@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Outfit:wght@500;600;700;800&display=swap');

/* --- Design Tokens --- */
:root {
  --color-primary: #FF6B00;
  --color-primary-hover: #E55A00;
  --color-primary-light: rgba(255, 107, 0, 0.1);
  --color-dark: #09090b;
  --color-dark-light: #52525b;
  --color-light: #f3f4f6;
  --color-gray-50: #e5e7eb;
  --color-gray-100: rgba(0, 0, 0, 0.05);
  --color-gray-200: rgba(0, 0, 0, 0.08);
  --color-gray-300: rgba(0, 0, 0, 0.15);
  --color-success: #10B981;
  --color-success-light: rgba(16, 185, 129, 0.1);
  
  --surface-dark: rgba(255, 255, 255, 0.55);
  --border-dark: rgba(255, 255, 255, 0.7);
  --text-muted: #52525b;
  
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  color: var(--color-dark);
  background-color: var(--color-light);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-dark);
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-fast);
}

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

input, button, select, textarea {
  font-family: inherit;
  font-size: inherit;
  outline: none;
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
input[type="password"],
select,
textarea {
  background-color: rgba(255, 255, 255, 0.7) !important;
  color: var(--color-dark) !important;
  border-color: rgba(0, 0, 0, 0.08) !important;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
input[type="number"]:focus,
input[type="password"]:focus,
select:focus,
textarea:focus {
  border-color: var(--color-primary) !important;
  box-shadow: 0 0 0 3px rgba(255, 107, 0, 0.15) !important;
}

/* --- Utilities --- */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-padding {
  padding: 96px 0;
}

@media (max-width: 768px) {
  .section-padding {
    padding: 64px 0;
  }
}

.text-center { text-align: center; }
.text-primary { color: var(--color-primary); }

.grid {
  display: grid;
  gap: 32px;
}

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

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

.flex {
  display: flex;
  gap: 16px;
  align-items: center;
}

.flex-center {
  justify-content: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius-full);
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition-normal);
  font-size: 1rem;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.125rem;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-light);
  box-shadow: 0 4px 14px 0 rgba(255, 107, 0, 0.3);
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px 0 rgba(255, 107, 0, 0.4);
}

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

.btn-secondary {
  background-color: var(--color-light);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-secondary:hover {
  background-color: var(--color-primary-light);
  transform: translateY(-2px);
}

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

.btn-dark {
  background-color: var(--color-dark);
  color: var(--color-light);
}

.btn-dark:hover {
  background-color: var(--color-dark-light);
  transform: translateY(-2px);
}

/* --- Cards --- */
.card {
  background-color: var(--surface-dark);
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid var(--border-dark);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.04);
  transition: all var(--transition-normal);
}

.card-hover:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
  border-color: rgba(255, 107, 0, 0.3);
}

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 24px;
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: 12px;
  color: var(--color-dark);
}

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

/* --- Premium Cards (TalkNote UI Style) --- */
.premium-card {
  background-color: var(--surface-dark);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  border: 1.5px solid var(--border-dark);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.04);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  gap: 16px;
  text-align: left;
}

.premium-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 107, 0, 0.3);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
}

.premium-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
}

.premium-card-profile {
  display: flex;
  align-items: center;
  gap: 12px;
}

.profile-avatar-icon {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.profile-avatar-icon svg {
  width: 20px;
  height: 20px;
}

.profile-meta {
  display: flex;
  flex-direction: column;
}

.profile-name {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-dark);
  font-family: var(--font-heading);
}

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

.premium-card-badge-menu {
  display: flex;
  align-items: center;
  gap: 10px;
}

.premium-badge {
  background-color: rgba(255, 107, 0, 0.12);
  color: var(--color-primary);
  font-size: 0.65rem;
  font-weight: 800;
  padding: 4px 8px;
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
}

.premium-card .three-dots {
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.9rem;
  letter-spacing: 1px;
  transition: color var(--transition-fast);
}

.premium-card .three-dots:hover {
  color: var(--color-dark);
}

.premium-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 2px;
  letter-spacing: -0.3px;
}

.premium-card-text {
  color: var(--text-muted);
  font-size: 0.925rem;
  line-height: 1.6;
  margin: 0;
}

.premium-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-dark);
  padding-top: 14px;
  margin-top: 4px;
}

.footer-action {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  font-size: 0.825rem;
  font-weight: 600;
  cursor: pointer;
  transition: color var(--transition-fast);
  background: transparent;
  border: none;
}

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

.footer-action svg {
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.footer-action:hover svg {
  opacity: 1;
}

/* --- Header / Navigation --- */
header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1.5px solid var(--border-dark);
  transition: all var(--transition-normal);
}

header.scrolled {
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.05);
  background-color: rgba(255, 255, 255, 0.85);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 96px;
}

.logo-link {
  display: flex;
  align-items: center;
}

.logo-img {
  height: 76px;
  width: auto;
  object-fit: contain;
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 32px;
}

