/* Gemma GPS Website - Modern Responsive Styles */

/* ==========================================
   CSS Variables
   ========================================== */
:root {
  --color-primary: #007AFF;
  --color-primary-dark: #0056b3;
  --color-text: #1d1d1f;
  --color-text-muted: #6e6e73;
  --color-background: #ffffff;
  --color-background-alt: #f5f5f7;
  --color-border: #d2d2d7;
  --color-accent: #34c759;

  --font-system: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", SFMono-Regular, ui-monospace, Menlo, Monaco, "Cascadia Mono", "Segoe UI Mono", "Roboto Mono", monospace;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;

  --max-width: 1200px;
  --max-width-narrow: 800px;
}

/* ==========================================
   Base Reset & Typography
   ========================================== */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-system);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  margin-top: 0;
  margin-bottom: var(--space-sm);
  font-weight: 600;
  line-height: 1.2;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.25rem; }

p {
  margin-top: 0;
  margin-bottom: var(--space-sm);
}

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

a:hover {
  text-decoration: underline;
}

ul {
  margin: 0;
  padding-left: 1.5rem;
}

li {
  margin-bottom: var(--space-xs);
}

/* ==========================================
   Layout
   ========================================== */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

section {
  padding: var(--space-2xl) 0;
}

/* ==========================================
   Header
   ========================================== */
.site-header {
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 100;
}

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

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

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

.nav {
  display: flex;
  gap: var(--space-md);
}

.nav a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

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

/* ==========================================
   Buttons
   ========================================== */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 500;
  text-align: center;
  text-decoration: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

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

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

.btn-large {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
  text-align: center;
  padding: var(--space-3xl) 0;
  background: linear-gradient(180deg, var(--color-background) 0%, var(--color-background-alt) 100%);
}

.hero h1 {
  font-size: 2.75rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
}

.hero .highlight {
  color: var(--color-primary);
}

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

.hero .platforms {
  margin-top: var(--space-sm);
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* Hero Two-Column Layout */
.hero-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  margin-top: var(--space-xl);
  text-align: left;
}

.hero-download,
.hero-try-it {
  background: var(--color-background);
  padding: var(--space-lg);
  border-radius: 16px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.hero-download h2,
.hero-try-it h2 {
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
}

.hero-download p,
.hero-try-it p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.hero-download .btn,
.hero-try-it .btn {
  width: 100%;
  margin-bottom: var(--space-sm);
}

.hero-download .platforms {
  text-align: center;
  margin-top: var(--space-sm);
}

.hero-try-it .location-status {
  margin: var(--space-md) 0;
  padding: var(--space-sm);
  border-radius: 8px;
  font-size: 0.9rem;
}

.hero-try-it .location-status.info {
  background: #e3f2fd;
  color: #1565c0;
}

.hero-try-it .location-status.error {
  background: #ffebee;
  color: #c62828;
}

.hero-try-it .location-results {
  margin-top: var(--space-md);
}

.hero-try-it .result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
}

.hero-try-it .result-card {
  background: var(--color-background-alt);
  padding: var(--space-sm);
  border-radius: 8px;
}

.hero-try-it .result-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}

.hero-try-it .result-value {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-text);
  word-break: break-all;
}

.hero-try-it .result-dms,
.hero-try-it .result-ddm {
  font-size: 0.8rem;
  margin-bottom: 0.15rem;
}

.hero-try-it .accuracy-note {
  text-align: center;
  margin-top: var(--space-sm);
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.hero-try-it .privacy-note {
  text-align: center;
  margin-top: var(--space-md);
  margin-bottom: 0;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.hero-try-it #get-location-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

/* ==========================================
   Formats Section
   ========================================== */
.formats {
  background-color: var(--color-background);
}

.formats h2 {
  text-align: center;
  margin-bottom: var(--space-md);
}

.section-intro {
  text-align: center;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto var(--space-xl);
}

.format-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.format-card {
  background: var(--color-background-alt);
  padding: var(--space-md);
  border-radius: 12px;
  text-align: center;
}

.format-name {
  font-weight: 600;
  font-size: 1rem;
  margin-bottom: var(--space-xs);
}

.format-example {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
  word-break: break-all;
}

.format-use {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* ==========================================
   Try It Now Section
   ========================================== */
.try-it {
  background-color: var(--color-background);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.try-it h2 {
  text-align: center;
}

.try-it-container {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.location-status {
  margin: var(--space-md) 0;
  padding: var(--space-sm) var(--space-md);
  border-radius: 8px;
  font-size: 0.95rem;
}

.location-status.info {
  background: #e3f2fd;
  color: #1565c0;
}

.location-status.error {
  background: #ffebee;
  color: #c62828;
}

.location-results {
  margin-top: var(--space-lg);
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-md);
  text-align: left;
}

.result-card {
  background: var(--color-background-alt);
  padding: var(--space-md);
  border-radius: 8px;
}

