:root {
  color-scheme: dark;
  --page: #07100f;
  --panel: #101817;
  --panel-2: #14211f;
  --line: rgba(190, 211, 205, 0.18);
  --ink: #f2fbf7;
  --muted: #9eb3ad;
  --faint: #71847f;
  --teal: #19b8a2;
  --teal-2: #0d7e78;
  --amber: #f0b252;
  --coral: #ef6b63;
  --blue: #79a8ff;
  --green: #82dc8b;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.42);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  background:
    linear-gradient(180deg, rgba(18, 30, 28, 0.82), rgba(7, 16, 15, 0.98)),
    var(--page);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input,
textarea {
  font: inherit;
}

.app-shell {
  min-height: 100vh;
  padding: 22px 24px 56px 112px;
}

.nav-rail {
  position: fixed;
  inset: 18px auto 18px 18px;
  z-index: 10;
  width: 76px;
  display: grid;
  gap: 8px;
  justify-items: center;
  align-content: start;
  padding: 9px 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(10, 18, 17, 0.88);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.nav-logo,
.nav-icon {
  width: 58px;
  min-height: 46px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  color: var(--muted);
  text-decoration: none;
  font-weight: 900;
}

.nav-logo {
  min-height: 34px;
  background: var(--teal-2);
  color: #effffc;
  font-size: 0.72rem;
}

.nav-icon {
  gap: 2px;
  padding: 6px 4px;
  border: 1px solid transparent;
}

.nav-icon.is-active,
.nav-icon:hover {
  border-color: rgba(25, 184, 162, 0.42);
  background: rgba(25, 184, 162, 0.12);
  color: var(--teal);
}

.nav-icon span {
  font-size: 0.86rem;
  line-height: 1;
}

.nav-icon b {
  color: currentColor;
  font-size: 0.62rem;
  line-height: 1;
}

.hero {
  position: relative;
  min-height: 380px;
  overflow: hidden;
  display: grid;
  align-items: end;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #0c1514;
  box-shadow: var(--shadow);
}

.hero__media {
  position: absolute;
  inset: 0;
  opacity: 0.72;
}

.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(7, 16, 15, 0.97) 0%, rgba(7, 16, 15, 0.82) 42%, rgba(7, 16, 15, 0.2) 100%),
    linear-gradient(0deg, rgba(7, 16, 15, 0.9), transparent 58%);
}

.hero__copy {
  position: relative;
  z-index: 1;
  max-width: 760px;
  padding: 46px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--amber);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 720px;
  margin-bottom: 16px;
  font-size: clamp(2.35rem, 5vw, 4.7rem);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font-size: 1.05rem;
  letter-spacing: 0;
}

.hero__copy p:not(.eyebrow) {
  max-width: 610px;
  color: #c4d5cf;
  line-height: 1.55;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.checker-grid,
.dashboard,
.tag-grid {
  display: grid;
  gap: 14px;
  margin-top: 14px;
}

.checker-grid {
  grid-template-columns: 1.3fr 0.7fr;
}

.dashboard {
  grid-template-columns: minmax(0, 1.25fr) minmax(360px, 0.75fr);
}

.tag-grid {
  grid-template-columns: minmax(360px, 0.8fr) minmax(0, 1.2fr);
}

.panel {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.014)),
    var(--panel);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.22);
}

.panel__head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 16px;
}

.field {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 850;
}

.field + .field {
  margin-top: 12px;
}

input[type="url"],
textarea {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(7, 14, 13, 0.82);
  color: var(--ink);
  padding: 0 12px;
}

textarea {
  min-height: 272px;
  padding: 12px;
  resize: vertical;
  line-height: 1.45;
  font-family: "Cascadia Code", Consolas, "Liberation Mono", monospace;
  font-size: 0.84rem;
}

.input-actions,
.output-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 12px 0;
}

.button,
.segment {
  border: 0;
  cursor: pointer;
}

.button {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
  border-radius: 8px;
  color: var(--ink);
  font-weight: 850;
}

.button--primary {
  background: linear-gradient(180deg, #1bbba8, #0d7e78);
  box-shadow: 0 12px 28px rgba(25, 184, 162, 0.2);
}

.button--secondary {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.07);
  color: #d8e8e3;
}