.nav-link {
  font-family: var(--font-heading);
  font-weight: 500;
  color: var(--color-dark-light);
  position: relative;
  padding: 8px 0;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-fast);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-link.active {
  color: var(--color-primary);
}

.nav-link.active::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-actions-mobile {
  display: none;
}

/* Hamburger menu button */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-dark);
  border-radius: 2px;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

@media (max-width: 1024px) {
  .hamburger {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: 96px;
    left: 0;
    width: 100%;
    height: calc(100vh - 96px);
    background-color: var(--color-light);
    flex-direction: column;
    padding: 40px 24px;
    gap: 24px;
    align-items: stretch;
    transform: translateY(-120%);
    transition: transform var(--transition-slow) cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: var(--shadow-lg);
    border-top: 1px solid var(--color-gray-100);
    overflow-y: auto;
  }
  
  .nav-menu.open {
    transform: translateY(0);
  }
  
  .nav-link {
    font-size: 1.25rem;
    display: block;
    border-bottom: 1px solid var(--color-gray-100);
    padding: 12px 0;
  }
  
  .nav-link::after {
    display: none;
  }
  
  .header-actions {
    display: none;
  }
  
  .header-actions-mobile {
    display: block;
    margin-top: 24px;
  }
}

/* Hamburger transforms */
.hamburger.open span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
}

.hamburger.open span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* --- Hero Section --- */
.hero {
  position: relative;
  background: radial-gradient(circle at 80% 20%, #FFF5ED 0%, #FFFFFF 60%);
  padding: 80px 0;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: radial-gradient(rgba(255, 107, 0, 0.05) 1.5px, transparent 1.5px);
  background-size: 24px 24px;
  pointer-events: none;
  z-index: 1;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 48px;
}

.hero-content {
  position: relative;
  z-index: 10;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.hero-title span {
  color: var(--color-primary);
  position: relative;
  display: inline-block;
}

.hero-desc {
  font-size: 1.25rem;
  color: var(--color-dark-light);
  margin-bottom: 36px;
  max-width: 580px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.hero-image-wrapper {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image {
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  z-index: 2;
  transition: transform var(--transition-slow);
}

.hero-image:hover {
  transform: scale(1.02);
}

.hero-bg-accent {
  position: absolute;
  width: 400px;
  height: 400px;
  background-color: var(--color-primary-light);
  border-radius: 50%;
  filter: blur(80px);
  z-index: 1;
  top: -50px;
  right: -50px;
  opacity: 0.6;
}

@media (max-width: 1024px) {
  .hero-title {
    font-size: 2.75rem;
  }
}

@media (max-width: 768px) {
  .hero {
    padding: 60px 0;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }
  .hero-desc {
    margin: 0 auto 32px;
  }
  .hero-cta {
    justify-content: center;
  }
  .hero-image {
    max-width: 90%;
  }
  .phone-frame {
    transform: rotate(0deg) !important;
    width: 260px;
  }
}

/* --- Section Headers --- */
.section-header {
  max-width: 640px;
  margin: 0 auto 56px;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.125rem;
  color: var(--color-dark-light);
}

/* --- How it Works Step --- */
.step-container {
  position: relative;
}

.step-card {
  position: relative;
  text-align: center;
  padding: 24px;
}

.step-number {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: var(--color-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
  margin: 0 auto 20px;
  box-shadow: 0 4px 10px rgba(255, 107, 0, 0.3);
  position: relative;
  z-index: 2;
}

.step-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.step-desc {
  color: var(--color-dark-light);
  font-size: 0.95rem;
}

/* --- Trust / Safety Section --- */
.trust-section {
  background-color: var(--color-gray-50);
}

.trust-card {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  padding: 24px;
  background-color: var(--color-light);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-gray-100);
}

.trust-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: var(--color-success-light);
  color: var(--color-success);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.trust-title {
  font-size: 1.125rem;
  margin-bottom: 6px;
}

.trust-desc {
  font-size: 0.9rem;
  color: var(--color-dark-light);
}

@media (max-width: 768px) {
  .trust-card {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}

.cta-banner {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.6) 0%, rgba(255, 255, 255, 0.45) 100%);
  border: 1.5px solid rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  color: var(--color-dark);
  border-radius: var(--radius-xl);
  padding: 64px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.04);
}

.cta-banner-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
  gap: 48px;
  position: relative;
  z-index: 2;
}

.cta-banner h2 {
  color: var(--color-dark);
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.cta-banner p {
  color: var(--color-dark-light);
  font-size: 1.125rem;
  margin-bottom: 32px;
  max-width: 580px;
}

.app-badges {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.app-badge {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background-color: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  padding: 10px 20px;
  color: var(--color-light);
  transition: all var(--transition-normal);
}

.app-badge:hover {
  background-color: var(--color-light);
  color: var(--color-dark);
  border-color: var(--color-light);
  transform: translateY(-2px);
}

.app-badge-icon {
  font-size: 1.5rem;
}

.app-badge-text {
  text-align: left;
}

.app-badge-sub {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0.7;
}

.app-badge-title {
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.2;
}

.cta-banner-image {
  max-height: 380px;
  margin: 0 auto;
  filter: drop-shadow(0 20px 30px rgba(0, 0, 0, 0.3));
}

