/* RankProof — Visual SEO Proof Engine | Design System */
:root {
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", monospace;
  --color-bg: #fafbfc;
  --color-surface: #ffffff;
  --color-border: #e5e7eb;
  --color-muted: #6b7280;
  --color-text: #111827;
  --color-text-secondary: #4b5563;
  --color-green: #059669;
  --color-green-bg: #d1fae5;
  --color-amber: #d97706;
  --color-amber-bg: #fef3c7;
  --color-red: #dc2626;
  --color-red-bg: #fee2e2;
  --color-primary: #0f766e;
  --color-primary-hover: #0d9488;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --shadow: 0 1px 3px rgba(0,0,0,.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,.06);
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --nav-width: 220px;
  --header-h: 56px;
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  min-height: 100vh;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Layout */
.app-wrap {
  display: flex;
  min-height: 100vh;
}

/* Side navigation */
.nav-side {
  width: var(--nav-width);
  min-width: var(--nav-width);
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  padding: var(--space-md) 0;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  z-index: 100;
}

.nav-logo {
  padding: var(--space-md) var(--space-lg);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-sm);
}

.nav-logo span { color: var(--color-primary); }

.nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-list li { margin: 0; }

.nav-list a {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  border-left: 3px solid transparent;
  transition: background .15s, color .15s, border-color .15s;
}

.nav-list a:hover {
  background: var(--color-bg);
  color: var(--color-text);
  text-decoration: none;
}

.nav-list a.active {
  background: rgba(15, 118, 110, .08);
  color: var(--color-primary);
  border-left-color: var(--color-primary);
  font-weight: 500;
}

.nav-list .badge {
  margin-left: auto;
  background: var(--color-red);
  color: #fff;
  font-size: 0.7rem;
  padding: 2px 6px;
  border-radius: 10px;
  font-weight: 600;
}

/* Main content */
.main-content {
  flex: 1;
  margin-left: var(--nav-width);
  padding: var(--space-lg);
  padding-top: var(--space-xl);
}

/* Hero */
.hero-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--space-2xl);
  margin-bottom: var(--space-xl);
  border: 1px solid var(--color-border);
}

.hero-tagline {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 var(--space-md);
}

.hero-input-wrap {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  max-width: 560px;
}

.hero-input-wrap input {
  flex: 1;
  min-width: 200px;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: inherit;
}

.hero-input-wrap input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(15, 118, 110, .2);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-lg);
  font-size: 0.9rem;
  font-weight: 500;
  font-family: inherit;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background .15s, transform .1s, box-shadow .15s;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

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

.btn-primary:hover {
  background: var(--color-primary-hover);
  text-decoration: none;
  box-shadow: 0 2px 8px rgba(15, 118, 110, .3);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-bg);
  border-color: var(--color-muted);
  text-decoration: none;
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
}

.btn-ghost:hover {
  background: var(--color-bg);
  color: var(--color-text);
  text-decoration: none;
}

.btn-sm {
  padding: var(--space-xs) var(--space-md);
  font-size: 0.85rem;
}

/* Website type selector */
.type-selector {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-bottom: var(--space-lg);
}

.type-selector label {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  cursor: pointer;
  font-size: 0.9rem;
  transition: border-color .15s, background .15s;
}

.type-selector input { display: none; }

.type-selector input:checked + span {
  font-weight: 600;
}

.type-selector label:has(input:checked) {
  border-color: var(--color-primary);
  background: rgba(15, 118, 110, .06);
}

/* Cards grid */
.cards-section h2 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin: 0 0 var(--space-md);
  text-transform: uppercase;
  letter-spacing: .03em;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.card {
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
  padding: var(--space-lg);
  transition: box-shadow .15s, border-color .15s;
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin: 0 0 var(--space-sm);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.card-title [data-tooltip] {
  position: relative;
}

.card-title [data-tooltip]:hover::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-text);
  color: #fff;
  font-size: 0.75rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  z-index: 10;
  margin-bottom: 4px;
}

.card-value {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 var(--space-xs);
}

.card-meta {
  font-size: 0.8rem;
  color: var(--color-muted);
  margin: 0;
}

/* Before / After row */
.before-after {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin: var(--space-sm) 0;
  flex-wrap: wrap;
}

.before-after .val {
  font-weight: 600;
  font-size: 1rem;
}

.before-after .arrow {
  color: var(--color-muted);
  font-size: 0.9rem;
}

.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 4px;
}

.status-green { background: var(--color-green); color: var(--color-green); }
.status-amber { background: var(--color-amber); color: var(--color-amber); }
.status-red { background: var(--color-red); color: var(--color-red); }

.status-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.status-badge.green { background: var(--color-green-bg); color: #047857; }
.status-badge.amber { background: var(--color-amber-bg); color: #b45309; }
.status-badge.red { background: var(--color-red-bg); color: #b91c1c; }

