/* ==========================================================================
   AntigravityGIS by Sounny — Esri Official Calcite Light Mode Styling
   Design System: Esri.com (Light Mode, #ffffff background, Esri Blue #0079c1)
   ========================================================================== */

:root {
  --esri-bg-light: #ffffff;
  --esri-bg-alt: #f8f9fa;
  --esri-bg-card: #ffffff;
  --esri-border: #e5e7eb;
  --esri-border-hover: #0079c1;
  --esri-blue-primary: #0079c1;
  --esri-blue-hover: #005e95;
  --esri-blue-light: #e6f4ff;
  --esri-blue-glow: rgba(0, 121, 193, 0.25);
  --esri-navy-dark: #001c38;
  --esri-text-main: #151515;
  --esri-text-sub: #4b5563;
  --esri-text-muted: #6b7280;
  --esri-green: #059669;
  --esri-yellow: #d97706;
  --font-esri: 'Avenir Next', Avenir, 'Helvetica Neue', 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'Consolas', 'Andale Mono', 'Space Grotesk', 'Fira Code', monospace;
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-esri);
  background-color: var(--esri-bg-light);
  color: var(--esri-text-main);
  line-height: 1.6;
}

body {
  overflow-x: hidden;
  background: var(--esri-bg-light);
}

/* Typography & Links */
h1, h2, h3, h4 {
  color: var(--esri-text-main);
  font-weight: 700;
  letter-spacing: -0.02em;
}

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

a:hover {
  color: var(--esri-blue-hover);
}

.mono {
  font-family: var(--font-mono);
}

/* Esri Light Navigation Bar */
.esri-navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--esri-border);
  padding: 0.65rem 2rem;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
}

.esri-nav-container {
  max-width: 1320px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.esri-brand-group {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
  color: var(--esri-text-main);
}

.nav-profile-img {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center;
  border: 1px solid var(--esri-border);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
}

.brand-text {
  font-weight: 800;
  font-size: 1.3rem;
  color: #0f172a;
}

.brand-badge {
  background: #eef6ff;
  color: var(--esri-blue-primary);
  border: 1px solid rgba(0, 121, 193, 0.2);
  padding: 0.2rem 0.65rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  font-weight: 600;
}


/* Esri Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--esri-blue-primary);
  color: #ffffff !important;
  padding: 0.75rem 1.6rem;
  border-radius: 6px;
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  box-shadow: 0 4px 14px var(--esri-blue-glow);
  transition: all 0.25s ease;
  border: 1px solid transparent;
}

.btn-primary:hover {
  background: var(--esri-blue-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0, 121, 193, 0.35);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: #ffffff;
  color: var(--esri-text-main);
  padding: 0.75rem 1.6rem;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid var(--esri-border);
  transition: all 0.25s ease;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
}

.btn-outline:hover {
  background: var(--esri-bg-alt);
  border-color: var(--esri-blue-primary);
  color: var(--esri-blue-primary);
  transform: translateY(-1px);
}

/* Hero Section (Tight Proportions matching Screenshot) */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #f0f7ff 0%, #ffffff 100%);
  border-bottom: 1px solid var(--esri-border);
  padding: 2.25rem 2rem 3rem 2rem;
}

#hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.hero-grid {
  position: relative;
  z-index: 2;
  max-width: 1320px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 3rem;
  align-items: center;
}

.hero h1 {
  font-size: 3.4rem;
  line-height: 1.12;
  margin-bottom: 1.25rem;
  color: #0f172a;
  font-weight: 800;
}

.hero p {
  font-size: 1.15rem;
  color: #475569;
  margin-bottom: 2rem;
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
}

/* Hero Image Wrapper */
.hero-image-wrapper {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image {
  width: 100%;
  max-width: 580px;
  border-radius: 16px;
  box-shadow: 0 15px 35px rgba(0, 121, 193, 0.12);
  transition: transform 0.3s ease;
  background: #ffffff;
}

.hero-image:hover {
  transform: translateY(-4px);
}

/* Code Inspector Box */
.code-box {
  background: #0d1117;
  border: 1px solid #30363d;
  border-radius: 8px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
  overflow: hidden;
}

.code-header {
  background: #161b22;
  padding: 0.85rem 1.25rem;
  border-bottom: 1px solid #30363d;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.code-tabs {
  display: flex;
  gap: 0.5rem;
}

.tab-btn {
  background: transparent;
  border: none;
  color: #8b949e;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 0.4rem 0.85rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s;
}

.tab-btn.active {
  background: var(--esri-blue-primary);
  color: #ffffff;
}

.code-body {
  padding: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: #e6edf3;
  line-height: 1.75;
  overflow-x: auto;
}

.code-body pre {
  white-space: pre-wrap;
}

.code-keyword { color: #ff7b72; }
.code-func { color: #79c0ff; }
.code-str { color: #a5d6ff; }
.code-comment { color: #8b949e; font-style: italic; }

/* Interactive Demo Simulator */
.demo-section {
  max-width: 1320px;
  margin: 5rem auto;
  padding: 0 2rem;
}

.demo-card {
  background: #ffffff;
  border: 1px solid var(--esri-border);
  border-radius: 8px;
  padding: 2.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
}

