/* CSS Custom Variables representing the ArchiValora AI Design System */
:root {
  --primary: #1D63FF;
  --primary-hover: #004BD3;
  --primary-glow: rgba(29, 99, 255, 0.4);
  --bg-navy: #050714;
  --bg-navy-dim: #0a0c1f;
  --bg-card: rgba(10, 12, 31, 0.65);
  --border-color: rgba(29, 99, 255, 0.15);
  --border-hover: rgba(29, 99, 255, 0.35);
  --text-light: #F8FAFC;
  --text-dim: #94A3B8;
  --text-gray: #64748B;
  --success: #10B981;
  --success-bg: rgba(16, 185, 129, 0.1);
  --error: #EF4444;
  --error-bg: rgba(239, 68, 68, 0.1);
  
  --font-sans: 'Hanken Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  --radius: 0.5rem;       /* 8px */
  --radius-md: 0.75rem;   /* 12px */
  --radius-lg: 1rem;      /* 16px */
  --radius-full: 9999px;
  
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --transition-slow: all 0.6s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-navy);
  color: var(--text-light);
  font-family: var(--font-sans);
}

body {
  overflow-x: hidden;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Helper Utilities */
.text-center { text-align: center; }
.mono { font-family: var(--font-mono); }
.font-caps { font-family: var(--font-mono); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; }
.accent { color: var(--primary); }
.text-glow {
  text-shadow: 0 0 20px var(--primary-glow);
  color: var(--text-light);
}

/* Glowing Background Blobs */
.glow-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.blob {
  position: absolute;
  border-radius: var(--radius-full);
  filter: blur(140px);
  opacity: 0.2;
  mix-blend-mode: screen;
  animation: floatBlobs 20s infinite alternate ease-in-out;
}

.blob-1 {
  width: 400px;
  height: 400px;
  background-color: var(--primary);
  top: -10%;
  right: -5%;
}

.blob-2 {
  width: 500px;
  height: 500px;
  background-color: #5c5fea;
  bottom: -15%;
  left: -10%;
  animation-delay: -5s;
}

.blob-3 {
  width: 300px;
  height: 300px;
  background-color: #00d2ff;
  top: 40%;
  left: 45%;
  animation-delay: -10s;
}

@keyframes floatBlobs {
  0% {
    transform: translate(0, 0) scale(1);
  }
  100% {
    transform: translate(50px, 30px) scale(1.1);
  }
}

/* Typography elements */
h1, h2, h3, h4 {
  font-family: var(--font-sans);
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  border: none;
  min-height: 44px; /* Touch target safety */
}

.btn-primary {
  background-color: var(--primary);
  color: var(--text-light);
  box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--primary-glow);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-outline {
  background-color: transparent;
  color: var(--text-light);
  border: 1px solid var(--border-color);
}

.btn-outline:hover {
  background-color: rgba(29, 99, 255, 0.08);
  border-color: var(--primary);
  transform: translateY(-2px);
}

.btn-sm {
  font-size: 0.85rem;
  padding: 0.5rem 1rem;
  min-height: 38px;
}

.btn-block {
  width: 100%;
  display: flex;
}

/* Glassmorphism styling */
.glassmorphic {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 32px 0 rgba(0, 7, 20, 0.5);
  transition: var(--transition);
}

.glassmorphic:hover {
  border-color: var(--border-hover);
}

/* Navigation Bar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(5, 7, 20, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  height: 70px;
  display: flex;
  align-items: center;
}

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

.logo-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--text-light);
  font-weight: 700;
  font-size: 1.25rem;
}

.logo-img {
  height: 28px;
  object-fit: contain;
}

.logo-text {
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-dim);
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--text-light);
}

.mobile-nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.mobile-nav-toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--text-light);
  transition: var(--transition);
}

/* Hero Section */
.hero-section {
  padding: 140px 0 80px 0;
  min-height: 85vh;
  display: flex;
  align-items: center;
  position: relative;
}

.hero-container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 4rem;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: rgba(29, 99, 255, 0.15);
  border: 1px solid rgba(29, 99, 255, 0.3);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  margin-bottom: 1.5rem;
}

