/* ============================================================
   CoworkX — GitHub Pages Styles
   ============================================================ */

:root {
  --color-primary: #0071e3;
  --color-primary-hover: #0077ed;
  --color-bg: #ffffff;
  --color-bg-secondary: #f5f5f7;
  --color-text: #1d1d1f;
  --color-text-secondary: #6e6e73;
  --color-border: #d2d2d7;
  --color-accent: #1d1d1f;
  --color-footer-bg: #f5f5f7;
  --max-width: 980px;
  --font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display",
    "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

/* Reset & Base */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

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

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

img {
  max-width: 100%;
  height: auto;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: saturate(180%) blur(20px);
  background-color: rgba(255, 255, 255, 0.8);
}

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

.site-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.site-title:hover {
  text-decoration: none;
  color: var(--color-text);
}

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

.main-nav a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color 0.2s ease;
}

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

/* Hero Section */
.hero {
  text-align: center;
  padding: 80px 0 60px;
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
}

.hero h1 {
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 16px;
}

.hero .subtitle {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto 32px;
  line-height: 1.5;
}

.hero .badge {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Buttons */
.btn {
  display: inline-block;
  font-size: 1rem;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: 980px;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

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

.btn-primary:hover {
  background: var(--color-primary-hover);
  text-decoration: none;
  color: #fff;
}

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

.btn-secondary:hover {
  background: var(--color-primary);
  color: #fff;
  text-decoration: none;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Section */
.section {
  padding: 64px 0;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  text-align: center;
  margin-bottom: 48px;
}

.section-alt {
  background: var(--color-bg-secondary);
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--color-bg);
  border-radius: 18px;
  padding: 28px;
  border: 1px solid var(--color-border);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.feature-card .icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.feature-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* Screenshots */
.screenshots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.screenshot-item {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
}

.screenshot-item img {
  display: block;
  width: 100%;
  height: auto;
}

.screenshot-item .caption {
  padding: 8px 12px;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  text-align: center;
}

/* Pricing / Tiers */
.tiers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.tier-card {
  background: var(--color-bg);
  border-radius: 18px;
  padding: 32px;
  border: 1px solid var(--color-border);
  text-align: center;
}

.tier-card.featured {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary);
}

.tier-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.tier-card .price {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.tier-card .price-period {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
}

.tier-card ul {
  list-style: none;
  text-align: left;
  margin-bottom: 24px;
}

.tier-card ul li {
  padding: 6px 0;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

.tier-card ul li::before {
  content: "✓";
  color: var(--color-primary);
  font-weight: 700;
  margin-right: 8px;
}

/* Support Page */
.support-section {
  max-width: 700px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: 24px 0;
}

.faq-item:first-of-type {
  border-top: 1px solid var(--color-border);
}

.faq-item h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.faq-item p {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.contact-box {
  background: var(--color-bg-secondary);
  border-radius: 18px;
  padding: 32px;
  text-align: center;
  margin-top: 48px;
}

.contact-box h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.contact-box p {
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}

.contact-box .email {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-primary);
}

/* Privacy Policy */
.privacy-content {
  max-width: 700px;
  margin: 0 auto;
}

.privacy-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 40px;
  margin-bottom: 12px;
}

.privacy-content h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-top: 28px;
  margin-bottom: 8px;
}

.privacy-content p {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.privacy-content ul {
  margin: 0 0 16px 24px;
}

.privacy-content ul li {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 4px;
}

.privacy-content .effective-date {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-bottom: 32px;
}

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

.site-footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.site-footer .footer-links {
  display: flex;
  gap: 20px;
}

.site-footer .footer-links a {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

.site-footer .copyright {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

/* Page Header (inner pages) */
.page-header {
  text-align: center;
  padding: 64px 0 32px;
}

.page-header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.page-header p {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
}

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

  .hero .subtitle {
    font-size: 1.0625rem;
  }

  .section-title {
    font-size: 1.5rem;
  }

  .site-header .container {
    flex-direction: column;
    gap: 12px;
  }

  .main-nav {
    gap: 16px;
  }

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

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

  .screenshots-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .site-footer .container {
    flex-direction: column;
    text-align: center;
  }

  .page-header h1 {
    font-size: 1.75rem;
  }
}

@media (max-width: 480px) {
  .screenshots-grid {
    grid-template-columns: 1fr;
  }

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

  .btn {
    width: 100%;
    max-width: 280px;
    text-align: center;
  }
}