body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #f4f6f8;
  color: #222;
}

/* Header */
header {
  background: #ffffff;
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

header h1 {
  font-size: 20px;
  margin: 0;
}

.menu-icon {
  font-size: 26px;
  cursor: pointer;
}

/* Sidebar */
.sidebar {
  height: 100%;
  width: 0;
  position: fixed;
  top: 0;
  right: 0;
  background: #111;
  overflow-x: hidden;
  transition: 0.3s;
  padding-top: 60px;
}

.sidebar a {
  padding: 12px 24px;
  text-decoration: none;
  font-size: 16px;
  color: #f1f1f1;
  display: block;
}

.sidebar a:hover {
  background: #333;
}

.close-btn {
  position: absolute;
  top: 10px;
  right: 20px;
  font-size: 30px;
  cursor: pointer;
  color: white;
}

/* Main Content */
.main {
  padding: 60px 20px;
  max-width: 900px;
  margin: auto;
}

.hero {
  text-align: center;
  margin-bottom: 50px;
}

.hero h2 {
  font-size: 34px;
}

.hero p {
  font-size: 18px;
  color: #444;
}

.btn {
  display: inline-block;
  margin-top: 20px;
  padding: 10px 22px;
  background: #111827;
  color: white;
  text-decoration: none;
  border-radius: 4px;
}

.card {
  background: white;
  padding: 24px;
  margin-bottom: 25px;
  border-radius: 6px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.1);
}

.card h3 {
  margin-top: 0;
}

/* Footer */
footer {
  background: #e5e7eb;
  padding: 15px;
  font-size: 13px;
  text-align: center;
  margin-top: 80px;
}

/* ===== HOME PAGE UI POLISH ===== */

.hero {
  text-align: center;
  padding: 80px 20px;
  max-width: 900px;
  margin: auto;
}

.hero h2 {
  font-size: 36px;
  margin-bottom: 15px;
}

.hero p {
  font-size: 18px;
  color: #475569;
  margin-bottom: 30px;
}

.hero-buttons .btn {
  display: inline-block;
  padding: 12px 22px;
  margin: 8px;
  text-decoration: none;
  border-radius: 6px;
  font-weight: 600;
}

.btn.primary {
  background: #2563eb;
  color: white;
}

.btn.secondary {
  border: 2px solid #2563eb;
  color: #2563eb;
}

/* ===== CARD SECTIONS ===== */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  max-width: 1000px;
  margin: 60px auto;
  padding: 0 20px;
}

.card {
  background: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.06);
}

.card h3 {
  margin-top: 0;
  color: #0f172a;
}

/* ===== DOWNLOAD LIST ===== */

.download-list {
  list-style: none;
  padding: 0;
}

.download-list li {
  margin: 12px 0;
}

.download-list a {
  text-decoration: none;
  font-weight: 600;
  color: #2563eb;
}

/* ===== DOWNLOAD HIGHLIGHT SECTION ===== */

.download-highlight {
  background: linear-gradient(135deg, #eef2ff, #f8fafc);
  border-left: 5px solid #2563eb;
  padding: 24px;
  border-radius: 10px;
}

.download-highlight h2 {
  margin-top: 0;
  color: #1e3a8a;
}

.download-highlight p {
  color: #334155;
  line-height: 1.6;
}

.download-box {
  background: white;
  padding: 18px;
  border-radius: 8px;
  margin-top: 16px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.06);
}

.download-box a {
  font-size: 16px;
  font-weight: 600;
  color: #2563eb;
  text-decoration: none;
}

.download-box small {
  display: block;
  margin-top: 6px;
  color: #475569;
}

/* ===== VERILOG BASICS PAGE ===== */

.code-block {
  background: #0f172a;
  color: #e5e7eb;
  padding: 16px;
  border-radius: 8px;
  overflow-x: auto;
  font-family: Consolas, monospace;
  font-size: 14px;
}

.step-title {
  color: #1e40af;
  margin-top: 0;
}

.note {
  background: #fefce8;
  border-left: 4px solid #eab308;
  padding: 14px;
  border-radius: 6px;
  color: #713f12;
}

.success-box {
  background: #ecfdf5;
  border-left: 4px solid #22c55e;
  padding: 16px;
  border-radius: 6px;
  color: #065f46;
}

/* ===== START HERE PAGE ===== */

.path-box {
  background: #f1f5f9;
  border-left: 5px solid #2563eb;
  padding: 20px;
  border-radius: 8px;
}

.path-box ol {
  padding-left: 18px;
}

.path-box li {
  margin: 10px 0;
  font-weight: 500;
}

.warning-box {
  background: #fff7ed;
  border-left: 5px solid #f97316;
  padding: 18px;
  border-radius: 8px;
  color: #7c2d12;
}

/* ===== CAREER PATH PAGE ===== */

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

.career-card {
  background: #ffffff;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.06);
}

.career-card h3 {
  margin-top: 0;
  color: #1e40af;
}

.career-note {
  background: #f0fdf4;
  border-left: 5px solid #22c55e;
  padding: 18px;
  border-radius: 8px;
  color: #065f46;
}

/* ===== ABOUT PAGE ===== */

.about-highlight {
  background: #f8fafc;
  border-left: 5px solid #0f172a;
  padding: 22px;
  border-radius: 8px;
}

.about-highlight p {
  color: #334155;
  line-height: 1.7;
}

/* ===== COLLAPSIBLE SECTIONS ===== */

details {
  background: #ffffff;
  border-radius: 8px;
  margin-bottom: 16px;
  padding: 14px 18px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.08);
}

summary {
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  color: #0f172a;
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  content: " +";
  float: right;
  font-size: 18px;
}

details[open] summary::after {
  content: " −";
}