.badge-dot {
  width: 6px;
  height: 6px;
  background-color: #00d2ff;
  border-radius: 50%;
  animation: pulse 1.5s infinite alternate;
}

.badge-text {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: #c4c5d8;
}

@keyframes pulse {
  0% { opacity: 0.3; transform: scale(0.9); }
  100% { opacity: 1; transform: scale(1.2); }
}

.hero-title {
  font-size: 3rem;
  line-height: 1.15;
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-dim);
  margin-bottom: 2rem;
  max-width: 580px;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  margin-bottom: 3rem;
}

.hero-trust {
  width: 100%;
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
}

.trust-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-gray);
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
}

.trust-metrics {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.metric {
  font-size: 0.9rem;
  color: var(--text-dim);
}

.metric span {
  color: var(--text-light);
  font-weight: 700;
}

.divider {
  width: 1px;
  height: 14px;
  background-color: var(--border-color);
}

/* Hero Visual & Mockups */
.hero-visual {
  display: flex;
  justify-content: center;
}

.visual-mockup-wrapper {
  position: relative;
  width: 100%;
  max-width: 480px;
}

.visual-mockup-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 110%;
  height: 110%;
  background: radial-gradient(circle, rgba(29,99,255,0.15) 0%, rgba(5,7,20,0) 70%);
  z-index: -1;
  pointer-events: none;
}

.visual-mockup-container {
  position: relative;
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
  background-color: var(--bg-navy-dim);
  aspect-ratio: 16/10;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.app-ui-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  padding: 1rem;
}

.ui-header {
  display: flex;
  align-items: center;
  gap: 6px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
  margin-bottom: 1rem;
}

.ui-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--text-gray);
}

.ui-title {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-gray);
}

.ui-body {
  display: flex;
  flex: 1;
  gap: 1rem;
}

.ui-sidebar {
  width: 80px;
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.skeleton-line {
  height: 6px;
  background-color: var(--border-color);
  border-radius: 3px;
  width: 80%;
}

.skeleton-line.short { width: 50%; }

.ui-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.ui-row {
  display: flex;
  gap: 10px;
}

.skeleton-card {
  flex: 1;
  height: 60px;
  background-color: rgba(29, 99, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
}

.skeleton-chart {
  flex: 1;
  background-color: rgba(29, 99, 255, 0.02);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius);
}

.app-pill-overlay {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 500;
  white-space: nowrap;
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}

/* Sections Global */
.section-padding {
  padding: 100px 0;
}

.section-header {
  margin-bottom: 4rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.mono-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--primary);
  font-weight: 700;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
}

.section-title {
  font-size: 2.25rem;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.section-subtitle {
  color: var(--text-dim);
  max-width: 650px;
  font-size: 1.05rem;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
}

.feature-card {
  padding: 2.25rem 2rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.feature-icon-wrapper {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  background-color: rgba(29, 99, 255, 0.1);
  border: 1px solid rgba(29, 99, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--primary);
}

.feature-card-title {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  font-weight: 600;
}

.feature-card-text {
  color: var(--text-dim);
  font-size: 0.95rem;
  line-height: 1.5;
}

/* Showcase Section */
.showcase-section {
  position: relative;
}

.showcase-tab-system {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.showcase-tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
}

.tab-btn {
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 1rem;
  text-align: left;
  border-radius: var(--radius);
  transition: var(--transition);
}

.tab-btn:hover {
  background-color: rgba(29, 99, 255, 0.05);
}

.tab-btn.active {
  background-color: rgba(29, 99, 255, 0.08);
  border: 1px solid var(--border-color);
}

.tab-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-gray);
  margin-bottom: 4px;
}

.tab-btn.active .tab-num {
  color: var(--primary);
}

.tab-title {
  font-family: var(--font-sans);
  color: var(--text-dim);
  font-weight: 600;
  font-size: 1.05rem;
}

.tab-btn.active .tab-title {
  color: var(--text-light);
}

.showcase-display {
  padding: 2.5rem;
}

.showcase-pane {
  display: none;
  animation: fadeIn 0.5s ease;
}

.showcase-pane.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.pane-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.pane-image-wrapper {
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  background-color: var(--bg-navy-dim);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pane-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
}

