/* ── Reset & base ─────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #0f0f13;
  --bg-card:     #18181f;
  --bg-card-alt: #1e1e28;
  --border:      #2a2a38;
  --border-hi:   #3d3d55;
  --text:        #e8e8f0;
  --text-muted:  #7070a0;
  --text-dim:    #4a4a6a;
  --accent:      #7c6af7;
  --accent-hi:   #9580ff;
  --accent-glow: rgba(124,106,247,0.25);
  --success:     #22c55e;
  --success-bg:  rgba(34,197,94,0.12);
  --warning:     #f59e0b;
  --warning-bg:  rgba(245,158,11,0.12);
  --error:       #ef4444;
  --error-bg:    rgba(239,68,68,0.12);
  --info:        #38bdf8;
  --info-bg:     rgba(56,189,248,0.12);
  --radius:      12px;
  --radius-sm:   8px;
  --shadow:      0 4px 24px rgba(0,0,0,0.4);
  --shadow-lg:   0 8px 40px rgba(0,0,0,0.6);
  --font:        'Inter', -apple-system, sans-serif;
  --transition:  0.18s ease;
}

html { font-size: 16px; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }
.muted  { color: var(--text-muted); font-size: 0.9rem; }

/* ── App shell ────────────────────────────────────────────────────────── */
.app { display: flex; flex-direction: column; min-height: 100vh; }

/* ── Header ───────────────────────────────────────────────────────────── */
.header {
  border-bottom: 1px solid var(--border);
  background: rgba(15,15,19,0.85);
  backdrop-filter: blur(12px);
  position: sticky; top: 0; z-index: 50;
}
.header-inner {
  max-width: 900px; margin: 0 auto;
  padding: 16px 24px;
  display: flex; align-items: center; gap: 20px;
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--accent), var(--accent-hi));
  border-radius: 9px;
  display: grid; place-items: center;
}
.logo-icon svg { width: 20px; height: 20px; stroke: #fff; }
.logo-text { font-size: 1.2rem; font-weight: 700; letter-spacing: -0.02em; }
.header-tagline { color: var(--text-muted); font-size: 0.85rem; margin-left: auto; }

/* ── Main ─────────────────────────────────────────────────────────────── */
.main { flex: 1; max-width: 900px; margin: 0 auto; width: 100%; padding: 40px 24px 80px; }
.section { width: 100%; }

/* ── Upload card ──────────────────────────────────────────────────────── */
.upload-card {
  border: 2px dashed var(--border-hi);
  border-radius: var(--radius);
  padding: 64px 40px;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
  background: var(--bg-card);
}
.upload-card:hover,
.upload-card.drag-over {
  border-color: var(--accent);
  background: rgba(124,106,247,0.06);
  box-shadow: 0 0 0 4px var(--accent-glow);
}
.upload-icon {
  width: 72px; height: 72px; margin: 0 auto 20px;
  background: var(--bg-card-alt);
  border-radius: 50%;
  display: grid; place-items: center;
  border: 1px solid var(--border);
}
.upload-icon svg { width: 32px; height: 32px; stroke: var(--accent); }
.upload-title { font-size: 1.5rem; font-weight: 600; margin-bottom: 8px; }
.upload-sub    { color: var(--text-muted); margin-bottom: 28px; font-size: 0.9rem; }

/* ── Buttons ──────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 20px; border-radius: var(--radius-sm);
  font-family: var(--font); font-size: 0.9rem; font-weight: 500;
  border: none; cursor: pointer;
  transition: background var(--transition), opacity var(--transition), box-shadow var(--transition);
  text-decoration: none;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-hi); box-shadow: 0 0 0 3px var(--accent-glow); }
.btn-primary:disabled { opacity: 0.4; cursor: not-allowed; box-shadow: none; }
.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.btn-ghost:hover { background: var(--bg-card-alt); color: var(--text); border-color: var(--border-hi); }
.btn-large { padding: 14px 28px; font-size: 1rem; border-radius: var(--radius); }
.btn-icon  { width: 18px; height: 18px; }

