/* ==========================================================================
   JaWa Android Landing Page — Section Layouts & Page Styling
   ========================================================================== */

/* --------------------------------------------------------------------------
   Background Ambient Lighting & Grid
   -------------------------------------------------------------------------- */
.page-wrapper {
  position: relative;
  overflow: hidden;
  background-color: var(--color-bg-primary);
}

.bg-ambient-glow {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 1400px;
  height: 800px;
  background: radial-gradient(circle at 50% 15%, rgba(16, 185, 129, 0.16) 0%, rgba(6, 182, 212, 0.08) 35%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.bg-ambient-secondary {
  position: absolute;
  top: 1800px;
  left: 0;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.08) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.bg-grid-overlay {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 50% 20%, black 40%, transparent 85%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 20%, black 40%, transparent 85%);
  pointer-events: none;
  z-index: 0;
}

/* --------------------------------------------------------------------------
   Header & Navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 1000;
  transition: all var(--transition-normal);
}

.site-header.scrolled {
  background: rgba(7, 10, 16, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border-subtle);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand-logo-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  box-shadow: var(--glow-emerald-sm);
  border: 1px solid var(--color-border-accent);
}

.brand-name {
  color: var(--color-text-primary);
}

.brand-name span {
  color: var(--color-brand-primary);
}

.brand-tagline {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--color-text-muted);
  display: block;
  line-height: 1;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-link {
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  position: relative;
  padding: 0.35rem 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--color-brand-light);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-brand-primary);
  border-radius: var(--radius-full);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* Mobile Menu Button */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border-subtle);
  color: var(--color-text-primary);
}

.mobile-menu-btn span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}
.mobile-menu-btn.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Nav Drawer */
.mobile-drawer {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(7, 10, 16, 0.98);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  padding: var(--space-xl) var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 999;
}

.mobile-drawer.open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.mobile-nav-link {
  font-size: 1.25rem;
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-text-primary);
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--color-border-subtle);
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero-section {
  position: relative;
  padding-top: calc(var(--header-height) + var(--space-3xl));
  padding-bottom: var(--space-4xl);
  z-index: 1;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: var(--space-3xl);
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.hero-announcement {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.35rem 0.95rem;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-full);
  font-size: 0.825rem;
  color: var(--color-text-secondary);
  width: fit-content;
}

.hero-announcement a {
  color: var(--color-brand-light);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.hero-announcement a:hover {
  text-decoration: underline;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 5vw, 4.1rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.035em;
  color: var(--color-text-primary);
}

.hero-description {
  font-size: 1.2rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  max-width: 620px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-xs);
}

.hero-meta-strip {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border-subtle);
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.meta-item svg {
  color: var(--color-brand-light);
}

/* Hero Showcase Mockup */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.phone-mockup-wrapper {
  position: relative;
  width: 100%;
  max-width: 340px;
  border-radius: 40px;
  padding: 10px;
  background: linear-gradient(145deg, #1E293B, #0F172A);
  box-shadow: 0 35px 70px -15px rgba(0, 0, 0, 0.85),
              0 0 50px -10px rgba(16, 185, 129, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.phone-inner-screen {
  position: relative;
  border-radius: 32px;
  overflow: hidden;
  background: #0F172A;
  aspect-ratio: 9 / 18;
}

.phone-inner-screen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Floating Badges on Mockup */
.floating-chip {
  position: absolute;
  padding: 0.65rem 1rem;
  background: rgba(15, 23, 42, 0.88);
  border: 1px solid var(--color-border-accent);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.825rem;
  color: var(--color-text-primary);
  font-weight: 500;
  z-index: 2;
  animation: floatAnim 4s ease-in-out infinite alternate;
}

.chip-top {
  top: 12%;
  left: -18%;
}

.chip-bottom {
  bottom: 14%;
  right: -16%;
  animation-delay: -2s;
}

@keyframes floatAnim {
  0% { transform: translateY(0); }
  100% { transform: translateY(-10px); }
}

/* --------------------------------------------------------------------------
   Capabilities Grid Section
   -------------------------------------------------------------------------- */
.capabilities-section {
  position: relative;
  padding: var(--space-4xl) 0;
  z-index: 1;
}

.capabilities-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: var(--space-xl);
}

/* --------------------------------------------------------------------------
   Architecture & Workflow Section
   -------------------------------------------------------------------------- */
.architecture-section {
  position: relative;
  padding: var(--space-4xl) 0;
  background: linear-gradient(180deg, transparent 0%, rgba(13, 18, 29, 0.6) 50%, transparent 100%);
  z-index: 1;
}

.architecture-diagram-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-2xl);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-xl);
  margin-bottom: var(--space-3xl);
}

.diagram-interactive-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  align-items: center;
}

.diagram-node {
  background: var(--color-bg-surface-elevated);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-lg);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  position: relative;
  transition: all var(--transition-normal);
}

.diagram-node:hover {
  border-color: var(--color-brand-primary);
  box-shadow: var(--glow-emerald-sm);
  transform: translateY(-3px);
}

