/* Base styles */
:root {
  --navy: #172b4d;
  --navy-700: #0f1e38;
  --navy-800: #0c182e;
  --navy-900: #080f1d;
  --neon: #39FF14;
  --light-gray: #f0f4f8;
  --white: #ffffff;
  --black: #000000;
  --red: #ff4c4c;
  --yellow: #ffb700;
  --blue: #4a8cff;
  --green: #36b37e;
  --transition: all 0.3s ease;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
  --border-radius: 0.5rem;
  --border-radius-lg: 1rem;
}

/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
    Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  line-height: 1.6;
  color: var(--navy);
  background-color: var(--white);
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Poppins', sans-serif;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

p {
  margin-bottom: 1rem;
}

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

ul {
  list-style: none;
}

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

button, input, textarea {
  font-family: inherit;
  font-size: inherit;
}

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

section {
  padding: 5rem 0;
}

/* Typography utilities */
.text-neon {
  color: var(--neon);
}

.neon-glow {
  text-shadow: 0 0 10px rgba(57, 255, 20, 0.7);
}

/* Header */
.header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  transition: box-shadow 0.3s ease;
}

.header.scrolled {
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.logo {
  display: flex;
  align-items: center;
  font-weight: 700;
  font-size: 1.5rem;
}

.logo-icon {
  margin-right: 0.5rem;
}

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

.main-nav a {
  font-weight: 500;
  position: relative;
}

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

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--neon);
  transition: width 0.3s ease;
}

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

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 30px;
  height: 20px;
  position: relative;
}

.mobile-menu-btn span {
  display: block;
  height: 2px;
  width: 100%;
  background-color: var(--navy);
  position: absolute;
  transition: var(--transition);
}

.mobile-menu-btn span:nth-child(1) {
  top: 0;
}

.mobile-menu-btn span:nth-child(2) {
  top: 50%;
  transform: translateY(-50%);
}

.mobile-menu-btn span:nth-child(3) {
  bottom: 0;
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: rotate(45deg);
  top: 9px;
}

.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg);
  bottom: 9px;
}

.mobile-menu {
  display: none;
  padding: 1rem 0;
  background-color: var(--white);
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.5s ease;
}

.mobile-menu.active {
  max-height: 300px;
}

.mobile-menu ul {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.mobile-menu a {
  display: block;
  padding: 0.5rem 0;
  font-weight: 500;
}

.mobile-menu a:hover {
  color: var(--neon);
}

/* Hero Section */
.hero {
  position: relative;
  background-color: var(--navy);
  color: var(--white);
  min-height: 90vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 20% 80%, rgba(57, 255, 20, 0.1), transparent);
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-text h2 {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

.hero-text p {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 2rem;
  max-width: 30rem;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: 2rem;
  font-weight: 600;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

.btn-primary {
  background-color: var(--neon);
  color: var(--navy);
}

.btn-primary:hover {
  transform: scale(1.05);
  box-shadow: 0 0 15px rgba(57, 255, 20, 0.7);
}

.btn-outline {
  background-color: transparent;
  color: var(--white);
  border: 2px solid var(--white);
}

.btn-outline:hover {
  background-color: var(--white);
  color: var(--navy);
}

.btn-navy {
  background-color: var(--navy);
  color: var(--white);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-navy:hover {
  background-color: var(--navy-700);
  box-shadow: 0 0 15px rgba(57, 255, 20, 0.4);
}

.hero-image {
  position: relative;
}

.image-container {
  position: relative;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  z-index: 1;
}

.overlay-gradient {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60%;
  background: linear-gradient(to top, var(--navy), transparent);
  z-index: 2;
}

.status-box {
  position: absolute;
  bottom: 1.5rem;
  left: 1.5rem;
  right: 1.5rem;
  background-color: rgba(23, 43, 77, 0.8);
  backdrop-filter: blur(10px);
  border-radius: var(--border-radius);
  padding: 1rem;
  border: 1px solid rgba(57, 255, 20, 0.2);
  z-index: 3;
}

.status-indicators {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.indicator {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
}

.red {
  background-color: var(--red);
}

.yellow {
  background-color: var(--yellow);
}

.green {
  background-color: var(--neon);
}

.status-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.status-label {
  color: var(--neon);
  font-weight: 500;
  font-size: 0.875rem;
}