.demo-prompts-title {
  font-size: 1.15rem;
  margin-bottom: 1rem;
  color: var(--esri-blue-primary);
  font-weight: 700;
}

.prompt-pill {
  display: block;
  width: 100%;
  text-align: left;
  background: var(--esri-bg-alt);
  border: 1px solid var(--esri-border);
  color: var(--esri-text-main);
  padding: 0.85rem 1.25rem;
  border-radius: 6px;
  font-size: 0.92rem;
  cursor: pointer;
  margin-bottom: 0.75rem;
  transition: all 0.2s ease;
  font-weight: 500;
}

.prompt-pill:hover, .prompt-pill.active {
  background: var(--esri-blue-light);
  border-color: var(--esri-blue-primary);
  color: var(--esri-blue-primary);
  transform: translateX(4px);
}

.demo-output-box {
  background: #0d1117;
  border: 1px solid #30363d;
  border-radius: 6px;
  padding: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: #34d399;
  line-height: 1.7;
  overflow-y: auto;
  max-height: 280px;
}

/* Features Section */
.features-section {
  background: var(--esri-bg-alt);
  border-top: 1px solid var(--esri-border);
  border-bottom: 1px solid var(--esri-border);
  padding: 6rem 2rem;
}

.features-container {
  max-width: 1320px;
  margin: 0 auto;
}

.section-title {
  text-align: center;
  max-width: 750px;
  margin: 0 auto 4rem auto;
}

.section-title h2 {
  font-size: 2.4rem;
  margin-bottom: 0.75rem;
  color: #0b192c;
}

.section-title p {
  color: var(--esri-text-sub);
  font-size: 1.1rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: #ffffff;
  border: 1px solid var(--esri-border);
  border-radius: 8px;
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
}

.feature-card:hover {
  border-color: var(--esri-blue-primary);
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0, 121, 193, 0.12);
}

.icon-box {
  width: 52px;
  height: 52px;
  background: var(--esri-blue-light);
  border: 1px solid rgba(0, 121, 193, 0.2);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--esri-blue-primary);
  font-size: 1.4rem;
}

.feature-card h3 {
  font-size: 1.3rem;
  color: var(--esri-text-main);
}

.feature-card p {
  color: var(--esri-text-sub);
  font-size: 0.98rem;
  line-height: 1.65;
}

/* Alert Banner */
.alert-card {
  grid-column: 1 / -1;
  background: #fffbeb;
  border: 1px solid #fde68a;
  border-radius: 8px;
  padding: 2rem;
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.alert-icon {
  font-size: 2.4rem;
  color: var(--esri-yellow);
}

/* Steps */
.steps-container {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  max-width: 900px;
  margin: 0 auto;
}

.step-card {
  background: #ffffff;
  border: 1px solid var(--esri-border);
  border-left: 4px solid var(--esri-blue-primary);
  border-radius: 8px;
  padding: 2rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
}

.step-title {
  font-size: 1.25rem;
  color: var(--esri-blue-primary);
  margin-bottom: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
}

.step-card code {
  background: #0d1117;
  color: #34d399;
  padding: 0.85rem 1.2rem;
  border-radius: 6px;
  display: block;
  font-family: var(--font-mono);
  margin-top: 0.85rem;
}

/* Space Applications Creator Spotlight */
.creator-section {
  max-width: 1320px;
  margin: 6rem auto;
  padding: 0 2rem;
}

.creator-card {
  background: #ffffff;
  border: 1px solid var(--esri-border);
  border-top: 4px solid var(--esri-blue-primary);
  border-radius: 8px;
  padding: 3.5rem;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 3.5rem;
  align-items: center;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
}

.creator-photo-wrapper {
  position: relative;
  width: 200px;
  height: 200px;
}

.creator-photo {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  object-position: 50% 15%;
  border: 4px solid var(--esri-blue-primary);
  box-shadow: 0 6px 20px rgba(0, 121, 193, 0.2);
}

.space-badge {
  position: absolute;
  bottom: 0;
  right: 0;
  background: var(--esri-blue-primary);
  color: #ffffff;
  font-weight: 700;
  font-size: 0.75rem;
  padding: 0.35rem 0.75rem;
  border-radius: 20px;
  border: 2px solid #ffffff;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.creator-info h3 {
  font-size: 2.3rem;
  margin-bottom: 0.4rem;
  color: var(--esri-text-main);
}

.creator-subtitle {
  color: var(--esri-blue-primary);
  font-family: var(--font-mono);
  font-size: 1.05rem;
  margin-bottom: 1.25rem;
  font-weight: 700;
}

.creator-info p {
  color: var(--esri-text-sub);
  margin-bottom: 1.75rem;
  font-size: 1.08rem;
  line-height: 1.75;
}

.creator-actions {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

/* Footer */
footer {
  background: #0f172a;
  padding: 4rem 2rem 3rem 2rem;
  color: #94a3b8;
}

.footer-container {
  max-width: 1320px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 2rem;
}

footer a {
  color: #38bdf8;
}

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; text-align: left; }
  .hero-image-wrapper { display: none; }
  .creator-card { grid-template-columns: 1fr; text-align: center; justify-items: center; }
  .demo-card { grid-template-columns: 1fr; }
  .esri-nav-links { display: none; }
}