.result-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-xs);
}

.result-value {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--color-text);
  word-break: break-all;
}

.result-dms {
  font-size: 0.9rem;
  margin-bottom: 0.25rem;
}

.accuracy-note {
  text-align: center;
  margin-top: var(--space-md);
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.privacy-note {
  text-align: center;
  margin-top: var(--space-lg);
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

#get-location-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

/* ==========================================
   Features Section
   ========================================== */
.features {
  background-color: var(--color-background-alt);
}

.features h2 {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.feature {
  text-align: center;
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-sm);
}

.feature h3 {
  margin-bottom: var(--space-xs);
}

.feature p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ==========================================
   Audiences Section
   ========================================== */
.audiences {
  background-color: var(--color-background);
}

.audiences h2 {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.audience-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-lg);
}

.audience {
  padding: var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: 12px;
}

.audience h3 {
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

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

/* ==========================================
   Tools Section
   ========================================== */
.tools {
  background-color: var(--color-background-alt);
}

.tools h2 {
  text-align: center;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-lg);
}

.tool-category {
  background: var(--color-background);
  padding: var(--space-md);
  border-radius: 12px;
}

.tool-category h3 {
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
  font-size: 1.1rem;
}

.tool-category ul {
  list-style: none;
  padding: 0;
}

.tool-category li {
  padding: var(--space-xs) 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.95rem;
}

.tool-category li:last-child {
  border-bottom: none;
}

/* ==========================================
   FAQ Section
   ========================================== */
.faq {
  background-color: var(--color-background);
}

.faq h2 {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.faq .container {
  max-width: var(--max-width-narrow);
}

details {
  margin-bottom: var(--space-sm);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  overflow: hidden;
}

summary {
  padding: var(--space-md);
  cursor: pointer;
  font-weight: 500;
  background: var(--color-background-alt);
  list-style: none;
}

summary::-webkit-details-marker {
  display: none;
}

summary::before {
  content: "+";
  display: inline-block;
  width: 1.5rem;
  font-weight: 400;
  color: var(--color-primary);
}

details[open] summary::before {
  content: "-";
}

details[open] summary {
  border-bottom: 1px solid var(--color-border);
}

details p {
  padding: var(--space-md);
  margin: 0;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ==========================================
   CTA Section
   ========================================== */
.cta {
  text-align: center;
  background: linear-gradient(180deg, var(--color-background-alt) 0%, var(--color-background) 100%);
  padding: var(--space-3xl) 0;
}

.cta h2 {
  font-size: 1.75rem;
  margin-bottom: var(--space-lg);
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.cta .privacy {
  margin-top: var(--space-md);
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* ==========================================
   Footer
   ========================================== */
.site-footer {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--color-border);
  background: var(--color-background);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: var(--space-lg);
}

.footer-info p {
  margin-bottom: var(--space-xs);
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  gap: var(--space-md);
}

.footer-links a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: var(--color-primary);
}

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 768px) {
  html {
    font-size: 15px;
  }

  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }

  .hero {
    padding: var(--space-xl) 0;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero .lead {
    font-size: 1.1rem;
  }

  .hero-columns {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .hero-download,
  .hero-try-it {
    text-align: center;
  }

  .hero-try-it .result-grid {
    grid-template-columns: 1fr 1fr;
  }

  section {
    padding: var(--space-xl) 0;
  }

  .nav {
    gap: var(--space-sm);
  }

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

  .footer-content {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }

  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .site-header .container {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .hero h1 {
    font-size: 1.75rem;
  }

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

  .feature-grid,
  .audience-grid,
  .tools-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================
   Print Styles
   ========================================== */
@media print {
  .site-header,
  .site-footer,
  .btn {
    display: none;
  }

  body {
    font-size: 12pt;
  }

  section {
    padding: 1rem 0;
    page-break-inside: avoid;
  }
}

/* ==========================================
   Coordinates Test Page Styles
   ========================================== */
.coords-page {
  max-width: var(--max-width-narrow);
  margin: 0 auto;
  padding: var(--space-lg);
}

.coords-page h1 {
  margin-bottom: var(--space-lg);
}

.coords-section {
  margin-bottom: var(--space-xl);
}

.coords-section h2 {
  font-size: 1.25rem;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-xs);
  border-bottom: 2px solid var(--color-primary);
}

.coords-table {
  width: 100%;
  border-collapse: collapse;
}

.coords-table td {
  padding: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
}

.coords-table tr:hover {
  background-color: var(--color-background-alt);
}

.coord-name {
  font-weight: 500;
}

.coord-name a {
  display: block;
}

.coord-dms {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.coords-note {
  background: var(--color-background-alt);
  padding: var(--space-md);
  border-radius: 8px;
  margin-bottom: var(--space-lg);
}

.coords-note code {
  font-family: var(--font-mono);
  background: var(--color-background);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-size: 0.9rem;
}