.status-value {
  color: var(--white);
  font-weight: 600;
  font-size: 1.25rem;
}

.status-time {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--white);
}

.glow-effect {
  position: absolute;
  bottom: -1.5rem;
  right: -1.5rem;
  width: 16rem;
  height: 16rem;
  background-color: rgba(57, 255, 20, 0.1);
  border-radius: 50%;
  filter: blur(3rem);
  z-index: 0;
}

/* Float Animation */
.float-animation {
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

/* Problem Section */
.problem {
  background-color: var(--light-gray);
}

.section-header {
  text-align: center;
  max-width: 48rem;
  margin: 0 auto 4rem;
}

.section-header h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.problem-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 2rem;
}

.card {
  background-color: var(--white);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.card img {
  width: 100%;
  height: 12rem;
  object-fit: cover;
  border-radius: calc(var(--border-radius) - 0.25rem);
  margin-bottom: 1.5rem;
}

.card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.quote {
  margin-top: 4rem;
  text-align: center;
  font-size: 1.5rem;
  font-style: italic;
  font-weight: 500;
  color: var(--navy-700);
}

/* Solution Section */
.solution {
  background-color: var(--navy);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.solution::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  background: radial-gradient(circle at 70% 30%, rgba(57, 255, 20, 0.1), transparent);
}

.solution-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  margin-top: 4rem;
  position: relative;
  z-index: 1;
}

.elevator-display {
  position: relative;
}

.elevator-interface {
  background: linear-gradient(to bottom right, var(--navy-800), var(--navy-900));
  border-radius: var(--border-radius);
  border: 1px solid var(--navy-700);
  padding: 2rem;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.elevator-shafts {
  display: flex;
  justify-content: space-around;
  align-items: flex-end;
  margin-bottom: 2rem;
}

.shaft {
  width: 3rem;
  height: 12rem;
  background-color: rgba(0, 0, 0, 0.1);
  border-radius: 0.5rem;
  position: relative;
  box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.2);
}

.elevator {
  width: 2.5rem;
  height: 2.5rem;
  background: linear-gradient(135deg, var(--neon), #2dd36f);
  border-radius: 0.25rem;
  position: absolute;
  left: 0.25rem;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 0 0 10px rgba(57, 255, 20, 0.5);
  transition: top 1s ease-in-out;
}

.elevator span {
  color: var(--white);
  font-weight: bold;
}

.elevator-a {
  top: 9rem; /* Floor 1 */
}

.elevator-b {
  top: 3rem; /* Floor 3 */
}

.elevator-c {
  top: 6rem; /* Floor 2 */
}

.floor-label {
  position: absolute;
  width: 100%;
  text-align: center;
  font-size: 0.75rem;
  color: var(--white);
}

.floor-label.bottom {
  bottom: 0.25rem;
}

.floor-label.middle {
  bottom: 33.33%;
}

.floor-label.top {
  top: 0.25rem;
}

.status-panel {
  background-color: var(--navy-700);
  border-radius: var(--border-radius);
  padding: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.recommendation .label {
  color: var(--neon);
  font-weight: bold;
  margin-right: 0.5rem;
}

.recommendation .value {
  color: var(--white);
  font-weight: 500;
}

.time {
  display: flex;
  align-items: center;
  color: var(--white);
  font-size: 0.875rem;
}

.time svg {
  margin-right: 0.25rem;
}

.elevator-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.option {
  background-color: rgba(0, 0, 0, 0.2);
  padding: 0.75rem;
  border-radius: var(--border-radius);
  text-align: center;
}

.option.highlighted {
  background-color: rgba(57, 255, 20, 0.2);
  border: 1px solid rgba(57, 255, 20, 0.3);
}

.option-name {
  font-size: 0.875rem;
  color: var(--white);
  opacity: 0.8;
}

.option.highlighted .option-name {
  color: var(--neon);
}

.option-time {
  font-size: 1.125rem;
  font-weight: bold;
  color: var(--white);
}

.option.highlighted .option-time {
  color: var(--neon);
}

.window-controls {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  display: flex;
  gap: 0.5rem;
}

.control {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
}

.pulse {
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.features-list h3 {
  font-size: 2rem;
  margin-bottom: 2rem;
}

