:root {
  --primary-color: #4f46e5;
  --primary-hover: #4338ca;
  --text-main: #1f2937;
  --text-muted: #6b7280;
  --bg-body: #f9fafb;
  --bg-card: #ffffff;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --radius-md: 0.5rem;
  --radius-full: 9999px;
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-body);
  color: var(--text-main);
  margin: 0;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Header & Nav */
header {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: var(--shadow-sm);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

nav a {
  color: var(--text-main);
  margin-left: 2rem;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

nav a:first-child {
  margin-left: 0;
}

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

/* Main Layout */
main {
  max-width: 1024px;
  margin: 0 auto;
  padding: 2rem;
}

main h1 {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  color: #111;
}

main h2 {
  font-size: 1.75rem;
  margin-top: 2rem;
  margin-bottom: 1rem;
  color: #333;
}

main p {
  margin-bottom: 1rem;
}

/* Hero Section */
.hero {
  text-align: center;
  padding: 4rem 1rem;
}

.hero h1 {
  font-size: 3rem;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: #111;
  background: linear-gradient(135deg, var(--primary-color), #818cf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 2rem;
}

/* Buttons */
.btn-primary {
  background-color: var(--primary-color);
  color: white;
  border: none;
  padding: 0.75rem 2rem;
  font-size: 1.1rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all 0.2s ease-in-out;
  box-shadow: var(--shadow-md);
  font-weight: 600;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

/* Features Section */
.features {
  padding: 4rem 0;
}

.features h2 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 3rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--bg-card);
  padding: 2rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s, box-shadow 0.2s;
  border: 1px solid rgba(0,0,0,0.05);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.feature-card h3 {
  color: var(--primary-color);
  margin-top: 0;
  font-size: 1.5rem;
}

.feature-card p {
  color: var(--text-muted);
  margin-bottom: 0;
}

/* Forms */
form {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

label {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-weight: 500;
  color: var(--text-main);
}

input, textarea {
  padding: 0.75rem;
  border: 1px solid #d1d5db;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

input:focus, textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

textarea {
  min-height: 150px;
  resize: vertical;
}

button {
  cursor: pointer;
}

/* Footer */
footer {
  background: #fff;
  border-top: 1px solid #e5e7eb;
  padding: 2rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Utilities */
.pagination {
  margin-top: 2rem;
  display: flex;
  justify-content: center;
  gap: 1rem;
}
.pagination a, .pagination span {
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  background: white;
  border: 1px solid #e5e7eb;
  transition: all 0.2s;
}
.pagination a:hover {
  border-color: var(--primary-color);
  background: #f0fdfa; /* subtle tint */
}
.pagination span {
  color: var(--text-muted);
  background: #f3f4f6;
}

/* Blog Styles */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.blog-card {
  background: var(--bg-card);
  padding: 2rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s, box-shadow 0.2s;
  border: 1px solid rgba(0,0,0,0.05);
  display: flex;
  flex-direction: column;
}

.blog-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.blog-card h2 {
  font-size: 1.5rem;
  margin-top: 0;
  margin-bottom: 0.5rem;
  color: var(--primary-color);
}

.blog-card small {
  display: block;
  margin-bottom: 1rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Content Card (for Forms/Success pages) */
.content-card {
  background: var(--bg-card);
  padding: 3rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  max-width: 700px;
  margin: 2rem auto;
  border: 1px solid rgba(0,0,0,0.05);
}

.text-center {
  text-align: center;
}