.status-pill {
  min-width: 62px;
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(130, 220, 139, 0.12);
  color: var(--green);
  font-size: 0.78rem;
  font-weight: 900;
  text-align: center;
}

.score-layout {
  display: grid;
  grid-template-columns: 154px 1fr;
  gap: 18px;
  align-items: center;
}

.ring {
  width: 146px;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background:
    radial-gradient(circle at center, var(--panel) 0 53%, transparent 54%),
    conic-gradient(var(--teal) 0 82%, rgba(135, 159, 151, 0.18) 82% 100%);
}

.ring span {
  font-size: 2rem;
  font-weight: 950;
}

.ring small {
  display: block;
  margin-top: -36px;
  color: var(--muted);
  font-weight: 850;
}

.metric-list {
  display: grid;
  gap: 10px;
}

.metric-row,
.summary-box,
.finding-item,
.tag-row {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(7, 14, 13, 0.48);
}

.metric-row {
  min-height: 44px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 8px 11px;
}

.metric-row span {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
}

.metric-row strong {
  font-weight: 900;
  text-align: right;
}

.summary-box {
  margin-top: 14px;
  padding: 13px;
  color: #c8d9d3;
  line-height: 1.5;
}

.segmented {
  display: grid;
  grid-template-columns: repeat(4, minmax(74px, 1fr));
  gap: 6px;
  padding: 5px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: rgba(7, 14, 13, 0.52);
}

.segment {
  min-height: 36px;
  border-radius: 7px;
  background: transparent;
  color: var(--muted);
  font-weight: 900;
}

.segment.is-active {
  background: rgba(25, 184, 162, 0.15);
  color: #effffc;
  box-shadow: inset 0 0 0 1px rgba(25, 184, 162, 0.4);
}

.finding-list,
.tag-table,
.preview-stack {
  display: grid;
  gap: 10px;
}

.finding-item {
  display: grid;
  grid-template-columns: 86px 1fr;
  gap: 12px;
  padding: 12px;
}

.finding-badge {
  align-self: start;
  padding: 5px 8px;
  border-radius: 999px;
  color: #06100f;
  background: var(--green);
  font-size: 0.72rem;
  font-weight: 950;
  text-align: center;
  text-transform: uppercase;
}

.finding-item[data-severity="critical"] .finding-badge {
  background: var(--coral);
}

.finding-item[data-severity="warning"] .finding-badge {
  background: var(--amber);
}

.finding-item h3 {
  margin-bottom: 5px;
  font-size: 0.98rem;
}

.finding-item p {
  margin-bottom: 0;
  color: #b7cbc4;
  line-height: 1.45;
}

.serp-card {
  padding: 16px;
  border: 1px solid rgba(121, 168, 255, 0.24);
  border-radius: 9px;
  background: #f8fbff;
  color: #202124;
}

.serp-url {
  margin-bottom: 7px;
  color: #4d5156;
  font-size: 0.82rem;
}

.serp-card h3 {
  margin-bottom: 7px;
  color: #1a0dab;
  font-size: 1.18rem;
  line-height: 1.25;
}

.serp-card p:last-child {
  margin-bottom: 0;
  color: #4d5156;
  line-height: 1.4;
}

.social-card {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 10px;
  background: #172320;
}

.social-image {
  min-height: 180px;
  display: grid;
  place-items: center;
  background:
    linear-gradient(135deg, rgba(25, 184, 162, 0.22), rgba(240, 178, 82, 0.12)),
    #0c1514;
  color: var(--muted);
  font-weight: 900;
  text-align: center;
  overflow: hidden;
}

.social-image img {
  width: 100%;
  height: 100%;
  max-height: 240px;
  object-fit: cover;
}

.social-copy {
  padding: 14px;
}

.social-copy p {
  color: #a8bab4;
  line-height: 1.42;
}

.social-copy p:first-child {
  margin-bottom: 8px;
  color: var(--amber);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.social-copy h3 {
  margin-bottom: 7px;
  font-size: 1.04rem;
}

.tag-row {
  display: grid;
  grid-template-columns: minmax(130px, 0.35fr) minmax(0, 0.65fr);
  gap: 12px;
  padding: 11px;
}