.features-list ul {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.features-list li {
  display: flex;
  align-items: flex-start;
}

.feature-icon {
  background-color: var(--neon);
  border-radius: 50%;
  padding: 0.5rem;
  color: var(--navy);
  margin-right: 1rem;
  min-width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.features-list h4 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.features-list p {
  color: var(--light-gray);
}

/* App Section */
.app-section {
  margin-top: 6rem;
}

.app-features-container {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 2.5rem;
  align-items: center;
}

.app-features {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.app-feature {
  background-color: rgba(23, 43, 77, 0.6);
  backdrop-filter: blur(10px);
  border-radius: var(--border-radius);
  padding: 1.25rem;
  border: 1px solid var(--navy-700);
  display: flex;
  align-items: flex-start;
}

.app-feature h4 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.app-feature p {
  color: var(--light-gray);
  font-size: 0.9375rem;
}

/* Phone Mockup */
.phone-mockup-container {
  display: flex;
  justify-content: center;
}

.phone-mockup {
  border: 8px solid #1a1a1a;
  border-radius: 2rem;
  background-color: #0a0a0a;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  position: relative;
  overflow: hidden;
  width: 280px;
  height: 580px;
}

.phone-mockup::before {
  content: "";
  position: absolute;
  top: 0;
  width: 40%;
  height: 1.5rem;
  background-color: #1a1a1a;
  border-bottom-left-radius: 0.75rem;
  border-bottom-right-radius: 0.75rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
}

.phone-screen {
  background: linear-gradient(165deg, var(--navy), var(--navy-900));
  height: 100%;
  border-radius: 1.5rem;
  overflow: hidden;
  position: relative;
}

.app-ui {
  height: 100%;
  padding: 1rem 0.75rem;
  display: flex;
  flex-direction: column;
}

/* App Components */
.app-status-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.time {
  color: var(--white);
  font-size: 0.75rem;
}

.status-icons {
  display: flex;
  gap: 0.5rem;
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.app-title h5 {
  color: var(--white);
  font-size: 1.125rem;
  margin-bottom: 0.125rem;
}

.app-title p {
  color: #a0aec0;
  font-size: 0.75rem;
  margin-bottom: 0;
}

.user-avatar {
  width: 2.5rem;
  height: 2.5rem;
  background-color: var(--navy-700);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.user-avatar span {
  color: var(--neon);
  font-size: 0.75rem;
  font-weight: bold;
}

.destination-selector {
  background-color: rgba(8, 15, 29, 0.8);
  border-radius: var(--border-radius);
  padding: 0.75rem;
  margin-bottom: 1rem;
}

.from-location, .to-location {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.from-location {
  margin-bottom: 0.5rem;
}

.location-icon {
  width: 1.5rem;
  height: 1.5rem;
  background-color: rgba(57, 255, 20, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 0.5rem;
}

.location-icon svg {
  color: var(--neon);
}

.from-location span, .to-location span {
  color: var(--white);
  font-size: 0.875rem;
}

.tag, .floors {
  font-size: 0.75rem;
}

.tag {
  color: var(--neon);
}

.floors {
  color: #a0aec0;
}

.building-status {
  background-color: rgba(23, 43, 77, 0.6);
  border-radius: var(--border-radius);
  padding: 0.75rem;
  margin-bottom: 1rem;
}

.status-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.status-header h5 {
  color: var(--white);
  font-size: 0.875rem;
  margin-bottom: 0;
}

.live-indicator {
  display: flex;
  align-items: center;
  background-color: rgba(57, 255, 20, 0.2);
  border-radius: 999px;
  padding: 0.125rem 0.5rem;
}

.live-indicator span {
  color: var(--neon);
  font-size: 0.75rem;
}

.pulse-dot {
  width: 0.5rem;
  height: 0.5rem;
  background-color: var(--neon);
  border-radius: 50%;
  margin-right: 0.25rem;
  animation: pulse 2s infinite;
}

.status-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.metric {
  text-align: center;
}

.metric-label {
  display: flex;
  justify-content: center;
  align-items: center;
  color: #a0aec0;
  font-size: 0.75rem;
  margin-bottom: 0.25rem;
}