/* Confidence meter */
.confidence-meter {
  margin: var(--space-sm) 0;
}

.confidence-bar {
  height: 8px;
  background: var(--color-border);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: var(--space-xs);
}

.confidence-fill {
  height: 100%;
  border-radius: 4px;
  transition: width .4s ease;
}

.confidence-fill.high { background: var(--color-green); }
.confidence-fill.medium { background: var(--color-amber); }
.confidence-fill.low { background: var(--color-red); }

.confidence-label {
  font-size: 0.8rem;
  color: var(--color-muted);
}

/* Why you won't rank */
.card-why {
  border-left: 4px solid var(--color-amber);
}

.card-why .card-title { color: var(--color-amber); }

/* Report page */
.report-hero {
  text-align: center;
  padding: var(--space-xl) 0;
}

.report-hero h1 {
  font-size: 1.5rem;
  margin: 0 0 var(--space-sm);
}

.report-actions {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--space-lg);
}

.report-url-box {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-sm) var(--space-md);
  max-width: 420px;
  margin: 0 auto var(--space-md);
}

.report-url-box input {
  flex: 1;
  border: none;
  background: none;
  font-size: 0.9rem;
  color: var(--color-muted);
}

.report-url-box input:focus { outline: none; }

/* Mini charts placeholder */
.chart-wrap {
  height: 120px;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 4px;
  padding: var(--space-md) 0;
}

.chart-bar {
  width: 20px;
  min-height: 4px;
  background: var(--color-primary);
  border-radius: 4px 4px 0 0;
  opacity: 0.85;
  transition: height .3s;
}

.chart-bar:hover { opacity: 1; }

/* Line chart placeholder */
.chart-line-wrap {
  height: 100px;
  position: relative;
  padding: var(--space-sm) 0;
}

.chart-line-wrap svg {
  width: 100%;
  height: 100%;
}

/* Pie placeholder */
.pie-wrap {
  width: 100px;
  height: 100px;
  margin: 0 auto;
  border-radius: 50%;
  background: conic-gradient(
    var(--color-green) 0deg 120deg,
    var(--color-amber) 120deg 220deg,
    var(--color-primary) 220deg 360deg
  );
}

/* Page views (hidden by default) */
.page-view {
  display: none;
}

.page-view.active {
  display: block;
}

/* Backlinks / Reports / Settings content */
.content-head {
  margin-bottom: var(--space-lg);
}

.content-head h1 {
  font-size: 1.5rem;
  margin: 0 0 var(--space-xs);
}

.content-head p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.table-wrap {
  background: var(--color-surface);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  overflow: hidden;
}

.table-wrap table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.table-wrap th,
.table-wrap td {
  padding: var(--space-sm) var(--space-md);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.table-wrap th {
  background: var(--color-bg);
  font-weight: 600;
  color: var(--color-text-secondary);
}

.table-wrap tr:last-child td { border-bottom: none; }

.settings-group {
  background: var(--color-surface);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
  max-width: 480px;
}

.settings-group h3 {
  margin: 0 0 var(--space-md);
  font-size: 1rem;
}

.settings-group label {
  display: block;
  margin-bottom: var(--space-sm);
  font-size: 0.9rem;
}

.settings-group input[type="text"],
.settings-group input[type="email"],
.settings-group select {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  margin-top: 2px;
}

.settings-group input[type="checkbox"] {
  margin-right: var(--space-sm);
}

.settings-group label:has(input[type="checkbox"]) {
  display: flex;
  align-items: center;
  cursor: pointer;
}

/* Report standalone (no nav) */
body.report-standalone .nav-side,
body.report-standalone .main-content { margin-left: 0; }

body.report-standalone .main-content {
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

/* Responsive */
@media (max-width: 900px) {
  .nav-side {
    width: 100%;
    height: auto;
    position: relative;
    border-right: none;
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-sm);
  }

  .nav-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
  }

  .nav-list a {
    padding: var(--space-sm) var(--space-md);
    border-left: none;
    border-radius: var(--radius-sm);
  }

  .nav-list a.active {
    border-left: none;
    background: rgba(15, 118, 110, .12);
  }

  .main-content {
    margin-left: 0;
    padding: var(--space-md);
  }

  .app-wrap {
    flex-direction: column;
  }

  .hero-card { padding: var(--space-lg); }

  .cards-grid {
    grid-template-columns: 1fr;
  }

  .report-url-box { max-width: 100%; }
}

@media (max-width: 480px) {
  .hero-input-wrap { flex-direction: column; }

  .hero-input-wrap input { min-width: 100%; }

  .report-actions { flex-direction: column; }

  .report-actions .btn { width: 100%; }
}