/* Reset and base styles */
*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-text: #1f2937;
  --color-text-muted: #6b7280;
  --color-bg: #ffffff;
  --color-bg-alt: #f9fafb;
  --color-border: #e5e7eb;
  --font-sans: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, monospace;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
}

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

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

a:hover {
  text-decoration: underline;
}

h1, h2, h3, h4, h5, h6 {
  margin-top: 0;
  line-height: 1.3;
}

/* Header */
.site-header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.logo {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
}

.logo:hover {
  text-decoration: none;
  color: var(--color-primary);
}

.main-nav {
  display: flex;
  gap: 24px;
}

.main-nav a {
  color: var(--color-text-muted);
  font-weight: 500;
}

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

/* Hero */
.hero {
  background: url("/images/hero-bg1.jpg") center / cover no-repeat;
  padding: 120px 0;
  min-height: 60vh;
  position: relative;
  text-align: center;
}

.hero .container {
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 16px;
  backdrop-filter: blur(10px) saturate(140%);
  -webkit-backdrop-filter: blur(10px) saturate(140%);
  padding: 32px 24px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.25);
  max-width: 900px;
}

.hero-caption {
  position: absolute;
  right: 24px;
  bottom: 24px;
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 12px;
  backdrop-filter: blur(10px) saturate(140%);
  -webkit-backdrop-filter: blur(10px) saturate(140%);
  padding: 10px 14px;
  font-size: 0.9rem;
  color: var(--color-text);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.2);
}

.hero-logo {
  display: block;
  width: min(240px, 60vw);
  height: auto;
  margin: 0 auto 24px;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 16px;
}

.tagline {
  font-size: 1.4rem;
  font-weight: 600;
  color: #0f1a24;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 6px;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.2s;
}

.btn:hover {
  text-decoration: none;
}

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

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

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

.btn-secondary:hover {
  background: var(--color-bg-alt);
  border-color: var(--color-text-muted);
}

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

.features h2 {
  text-align: center;
  margin-bottom: 48px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 32px;
}

.feature {
  padding: 24px;
  background: var(--color-bg-alt);
  border-radius: 8px;
}

.feature h3 {
  margin-bottom: 8px;
}

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

/* Demo section */
.demo {
  padding: 80px 0;
  background: var(--color-bg-alt);
  text-align: center;
}

.demo h2 {
  margin-bottom: 16px;
}

.demo p {
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto 32px;
}

/* Content pages */
.content {
  padding: 48px 0;
}

.content h1 {
  margin-bottom: 24px;
}

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

.page-list li {
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}

.page-list li:last-child {
  border-bottom: none;
}

.page-list a {
  font-size: 1.125rem;
  font-weight: 500;
}

.page-list p {
  margin: 8px 0 0;
  color: var(--color-text-muted);
}

/* Image layouts */
.image-row {
  display: flex;
  gap: 24px;
  margin: 24px 0;
}

.image-row figure {
  flex: 1;
  margin: 0;
}

.image-row img {
  width: 100%;
  height: auto;
}

.image-row figcaption {
  margin-top: 8px;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  text-align: center;
}

@media (max-width: 768px) {
  .image-row {
    flex-direction: column;
  }
}

/* Code blocks */
pre {
  background: var(--color-bg-alt);
  padding: 16px;
  border-radius: 6px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

code {
  font-family: var(--font-mono);
  background: var(--color-bg-alt);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.875em;
}

pre code {
  background: none;
  padding: 0;
}

/* Footer */
.site-footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: 32px 0;
  text-align: center;
}

.site-footer p {
  margin: 0 0 8px;
  color: var(--color-text-muted);
}

.site-footer p:last-child {
  margin-bottom: 0;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2rem;
  }

  .tagline {
    font-size: 1rem;
  }

  .main-nav {
    gap: 16px;
  }

  .features,
  .demo {
    padding: 48px 0;
  }
}