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

:root {
  --color-bg: #090909;
  --color-bg-light: #0e0e0e;
  --color-bg-card: #181818;
  --color-primary: #24e252;
  --color-primary-light: rgba(36, 226, 82, 0.1);
  --color-primary-border: rgba(36, 226, 82, 0.4);
  --color-white: #ffffff;
  --color-text: rgba(255, 255, 255, 0.8);
  --color-text-muted: rgba(255, 255, 255, 0.5);
  --color-text-dimmed: rgba(255, 255, 255, 0.4);
  --color-text-faint: rgba(255, 255, 255, 0.2);
  --color-border: rgba(255, 255, 255, 0.1);
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --container-max-width: 1280px;
  --border-radius-sm: 10px;
  --border-radius-md: 14px;
  --border-radius-lg: 16px;
  --border-radius-xl: 24px;
  --transition: 0.2s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
}

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

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 80px;
}

@media (max-width: 1024px) {
  .container {
    padding: 0 40px;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 20px;
  }
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 20px 0;
  background: linear-gradient(180deg, var(--color-bg) 0%, transparent 100%);
}

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

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-icon {
  width: 28px;
  height: 28px;
}

.logo-lg .logo-icon {
  width: 42px;
  height: 42px;
}

.logo-text {
  font-weight: 700;
  font-size: 20px;
  color: var(--color-white);
  letter-spacing: -0.2px;
}

.logo-lg .logo-text {
  font-size: 31px;
}

/* Navigation */
.nav {
  display: flex;
  gap: 32px;
}

.nav-link {
  font-weight: 500;
  font-size: 13px;
  color: var(--color-white);
  transition: color var(--transition);
}

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

@media (max-width: 768px) {
  .nav {
    display: none;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-family: var(--font-family);
  font-weight: 700;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: all var(--transition);
}

.btn-primary {
  background-color: var(--color-primary);
  color: #000;
  box-shadow: 0 0 40px rgba(16, 185, 129, 0.3);
}

.btn-primary:hover {
  background-color: #1fd048;
  transform: translateY(-1px);
  box-shadow: 0 0 50px rgba(16, 185, 129, 0.4);
}

.btn-sm {
  padding: 10px 24px;
  font-size: 13px;
}

.btn-lg {
  padding: 16px 64px;
  font-size: 16px;
}

.btn-icon {
  width: 20px;
  height: 20px;
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 13px;
  background: rgba(36, 226, 82, 0.05);
  border: 1px solid var(--color-primary-border);
  border-radius: 9999px;
}

.badge-dot {
  position: relative;
  width: 8px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 50%;
}

.badge-dot::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--color-primary);
  border-radius: 50%;
  opacity: 0.75;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.75; }
  50% { transform: scale(1.5); opacity: 0; }
}

.badge-text {
  font-weight: 600;
  font-size: 12px;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 1.2px;
}

/* Hero Section */
.hero {
  position: relative;
  padding: 180px 0 100px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: -175px;
  left: -14px;
  right: -14px;
  height: 1222px;
  background: radial-gradient(ellipse at center top, rgba(36, 226, 82, 0.15) 0%, transparent 50%);
  opacity: 0.34;
  pointer-events: none;
}

.hero-container {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 32px;
}

.hero-title {
  font-weight: 700;
  font-size: clamp(42px, 8vw, 92px);
  line-height: 1.1;
  letter-spacing: -0.05em;
  background: linear-gradient(180deg, #fff 0%, #d4f5e2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  padding-bottom: 0.1em;
}

.hero-description {
  max-width: 722px;
  font-size: 22px;
  line-height: 1.45;
  color: var(--color-text);
}

/* Hero Cards */
.hero-cards {
  position: relative;
  width: 100%;
  height: 400px;
  margin-top: 48px;
}

.prediction-card {
  position: absolute;
  width: 372px;
  height: 366px;
  background: var(--color-bg);
  border: 1px solid #cfcfcf;
  border-radius: var(--border-radius-xl);
  box-shadow: 0 -14px 34px rgba(207, 207, 207, 0.2);
}

.prediction-card::before {
  content: '';
  position: absolute;
  inset: 8px;
  border-radius: var(--border-radius-lg);
  background: linear-gradient(126deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0.02) 50%, transparent 55%);
}

.prediction-card-left {
  left: calc(50% - 451px);
  top: 39px;
  opacity: 0.2;
}

.prediction-card-center {
  left: 50%;
  transform: translateX(-50%);
  top: 0;
}

.prediction-card-right {
  right: calc(50% - 451px);
  top: 39px;
  opacity: 0.2;
}

.hero-cards-gradient {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 160px;
  background: linear-gradient(180deg, transparent 0%, var(--color-bg) 54%);
}

@media (max-width: 1200px) {
  .prediction-card-left,
  .prediction-card-right {
    display: none;
  }
}

@media (max-width: 768px) {
  .hero {
    padding: 140px 0 60px;
  }

  .hero-description {
    font-size: 18px;
  }

  .hero-cards {
    height: 300px;
  }

  .prediction-card {
    width: 300px;
    height: 300px;
  }
}

/* Sections */
.section {
  padding: 64px 0;
}

.section-dark {
  background: linear-gradient(180deg, var(--color-bg) 0%, rgba(18, 18, 18, 0.5) 30%, var(--color-bg) 76%);
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-title {
  font-weight: 700;
  font-size: clamp(32px, 5vw, 46px);
  line-height: 1.04;
  letter-spacing: -0.026em;
  color: var(--color-white);
  margin-bottom: 16px;
}

