/* ========================================
   eBon Landing Page — styles.css
   ======================================== */

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

:root {
  --black: #0a0a0a;
  --white: #ffffff;
  --green: #22c55e;
  --green-dark: #16a34a;
  --gray-50: #fafafa;
  --gray-100: #f5f5f5;
  --gray-200: #e5e5e5;
  --gray-300: #d4d4d4;
  --gray-400: #a3a3a3;
  --gray-500: #737373;
  --gray-600: #525252;
  --gray-700: #404040;
  --gray-800: #262626;
  --gray-900: #171717;
}

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

body {
  font-family: 'Onest', sans-serif;
  color: var(--black);
  background: var(--white);
  overflow-x: hidden;
}

/* ---- NAV ---- */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 20px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.nav.scrolled {
  background: rgba(255, 255, 255, 0.85);
  border-bottom: 1px solid var(--gray-200);
}

.nav-logo {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--black);
  text-decoration: none;
}

.nav-logo span {
  color: var(--green);
}

.nav-cta {
  padding: 10px 24px;
  background: var(--black);
  color: var(--white);
  border: none;
  border-radius: 100px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s;
  text-decoration: none;
}

.nav-cta:hover {
  background: var(--gray-800);
  transform: translateY(-1px);
}

/* ---- HERO ---- */

.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(34, 197, 94, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-600);
  margin-bottom: 32px;
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--green);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.4;
  }
}

.hero h1 {
  font-size: clamp(40px, 7vw, 80px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -2px;
  max-width: 800px;
  margin-bottom: 24px;
}

.hero h1 .accent {
  background: linear-gradient(135deg, var(--green), var(--green-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--gray-500);
  max-width: 520px;
  line-height: 1.6;
  font-weight: 300;
  margin-bottom: 48px;
}

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

.btn-primary {
  padding: 16px 36px;
  background: var(--black);
  color: var(--white);
  border: none;
  border-radius: 100px;
  font-family: inherit;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s;
  text-decoration: none;
}

.btn-primary:hover {
  background: var(--gray-800);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.btn-secondary {
  padding: 16px 36px;
  background: transparent;
  color: var(--black);
  border: 1.5px solid var(--gray-300);
  border-radius: 100px;
  font-family: inherit;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s;
  text-decoration: none;
}

.btn-secondary:hover {
  border-color: var(--black);
  transform: translateY(-2px);
}

/* ---- PHONES SHOWCASE ---- */

.phones-section {
  padding: 40px 24px 120px;
  position: relative;
}

.phones-container {
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: clamp(16px, 3vw, 40px);
  max-width: 900px;
  margin: 0 auto;
  perspective: 1000px;
}

.phone-frame {
  background: var(--black);
  border-radius: 40px;
  overflow: hidden;
  box-shadow:
    0 40px 80px rgba(0, 0, 0, 0.15),
    0 0 0 1px rgba(0, 0, 0, 0.05);
}

.phone-frame img {
  display: block;
  width: 100%;
  height: auto;
}

.phone-frame.center {
  width: clamp(220px, 28vw, 280px);
  z-index: 2;
}

.phone-frame.left,
.phone-frame.right {
  width: clamp(180px, 22vw, 230px);
  z-index: 1;
}

/* ---- APP PREVIEW (images from assets/ebon-images.js) ---- */

.app-preview {
  padding: 100px 24px;
  background: var(--gray-50);
}

.app-preview-inner {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.app-preview-inner h2 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: -1px;
  margin-bottom: 16px;
}

.app-preview-inner > p {
  font-size: 17px;
  color: var(--gray-500);
  font-weight: 300;
  max-width: 520px;
  margin: 0 auto 48px;
  line-height: 1.6;
}

.app-preview-frame {
  margin: 0 auto;
  border-radius: 32px;
  overflow: hidden;
  box-shadow: 0 32px 64px rgba(0, 0, 0, 0.12);
  background: var(--black);
  max-width: min(320px, 88vw);
}

.app-preview-frame img {
  display: block;
  width: 100%;
  height: auto;
}

/* ---- FEATURES ---- */

.features {
  padding: 120px 24px;
  background: var(--gray-50);
}

.features-header {
  text-align: center;
  margin-bottom: 80px;
}

.features-header h2 {
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 700;
  letter-spacing: -1.5px;
  margin-bottom: 16px;
}

.features-header p {
  font-size: 18px;
  color: var(--gray-500);
  font-weight: 300;
  max-width: 480px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  max-width: 1100px;
  margin: 0 auto;
}

.feature-card {
  background: var(--white);
  border-radius: 24px;
  padding: 40px;
  border: 1px solid var(--gray-200);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.06);
  border-color: var(--gray-300);
}

.feature-icon {
  width: 56px;
  height: 56px;
  background: var(--gray-100);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  font-size: 24px;
}

.feature-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: -0.3px;
}

.feature-card p {
  font-size: 15px;
  color: var(--gray-500);
  line-height: 1.7;
  font-weight: 300;
}

/* ---- HOW IT WORKS ---- */

.how {
  padding: 120px 24px;
  max-width: 900px;
  margin: 0 auto;
}

.how h2 {
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 700;
  letter-spacing: -1.5px;
  text-align: center;
  margin-bottom: 80px;
}

.steps {
  display: flex;
  flex-direction: column;
  gap: 64px;
}

.step {
  display: flex;
  align-items: flex-start;
  gap: 32px;
}

.step-number {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  background: var(--black);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
}

.step-content h3 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: -0.3px;
}

.step-content p {
  font-size: 16px;
  color: var(--gray-500);
  line-height: 1.7;
  font-weight: 300;
}