.diagram-node.node-central {
  border-color: var(--color-brand-primary);
  background: radial-gradient(circle at top, rgba(16, 185, 129, 0.15) 0%, rgba(22, 32, 51, 0.8) 100%);
  box-shadow: var(--glow-emerald);
}

.node-icon-box {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-brand-light);
}

.node-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.node-desc {
  font-size: 0.825rem;
  color: var(--color-text-muted);
  line-height: 1.4;
}

/* Workflow Steps */
.workflow-steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-lg);
}

.step-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.step-number {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-brand-primary);
  line-height: 1;
}

.step-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.step-text {
  font-size: 0.925rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   API & Developer Integration Section
   -------------------------------------------------------------------------- */
.api-section {
  position: relative;
  padding: var(--space-4xl) 0;
  z-index: 1;
}

.api-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: var(--space-2xl);
  align-items: flex-start;
}

.api-features-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.api-feature-item {
  display: flex;
  gap: var(--space-md);
}

.api-feature-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--color-brand-gradient-subtle);
  border: 1px solid var(--color-border-accent);
  color: var(--color-brand-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.api-feature-item h4 {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 0.25rem;
}

.api-feature-item p {
  font-size: 0.925rem;
  color: var(--color-text-secondary);
  line-height: 1.55;
}

/* --------------------------------------------------------------------------
   Background Lifecycle & Battery Honesty Section
   -------------------------------------------------------------------------- */
.lifecycle-section {
  position: relative;
  padding: var(--space-4xl) 0;
  z-index: 1;
}

.lifecycle-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-2xl);
  padding: var(--space-2xl);
}

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

.lifecycle-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.lifecycle-item-header {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-text-primary);
}

.lifecycle-item-header svg {
  color: var(--color-brand-light);
}

.lifecycle-item p {
  font-size: 0.925rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   Download & Release Metadata Section
   -------------------------------------------------------------------------- */
.download-section {
  position: relative;
  padding: var(--space-4xl) 0;
  z-index: 1;
}

.download-box {
  background: radial-gradient(circle at top left, rgba(16, 185, 129, 0.15) 0%, rgba(18, 25, 39, 0.9) 50%, var(--color-bg-surface) 100%);
  border: 1px solid var(--color-border-accent);
  border-radius: var(--radius-2xl);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-xl), var(--glow-emerald);
}

.download-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-lg);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--color-border-subtle);
  margin-bottom: var(--space-xl);
}

.download-brand {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.download-app-icon {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-lg);
  box-shadow: var(--glow-emerald-sm);
  border: 1px solid var(--color-border-accent);
}

.download-title-group h3 {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.download-meta-chips {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: 0.35rem;
}

.download-actions-group {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-xs);
}

.download-grid-specs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.spec-cell {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-md);
}

.spec-label {
  font-size: 0.775rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: 0.25rem;
}

.spec-value {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.hash-box {
  background: var(--color-bg-code);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.hash-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--color-brand-light);
  font-weight: 600;
}

.hash-string {
  font-family: var(--font-mono);
  font-size: 0.825rem;
  color: var(--color-text-secondary);
  word-break: break-all;
}

.release-notes-box {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}

.release-notes-box h4 {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
}

.release-notes-content {
  font-size: 0.925rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   FAQ Section
   -------------------------------------------------------------------------- */
.faq-section {
  position: relative;
  padding: var(--space-4xl) 0;
  z-index: 1;
}

/* --------------------------------------------------------------------------
   Site Footer
   -------------------------------------------------------------------------- */
.site-footer {
  position: relative;
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border-subtle);
  padding: var(--space-4xl) 0 var(--space-2xl) 0;
  z-index: 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.footer-brand-logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-text-primary);
}

.footer-desc {
  font-size: 0.925rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 320px;
}

.footer-col h4 {
  font-family: var(--font-heading);
  font-size: 0.925rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-primary);
  margin-bottom: var(--space-lg);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-link {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-brand-light);
}

.footer-bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.disclaimer-text {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  margin-top: var(--space-xs);
  max-width: 900px;
}

/* --------------------------------------------------------------------------
   Responsive Breakpoints
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
    text-align: center;
  }
  .hero-content {
    align-items: center;
  }
  .hero-cta-group {
    justify-content: center;
  }
  .hero-meta-strip {
    justify-content: center;
  }
  .chip-top { left: -5%; }
  .chip-bottom { right: -5%; }
  .api-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
  }
}

@media (max-width: 768px) {
  .desktop-nav {
    display: none;
  }
  .mobile-menu-btn {
    display: flex;
  }
  .diagram-interactive-grid {
    grid-template-columns: 1fr;
  }
  .download-header {
    flex-direction: column;
    align-items: flex-start;
  }
  .download-actions-group {
    align-items: flex-start;
    width: 100%;
  }
  .download-actions-group .btn {
    width: 100%;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .chip-top, .chip-bottom {
    position: static;
    margin: 0.5rem auto;
  }
}