@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700;800;900&display=swap');
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}

:root {
  --yellow: #ffc400;
  --yellow2: #ffda44;
  --black: #050505;
  --dark: #101010;
  --card: #181818;
  --card2: #222222;
  --border: rgba(255, 196, 0, 0.28);
  --white: #ffffff;
  --muted: #9d9d9d;
  --green: #35e878;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--black);
  color: var(--white);
  font-family: Arial, Helvetica, sans-serif;
  overflow-x: hidden;
}

a {
  text-decoration: none;
}

/* =========================
           NAVBAR
        ========================= */

.main-navbar {
  background: rgba(5, 5, 5, 0.96);
  border-bottom: 1px solid rgba(255, 196, 0, 0.18);
  backdrop-filter: blur(15px);
  padding: 15px 0;
}

.navbar-brand {
  font-size: 28px;
  font-weight: 900;
  font-style: italic;
  color: white !important;
  letter-spacing: -1.5px;
}

.navbar-brand span {
  color: var(--yellow);
}

.navbar-nav .nav-link {
  color: #ddd !important;
  font-size: 14px;
  font-weight: 600;
  margin: 0 8px;
  transition: 0.3s;
}

.navbar-nav .nav-link:hover {
  color: var(--yellow) !important;
}

.login-btn {
  background: var(--yellow);
  color: #000;
  border-radius: 30px;
  padding: 10px 24px;
  font-weight: 800;
  border: none;
}

.login-btn:hover {
  background: var(--yellow2);
  color: #000;
}

.register-btn {
  border: 1px solid var(--yellow);
  color: var(--yellow);
  border-radius: 30px;
  padding: 9px 22px;
  font-weight: 700;
}

.register-btn:hover {
  background: var(--yellow);
  color: #000;
}

/* =========================
           HERO
        ========================= */

.hero {
  min-height: 720px;
  padding: 100px 0 80px;
  background:
    radial-gradient(
      circle at 75% 35%,
      rgba(255, 196, 0, 0.13),
      transparent 30%
    ),
    linear-gradient(135deg, #030303, #111 55%, #080808);
  position: relative;
  overflow: hidden;
}

.hero:before {
  content: "";
  position: absolute;
  width: 450px;
  height: 450px;
  border: 1px solid rgba(255, 196, 0, 0.08);
  border-radius: 50%;
  right: -150px;
  top: 100px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 15px;
  background: rgba(53, 232, 120, 0.08);
  border: 1px solid rgba(53, 232, 120, 0.3);
  color: var(--green);
  border-radius: 30px;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 25px;
}

.live-dot {
  width: 9px;
  height: 9px;
  background: var(--green);
  border-radius: 50%;
  box-shadow: 0 0 15px var(--green);
}

.hero h1 {
  font-size: clamp(45px, 6vw, 82px);
  line-height: 0.98;
  font-weight: 900;
  letter-spacing: -3px;
  margin-bottom: 25px;
}

.hero h1 span {
  color: var(--yellow);
}

.hero-text {
  max-width: 600px;
  color: #aaa;
  font-size: 18px;
  line-height: 1.7;
}

.hero-buttons {
  margin-top: 35px;
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}

.btn-yellow {
  background: var(--yellow);
  color: #000;
  border: none;
  padding: 14px 28px;
  border-radius: 12px;
  font-weight: 800;
}

.btn-yellow:hover {
  background: var(--yellow2);
  color: #000;
}

.btn-outline-yellow {
  border: 1px solid var(--yellow);
  color: var(--yellow);
  padding: 13px 28px;
  border-radius: 12px;
  font-weight: 700;
}

.btn-outline-yellow:hover {
  background: var(--yellow);
  color: #000;
}

/* =========================
           RATE CARD
        ========================= */

.rate-card {
  background: linear-gradient(145deg, #202020, #121212);
  border: 1px solid var(--border);
  border-radius: 30px;
  padding: 30px;
  box-shadow:
    0 20px 70px rgba(0, 0, 0, 0.6),
    0 0 50px rgba(255, 196, 0, 0.05);
  position: relative;
}

.rate-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 25px;
}

.rate-live {
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
}

.rate-live i {
  margin-right: 5px;
}

.rate-time {
  color: #777;
  font-size: 11px;
}

.coin-box {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 18px;
  margin: 20px 0 30px;
}