.section-title-left {
  text-align: left;
}

.section-description {
  max-width: 672px;
  margin: 0 auto;
  font-size: 18px;
  line-height: 1.55;
  color: var(--color-text-muted);
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}

.feature-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 25px;
  background: rgba(255, 255, 255, 0.01);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--border-radius-lg);
  text-align: center;
  transition: all var(--transition);
}

.feature-card:hover {
  border-color: rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.02);
}

.feature-icon {
  width: 28px;
  height: 28px;
  margin-bottom: 16px;
}

.feature-icon svg {
  width: 100%;
  height: 100%;
}

.feature-title {
  font-weight: 600;
  font-size: 15px;
  color: var(--color-white);
  margin-bottom: 4px;
}

.feature-description {
  font-size: 13px;
  color: var(--color-text-dimmed);
}

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

@media (max-width: 640px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Benefits Grid */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.benefit-card {
  position: relative;
  padding: 32px;
  background: linear-gradient(142deg, #181818 0%, #0e0e0e 72%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--border-radius-lg);
  box-shadow: 0 4px 34px rgba(0, 0, 0, 0.15);
  transition: all var(--transition);
}

.benefit-card:hover {
  border-color: rgba(255, 255, 255, 0.12);
  transform: translateY(-2px);
}

.benefit-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--color-primary-light);
  border-radius: var(--border-radius-sm);
  margin-bottom: 24px;
}

.benefit-icon svg {
  width: 24px;
  height: 24px;
}

.benefit-title {
  font-weight: 600;
  font-size: 19px;
  color: var(--color-white);
  margin-bottom: 12px;
}

.benefit-description {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-muted);
}

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

@media (max-width: 640px) {
  .benefits-grid {
    grid-template-columns: 1fr;
  }
}

/* How It Works */
.how-it-works {
  display: flex;
  gap: 64px;
  align-items: flex-start;
}

.how-it-works-content {
  flex: 1;
}

.how-it-works-image {
  flex-shrink: 0;
  width: 638px;
}

.steps {
  display: flex;
  flex-direction: column;
  gap: 48px;
  margin: 40px 0;
}

.step {
  display: flex;
  gap: 24px;
  align-items: flex-start;
}

.step-number {
  font-weight: 900;
  font-size: 27px;
  color: var(--color-primary);
  line-height: 1.33;
}

.step-content {
  flex: 1;
}

.step-title {
  font-weight: 700;
  font-size: 19px;
  color: var(--color-white);
  margin-bottom: 8px;
}

.step-description {
  font-size: 14px;
  line-height: 1.85;
  color: var(--color-text-muted);
}

.info-box {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 25px;
  background: rgba(36, 226, 82, 0.05);
  border: 1px solid rgba(36, 226, 82, 0.2);
  border-radius: var(--border-radius-lg);
  font-weight: 500;
  font-size: 14px;
  color: var(--color-primary);
}

.info-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.app-preview {
  width: 100%;
  height: 518px;
  background: linear-gradient(134deg, #181818 0%, #0e0e0e 72%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  box-shadow: 0 3px 25px rgba(0, 0, 0, 0.15);
  overflow: hidden;
}

.app-preview-header {
  padding: 16px 24px;
  background: #241e24;
}

.app-preview-title {
  font-weight: 700;
  font-size: 14px;
  color: var(--color-white);
}

.app-preview-content {
  padding: 24px;
}

.app-preview-placeholder {
  width: 229px;
  height: 77px;
  background: #505050;
  border-radius: 9px;
}

@media (max-width: 1024px) {
  .how-it-works {
    flex-direction: column;
  }

  .how-it-works-image {
    width: 100%;
    max-width: 638px;
  }
}

/* FAQ */
.faq-list {
  max-width: 896px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  background: none;
  border: none;
  font-family: var(--font-family);
  font-weight: 500;
  font-size: 16px;
  color: var(--color-text);
  text-align: left;
  cursor: pointer;
  transition: color var(--transition);
}

.faq-question:hover {
  color: var(--color-white);
}

.faq-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  transition: transform var(--transition);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-answer p {
  padding-bottom: 24px;
  font-weight: 500;
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text-dimmed);
}

.faq-item-open .faq-answer {
  max-height: 200px;
}

.faq-item-open .faq-icon {
  transform: rotate(180deg);
}

.faq-support {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 72px;
  font-size: 15px;
  color: var(--color-text-dimmed);
}

.faq-support svg {
  width: 16px;
  height: 16px;
}

/* Footer */
.footer {
  padding: 80px 0;
  background: rgba(255, 255, 255, 0.05);
}

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

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  max-width: 320px;
  text-align: center;
}

.footer-description {
  font-size: 13px;
  line-height: 1.55;
  color: var(--color-text-dimmed);
}

.social-links {
  display: flex;
  gap: 16px;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 50%;
  transition: background var(--transition);
}

.social-link:hover {
  background: rgba(255, 255, 255, 0.1);
}

.social-link svg {
  width: 20px;
  height: 20px;
}

.footer-bottom {
  margin-top: 80px;
  padding-top: 33px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  text-align: center;
}

.footer-bottom p {
  font-size: 11px;
  color: var(--color-text-faint);
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .section {
    padding: 48px 0;
  }

  .section-header {
    margin-bottom: 32px;
  }

  .section-description {
    font-size: 16px;
  }

  .btn-lg {
    padding: 14px 40px;
    font-size: 15px;
  }

  .footer {
    padding: 48px 0;
  }

  .footer-bottom {
    margin-top: 48px;
  }
}