/* PersianKidsLearn — Warm, kid-friendly design */

:root {
  --blue: #4A90D9;
  --blue-light: #E8F0FE;
  --coral: #E8836B;
  --cream: #FFF8F0;
  --dark: #2D2D2D;
  --gray: #666666;
  --gray-light: #F5F5F5;
  --radius: 12px;
}

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

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--cream);
  color: var(--dark);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
  width: 100%;
}

/* Navbar */
.navbar {
  background: white;
  border-bottom: 2px solid var(--blue-light);
  padding: 14px 0;
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--blue);
  text-decoration: none;
}

.nav-links a {
  color: var(--gray);
  text-decoration: none;
  margin-left: 24px;
  font-size: 0.95rem;
}

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

/* Hero */
.hero {
  text-align: center;
  padding: 48px 0 32px;
}

.hero h1 {
  font-size: 2rem;
  color: var(--dark);
  margin-bottom: 12px;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--gray);
  max-width: 560px;
  margin: 0 auto;
}

/* Worksheet Cards Grid */
.worksheets-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
  padding-bottom: 48px;
}

.card {
  background: white;
  border-radius: var(--radius);
  padding: 28px 24px;
  text-decoration: none;
  color: var(--dark);
  border: 1px solid #E8E8E8;
  transition: transform 0.15s, box-shadow 0.15s;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(74, 144, 217, 0.12);
  border-color: var(--blue);
}

.card-icon {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--coral);
  background: #FFF0EC;
  width: 52px;
  height: 52px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}

.card h2 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.card p {
  font-size: 0.9rem;
  color: var(--gray);
  line-height: 1.5;
}

/* Generator Form Page */
.generator-page {
  padding: 32px 0 48px;
  max-width: 520px;
  margin: 0 auto;
}

.back-link {
  display: inline-block;
  color: var(--blue);
  text-decoration: none;
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.back-link:hover {
  text-decoration: underline;
}

.generator-page h1 {
  font-size: 1.6rem;
  margin-bottom: 24px;
}

.generator-form {
  background: white;
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid #E8E8E8;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
  font-size: 0.95rem;
}

.form-group select,
.form-group input[type="text"] {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid #D0D0D0;
  border-radius: 8px;
  font-size: 1rem;
  color: var(--dark);
  background: white;
}

.form-group select:focus,
.form-group input:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(74, 144, 217, 0.15);
}

.btn {
  display: inline-block;
  background: var(--blue);
  color: white;
  border: none;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s;
}

.btn:hover {
  background: #3A7BC8;
}

/* About Page */
.about-page {
  padding: 32px 0 48px;
  max-width: 640px;
  margin: 0 auto;
}

.about-page h1 {
  font-size: 1.6rem;
  margin-bottom: 16px;
}

.about-page h2 {
  font-size: 1.2rem;
  margin: 24px 0 8px;
  color: var(--blue);
}

.about-page p {
  color: var(--gray);
  margin-bottom: 12px;
}

.about-page ul {
  color: var(--gray);
  padding-left: 24px;
  margin-bottom: 12px;
}

.about-page li {
  margin-bottom: 6px;
}

.about-page .btn {
  margin-top: 16px;
}

/* Error Page */
.error-page {
  text-align: center;
  padding: 80px 0;
}

.error-page h1 {
  font-size: 2rem;
  margin-bottom: 12px;
}

.error-page p {
  color: var(--gray);
  margin-bottom: 20px;
}

/* Footer */
.site-footer {
  margin-top: auto;
  background: white;
  border-top: 1px solid #E8E8E8;
  padding: 20px 0;
  text-align: center;
}

.site-footer p {
  font-size: 0.85rem;
  color: var(--gray);
}

/* Responsive */
@media (max-width: 600px) {
  .hero h1 {
    font-size: 1.5rem;
  }

  .worksheets-grid {
    grid-template-columns: 1fr;
  }

  .generator-form {
    padding: 20px;
  }
}