:root {
  --font-main: "Orbitron", "Avenir Next", "Segoe UI", sans-serif;
  --bg: #f7f0f3;
  --panel: #fff8fb;
  --panel-2: #f4e7ee;
  --text: #2f2941;
  --muted: #6a5a86;
  --border: #d7bfd0;
  --accent: #6a5a86;
  --accent-soft: rgba(185, 110, 138, 0.22);
  --warn: #b96e8a;
  --danger: #ea6b7b;
  --ok: #3e6487;
  --shadow: 0 12px 40px rgba(106, 90, 134, 0.18);
  --radius: 16px;
}

body[data-theme="dark"] {
  --bg: #1a1a2b;
  --panel: #2b2740;
  --panel-2: #353054;
  --text: #f4e9ef;
  --muted: #d6a8bb;
  --border: #5b4f78;
  --accent: #ea6b7b;
  --accent-soft: rgba(185, 110, 138, 0.28);
  --warn: #d191ad;
  --danger: #ff8d99;
  --ok: #77a2ca;
  --shadow: 0 14px 44px rgba(12, 10, 20, 0.52);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 90% -10%, rgba(234, 107, 123, 0.24), transparent 35%),
    radial-gradient(circle at -10% 100%, rgba(62, 100, 135, 0.2), transparent 32%),
    var(--bg);
  transition: background 260ms ease, color 220ms ease;
  min-height: 100vh;
}

h1,
.sub,
label,
.btn,
select,
.metric .k,
.metric .v,
#readLabel,
#readText,
#readScore,
#tableTitle,
#seoTitle,
th,
td,
.diag-main,
.diag-side {
  font-family: var(--font-main);
}

.app {
  max-width: 1100px;
  margin: 0 auto;
  padding: 28px 18px 40px;
  animation: rise 460ms ease;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  object-fit: cover;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

h1 {
  margin: 0;
  font-size: clamp(1.7rem, 2vw + 1rem, 2.5rem);
  letter-spacing: 0.3px;
}

.sub {
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.96rem;
}

.controls {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.btn,
select,
textarea {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  border-radius: 12px;
  transition: all 180ms ease;
  font: inherit;
}

.btn {
  padding: 10px 14px;
  cursor: pointer;
}

.btn:hover {
  transform: translateY(-1px);
  border-color: var(--accent);
}

.btn.primary {
  background: var(--accent);
  color: #fff;
  border-color: transparent;
}

.btn:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--accent-soft);
  outline-offset: 1px;
}

.panel {
  background: linear-gradient(165deg, var(--panel), var(--panel-2));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  margin-bottom: 14px;
  animation: fade 380ms ease;
}

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

label {
  font-weight: 700;
  font-size: 0.92rem;
}

textarea {
  width: 100%;
  min-height: 180px;
  resize: vertical;
  padding: 12px;
  line-height: 1.5;
}

.options {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

select {
  padding: 10px;
  min-width: 170px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
  margin-top: 8px;
}

.metric {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 11px;
  background: var(--panel);
}

.metric .k {
  color: var(--muted);
  font-size: 0.85rem;
}

.metric .v {
  margin-top: 4px;
  font-size: 1.2rem;
  font-weight: 700;
}

.readability {
  margin-top: 10px;
  display: grid;
  gap: 8px;
}

.progress {
  height: 11px;
  border-radius: 999px;
  background: var(--accent-soft);
  overflow: hidden;
}

.progress > span {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--ok), var(--accent));
  transition: width 420ms cubic-bezier(0.2, 0.75, 0.2, 1);
}

.toolbar {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 8px;
}

.diagnostics {
  display: grid;
  gap: 10px;
}

.diag-item {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  background: var(--panel);
}

.diag-main {
  color: var(--muted);
  font-size: 0.85rem;
}

.diag-side {
  display: flex;
  align-items: center;
  gap: 10px;
}

table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
  border-radius: 12px;
  border: 1px solid var(--border);
}

th,
td {
  padding: 10px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  font-size: 0.9rem;
  vertical-align: middle;
}

th {
  background: var(--panel-2);
  font-size: 0.79rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}

tr:hover {
  background: var(--accent-soft);
}

.density-cell {
  min-width: 150px;
}

.bar {
  height: 8px;
  border-radius: 999px;
  background: var(--accent-soft);
  overflow: hidden;
  margin-top: 6px;
}

.bar > span {
  display: block;
  height: 100%;
  width: 0;
  background: var(--accent);
  transition: width 420ms ease;
}

.badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 3px 9px;
  font-size: 0.76rem;
  font-weight: 700;
  white-space: nowrap;
}

.badge.ok {
  background: rgba(62, 100, 135, 0.2);
  color: var(--ok);
}

.badge.warn {
  background: rgba(185, 110, 138, 0.2);
  color: var(--warn);
}

.badge.danger {
  background: rgba(234, 107, 123, 0.2);
  color: var(--danger);
}

.empty {
  color: var(--muted);
  text-align: center;
  padding: 16px;
  border: 1px dashed var(--border);
  border-radius: 12px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fade {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@media (max-width: 700px) {
  th:nth-child(5),
  td:nth-child(5) {
    display: none;
  }

  .btn {
    padding: 9px 12px;
  }

  .brand-logo {
    width: 44px;
    height: 44px;
  }

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