
  }

  .hero,
  .panel {
    padding: 12px;
    border-radius: 16px;
  }

  .panel__header,
  .editor-card__header,
  .diff-card__header {
    flex-direction: column;
    align-items: stretch;
  }

  .panel__tools,
  .panel__tools--wrap {
    justify-content: stretch;
  }

  .panel__tools .button,
  .panel__tools--wrap .button,
  .field--preset {
    width: 100%;
  }

  .editor {
    min-height: 240px;
  }

  .diff-output {
    min-height: 140px;
  }

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