/* ── Progress / spinner ───────────────────────────────────────────────── */
.progress-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 64px 40px;
  text-align: center;
}
.progress-card h2 { font-size: 1.3rem; font-weight: 600; margin: 20px 0 8px; }

@keyframes spin { to { transform: rotate(360deg); } }
.spinner {
  width: 48px; height: 48px; margin: 0 auto;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* ── Results header ───────────────────────────────────────────────────── */
.results-header {
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: 16px; margin-bottom: 28px;
  flex-wrap: wrap;
}
.results-filename { font-size: 1.2rem; font-weight: 600; word-break: break-all; }
.badge-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 8px; }
.results-actions { display: flex; gap: 10px; flex-shrink: 0; }

/* ── Badges ───────────────────────────────────────────────────────────── */
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 4px 10px; border-radius: 20px;
  font-size: 0.78rem; font-weight: 600; letter-spacing: 0.01em;
}
.badge-error   { background: var(--error-bg);   color: var(--error);   }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-info    { background: var(--info-bg);    color: var(--info);    }
.badge-success { background: var(--success-bg); color: var(--success); }
.badge .sev-icon, .sev-icon {
  width: 12px; height: 12px; display: inline-block; vertical-align: middle;
  stroke: currentColor;
}

/* ── Issue cards grid ─────────────────────────────────────────────────── */
.issues-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.issue-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: start;
  transition: border-color var(--transition), background var(--transition);
  position: relative;
}
.issue-card.selected {
  border-color: var(--accent);
  background: rgba(124,106,247,0.05);
}
.issue-card.not-fixable { opacity: 0.75; }

.issue-card-body { min-width: 0; }
.issue-card-top {
  display: flex; align-items: center; gap: 10px; margin-bottom: 8px; flex-wrap: wrap;
}
.issue-title { font-weight: 600; font-size: 0.975rem; }
.issue-description {
  color: var(--text-muted); font-size: 0.85rem; white-space: pre-line; line-height: 1.55;
}
.issue-fix-label {
  margin-top: 10px; font-size: 0.82rem;
  color: var(--accent); display: flex; align-items: center; gap: 5px;
}
.issue-fix-label svg { width: 14px; height: 14px; flex-shrink: 0; }

.fix-input-row {
  margin-top: 10px; display: flex; flex-direction: column; gap: 4px;
}
.fix-input-label {
  font-size: 0.78rem; color: var(--text-muted); font-weight: 500;
}
.fix-input-label .req-star { color: var(--error); margin-left: 1px; }
.fix-input {
  padding: 6px 10px; border: 1px solid var(--border); border-radius: 6px;
  background: var(--bg); color: var(--text); font-size: 0.88rem;
  width: 100%; max-width: 340px; outline: none; transition: border-color 0.15s;
}
.fix-input:focus { border-color: var(--accent); }

.issue-card-action { display: flex; align-items: center; padding-top: 2px; }

/* ── Toggle switch ────────────────────────────────────────────────────── */
.toggle-wrap { display: flex; align-items: center; gap: 8px; }
.toggle-label { font-size: 0.8rem; color: var(--text-muted); white-space: nowrap; }

.toggle {
  position: relative; width: 44px; height: 24px;
  display: inline-block;
}
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute; inset: 0;
  background: var(--border-hi);
  border-radius: 12px;
  cursor: pointer;
  transition: background var(--transition);
}
.toggle-slider::before {
  content: '';
  position: absolute; left: 3px; bottom: 3px;
  width: 18px; height: 18px;
  background: #fff; border-radius: 50%;
  transition: transform var(--transition);
}
.toggle input:checked + .toggle-slider { background: var(--accent); }
.toggle input:checked + .toggle-slider::before { transform: translateX(20px); }
.toggle input:disabled + .toggle-slider { opacity: 0.4; cursor: not-allowed; }

/* ── No issues ────────────────────────────────────────────────────────── */
.no-issues-msg { text-align: center; padding: 60px 20px; }
.checkmark {
  width: 64px; height: 64px; margin: 0 auto 20px;
  background: var(--success-bg);
  border-radius: 50%;
  display: grid; place-items: center;
}
.checkmark svg { width: 32px; height: 32px; stroke: var(--success); }
.no-issues-msg h3 { font-size: 1.3rem; margin-bottom: 8px; }