.metric-label svg {
  margin-right: 0.25rem;
}

.metric p {
  color: var(--white);
  font-size: 1.25rem;
  font-weight: bold;
  margin-bottom: 0;
}

.app-tabs {
  display: flex;
  background-color: rgba(8, 15, 29, 0.5);
  border-radius: var(--border-radius);
  margin-bottom: 0.75rem;
  padding: 0.25rem;
}

.tab {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0.5rem;
  border-radius: calc(var(--border-radius) - 0.25rem);
  font-size: 0.75rem;
  font-weight: 500;
  background: none;
  border: none;
  cursor: pointer;
  color: #a0aec0;
}

.tab svg {
  margin-right: 0.5rem;
}

.tab.active {
  background-color: var(--neon);
  color: var(--navy);
}

.tab-content {
  background-color: rgba(23, 43, 77, 0.6);
  border-radius: var(--border-radius);
  padding: 0.75rem;
  flex: 1;
  overflow-y: auto;
  margin-bottom: 0.75rem;
}

.tab-pane {
  display: none;
}

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

.tab-pane h5 {
  color: var(--white);
  font-size: 0.875rem;
  margin-bottom: 0.75rem;
}

.best-option {
  background: linear-gradient(to right, rgba(57, 255, 20, 0.2), transparent);
  border: 1px solid rgba(57, 255, 20, 0.3);
  border-radius: var(--border-radius);
  padding: 0.75rem;
  margin-bottom: 1.5rem;
  position: relative;
}

.tag-recommended, .tag-fastest {
  position: absolute;
  top: 0;
  right: 0;
  background-color: var(--neon);
  color: var(--navy);
  font-size: 0.75rem;
  font-weight: bold;
  padding: 0.125rem 0.5rem;
  border-bottom-left-radius: var(--border-radius);
  border-top-right-radius: var(--border-radius);
  display: flex;
  align-items: center;
}

.tag-fastest {
  background-color: var(--blue);
  color: var(--white);
}

.tag-recommended svg, .tag-fastest svg {
  margin-right: 0.25rem;
}

.option-main {
  display: flex;
  align-items: center;
  margin-bottom: 0.5rem;
  margin-top: 0.5rem;
}

.elevator-icon {
  width: 2.5rem;
  height: 2.5rem;
  background-color: var(--neon);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--navy);
  font-weight: bold;
  margin-right: 0.75rem;
}

.elevator-info h6 {
  color: var(--white);
  font-size: 0.9375rem;
  margin-bottom: 0.125rem;
}

.elevator-info p {
  color: var(--neon);
  font-size: 0.75rem;
  margin-bottom: 0;
}

.elevator-info p span {
  font-weight: bold;
}

.elevator-status {
  margin-left: auto;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.direction, .occupancy {
  display: flex;
  align-items: center;
  color: #d1d5db;
  font-size: 0.75rem;
}

.direction svg, .occupancy svg {
  margin-right: 0.25rem;
}

.occupancy {
  margin-top: 0.25rem;
}

.option-details {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: #a0aec0;
  margin-bottom: 0.5rem;
}

.progress-container {
  height: 0.5rem;
  background-color: var(--navy-900);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 0.5rem;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(to right, var(--neon), #2dd36f);
  transition: width 0.7s ease;
  animation: progressAnimation 0.7s ease;
}

@keyframes progressAnimation {
  from { width: 0; }
}

.time-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.time-metric {
  background-color: rgba(8, 15, 29, 0.8);
  border-radius: var(--border-radius);
  padding: 0.25rem;
  text-align: center;
}

.time-metric .label {
  display: block;
  font-size: 0.625rem;
  color: #a0aec0;
}

.time-metric .value {
  display: block;
  font-size: 0.75rem;
  color: var(--white);
  font-weight: 500;
}

.other-options-title {
  font-size: 0.75rem;
  color: var(--white);
  margin-bottom: 0.5rem;
}

.other-options {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.elevator-option {
  background-color: rgba(23, 43, 77, 0.6);
  border-radius: var(--border-radius);
  padding: 0.75rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.elevator-option.disabled {
  opacity: 0.7;
}

.elevator-option-main {
  display: flex;
  align-items: center;
}

.small-elevator-icon {
  width: 2rem;
  height: 2rem;
  background-color: #4a5568;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 0.875rem;
  margin-right: 0.5rem;
}

