/* === RESET & BASE === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --yellow: #FDB926;
  --yellow-dark: #E5A615;
  --dark: #182025;
  --dark2: #1A2730;
  --mid: #8A9BA8;
  --light: #1A2730;
  --white: #FDFDFD;
  --border: #2A3740;
  --green: #25D366;
  --radius: 12px;
  --radius-lg: 20px;
  font-size: 16px;
}

body {
  font-family: 'Inter', sans-serif;
  background: var(--dark);
  color: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* === NAV === */
.nav {
  position: sticky;
  top: 0;
  background: var(--dark);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  padding: 4px 0;
}

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

.logo {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.logo img {
  height: 67px;
  width: auto;
}

/* === BUTTONS === */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s ease;
  border: none;
}

.btn-nav {
  background: var(--light);
  color: var(--white);
  padding: 10px 20px;
  font-size: 0.875rem;
}

.btn-nav:hover { background: var(--dark2); border: 1px solid var(--border); }

.btn-primary {
  background: var(--yellow);
  color: var(--dark);
  font-weight: 700;
}

.btn-primary:hover {
  background: var(--yellow-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(245,200,66,0.4);
}

.btn-large {
  padding: 16px 32px;
  font-size: 1.05rem;
  border-radius: 10px;
}

.btn-full { width: 100%; text-align: center; }

/* === HERO === */
.hero {
  padding: 80px 0 60px;
  text-align: center;
  background: var(--dark);
}

.hero-badge {
  display: inline-block;
  background: rgba(253, 185, 38, 0.15);
  color: var(--yellow);
  border: 1px solid var(--yellow);
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(2.2rem, 6vw, 3.6rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 20px;
  color: var(--white);
}

.highlight {
  color: var(--green);
  position: relative;
}

.hero-sub {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  color: var(--mid);
  max-width: 560px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

.hero-note {
  margin-top: 16px;
  color: var(--mid);
  font-size: 0.875rem;
}

/* === DEMO / CHAT === */
.demo {
  padding: 80px 0;
  background: var(--light);
}

.section-title {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.8px;
  text-align: center;
  margin-bottom: 12px;
  color: var(--white);
}

.section-sub {
  text-align: center;
  color: var(--mid);
  font-size: 1.05rem;
  max-width: 520px;
  margin: 0 auto 48px;
}

.chat-window {
  max-width: 480px;
  margin: 0 auto;
  background: #ECE5DD;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.12);
}

.chat-header {
  background: #075E54;
  color: white;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.chat-avatar {
  width: 42px;
  height: 42px;
  background: #128C7E;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.chat-name {
  font-weight: 700;
  font-size: 0.95rem;
}

.chat-status {
  font-size: 0.75rem;
  opacity: 0.85;
  color: #25D366;
}

.chat-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 480px;
  overflow-y: auto;
}

.msg {
  max-width: 80%;
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 0.875rem;
  line-height: 1.5;
}

.msg.sent {
  background: #DCF8C6;
  align-self: flex-end;
  border-bottom-right-radius: 4px;
  color: var(--dark);
}

.msg.received {
  background: var(--white);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
  color: var(--dark);
  box-shadow: 0 1px 2px rgba(0,0,0,0.08);
}

/* === FEATURES === */
.features {
  padding: 80px 0;
  background: var(--dark);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.feature-card {
  background: var(--light);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: transform 0.15s, box-shadow 0.15s;
}

.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(253, 185, 38, 0.15);
  border-color: var(--yellow);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--white);
}

.feature-card p {
  color: var(--mid);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* === TRADES === */
.trades {
  padding: 80px 0;
  background: var(--dark);
  color: var(--white);
}

.trades .section-title { color: var(--white); }
.trades .section-sub { color: var(--mid); }

.trades-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 40px;
}

.trade {
  background: var(--dark2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
  font-size: 0.9rem;
  font-weight: 500;
  transition: background 0.15s;
}

.trade:hover {
  background: var(--light);
  border-color: var(--yellow);
}

/* === HOW IT WORKS === */
.how {
  padding: 80px 0;
  background: var(--light);
}

.steps {
  display: flex;
  flex-direction: column;
  gap: 32px;
  max-width: 600px;
  margin: 48px auto 0;
}

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

.step-num {
  width: 48px;
  height: 48px;
  background: var(--yellow);
  color: var(--dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.step-text h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--white);
}

.step-text p {
  color: var(--mid);
  font-size: 0.95rem;
}

/* === SOCIAL PROOF === */
.proof {
  padding: 60px 0;
  background: var(--yellow);
}

.proof-stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-num {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 900;
  letter-spacing: -1px;
  color: var(--dark);
}

.stat-label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--dark);
  margin-top: 4px;
}

/* === WHATSAPP BUTTON === */
.whatsapp-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: #25D366;
  color: #fff;
  padding: 16px 32px;
  border-radius: 10px;
  font-weight: 700;
  font-size: 1.05rem;
  text-decoration: none;
  transition: all 0.15s ease;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.3);
  font-family: 'Inter', sans-serif;
}
.whatsapp-btn:hover {
  background: #1ebe5c;
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(37, 211, 102, 0.4);
}
.whatsapp-btn svg { width: 22px; height: 22px; flex-shrink: 0; }

/* === WAITLIST === */
.waitlist {
  padding: 80px 0;
  background: var(--dark);
  text-align: center;
}

.waitlist h2 {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 900;
  letter-spacing: -1px;
  margin-bottom: 16px;
  color: var(--white);
}

.waitlist p {
  color: var(--mid);
  max-width: 480px;
  margin: 0 auto 40px;
  font-size: 1rem;
}

.waitlist-form {
  max-width: 560px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.waitlist-form input {
  width: 100%;
  padding: 14px 16px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: 'Inter', sans-serif;
  outline: none;
  transition: border-color 0.15s;
  background: var(--light);
  color: var(--white);
}

.waitlist-form input:focus {
  border-color: var(--yellow);
  background: var(--dark2);
}

.waitlist-form input::placeholder {
  color: var(--mid);
}

.form-note {
  font-size: 0.8rem;
  color: var(--mid);
  margin-top: 4px;
}

/* === FOOTER === */
.footer {
  padding: 40px 0;
  background: var(--dark);
  color: var(--mid);
  border-top: 1px solid var(--border);
}

.footer-inner {
  text-align: center;
}

.footer .logo {
  color: var(--white);
  margin-bottom: 12px;
}

.footer-text {
  font-size: 0.9rem;
  max-width: 400px;
  margin: 0 auto 16px;
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--mid);
  opacity: 0.7;
}

/* === MOBILE === */
@media (max-width: 768px) {
  .logo img { height: 48px; }

  .hero { padding: 60px 0 40px; }

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

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

  .proof-stat-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .chat-body { max-height: 380px; }
}

@media (max-width: 480px) {
  .hero h1 { letter-spacing: -1px; }

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

  .btn-large {
    padding: 14px 24px;
    font-size: 1rem;
  }
}