/* ── Download card ────────────────────────────────────────────────────── */
.download-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 48px 40px;
  text-align: center;
}
.download-card h2 { font-size: 1.5rem; margin-bottom: 24px; }
.download-icon { width: 72px; height: 72px; margin: 0 auto 24px; border-radius: 50%; display: grid; place-items: center; }
.success-icon { background: var(--success-bg); }
.success-icon svg { width: 36px; height: 36px; stroke: var(--success); }

.applied-list {
  text-align: left; max-width: 560px; margin: 0 auto 32px;
  background: var(--bg-card-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
}
.applied-item {
  display: flex; gap: 10px; align-items: flex-start;
  font-size: 0.875rem; color: var(--text-muted);
  padding: 5px 0;
  border-bottom: 1px solid var(--border);
}
.applied-item:last-child { border-bottom: none; }
.applied-item::before {
  content: '✓';
  color: var(--success); font-weight: 700; flex-shrink: 0;
}

.download-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ── Toast ────────────────────────────────────────────────────────────── */
.toast {
  position: fixed; bottom: 28px; left: 50%; transform: translateX(-50%);
  background: var(--bg-card-alt);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 12px 20px; border-radius: var(--radius-sm);
  font-size: 0.9rem;
  box-shadow: var(--shadow);
  z-index: 9999;
  transition: opacity 0.3s;
  max-width: 480px; text-align: center;
}
.toast.toast-error { border-color: var(--error); color: var(--error); }

/* ── Ad units ─────────────────────────────────────────────────────────── */
.ad-strip {
  background: var(--bg);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 12px 24px;
}
.ad-strip-inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.ad-leaderboard {
  display: block;
  width: 100%;
  min-height: 90px;      /* leaderboard minimum height */
}
.ad-inline {
  margin: 0 0 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.ad-label {
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 500;
  align-self: flex-start;
}

/* ── Info section ─────────────────────────────────────────────────────── */
.info-section {
  border-top: 1px solid var(--border);
  background: linear-gradient(180deg, var(--bg) 0%, #0c0c10 100%);
  padding: 80px 24px 100px;
  position: relative;
  overflow: hidden;
}

/* faint radial glow behind the section */
.info-section::before {
  content: '';
  position: absolute;
  top: -120px; left: 50%; transform: translateX(-50%);
  width: 700px; height: 400px;
  background: radial-gradient(ellipse, rgba(124,106,247,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.info-inner {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
}

.info-header {
  text-align: center;
  margin-bottom: 56px;
}
.info-title {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--text) 0%, var(--text-muted) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.info-sub {
  color: var(--text-muted);
  font-size: 1rem;
  max-width: 620px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ── Explainer grid ───────────────────────────────────────────────────── */
.issues-explainer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 16px;
  margin-bottom: 56px;
}

.issue-explainer-card {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.issue-explainer-card:hover {
  border-color: var(--border-hi);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.35);
}

.ie-icon {
  width: 40px; height: 40px; flex-shrink: 0;
  border-radius: 10px;
  display: grid; place-items: center;
  margin-top: 1px;
}
.ie-icon svg { width: 18px; height: 18px; }

.ie-icon-red    { background: var(--error-bg);   }
.ie-icon-red svg { stroke: var(--error); }
.ie-icon-amber  { background: var(--warning-bg); }
.ie-icon-amber svg { stroke: var(--warning); }
.ie-icon-purple { background: var(--accent-glow); }
.ie-icon-purple svg { stroke: var(--accent-hi); }
.ie-icon-blue   { background: var(--info-bg); }
.ie-icon-blue svg { stroke: var(--info); }

.ie-title {
  font-size: 0.925rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
}
.ie-body {
  font-size: 0.84rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 12px;
}
.ie-body code {
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.8rem;
  background: var(--bg-card-alt);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 5px;
  color: var(--accent-hi);
}