.elevator-option-status {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  font-size: 0.75rem;
}

.option-direction, .option-occupancy {
  display: flex;
  align-items: center;
  color: #d1d5db;
}

.option-direction svg, .option-occupancy svg {
  margin-right: 0.25rem;
}

.maintenance-status {
  display: flex;
  align-items: center;
  color: var(--red);
  font-size: 0.75rem;
}

.maintenance-status svg {
  margin-right: 0.25rem;
}

.maintenance-label {
  color: var(--red);
}

/* Stairs Tab */
.stairs-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.floors-count {
  font-size: 0.75rem;
  color: var(--neon);
}

.stairs-option {
  background-color: rgba(23, 43, 77, 0.6);
  border-radius: var(--border-radius);
  padding: 0.75rem;
  margin-bottom: 0.75rem;
  position: relative;
}

.stairs-option.best {
  background: linear-gradient(to right, rgba(74, 140, 255, 0.2), transparent);
  border: 1px solid rgba(74, 140, 255, 0.3);
}

.stairs-main {
  display: flex;
  align-items: center;
  margin-bottom: 0.75rem;
  margin-top: 0.5rem;
}

.stairs-icon {
  width: 2.5rem;
  height: 2.5rem;
  background-color: var(--blue);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  margin-right: 0.75rem;
}

.stairs-option:not(.best) .stairs-icon {
  background-color: #4a5568;
}

.stairs-info h6 {
  color: var(--white);
  font-size: 0.9375rem;
  margin-bottom: 0.125rem;
}

.stairs-info p {
  color: #a0aec0;
  font-size: 0.75rem;
  margin-bottom: 0;
}

.stairs-option.best .stairs-info p {
  color: var(--blue);
}

.stairs-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.stat-item {
  background-color: rgba(8, 15, 29, 0.8);
  border-radius: var(--border-radius);
  padding: 0.5rem;
  text-align: center;
}

.stat-label {
  display: block;
  font-size: 0.625rem;
  color: #a0aec0;
}

.stat-value {
  display: block;
  font-size: 0.75rem;
  color: var(--white);
  font-weight: 600;
}

.congestion {
  margin-bottom: 0.5rem;
}

.congestion-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  margin-bottom: 0.25rem;
}

.congestion-header span:first-child {
  color: #a0aec0;
}

.congestion-level {
  font-weight: 500;
}

.congestion-level.low {
  color: var(--green);
}

.congestion-level.medium {
  color: var(--yellow);
}

.congestion-level.high {
  color: var(--red);
}

.congestion-bar {
  height: 0.5rem;
  background-color: var(--navy-900);
  border-radius: 999px;
  overflow: hidden;
}

.congestion-progress {
  height: 100%;
  background-color: var(--green);
}

.congestion-progress.medium {
  background-color: var(--yellow);
}

.congestion-progress.high {
  background-color: var(--red);
}

.comparison {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
}

.comparison span:first-child {
  color: #a0aec0;
}

.comparison-result {
  color: var(--red);
}

.health-benefits {
  background-color: rgba(23, 43, 77, 0.4);
  border-radius: var(--border-radius);
  padding: 0.75rem;
}

.benefits-header {
  display: flex;
  align-items: center;
  margin-bottom: 0.5rem;
}

.benefits-header svg {
  color: var(--neon);
  margin-right: 0.5rem;
}

.benefits-header h5 {
  color: var(--white);
  font-size: 0.875rem;
  margin-bottom: 0;
}

.health-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.health-metric {
  background-color: rgba(8, 15, 29, 0.8);
  border-radius: var(--border-radius);
  padding: 0.5rem;
}

.metric-label {
  color: #a0aec0;
  font-size: 0.625rem;
}

.metric-value {
  color: var(--white);
  font-size: 0.875rem;
  font-weight: 600;
}

.app-nav {
  margin-top: auto;
  display: flex;
  justify-content: space-around;
  background-color: rgba(8, 15, 29, 0.9);
  border-radius: var(--border-radius);
  padding: 0.75rem 0;
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  color: #4a5568;
  font-size: 0.75rem;
}

.active-indicator {
  width: 0.25rem;
  height: 0.25rem;
  border-radius: 50%;
  margin-bottom: 0.25rem;
}

