* {
  box-sizing: border-box;
}

:root {
  --bg: #f7f8fb;
  --text: #101828;
  --muted: #667085;
  --card: #ffffff;
  --line: #e5e7eb;
  --primary: #111827;
  --primary-hover: #000000;
  --soft: #f2f4f7;
  --success: #067647;
  --error: #b42318;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top, #ffffff 0, var(--bg) 45%);
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(16px);
  background: rgba(255, 255, 255, 0.78);
  border-bottom: 1px solid var(--line);
}

.nav {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-weight: 850;
  letter-spacing: -0.04em;
  font-size: 1.35rem;
}

.nav-links {
  display: flex;
  gap: 20px;
  color: var(--muted);
  font-size: 0.95rem;
}

.container {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  padding: 72px 0 42px;
  text-align: center;
}

.badge {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 14px;
  background: rgba(255, 255, 255, 0.7);
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 18px;
}

h1 {
  font-size: clamp(2.3rem, 6vw, 4.6rem);
  line-height: 0.96;
  letter-spacing: -0.07em;
  margin: 0 auto 20px;
  max-width: 920px;
}

.hero p {
  color: var(--muted);
  font-size: 1.15rem;
  line-height: 1.65;
  max-width: 740px;
  margin: 0 auto;
}

.tool-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 28px;
  padding: 28px;
  box-shadow: 0 24px 80px rgba(16, 24, 40, 0.08);
  margin: 32px auto 52px;
  max-width: 780px;
}

.dropzone {
  border: 2px dashed #cbd5e1;
  border-radius: 24px;
  padding: 42px 24px;
  text-align: center;
  background: #fbfcff;
  transition: 0.2s ease;
  cursor: pointer;
}

.dropzone.dragover {
  border-color: var(--primary);
  background: #f8fafc;
}

.dropzone strong {
  display: block;
  font-size: 1.2rem;
  margin-bottom: 8px;
}

.dropzone span {
  color: var(--muted);
}

.file-meta {
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: 16px;
  background: var(--soft);
  color: var(--muted);
  display: none;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.95rem;
}

.actions {
  display: flex;
  gap: 12px;
  margin-top: 22px;
  flex-wrap: wrap;
}

button, .button {
  appearance: none;
  border: 0;
  border-radius: 14px;
  padding: 14px 18px;
  background: var(--primary);
  color: white;
  font-weight: 700;
  cursor: pointer;
  transition: 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

button:hover, .button:hover {
  background: var(--primary-hover);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.secondary {
  background: var(--soft);
  color: var(--text);
}

.secondary:hover {
  background: #e5e7eb;
}

.status {
  display: none;
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: 16px;
  background: var(--soft);
  color: var(--muted);
}

.status.error {
  background: #fef3f2;
  color: var(--error);
}

.status.success {
  background: #ecfdf3;
  color: var(--success);
}

.result-box {
  display: none;
  margin-top: 20px;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 18px;
}

.stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 14px 0 18px;
}

.stat {
  background: var(--soft);
  border-radius: 16px;
  padding: 14px;
}

.stat small {
  display: block;
  color: var(--muted);
  margin-bottom: 6px;
}

.grid-tools {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin: 48px 0;
}

.mini-card, .content-card {
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 22px;
  background: var(--card);
}

.mini-card p, .content-card p, .content-card li {
  color: var(--muted);
  line-height: 1.7;
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  max-width: 900px;
  margin: 48px auto;
}

.ad-placeholder {
  display: none;
  min-height: 90px;
  border-radius: 18px;
  border: 1px dashed #d0d5dd;
  color: var(--muted);
  align-items: center;
  justify-content: center;
  margin: 28px auto;
  max-width: 900px;
}

.site-footer {
  margin-top: 80px;
  padding: 32px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  text-align: center;
}

@media (max-width: 820px) {
  .nav {
    height: auto;
    padding: 18px 0;
    align-items: flex-start;
    gap: 14px;
    flex-direction: column;
  }

  .nav-links {
    flex-wrap: wrap;
    gap: 12px;
  }

  .hero {
    padding-top: 42px;
  }

  .tool-card {
    padding: 18px;
    border-radius: 22px;
  }

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

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

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 18px;
  margin-top: 14px;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
}

.footer-links a:hover {
  color: var(--text);
}

.legal-hero {
  padding-bottom: 12px;
}

.legal-content .content-card h2 {
  margin-top: 22px;
}

.legal-content .content-card h2:first-child {
  margin-top: 0;
}