.tag-row span {
  color: var(--amber);
  font-size: 0.78rem;
  font-weight: 900;
  overflow-wrap: anywhere;
}

.tag-row strong {
  min-width: 0;
  color: #dcece7;
  font-weight: 760;
  overflow-wrap: anywhere;
}

pre {
  margin: 0;
  max-height: 486px;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: #07100f;
  color: #d8eee7;
  padding: 16px;
  font-size: 0.84rem;
  line-height: 1.52;
}

code {
  font-family: "Cascadia Code", Consolas, "Liberation Mono", monospace;
}

.floating-actions {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 80;
  display: grid;
  gap: 10px;
}

.float-button {
  width: 48px;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border: 1px solid rgba(25, 184, 162, 0.42);
  border-radius: 999px;
  background: rgba(10, 18, 17, 0.9);
  color: #effffc;
  box-shadow: var(--shadow);
  text-decoration: none;
  font-size: 1.05rem;
  font-weight: 950;
  backdrop-filter: blur(16px);
}

.float-button:hover,
.float-button:focus-visible {
  background: rgba(25, 184, 162, 0.22);
  outline: 2px solid rgba(25, 184, 162, 0.34);
  outline-offset: 3px;
}

.back-to-top {
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 160ms ease, transform 160ms ease;
}

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.tour-overlay[hidden] {
  display: none;
}

.tour-overlay {
  position: fixed;
  inset: 0;
  z-index: 120;
  pointer-events: none;
}

.tour-shade {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.46);
  backdrop-filter: blur(1px);
}

.tour-card {
  position: fixed;
  right: 24px;
  bottom: 88px;
  z-index: 122;
  width: min(420px, calc(100vw - 32px));
  padding: 18px;
  border: 1px solid rgba(25, 184, 162, 0.42);
  border-radius: 12px;
  background: rgba(16, 24, 23, 0.98);
  box-shadow: var(--shadow);
  pointer-events: auto;
}

.tour-progress {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
  color: var(--amber);
  font-size: 0.74rem;
  font-weight: 950;
  text-transform: uppercase;
}

.tour-close {
  width: 32px;
  aspect-ratio: 1;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.07);
  color: var(--ink);
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: 900;
}

.tour-card h2 {
  margin-bottom: 8px;
  font-size: 1.24rem;
}

.tour-card p {
  margin-bottom: 0;
  color: #c7d8d2;
  line-height: 1.52;
}

.tour-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 14px;
}

.tour-target {
  position: relative;
  z-index: 70;
  box-shadow:
    0 0 0 3px rgba(25, 184, 162, 0.78),
    0 20px 70px rgba(0, 0, 0, 0.52);
}

@media (max-width: 1120px) {
  .checker-grid,
  .dashboard,
  .tag-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 780px) {
  .app-shell {
    padding: 14px 12px 40px;
  }

  .nav-rail {
    position: sticky;
    top: 8px;
    inset: auto;
    width: 100%;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    justify-content: center;
    margin-bottom: 12px;
  }

  .nav-logo,
  .nav-icon {
    width: min(58px, 100%);
  }

  .hero {
    min-height: 440px;
  }

  .hero__copy {
    max-width: 100%;
    padding: 32px 22px;
  }

  h1 {
    font-size: clamp(2rem, 10vw, 2.35rem);
    line-height: 1.03;
    overflow-wrap: anywhere;
  }

  .hero__copy p:not(.eyebrow) {
    max-width: 100%;
  }

  .score-layout,
  .finding-item,
  .tag-row,
  .segmented {
    grid-template-columns: 1fr;
  }

  .score-layout {
    justify-items: center;
  }

  .metric-list {
    width: 100%;
  }

  .panel__head {
    flex-direction: column;
  }

  .input-actions .button,
  .output-actions .button {
    min-width: 0;
    flex: 1 1 142px;
  }

  input[type="url"],
  textarea,
  pre {
    min-width: 0;
  }

  .floating-actions {
    right: 12px;
    bottom: 12px;
  }

  .float-button {
    width: 44px;
  }

  .tour-card {
    left: 12px;
    right: 12px;
    bottom: 68px;
    width: auto;
  }

  .tour-actions .button {
    flex: 1;
  }
}