@media (max-width: 1024px) {
  .cta-banner {
    padding: 48px;
  }
  .cta-banner h2 {
    font-size: 2rem;
  }
}

@media (max-width: 768px) {
  .cta-banner-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 32px;
  }
  .cta-banner p {
    margin: 0 auto 32px;
  }
  .app-badges {
    justify-content: center;
  }
  .cta-banner-image {
    max-height: 280px;
  }
}

/* --- Footer --- */
footer {
  background-color: var(--color-gray-50);
  border-top: 1px solid var(--color-gray-200);
  padding: 80px 0 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 64px;
}

.footer-brand p {
  color: var(--color-dark-light);
  margin: 20px 0 24px;
  font-size: 0.95rem;
}

.social-links {
  display: flex;
  gap: 12px;
}

.social-link {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--color-gray-100);
  color: var(--color-dark-light);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.social-link:hover {
  background-color: var(--color-primary);
  color: var(--color-light);
  transform: translateY(-2px);
}

.footer-col h4 {
  font-size: 1rem;
  margin-bottom: 24px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-dark);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-link {
  color: var(--color-dark-light);
  font-size: 0.95rem;
}

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

.footer-ecosystem-bar {
  border-top: 1px solid var(--color-gray-200);
  border-bottom: 1px solid var(--color-gray-200);
  padding: 24px 0;
  margin-bottom: 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.ecosystem-title {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-dark);
}

.ecosystem-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.ecosystem-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--color-dark-light);
}

.ecosystem-link:hover {
  color: var(--color-primary);
}

.ecosystem-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-primary);
  display: inline-block;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--color-dark-light);
  flex-wrap: wrap;
  gap: 16px;
}

.footer-legal-links {
  display: flex;
  gap: 24px;
}

@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  footer {
    padding: 60px 0 30px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    margin-bottom: 48px;
  }
  .footer-ecosystem-bar {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer-bottom {
    flex-direction: column-reverse;
    align-items: center;
    text-align: center;
  }
}

/* --- Entrance Fade Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* --- Space Black iPhone Mockup Frames --- */
.phone-frame {
  position: relative;
  width: 280px;
  margin: 0 auto;
  display: block;
  transition: transform var(--transition-slow);
  z-index: 10;
}

.phone-frame:hover {
  transform: scale(1.04) rotate(0deg) !important;
}

/* Outer phone body with bezel and titanium rim */
.phone-screen {
  position: relative;
  width: 100%;
  border: 12px solid #09090b; /* space black phone bezel */
  border-radius: 42px;
  background-color: #000;
  box-shadow: 
    0 0 0 2.5px #4a4a4a, /* titanium outer rim shadow */
    0 25px 50px -12px rgba(0, 0, 0, 0.35);
  display: block;
  z-index: 5;
  transition: box-shadow var(--transition-slow);
}

.phone-frame:hover .phone-screen {
  box-shadow: 
    0 0 0 2.5px #FF6B00, /* glow titanium outer rim on hover */
    0 30px 60px -10px rgba(255, 107, 0, 0.25), 
    0 15px 30px -10px rgba(0, 0, 0, 0.2);
}

/* Inner viewport clipping screen content */
.phone-screen-inner {
  position: relative;
  width: 100%;
  aspect-ratio: 471 / 1024; /* exact aspect ratio of app-screenshot.png */
  border-radius: 30px; /* curved screen edges */
  overflow: hidden;
  background-color: #000;
  display: block;
}

.phone-screenshot {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Physical Left side buttons (Action Button + Volume keys) */
.phone-frame::before {
  content: '';
  position: absolute;
  top: 75px;
  left: -3px; /* sits on outer titanium rim */
  width: 3px;
  height: 18px; /* Action key */
  background: #4a4a4a;
  border-radius: 3px 0 0 3px;
  box-shadow: 
    0 28px 0 0 #4a4a4a,  /* Volume Up key */
    0 56px 0 0 #4a4a4a;  /* Volume Down key */
  z-index: 1;
  transition: background var(--transition-slow);
}

/* Physical Right side button (Power button) */
.phone-frame::after {
  content: '';
  position: absolute;
  top: 115px;
  right: -3px;
  width: 3px;
  height: 35px; /* Power key */
  background: #4a4a4a;
  border-radius: 0 3px 3px 0;
  z-index: 1;
  transition: background var(--transition-slow);
}

.phone-frame:hover::before,
.phone-frame:hover::after {
  background: #FF6B00; /* color-match buttons on hover */
}

/* --- Motorbike Loader Animations --- */
@keyframes moveRoad {
  0% { transform: translateX(0); }
  100% { transform: translateX(-16px); }
}
@keyframes bikeBounce {
  0% { transform: translate(-50%, 0); }
  100% { transform: translate(-50%, -3px); }
}
@keyframes textPulse {
  0% { opacity: 0.6; }
  100% { opacity: 1; }
}