/* ---- ROADMAP ---- */

.roadmap {
  padding: 120px 24px;
  background: var(--gray-50);
}

.roadmap-header {
  text-align: center;
  margin-bottom: 80px;
}

.roadmap-header h2 {
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 700;
  letter-spacing: -1.5px;
  margin-bottom: 16px;
}

.roadmap-header p {
  font-size: 18px;
  color: var(--gray-500);
  font-weight: 300;
  max-width: 520px;
  margin: 0 auto;
}

.roadmap-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  max-width: 820px;
  margin: 0 auto;
}

.roadmap-col {
  background: var(--white);
  border-radius: 24px;
  padding: 40px 36px;
  border: 1px solid var(--gray-200);
}

.roadmap-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 28px;
  letter-spacing: 0.3px;
  text-transform: uppercase;
}

.roadmap-label.available {
  background: rgba(34, 197, 94, 0.1);
  color: var(--green-dark);
}

.roadmap-label.coming {
  background: var(--gray-100);
  color: var(--gray-600);
}

.roadmap-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.roadmap-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  color: var(--gray-700);
  line-height: 1.5;
}

.roadmap-list .check {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  margin-top: 1px;
}

.roadmap-list .check.done {
  background: rgba(34, 197, 94, 0.12);
  color: var(--green-dark);
}

.roadmap-list .check.soon {
  background: var(--gray-100);
  color: var(--gray-400);
}

/* ---- STATS ---- */

.stats {
  padding: 80px 24px;
  background: var(--black);
  color: var(--white);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.stat-number {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 700;
  letter-spacing: -1px;
  background: linear-gradient(135deg, var(--green), #4ade80);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 15px;
  color: var(--gray-400);
  margin-top: 8px;
  font-weight: 300;
}

/* ---- CTA ---- */

.cta {
  padding: 120px 24px;
  text-align: center;
}

.cta h2 {
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 700;
  letter-spacing: -1.5px;
  margin-bottom: 16px;
}

.cta > p {
  font-size: 18px;
  color: var(--gray-500);
  font-weight: 300;
  max-width: 480px;
  margin: 0 auto 48px;
}

.cta-form {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  max-width: 460px;
  margin: 0 auto;
}

.cta-row {
  display: flex;
  gap: 12px;
  width: 100%;
  flex-wrap: wrap;
  justify-content: center;
}

.cta-input {
  flex: 1;
  min-width: 240px;
  padding: 16px 24px;
  border: 1.5px solid var(--gray-200);
  border-radius: 100px;
  font-family: inherit;
  font-size: 16px;
  outline: none;
  transition: border-color 0.3s;
  background: var(--white);
}

.cta-recaptcha-legal {
  margin: 0;
  font-size: 11px;
  color: var(--gray-400);
  font-weight: 300;
  line-height: 1.5;
  max-width: 340px;
}

.cta-recaptcha-legal a {
  color: var(--gray-600);
}

.cta-recaptcha-legal a:hover {
  color: var(--green);
}

.cta-input:focus {
  border-color: var(--green);
}

.cta-input::placeholder {
  color: var(--gray-400);
}

.cta-submit {
  padding: 16px 36px;
  background: var(--green);
  color: var(--white);
  border: none;
  border-radius: 100px;
  font-family: inherit;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
}

.cta-submit:hover {
  background: var(--green-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(34, 197, 94, 0.3);
}

.cta-error {
  margin: 0;
  font-size: 14px;
  color: #b91c1c;
  font-weight: 500;
  max-width: 460px;
}

.cta-error[hidden] {
  display: none !important;
}

.cta-success {
  display: none;
  padding: 20px 32px;
  background: rgba(34, 197, 94, 0.08);
  border: 1px solid rgba(34, 197, 94, 0.2);
  border-radius: 16px;
  max-width: 460px;
  margin: 0 auto;
}

.cta-success.show {
  display: block;
}

.cta-success p {
  color: var(--green-dark);
  font-weight: 500;
  font-size: 16px;
  margin: 0;
}

/* ---- FOOTER ---- */

.footer {
  padding: 40px 24px;
  border-top: 1px solid var(--gray-200);
  text-align: center;
}

.footer p {
  font-size: 14px;
  color: var(--gray-400);
  font-weight: 300;
}

.footer a {
  color: var(--gray-600);
  text-decoration: none;
}

.footer a:hover {
  color: var(--green);
}

/* ---- ERROR PAGE (404) ---- */

.page-error {
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 80px 24px;
  text-align: center;
}

.page-error h1 {
  font-size: clamp(28px, 5vw, 44px);
  margin-bottom: 16px;
}

.page-error > p {
  color: var(--gray-500);
  max-width: 420px;
  margin: 0 auto 32px;
}

.page-error .btn-primary {
  display: inline-block;
  max-width: 200px;
  margin: 0 auto;
}

/* ---- REVEAL ANIMATIONS ---- */

.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* ---- RESPONSIVE ---- */

@media (max-width: 768px) {
  .nav {
    padding: 16px 20px;
  }

  .phones-container {
    flex-direction: column;
    align-items: center;
    gap: 24px;
  }

  .phone-frame.left,
  .phone-frame.right {
    width: 220px;
  }

  .phone-frame.center {
    width: 250px;
  }

  .step {
    flex-direction: column;
    gap: 16px;
    align-items: center;
    text-align: center;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .roadmap-grid {
    grid-template-columns: 1fr;
  }

  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
    text-align: center;
  }

  .cta-row {
    flex-direction: column;
  }

  .cta-input {
    min-width: auto;
  }
}