/* aitools.guide — Main Stylesheet */
:root {
  --bg: #0f172a;
  --card-bg: #1e293b;
  --card-hover: #253347;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --text: #f8fafc;
  --text-muted: #94a3b8;
  --border: #334155;
  --success: #22c55e;
  --warning: #f59e0b;
  --radius: 12px;
  --shadow: 0 4px 6px -1px rgba(0,0,0,0.3);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

/* NAV */
nav {
  background: rgba(15,23,42,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 100;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
}
.nav-logo span { color: var(--accent); }

.nav-links { display: flex; gap: 24px; align-items: center; }
.nav-links a { color: var(--text-muted); font-size: 0.9rem; transition: color 0.2s; }
.nav-links a:hover { color: var(--text); }

.btn {
  background: var(--accent);
  color: white;
  padding: 8px 18px;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  transition: background 0.2s;
  border: none;
  cursor: pointer;
}
.btn:hover { background: var(--accent-hover); color: white; }
.btn-outline {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
}
.btn-outline:hover { background: var(--accent); color: white; }

/* HERO */
.hero {
  padding: 80px 24px 60px;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
}
.hero h1 span { color: var(--accent); }
.hero p {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 32px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* SEARCH */
.search-wrap {
  position: relative;
  max-width: 600px;
  margin: 0 auto 16px;
}
.search-wrap input {
  width: 100%;
  background: var(--card-bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 16px 60px 16px 20px;
  border-radius: 12px;
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s;
}
.search-wrap input:focus { border-color: var(--accent); }
.search-wrap input::placeholder { color: var(--text-muted); }
.search-btn {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--accent);
  border: none;
  color: white;
  padding: 8px 16px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.875rem;
}

/* STATS */
.stats {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
  margin-top: 16px;
}
.stat { text-align: center; }
.stat .num { font-size: 1.5rem; font-weight: 700; color: var(--accent); }
.stat .label { font-size: 0.8rem; color: var(--text-muted); }

/* SECTIONS */
.section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px;
}
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
}
.section-header h2 { font-size: 1.5rem; font-weight: 700; }
.view-all { font-size: 0.875rem; color: var(--accent); }

/* AD UNITS */
.ad-unit {
  background: var(--card-bg);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.8rem;
  text-align: center;
  padding: 8px;
}
.ad-unit-banner { height: 90px; width: 100%; margin: 24px 0; }
.ad-unit-rect { height: 250px; width: 300px; }
.ad-unit-leader { height: 90px; max-width: 728px; margin: 0 auto 32px; }

/* CATEGORY GRID */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 16px;
}
.category-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 16px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  color: var(--text);
}
.category-card:hover {
  background: var(--card-hover);
  border-color: var(--accent);
  transform: translateY(-2px);
  color: var(--text);
}
.category-card .icon { font-size: 2rem; margin-bottom: 8px; display: block; }
.category-card .name { font-weight: 600; font-size: 0.9rem; }
.category-card .count { font-size: 0.75rem; color: var(--text-muted); margin-top: 4px; }

/* TOOL CARDS */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}
.tool-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: all 0.2s;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.tool-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
.tool-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.tool-name { font-size: 1rem; font-weight: 700; }
.tool-name a { color: var(--text); }
.tool-name a:hover { color: var(--accent); }
.pricing-badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 20px;
  white-space: nowrap;
}
.pricing-free { background: rgba(34,197,94,0.15); color: #22c55e; }
.pricing-freemium { background: rgba(59,130,246,0.15); color: #3b82f6; }
.pricing-paid { background: rgba(245,158,11,0.15); color: #f59e0b; }

.tool-desc { font-size: 0.875rem; color: var(--text-muted); }
.tool-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag {
  font-size: 0.7rem;
  background: rgba(59,130,246,0.1);
  color: var(--accent);
  padding: 2px 8px;
  border-radius: 20px;
}
.tool-footer { display: flex; justify-content: space-between; align-items: center; margin-top: auto; }
.rating { font-size: 0.8rem; color: #f59e0b; }

/* BREADCRUMB */
.breadcrumb {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 24px 0;
  font-size: 0.875rem;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { margin: 0 8px; }

/* PAGE HEADER */
.page-header {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px 0;
}
.page-header h1 { font-size: clamp(1.5rem, 3vw, 2.5rem); font-weight: 800; margin-bottom: 8px; }
.page-header p { color: var(--text-muted); max-width: 600px; }

/* FAQ */
.faq-section { margin-top: 48px; }
.faq-section h2 { font-size: 1.5rem; font-weight: 700; margin-bottom: 24px; }
.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 12px;
}
.faq-item h3 { font-size: 1rem; font-weight: 600; margin-bottom: 8px; color: var(--accent); }
.faq-item p { font-size: 0.9rem; color: var(--text-muted); }

/* CTA SECTION */
.cta-section {
  background: linear-gradient(135deg, #1e3a8a 0%, #1e293b 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
  margin: 48px 0;
}
.cta-section h2 { font-size: 1.5rem; font-weight: 700; margin-bottom: 8px; }
.cta-section p { color: var(--text-muted); margin-bottom: 24px; }

/* CONTENT PROSE */
.prose { max-width: 800px; }
.prose p { color: var(--text-muted); margin-bottom: 16px; font-size: 0.95rem; }
.prose h2 { font-size: 1.3rem; font-weight: 700; margin: 32px 0 12px; }
.prose ul { padding-left: 20px; color: var(--text-muted); }
.prose li { margin-bottom: 8px; font-size: 0.95rem; }

/* SUBMIT FORM */
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 0.875rem; font-weight: 600; margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  background: var(--card-bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--accent);
}
.form-group textarea { min-height: 100px; resize: vertical; }

/* FOOTER */
footer {
  background: var(--card-bg);
  border-top: 1px solid var(--border);
  padding: 40px 24px;
  margin-top: 80px;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}
.footer-brand .logo { font-size: 1.2rem; font-weight: 700; margin-bottom: 8px; }
.footer-brand .logo span { color: var(--accent); }
.footer-brand p { font-size: 0.85rem; color: var(--text-muted); }
.footer-col h4 { font-size: 0.875rem; font-weight: 700; margin-bottom: 12px; }
.footer-col a { display: block; font-size: 0.85rem; color: var(--text-muted); margin-bottom: 8px; }
.footer-col a:hover { color: var(--text); }
.footer-bottom {
  max-width: 1200px;
  margin: 32px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 8px;
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .tools-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .hero { padding: 48px 16px 32px; }
  .stats { gap: 16px; }
}
@media (max-width: 480px) {
  .footer-inner { grid-template-columns: 1fr; }
  .category-grid { grid-template-columns: repeat(3, 1fr); }
}