* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  background: linear-gradient(180deg, #f6f8ff 0%, #eef2ff 100%);
  color: #192230;
}

.navbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(20, 29, 45, 0.94);
  backdrop-filter: blur(6px);
}

.nav-inner {
  max-width: 980px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  color: #ffffff;
  text-decoration: none;
  font-size: 20px;
  font-weight: 700;
}

.nav-links {
  display: flex;
  gap: 10px;
}

.nav-link {
  color: #c6d2ec;
  text-decoration: none;
  padding: 8px 12px;
  border-radius: 8px;
}

.nav-link.active,
.nav-link:hover {
  color: #ffffff;
  background: rgba(110, 144, 255, 0.28);
}

.container {
  max-width: 980px;
  margin: 28px auto;
  padding: 24px 20px 40px;
}

.page-header {
  padding: 16px 18px;
  background: #ffffff;
  border: 1px solid #dde3f4;
  border-radius: 14px;
  box-shadow: 0 10px 30px rgba(23, 39, 77, 0.08);
}

h1 {
  margin-top: 0;
  margin-bottom: 8px;
}

.subtitle {
  margin-top: 0;
  margin-bottom: 0;
  color: #4f5d74;
}

button {
  border: none;
  border-radius: 10px;
  padding: 11px 20px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 16px;
  background: linear-gradient(135deg, #2b6ef7 0%, #6a5cf6 100%);
  color: #fff;
  box-shadow: 0 8px 18px rgba(47, 88, 220, 0.28);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
  box-shadow: none;
}

.progress-section {
  margin-top: 18px;
  padding: 16px;
  background: #ffffff;
  border: 1px solid #dde3f4;
  border-radius: 12px;
}

.status-text {
  margin: 0 0 10px;
  font-weight: 600;
}

.progress-bar-wrap {
  width: 100%;
  height: 14px;
  background: #e1e8fa;
  border-radius: 999px;
  overflow: hidden;
}

.progress-bar {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, #2b6ef7 0%, #31b7ff 100%);
  transition: width 0.25s ease;
}

.results {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.result-card {
  background: #ffffff;
  border: 1px solid #dde3f4;
  border-radius: 12px;
  padding: 14px;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.result-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(35, 56, 96, 0.08);
}

.result-card h2 {
  margin: 0 0 8px;
  font-size: 16px;
}

.result-value {
  margin: 0;
  font-size: 30px;
  font-weight: 700;
  color: #243552;
}

.metric-good {
  border-color: #2aa44f;
  background: #f1fff4;
}

.metric-bad {
  border-color: #d73a49;
  background: #fff5f6;
}

.metric-neutral {
  border-color: #b5c3e7;
  background: #ffffff;
}

.value-good {
  color: #1f8d42;
}

.value-bad {
  color: #c02735;
}

.analysis {
  margin-top: 24px;
  background: #ffffff;
  border: 1px solid #dde3f4;
  border-radius: 12px;
  padding: 16px;
}

.analysis h2,
.analysis h3 {
  margin-top: 0;
}

.analysis-help {
  margin-top: 0;
  color: #4f5d74;
}

.analysis-columns {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

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

.analysis-list li {
  margin-bottom: 8px;
}

.issue-link {
  display: block;
  text-decoration: none;
  color: #17376b;
  background: #edf3ff;
  border: 1px solid #cad7f7;
  border-radius: 8px;
  padding: 9px 10px;
}

.issue-link:hover {
  background: #e0ebff;
}

.cause-item {
  background: #f5f7ff;
  border: 1px solid #dbe3fb;
  border-radius: 8px;
  padding: 9px 10px;
  color: #30415f;
}

.empty-state {
  color: #5b6783;
}

.blog-container {
  max-width: 980px;
  margin: 28px auto;
  padding: 24px 20px 40px;
}

.blog-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 16px;
}

.blog-panel {
  background: #ffffff;
  border: 1px solid #dde3f4;
  border-radius: 12px;
  padding: 16px;
}

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

.blog-list a {
  display: block;
  text-decoration: none;
  color: #17376b;
  background: #edf3ff;
  border: 1px solid #cad7f7;
  border-radius: 8px;
  padding: 9px 10px;
  margin-bottom: 8px;
}

.blog-list a.active {
  color: #ffffff;
  background: #305fda;
  border-color: #305fda;
}

@media (max-width: 680px) {
  .nav-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

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

  .analysis-columns,
  .blog-layout {
    grid-template-columns: 1fr;
  }
}