.ie-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 3px 9px;
  border-radius: 20px;
  text-transform: uppercase;
}
.ie-tag-red    { background: var(--error-bg);   color: var(--error);   }
.ie-tag-amber  { background: var(--warning-bg); color: var(--warning); }
.ie-tag-purple { background: var(--accent-glow); color: var(--accent-hi); }
.ie-tag-blue   { background: var(--info-bg);    color: var(--info);    }

/* ── CTA line ─────────────────────────────────────────────────────────── */
.info-cta {
  text-align: center;
  padding: 28px 0 0;
  border-top: 1px solid var(--border);
}
.info-cta p {
  color: var(--text-muted);
  font-size: 0.95rem;
}
.info-cta p::before {
  content: '↑ ';
  color: var(--accent);
  font-weight: 700;
}

/* ── Site Footer ──────────────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 24px 24px 32px;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.78rem;
}
.footer-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 6px 18px;
  margin-bottom: 10px;
}
.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--text); }

/* ── Cookie Consent Banner ────────────────────────────────────────────── */
.cookie-banner {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 900;
  padding: 14px 24px;
  background: var(--bg-card);
  border-top: 1px solid var(--border-hi);
  box-shadow: 0 -4px 32px rgba(0,0,0,0.55);
  backdrop-filter: blur(14px);
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.cookie-banner--hidden {
  transform: translateY(110%);
  opacity: 0;
  pointer-events: none;
}
.cookie-banner-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.cookie-banner-body {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  flex: 1;
  min-width: 260px;
}
.cookie-banner-icon {
  font-size: 1.4rem;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 1px;
}
.cookie-banner-text strong {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 3px;
  color: var(--text);
}
.cookie-banner-text p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin: 0;
}
.cookie-link {
  color: var(--accent);
  text-decoration: none;
}
.cookie-link:hover { text-decoration: underline; }
.cookie-banner-actions {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
  align-items: center;
}
.btn-sm {
  padding: 8px 18px;
  font-size: 0.85rem;
}

/* ── Legal Pages (ToS / Privacy) ──────────────────────────────────────── */
.legal-page {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}
.legal-page h1 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.legal-page .effective-date {
  color: var(--text-muted);
  font-size: 0.88rem;
  margin-bottom: 36px;
}
.legal-page .effective-date a {
  color: var(--accent);
  text-decoration: none;
}
.legal-page .effective-date a:hover { text-decoration: underline; }
.legal-page h2 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  margin: 36px 0 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}
.legal-page p {
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 14px;
  font-size: 0.95rem;
}
.legal-page ul {
  color: var(--text-muted);
  line-height: 1.75;
  padding-left: 22px;
  margin-bottom: 14px;
  font-size: 0.95rem;
}
.legal-page ul li { margin-bottom: 5px; }
.legal-page a { color: var(--accent); text-decoration: none; }
.legal-page a:hover { text-decoration: underline; }
.legal-page code {
  font-family: 'SF Mono', 'Fira Mono', monospace;
  font-size: 0.85em;
  background: var(--bg-card-alt);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 5px;
  color: var(--accent-hi);
}
.legal-highlight {
  background: var(--bg-card);
  border: 1px solid var(--border-hi);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  margin: 16px 0 20px;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-muted);
}
.legal-highlight strong { color: var(--text); }

/* ── Responsive ───────────────────────────────────────────────────────── */
@media (max-width: 600px) {
  .header-tagline { display: none; }
  .main { padding: 24px 16px 60px; }
  .upload-card { padding: 40px 20px; }
  .results-header { flex-direction: column; }
  .results-actions { width: 100%; }
  .results-actions .btn { flex: 1; justify-content: center; }
  .download-card { padding: 32px 20px; }
  .issue-card { grid-template-columns: 1fr; }
  .issue-card-action { justify-content: flex-end; }
  .info-section { padding: 56px 16px 72px; }
  .issues-explainer-grid { grid-template-columns: 1fr; }
  .issue-explainer-card { flex-direction: column; }
  .cookie-banner { padding: 12px 16px; }
  .cookie-banner-inner { gap: 12px; }
  .cookie-banner-actions { width: 100%; justify-content: flex-end; }
  .footer-links { gap: 6px 12px; }
  .legal-page { padding: 32px 16px 60px; }
  .legal-page h1 { font-size: 1.4rem; }
}