.nav-item.active {
  color: var(--neon);
}

.nav-item.active .active-indicator {
  background-color: var(--neon);
}

/* How It Works Section */
.how-it-works {
  background-color: var(--white);
}

.timeline {
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  background-color: rgba(23, 43, 77, 0.1);
  transform: translateX(-50%);
}

.timeline-step {
  margin-bottom: 4rem;
  position: relative;
}

.timeline-step:last-child {
  margin-bottom: 0;
}

.timeline-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  position: relative;
}

.timeline-content.even .step-content {
  order: 2;
}

.timeline-content.even .step-image {
  order: 1;
}

.step-content {
  display: flex;
  justify-content: flex-end;
  text-align: right;
}

.step-content.left {
  justify-content: flex-start;
  text-align: left;
}

.step-card {
  background-color: var(--light-gray);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  max-width: 25rem;
  box-shadow: var(--shadow);
}

.step-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.features-list {
  margin-top: 1rem;
}

.features-list li {
  margin-bottom: 0.5rem;
  display: flex;
  justify-content: flex-end;
  color: var(--navy-700);
}

.step-content.left .features-list li {
  justify-content: flex-start;
}

.features-list li svg {
  color: var(--neon);
  margin-right: 0.5rem;
}

.step-content.left .features-list li svg {
  margin-right: 0.5rem;
}

.step-image img {
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  max-width: 100%;
  height: auto;
}

.step-number {
  width: 3rem;
  height: 3rem;
  background-color: var(--neon);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--navy);
  font-weight: bold;
  font-size: 1.25rem;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 1;
}

/* Benefits Section */
.benefits {
  background-color: var(--light-gray);
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
}

.benefit-card {
  background-color: var(--white);
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.benefit-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.benefit-icon {
  width: 4rem;
  height: 4rem;
  background-color: var(--navy);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--neon);
  margin-bottom: 1.5rem;
}

.benefit-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.benefit-card p {
  color: var(--navy-700);
  margin-bottom: 1rem;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  display: inline-block;
  background-color: var(--light-gray);
  border-radius: 999px;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--navy);
}

/* Contact Section */
.contact {
  background-color: var(--navy);
  color: var(--white);
  position: relative;
}

.contact::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.contact::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 33%;
  height: 100%;
  background-color: rgba(57, 255, 20, 0.05);
  filter: blur(50px);
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 3rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.contact-content h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.contact-content p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.125rem;
  margin-bottom: 2rem;
}

.benefits-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.benefit-item {
  display: flex;
  align-items: center;
}

.benefit-item svg {
  color: var(--neon);
  margin-right: 0.75rem;
}

.contact-form-container {
  background-color: var(--white);
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--shadow-lg);
}

.contact-form h3 {
  color: var(--navy);
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  color: var(--navy);
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid #e2e8f0;
  border-radius: var(--border-radius);
  background-color: #f8fafc;
  color: var(--navy);
  transition: border-color 0.3s, box-shadow 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--neon);
  box-shadow: 0 0 0 2px rgba(57, 255, 20, 0.2);
}

/* Footer */
.footer {
  background-color: var(--navy-900);
  color: var(--white);
  padding: 4rem 0 2rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 3rem;
}

.footer-brand {
  max-width: 20rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  margin-bottom: 1rem;
}

.footer-logo h2 {
  font-size: 1.5rem;
  margin-bottom: 0;
}

.footer-brand p {
  color: var(--light-gray);
  opacity: 0.8;
  margin-bottom: 1.5rem;
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-links a {
  color: var(--light-gray);
  opacity: 0.6;
  transition: var(--transition);
}

.social-links a:hover {
  color: var(--neon);
  opacity: 1;
}

.links-column h3 {
  font-size: 1.125rem;
  margin-bottom: 1.25rem;
  color: var(--white);
}

.links-column ul {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.links-column a {
  color: var(--light-gray);
  opacity: 0.8;
  transition: var(--transition);
}

.links-column a:hover {
  color: var(--neon);
  opacity: 1;
}

.contact-info li {
  display: flex;
  margin-bottom: 1rem;
}

.contact-info svg {
  color: var(--neon);
  margin-top: 0.25rem;
  margin-right: 0.75rem;
  flex-shrink: 0;
}

