/* Jingzhaoyuan Tools — base styles */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --text: #1e293b;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-hover: 0 10px 25px rgba(0,0,0,0.08), 0 4px 6px rgba(0,0,0,0.04);
  --radius: 12px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

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

/* Header */
.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky; top: 0; z-index: 100;
}
.site-header .container {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 16px; padding-bottom: 16px;
}
.logo { display: flex; align-items: center; gap: 10px; color: var(--text); }
.logo:hover { text-decoration: none; }
.logo-icon { font-size: 28px; }
.logo-text { font-size: 18px; }
.tag { color: var(--primary); font-size: 14px; margin-left: 4px; }
.main-nav { display: flex; gap: 24px; }
.main-nav a { color: var(--text); font-size: 15px; font-weight: 500; }

/* Hero */
.hero { padding: 64px 0 32px; text-align: center; background: var(--bg-alt); }
.hero h1 { font-size: 40px; font-weight: 700; margin-bottom: 12px; letter-spacing: -0.02em; }
.subtitle { font-size: 18px; color: var(--text-muted); max-width: 640px; margin: 0 auto; }
.lang-note { margin-top: 12px; font-size: 14px; color: var(--text-muted); }

/* Tools grid */
.tools-grid-section { padding: 56px 0; }
.tools-grid-section h2 { font-size: 28px; margin-bottom: 24px; }
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}
.tool-card {
  display: block; padding: 24px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  transition: all 0.2s;
}
.tool-card:hover {
  text-decoration: none;
  border-color: var(--primary);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.tool-icon { font-size: 32px; margin-bottom: 12px; }
.tool-card h3 { font-size: 18px; margin-bottom: 8px; }
.tool-card p { font-size: 14px; color: var(--text-muted); }

/* Features */
.features { padding: 56px 0; background: var(--bg-alt); }
.features h2 { font-size: 28px; margin-bottom: 24px; text-align: center; }
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.feature { padding: 24px; background: var(--bg); border-radius: var(--radius); }
.feature h3 { font-size: 18px; margin-bottom: 8px; }
.feature p { color: var(--text-muted); font-size: 15px; }

/* Footer */
.site-footer { padding: 32px 0; border-top: 1px solid var(--border); text-align: center; }
.footer-links { display: flex; justify-content: center; gap: 24px; margin-bottom: 12px; flex-wrap: wrap; }
.copyright, .contact { color: var(--text-muted); font-size: 14px; margin-top: 6px; }

/* Legal pages */
.legal-page { padding: 48px 0; }
.legal-page h1 { font-size: 32px; margin-bottom: 16px; }
.legal-page h2 { font-size: 22px; margin-top: 28px; margin-bottom: 12px; }
.legal-page p, .legal-page li { font-size: 16px; color: var(--text); margin-bottom: 12px; }
.legal-page ul, .legal-page ol { margin-left: 24px; margin-bottom: 16px; }
.legal-meta { color: var(--text-muted); font-size: 14px; margin-bottom: 24px; }

/* Tool page layout */
.tool-page { padding: 32px 0 56px; }
.tool-page h1 { font-size: 28px; margin-bottom: 8px; }
.tool-page .lead { color: var(--text-muted); margin-bottom: 24px; }
.tool-panel {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}
.tool-panel label { display: block; font-weight: 600; margin-bottom: 8px; font-size: 14px; }
.tool-panel textarea, .tool-panel input[type="text"] {
  width: 100%; padding: 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 14px;
  resize: vertical;
}
.tool-panel textarea { min-height: 160px; }
.tool-row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; margin-top: 12px; }
.tool-row button, .tool-btn {
  padding: 8px 16px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  font-size: 14px;
}
.tool-row button:hover, .tool-btn:hover { background: var(--primary-dark); }
.tool-row button.secondary { background: var(--bg-alt); color: var(--text); border: 1px solid var(--border); }
.tool-row select, .tool-row input { padding: 8px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px; }
.tool-output {
  background: #0f172a;
  color: #e2e8f0;
  padding: 16px;
  border-radius: 8px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
  white-space: pre-wrap;
  word-break: break-all;
  min-height: 60px;
  margin-top: 8px;
}
.tool-output:empty::before { content: "Output will appear here…"; color: #64748b; font-style: italic; }

@media (max-width: 640px) {
  .hero h1 { font-size: 28px; }
  .main-nav { gap: 12px; font-size: 14px; }
  .site-header .container { padding-top: 12px; padding-bottom: 12px; }
}