.pane-info {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.pane-badge {
  font-size: 0.7rem;
  color: var(--primary);
  border: 1px solid rgba(29, 99, 255, 0.3);
  background-color: rgba(29, 99, 255, 0.08);
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-full);
  margin-bottom: 1.25rem;
}

.pane-title {
  font-size: 1.75rem;
  line-height: 1.25;
  margin-bottom: 1rem;
}

.pane-description {
  color: var(--text-dim);
  margin-bottom: 1.5rem;
  font-size: 1rem;
}

.pane-features-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.pane-features-list li {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  font-size: 0.95rem;
  color: var(--text-dim);
}

.pane-features-list li strong {
  color: var(--text-light);
}

.bullet-icon {
  color: var(--primary);
  font-weight: bold;
}

/* Comparison Section */
.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  margin-top: 2rem;
}

.comparison-card {
  padding: 3rem 2.5rem;
  display: flex;
  flex-direction: column;
  position: relative;
}

.comparison-card.highlighted {
  border-color: var(--primary);
  box-shadow: 0 10px 40px rgba(29, 99, 255, 0.15);
}

.card-accent-badge {
  position: absolute;
  top: -12px;
  right: 2.5rem;
  background-color: var(--primary);
  color: var(--text-light);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
}

.comparison-card-title {
  font-size: 1.5rem;
  margin-bottom: 2rem;
}

.comparison-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.comparison-list li {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  font-size: 0.95rem;
  color: var(--text-dim);
}

.comp-icon {
  font-size: 1rem;
  flex-shrink: 0;
}

.comp-icon.red { color: var(--error); }
.comp-icon.green { color: var(--success); }

/* Waitlist Form Section */
.waitlist-section {
  display: flex;
  justify-content: center;
  background-color: var(--bg-navy-dim);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.waitlist-container {
  display: flex;
  justify-content: center;
}

.waitlist-card {
  width: 100%;
  max-width: 680px;
  padding: 3.5rem 3rem;
}

.waitlist-card-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.waitlist-title {
  font-size: 2.25rem;
  margin-bottom: 1rem;
}

.waitlist-subtitle {
  color: var(--text-dim);
  margin-bottom: 2.5rem;
  max-width: 500px;
  font-size: 1.05rem;
}

#waitlist-form {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  text-align: left;
}

.form-group {
  display: flex;
  flex-direction: column;
  width: 100%;
}

.form-group label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-light);
  margin-bottom: 4px;
}

.hint {
  font-size: 0.8rem;
  color: var(--text-gray);
  margin-bottom: 0.5rem;
}

.input-wrapper {
  position: relative;
  width: 100%;
}

.form-group input {
  width: 100%;
  background-color: rgba(5, 7, 20, 0.8);
  border: 1px solid var(--border-color);
  color: var(--text-light);
  padding: 0.85rem 1rem;
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 1rem;
  min-height: 44px;
  outline: none;
  transition: var(--transition);
  z-index: 2;
  position: relative;
}

/* User interaction validation styles */
.form-group input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(29, 99, 255, 0.2);
}

.form-group input:user-invalid {
  border-color: var(--error);
  background-color: var(--error-bg);
}

.form-group input:user-valid {
  border-color: var(--success);
  background-color: var(--success-bg);
}

/* Error Message styling */
.error-msg {
  display: none;
  color: var(--error);
  font-size: 0.85rem;
  margin-top: 0.5rem;
  font-weight: 500;
}

/* Reveal error based on user-invalid state */
.form-group input:user-invalid + .input-glow + .error-msg,
.form-group input:user-invalid ~ .error-msg {
  display: block;
}

/* Fallback helper classes if :user-invalid isn't supported */
.form-group input.user-invalid-fallback {
  border-color: var(--error);
  background-color: var(--error-bg);
}

.form-group input.user-invalid-fallback ~ .error-msg {
  display: block;
}

.form-group input.user-valid-fallback {
  border-color: var(--success);
  background-color: var(--success-bg);
}

.form-disclaimer {
  font-size: 0.8rem;
  color: var(--text-gray);
  margin-top: 1.25rem;
}

