/* ============================================
   SmartCAD — Main Stylesheet
   Platform: free-cad.sourceux.cc
   Primary: #f59e0b (Amber)
   ============================================ */

:root {
  --primary: #f59e0b;
  --primary-dark: #d97706;
  --primary-light: #fbbf24;
  --primary-bg: #fffbeb;
  
  --bg: #ffffff;
  --bg-alt: #f9fafb;
  --bg-card: #ffffff;
  --text: #111827;
  --text-alt: #4b5563;
  --text-muted: #9ca3af;
  --border: #e5e7eb;
  --shadow: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
  
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: "SF Mono", Monaco, "Cascadia Code", Consolas, monospace;
  
  --transition: all 0.2s ease;
}

[data-theme="dark"] {
  --bg: #0f172a;
  --bg-alt: #1e293b;
  --bg-card: #1e293b;
  --text: #f1f5f9;
  --text-alt: #cbd5e1;
  --text-muted: #64748b;
  --border: #334155;
  --primary-bg: #1e1b14;
  --shadow: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.4);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  transition: var(--transition);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ============ Header ============ */
header {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.nav {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}

.logo img { width: auto; height: 40px; max-width: 220px; }
.logo svg { height: 40px; width: auto; }

.logo span { color: var(--primary); }

.nav-links {
  display: flex;
  gap: 24px;
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: var(--text-alt);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
}

.nav-links a:hover { color: var(--primary); }

.theme-toggle {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  width: 40px;
  height: 40px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: var(--transition);
}

.theme-toggle:hover { border-color: var(--primary); }

/* ============ Hero ============ */
.hero {
  max-width: 1280px;
  margin: 0 auto;
  padding: 80px 24px 60px;
  text-align: center;
}

.hero h1 {
  font-size: 48px;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.2;
}

.hero h1 span { color: var(--primary); }

.hero p {
  font-size: 18px;
  color: var(--text-alt);
  max-width: 640px;
  margin: 0 auto 32px;
}

.badge {
  display: inline-block;
  background: var(--primary-bg);
  color: var(--primary-dark);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
  border: 1px solid var(--primary-light);
}

/* ============ Tools Grid ============ */
.tools-section {
  max-width: 1280px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

.section-title {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
}

.section-sub {
  color: var(--text-alt);
  margin-bottom: 32px;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-decoration: none;
  color: var(--text);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.tool-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.tool-icon {
  font-size: 32px;
  margin-bottom: 8px;
}

.tool-card h3 {
  font-size: 17px;
  font-weight: 600;
}

.tool-card p {
  font-size: 13px;
  color: var(--text-alt);
  line-height: 1.5;
}

.tool-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  font-size: 12px;
  color: var(--text-muted);
}

/* ============ Categories ============ */
.category-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.category-tab {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  color: var(--text-alt);
}

.category-tab.active,
.category-tab:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

/* ============ Footer ============ */
footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 40px 24px 24px;
  margin-top: auto;
}

.footer-content {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
  margin-bottom: 32px;
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 12px;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col a {
  color: var(--text-alt);
  text-decoration: none;
  font-size: 13px;
  transition: var(--transition);
}

.footer-col a:hover { color: var(--primary); }

.footer-bottom {
  max-width: 1280px;
  margin: 0 auto;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--text-muted);
}

/* ============ Utility ============ */
.btn {
  display: inline-block;
  background: var(--primary);
  color: white;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

.btn:hover { background: var(--primary-dark); }

.btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

.btn-outline:hover { border-color: var(--primary); color: var(--primary); background: transparent; }

.notice {
  background: var(--primary-bg);
  border-left: 4px solid var(--primary);
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  margin: 24px 0;
  font-size: 14px;
  color: var(--text-alt);
}

/* ============ Responsive ============ */
@media (max-width: 768px) {
  .hero h1 { font-size: 32px; }
  .hero p { font-size: 16px; }
  .nav-links { display: none; }
  .section-title { font-size: 22px; }
}

@media (max-width: 480px) {
  .hero { padding: 48px 16px 32px; }
  .tools-grid { grid-template-columns: 1fr; }
}

/* ============================================
   iCoreUX Ecosystem Footer Section
   ============================================ */

.footer-ecosystem {
  max-width: 1280px;
  margin: 0 auto;
  padding: 32px 0 24px;
  border-top: 1px solid var(--border);
}

.footer-ecosystem h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 6px;
}

.footer-ecosystem .ecosystem-tagline {
  font-size: 13px;
  color: var(--text-alt);
  font-style: italic;
  margin-bottom: 16px;
}

.footer-ecosystem .ecosystem-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 8px 24px;
  padding: 0;
  margin: 0;
}

.footer-ecosystem .ecosystem-list li {
  margin: 0;
  padding: 0;
}

.footer-ecosystem .ecosystem-list a {
  font-size: 13px;
  color: var(--text-alt);
  text-decoration: none;
  transition: var(--transition);
  display: inline-block;
  line-height: 1.6;
}

.footer-ecosystem .ecosystem-list a:hover {
  color: var(--primary);
  transform: translateX(2px);
}

.footer-ecosystem .ecosystem-list a strong {
  color: var(--text);
  font-weight: 600;
}

/* Enhanced footer bottom */
.footer-bottom {
  max-width: 1280px;
  margin: 0 auto;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 16px;
  text-align: center;
}

.footer-disclaimer {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 900px;
  margin: 0 auto;
}

.footer-copyright {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.8;
}

.footer-copyright a {
  color: var(--primary);
  text-decoration: none;
}

.footer-copyright a:hover {
  text-decoration: underline;
}

.footer-copyright strong {
  color: var(--text-alt);
}

@media (max-width: 768px) {
  .footer-ecosystem .ecosystem-list {
    grid-template-columns: 1fr;
    gap: 6px;
  }
}