.coin {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 30px;
  font-weight: 900;
}

.coin-usdt {
  background: #42b89c;
  color: #126b5a;
}

.coin-inr {
  background: var(--yellow);
  color: #000;
}

.exchange-icon {
  color: var(--yellow);
  font-size: 30px;
}

.rate-value {
  font-size: 36px;
  font-weight: 900;
  margin-bottom: 5px;
}

.rate-value span {
  color: var(--yellow);
}

.rate-subtitle {
  color: #888;
  font-size: 14px;
  margin-bottom: 25px;
}

/* =========================
           CALCULATOR
        ========================= */

.calculator-card {
  background: #111;
  border: 1px solid #292929;
  border-radius: 22px;
  padding: 22px;
}

.calc-title {
  font-size: 14px;
  color: var(--yellow);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 15px;
}

.form-label {
  color: #999;
  font-size: 13px;
}

.form-control,
.form-select {
  background: #202020 !important;
  border: 1px solid #333 !important;
  color: white !important;
  padding: 13px 15px;
  border-radius: 10px;
}

.form-control:focus,
.form-select:focus {
  border-color: var(--yellow) !important;
  box-shadow: 0 0 0 3px rgba(255, 196, 0, 0.1) !important;
}

.result-box {
  background: rgba(255, 196, 0, 0.07);
  border: 1px solid rgba(255, 196, 0, 0.2);
  border-radius: 12px;
  padding: 15px;
  margin-top: 15px;
}

.result-label {
  color: #888;
  font-size: 12px;
}

.result-value {
  font-size: 27px;
  font-weight: 900;
  color: var(--yellow);
}

/* =========================
           STATS
        ========================= */

.stats-section {
  padding: 35px 0;
  background: #0b0b0b;
  border-block: 1px solid #1b1b1b;
}

.stat-item {
  text-align: center;
  padding: 15px;
}

.stat-number {
  font-size: 32px;
  font-weight: 900;
  color: var(--yellow);
}

.stat-label {
  color: #888;
  font-size: 13px;
}

/* =========================
           SECTION
        ========================= */

.section {
  padding: 100px 0;
}

.section-title {
  text-align: center;
  font-size: clamp(34px, 5vw, 55px);
  font-weight: 900;
  margin-bottom: 15px;
}

.section-title span {
  color: var(--yellow);
}

.section-subtitle {
  max-width: 650px;
  margin: auto;
  text-align: center;
  color: #888;
  line-height: 1.7;
}

/* =========================
           FEATURE CARDS
        ========================= */

.feature-card {
  height: 100%;
  background: linear-gradient(145deg, #181818, #0f0f0f);
  border: 1px solid #282828;
  border-radius: 20px;
  padding: 30px;
  transition: 0.3s;
}

.feature-card:hover {
  transform: translateY(-7px);
  border-color: rgba(255, 196, 0, 0.5);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.feature-icon {
  width: 55px;
  height: 55px;
  background: rgba(255, 196, 0, 0.1);
  border: 1px solid rgba(255, 196, 0, 0.25);
  color: var(--yellow);
  border-radius: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 20px;
}

.feature-card h4 {
  font-weight: 800;
  margin-bottom: 12px;
}

.feature-card p {
  color: #888;
  line-height: 1.7;
  margin: 0;
}

/* =========================
           HOW IT WORKS
        ========================= */

.step {
  text-align: center;
  position: relative;
}

.step-number {
  width: 60px;
  height: 60px;
  background: var(--yellow);
  color: #000;
  border-radius: 50%;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 900;
}

.step h5 {
  font-weight: 800;
}

.step p {
  color: #888;
  font-size: 14px;
  line-height: 1.6;
}

/* =========================
           ABOUT
        ========================= */

.about-box {
  background: linear-gradient(145deg, #1b1b1b, #0e0e0e);
  border: 1px solid #282828;
  border-radius: 28px;
  padding: 50px;
}