/* Loading/Submit State spinner */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: var(--text-light);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-left: 0.5rem;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Footer Section */
.footer {
  padding: 5rem 0 2rem 0;
  border-top: 1px solid var(--border-color);
  background-color: #03040e;
}

.footer-container {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 4rem;
  margin-bottom: 4rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1rem;
}

.footer-desc {
  color: var(--text-dim);
  font-size: 0.95rem;
  max-width: 420px;
}

.footer-links {
  display: flex;
  justify-content: flex-end;
  gap: 6rem;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-header {
  color: var(--text-light);
  margin-bottom: 0.5rem;
}

.footer-col a {
  text-decoration: none;
  color: var(--text-dim);
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-col a:hover {
  color: var(--text-light);
}

.footer-bottom {
  border-top: 1px solid rgba(29, 99, 255, 0.08);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-gray);
  flex-wrap: wrap;
  gap: 1rem;
}

/* Modal Dialog Success styling */
.modal-dialog {
  margin: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 3rem 2.5rem;
  max-width: 480px;
  background-color: var(--bg-navy-dim);
  color: var(--text-light);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.8);
  outline: none;
  animation: modalScaleUp 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.modal-dialog::backdrop {
  background: rgba(3, 4, 11, 0.8);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  animation: backdropFadeIn 0.3s ease forwards;
}

/* Modal content styling combining glassmorphism rule safe for browsers */
.modal-dialog:is(:popover-open, .\:popover-open, [open]) {
  display: block;
}

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

.success-icon-wrapper {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background-color: rgba(29, 99, 255, 0.08);
  border: 2px solid var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  box-shadow: 0 0 24px var(--primary-glow);
}

.modal-title {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
  font-weight: 700;
}

.modal-message {
  color: var(--text-dim);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 2rem;
}

.modal-meta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  width: 100%;
  background-color: rgba(29, 99, 255, 0.04);
  border: 1px solid var(--border-color);
  padding: 1rem;
  border-radius: var(--radius);
  margin-bottom: 2rem;
  text-align: left;
}

.meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.meta-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-gray);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.meta-value {
  font-weight: 700;
  font-size: 0.85rem;
}

@keyframes modalScaleUp {
  from {
    transform: scale(0.95);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes backdropFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Responsive Breakpoints */
@media (max-width: 1024px) {
  .hero-container {
    gap: 2rem;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .pane-grid {
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  .navbar {
    height: 60px;
  }
  
  .mobile-nav-toggle {
    display: flex;
  }
  
  .nav-links {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    width: 100%;
    background-color: var(--bg-navy-dim);
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    padding: 2rem 1.5rem;
    gap: 1.5rem;
    z-index: 99;
  }
  
  .nav-links.mobile-open {
    display: flex;
  }
  
  .nav-actions {
    display: none; /* Hide standard nav btn on tablet/mobile and keep layout clean */
  }
  
  .hero-container {
    grid-template-columns: 1fr;
    gap: 3rem;
    padding-top: 40px;
    text-align: center;
  }
  
  .hero-content {
    align-items: center;
  }
  
  .hero-actions {
    justify-content: center;
    width: 100%;
  }
  
  .trust-metrics {
    justify-content: center;
  }
  
  .hero-visual {
    order: -1; /* visual first on mobile */
  }
  
  .showcase-tabs {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .pane-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .pane-image-wrapper {
    max-width: 500px;
    margin: 0 auto;
    width: 100%;
  }
  
  .comparison-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-container {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .footer-links {
    justify-content: flex-start;
    gap: 4rem;
  }
}

@media (max-width: 480px) {
  .section-title {
    font-size: 1.75rem;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-actions {
    flex-direction: column;
  }
  
  .hero-actions .btn {
    width: 100%;
  }
  
  .showcase-tabs {
    grid-template-columns: 1fr;
  }
  
  .showcase-display {
    padding: 1.25rem;
  }
  
  .waitlist-card {
    padding: 2.5rem 1.5rem;
  }
  
  .modal-dialog {
    padding: 2rem 1.5rem;
  }
  
  .modal-meta-grid {
    grid-template-columns: 1fr;
  }
}