/* Notelet Website - Global Styles */

:root {
  --primary-color: #1C86F0;
  --primary-hover: #1570D1;
  --text-dark: #1a1a1a;
  --text-gray: #666;
  --text-light: #999;
  --bg-light: #f8f9fa;
  --bg-white: #ffffff;
  --border-color: #e5e7eb;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  color: var(--text-dark);
  line-height: 1.6;
  background: var(--bg-white);
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Navigation */
nav {
  background: var(--bg-white);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.95);
}

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

nav .logo {
  font-size: 22px;
  font-weight: 600;
  color: var(--text-dark);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 10px;
}

nav .logo svg {
  width: 28px;
  height: 28px;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 32px;
  align-items: center;
}

nav a {
  color: var(--text-gray);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

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

/* Hero Section */
.hero {
  padding: 80px 0 100px;
  text-align: center;
  background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
}

.hero h1 {
  font-size: 56px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-dark);
  line-height: 1.1;
}

.hero .tagline {
  font-size: 24px;
  color: var(--text-gray);
  margin-bottom: 40px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.hero .cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 60px;
}

.btn {
  padding: 14px 32px;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  display: inline-block;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: var(--primary-color);
  color: white;
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: white;
  color: var(--text-dark);
  border: 2px solid var(--border-color);
}

.btn-secondary:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.hero-image {
  max-width: 900px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  background: var(--bg-light);
  padding: 60px 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-image svg {
  width: 120px;
  height: 120px;
  opacity: 0.3;
}

/* Features Grid */
.features {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  font-size: 42px;
  font-weight: 700;
  margin-bottom: 60px;
  color: var(--text-dark);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 40px;
}

.feature-card {
  padding: 32px;
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all 0.3s;
}

.feature-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: var(--primary-color);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.feature-icon svg {
  width: 24px;
  height: 24px;
  fill: white;
}

.feature-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-dark);
}

.feature-card p {
  color: var(--text-gray);
  line-height: 1.7;
}

/* Footer */
footer {
  background: var(--text-dark);
  color: white;
  padding: 32px 0;
  margin-top: 80px;
}

footer .container {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
}

footer a {
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color 0.2s;
}

footer a:hover {
  color: white;
}

footer .pm7-logo {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 40px;
  }

  .hero .tagline {
    font-size: 18px;
  }

  .hero .cta-buttons {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 300px;
  }

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

  nav ul {
    gap: 20px;
  }

  .section-title {
    font-size: 32px;
  }
}

/* Detail Pages */
.page-header {
  padding: 60px 0 40px;
  text-align: center;
  background: var(--bg-light);
  border-bottom: 1px solid var(--border-color);
}

.page-header h1 {
  font-size: 42px;
  font-weight: 700;
  margin-bottom: 12px;
}

.page-header p {
  font-size: 18px;
  color: var(--text-gray);
}

.content-section {
  padding: 60px 0;
}

.content-section h2 {
  font-size: 32px;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--text-dark);
}

.content-section h3 {
  font-size: 22px;
  font-weight: 600;
  margin-top: 40px;
  margin-bottom: 16px;
  color: var(--text-dark);
}

.content-section p {
  color: var(--text-gray);
  margin-bottom: 16px;
  line-height: 1.8;
}

.content-section ul {
  margin-left: 24px;
  margin-bottom: 20px;
}

.content-section li {
  color: var(--text-gray);
  margin-bottom: 8px;
  line-height: 1.7;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
  margin-bottom: 32px;
  transition: gap 0.2s;
}

.back-link:hover {
  gap: 12px;
}

.setting-item {
  padding: 24px;
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
}

.setting-item h3 {
  margin-top: 0;
  margin-bottom: 8px;
  font-size: 18px;
}

.setting-meta {
  display: flex;
  gap: 16px;
  margin-top: 12px;
  font-size: 14px;
}

.setting-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-light);
}

.setting-meta-item strong {
  color: var(--text-gray);
}

code {
  background: var(--bg-light);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: 'SF Mono', Monaco, Menlo, monospace;
  font-size: 14px;
  color: var(--primary-color);
}