.about-box h2 {
  font-size: clamp(35px, 5vw, 55px);
  font-weight: 900;
}

.about-box h2 span {
  color: var(--yellow);
}

.about-box p {
  color: #999;
  line-height: 1.8;
}

/* =========================
           SUPPORT
        ========================= */

.support-card {
  background: #151515;
  border: 1px solid #292929;
  border-radius: 20px;
  padding: 30px;
  text-align: center;
  height: 100%;
}

.support-card i {
  font-size: 35px;
  color: var(--yellow);
  margin-bottom: 15px;
}

.support-card h5 {
  font-weight: 800;
}

.support-card p {
  color: #888;
}

/* =========================
           CTA
        ========================= */

.cta-section {
  padding: 80px 0;
}

.cta-box {
  background: linear-gradient(120deg, #211d0b, #111);
  border: 1px solid rgba(255, 196, 0, 0.35);
  border-radius: 30px;
  padding: 60px 30px;
  text-align: center;
}

.cta-box h2 {
  font-size: clamp(35px, 5vw, 55px);
  font-weight: 900;
}

.cta-box h2 span {
  color: var(--yellow);
}

.cta-box p {
  color: #999;
  max-width: 600px;
  margin: 15px auto 30px;
}

/* =========================
           FOOTER
        ========================= */

footer {
  background: #080808;
  border-top: 1px solid #222;
  padding: 60px 0 30px;
}

.footer-brand {
  font-size: 26px;
  font-weight: 900;
  font-style: italic;
}

.footer-brand span {
  color: var(--yellow);
}

footer p {
  color: #777;
  line-height: 1.7;
}

footer h6 {
  color: var(--yellow);
  font-weight: 800;
  margin-bottom: 18px;
}

footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

footer li {
  margin-bottom: 10px;
}

footer li a {
  color: #888;
  transition: 0.2s;
}

footer li a:hover {
  color: var(--yellow);
}

.copyright {
  border-top: 1px solid #1e1e1e;
  margin-top: 40px;
  padding-top: 25px;
  color: #666;
  font-size: 13px;
}

/* =========================
           WHATSAPP
        ========================= */

.whatsapp {
  position: fixed;
  right: 25px;
  bottom: 25px;
  width: 62px;
  height: 62px;
  border-radius: 50%;
  background: #16d34a;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  z-index: 1000;
  box-shadow: 0 5px 25px rgba(0, 0, 0, 0.5);
}

.whatsapp:hover {
  color: white;
  transform: scale(1.05);
}

/* =========================
           MOBILE BOTTOM NAV
        ========================= */

.mobile-bottom-nav {
  display: none;
}

/* =========================
           MOBILE
        ========================= */

@media (max-width: 767px) {
  .main-navbar {
    padding: 10px 0;
  }

  .navbar-brand {
    font-size: 23px;
  }

  .hero {
    min-height: auto;
    padding: 70px 0 50px;
  }

  .hero h1 {
    font-size: 48px;
    letter-spacing: -2px;
  }

  .hero-text {
    font-size: 15px;
  }

  .hero-buttons {
    display: grid;
    grid-template-columns: 1fr;
  }

  .hero-buttons a {
    width: 100%;
    text-align: center;
  }

  .rate-card {
    margin-top: 40px;
    padding: 20px;
    border-radius: 22px;
  }

  .coin {
    width: 60px;
    height: 60px;
    font-size: 25px;
  }

  .rate-value {
    font-size: 30px;
  }

  .section {
    padding: 70px 0;
  }

  .about-box {
    padding: 30px 22px;
  }

  .cta-box {
    padding: 45px 20px;
  }

  .whatsapp {
    right: 18px;
    bottom: 80px;
    width: 55px;
    height: 55px;
    font-size: 27px;
  }

  body {
    padding-bottom: 65px;
  }

  .mobile-bottom-nav {
    display: flex;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    height: 65px;
    background: rgba(20, 20, 20, 0.98);
    border-top: 1px solid #292929;
    z-index: 999;
    justify-content: space-around;
    align-items: center;
  }

  .mobile-bottom-nav a {
    color: #777;
    text-align: center;
    font-size: 10px;
    font-weight: 600;
  }

  .mobile-bottom-nav a i {
    display: block;
    font-size: 19px;
    margin-bottom: 2px;
  }

  .mobile-bottom-nav a.active {
    color: var(--yellow);
  }
}