.contact-info span {
  color: var(--light-gray);
  opacity: 0.8;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 3rem;
  padding-top: 2rem;
  text-align: center;
  color: var(--light-gray);
  opacity: 0.6;
  font-size: 0.875rem;
}

/* Scroll to top button */
.scroll-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 3rem;
  height: 3rem;
  background-color: var(--neon);
  color: var(--navy);
  border: none;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s, transform 0.3s;
  box-shadow: 0 4px 10px rgba(57, 255, 20, 0.4);
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
}

.scroll-top:hover {
  transform: translateY(-5px);
}

/* Toast notification */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background-color: var(--white);
  border-radius: var(--border-radius);
  padding: 1rem;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
  z-index: 1000;
  transition: transform 0.3s, opacity 0.3s;
  transform: translateY(1rem);
  opacity: 0;
  visibility: hidden;
  max-width: 25rem;
}

.toast.visible {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.toast-content {
  display: flex;
  align-items: flex-start;
}

.toast-content svg {
  color: var(--green);
  margin-right: 0.75rem;
  flex-shrink: 0;
}

.toast-message {
  flex: 1;
}

.toast-message h4 {
  color: var(--navy);
  margin-bottom: 0.25rem;
  font-size: 1rem;
}

.toast-message p {
  color: var(--navy-700);
  font-size: 0.875rem;
  margin-bottom: 0;
}

.toast-close {
  background: none;
  border: none;
  color: #a0aec0;
  cursor: pointer;
  margin-left: 0.75rem;
  flex-shrink: 0;
  opacity: 0.7;
  transition: opacity 0.3s;
}

.toast-close:hover {
  opacity: 1;
}

/* Reveal Animation */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.8s ease-in-out;
}

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

/* Fade In Animation */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation-name: fadeIn;
  animation-duration: 0.5s;
  animation-fill-mode: both;
  animation-timing-function: ease-out;
}

/* Fade In Left Animation */
@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.fade-in-left {
  animation-name: fadeInLeft;
  animation-duration: 0.5s;
  animation-fill-mode: both;
  animation-timing-function: ease-out;
}

/* Fade In Right Animation */
@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.fade-in-right {
  animation-name: fadeInRight;
  animation-duration: 0.5s;
  animation-fill-mode: both;
  animation-timing-function: ease-out;
}

/* Responsive adjustments */
@media (max-width: 1024px) {
  .hero-content, .solution-content, .contact-wrapper, .app-features-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .app-features {
    order: 2;
  }
  
  .phone-mockup-container {
    order: 1;
  }
  
  .left-features, .right-features {
    gap: 1rem;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 14px;
  }
  
  section {
    padding: 4rem 0;
  }
  
  .main-nav {
    display: none;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .mobile-menu.active {
    display: block;
  }
  
  .hero-text h2 {
    font-size: 2.5rem;
  }
  
  .timeline::before {
    left: 2rem;
  }
  
  .timeline-content {
    grid-template-columns: 1fr;
  }
  
  .step-content, .step-content.left {
    justify-content: flex-start;
    text-align: left;
    padding-left: 4rem;
  }
  
  .step-image {
    padding-left: 4rem;
  }
  
  .features-list li, .step-content.left .features-list li {
    justify-content: flex-start;
  }
  
  .step-number {
    left: 2rem;
    transform: translateY(-50%);
  }
  
  .benefits-grid {
    grid-template-columns: 1fr;
  }
  
  .benefits-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }
  
  .btn {
    width: 100%;
  }
  
  .step-content, .step-image {
    padding-left: 3rem;
  }
  
  .step-card {
    padding: 1rem;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* Animation Delays */
[data-delay="100"] {
  animation-delay: 0.1s;
}

[data-delay="200"] {
  animation-delay: 0.2s;
}

[data-delay="300"] {
  animation-delay: 0.3s;
}

[data-delay="400"] {
  animation-delay: 0.4s;
}

[data-delay="500"] {
  animation-delay: 0.5s;
}

[data-delay="600"] {
  animation-delay: 0.6s;
}

[data-delay="700"] {
  animation-delay: 0.7s;
}

[data-delay="800"] {
  animation-delay: 0.8s;
}

[data-delay="900"] {
  animation-delay: 0.9s;
}