:root {
  --background: #050712;
  --background-soft: #0b1020;
  --surface: rgba(17, 24, 48, 0.82);
  --surface-solid: #111830;
  --surface-light: #182142;

  --primary: #7c5cff;
  --primary-hover: #9278ff;
  --secondary: #22c7f2;
  --success: #4ce0a3;

  --text-primary: #ffffff;
  --text-secondary: #aab2ca;
  --text-muted: #737d99;

  --border: rgba(255, 255, 255, 0.1);
  --border-primary: rgba(124, 92, 255, 0.55);

  --shadow-card: 0 24px 70px rgba(0, 0, 0, 0.45);
  --shadow-primary: 0 12px 32px rgba(124, 92, 255, 0.3);
}

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

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  min-height: 100vh;
  overflow-x: hidden;
  background:
    radial-gradient(
      circle at 15% 10%,
      rgba(124, 92, 255, 0.2),
      transparent 35%
    ),
    radial-gradient(
      circle at 85% 20%,
      rgba(34, 199, 242, 0.14),
      transparent 32%
    ),
    linear-gradient(145deg, #050712 0%, #090d1b 55%, #050712 100%);
  color: var(--text-primary);
  font-family: Inter, Arial, Helvetica, sans-serif;
  line-height: 1.5;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, black, transparent 85%);
}

body.menu-open {
  overflow: hidden;
}

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

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

/* HEADER */

.header {
  position: relative;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  padding: 0 24px;
  border-bottom: 1px solid var(--border);
  background: rgba(5, 7, 18, 0.72);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.logo {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.logo::after {
  content: ".";
  color: var(--secondary);
}

/* NAVIGATION */

.nav {
  display: flex;
  align-items: center;
}

.nav-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--border-primary);
  border-radius: 12px;
  background: rgba(124, 92, 255, 0.1);
  color: var(--text-primary);
  font-size: 1.35rem;
  transition:
    transform 0.25s ease,
    background-color 0.25s ease,
    box-shadow 0.25s ease;
}

.nav-toggle:hover {
  background: rgba(124, 92, 255, 0.2);
  box-shadow: 0 0 24px rgba(124, 92, 255, 0.25);
}

.nav-toggle.active {
  transform: rotate(90deg);
}

.nav-menu {
  position: absolute;
  top: 66px;
  right: 16px;
  display: flex;
  min-width: 220px;
  flex-direction: column;
  gap: 6px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: rgba(13, 18, 37, 0.96);
  box-shadow: var(--shadow-card);
  list-style: none;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-10px) scale(0.98);
  transform-origin: top right;
  transition:
    opacity 0.25s ease,
    transform 0.25s ease;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.nav-menu.open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

.nav-menu li {
  width: 100%;
}

.nav-menu a,
.nav-menu button {
  display: flex;
  align-items: center;
  width: 100%;
  min-height: 44px;
  padding: 10px 14px;
  border: none;
  border-radius: 11px;
  background: transparent;
  color: var(--text-secondary);
  text-align: left;
  font-size: 0.95rem;
  font-weight: 600;
  transition:
    color 0.2s ease,
    background-color 0.2s ease;
}

.nav-menu a:hover,
.nav-menu button:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
}

.nav-menu .signup-btn {
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), #5b7cff);
  color: #ffffff;
  box-shadow: var(--shadow-primary);
}

.nav-menu .signup-btn:hover {
  background: linear-gradient(135deg, var(--primary-hover), #718eff);
}

.nav-menu .login-btn {
  justify-content: center;
  border: 1px solid var(--border-primary);
  color: var(--text-primary);
}

/* MAIN LAYOUT */

.container {
  width: min(100% - 32px, 1040px);
  margin: 0 auto;
  padding: 64px 0 96px;
  text-align: center;
}

/* BITCOIN TICKER */

#btc-ticker {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 28px;
  padding: 10px 16px;
  border: 1px solid rgba(76, 224, 163, 0.22);
  border-radius: 100px;
  background: rgba(76, 224, 163, 0.07);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
}

#btc-ticker h2 {
  color: var(--text-secondary);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

#btcPrice {
  color: var(--success);
  font-size: 0.9rem;
  font-weight: 800;
}

#btcPrice::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 12px var(--success);
}

/* CONVERTER */

#converter {
  position: relative;
  width: min(100%, 680px);
  margin: 0 auto;
}

#converter::before {
  content: "Fast • Simple • Real-time";
  display: block;
  margin-bottom: 16px;
  color: var(--secondary);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

#converter h1 {
  max-width: 620px;
  margin: 0 auto;
  font-size: clamp(2.25rem, 7vw, 4.4rem);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -0.055em;
  text-wrap: balance;
}

#converter h1::after {
  content: "";
  display: block;
  width: 72px;
  height: 4px;
  margin: 22px auto 0;
  border-radius: 10px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
}

.converter {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 44px;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 28px;
  background: linear-gradient(
    145deg,
    rgba(26, 34, 67, 0.88),
    rgba(11, 16, 32, 0.92)
  );
  box-shadow: var(--shadow-card);
  overflow: hidden;
  text-align: left;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.converter::before {
  content: "";
  position: absolute;
  top: -90px;
  right: -70px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(124, 92, 255, 0.16);
  filter: blur(25px);
  pointer-events: none;
}

.converter::after {
  content: "Currency Converter";
  position: relative;
  grid-column: 1 / -1;
  margin-bottom: 4px;
  color: var(--text-primary);
  font-size: 1.05rem;
  font-weight: 700;
}

.converter input,
.converter select {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 58px;
  padding: 0 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
  outline: none;
  background: rgba(5, 8, 21, 0.7);
  color: var(--text-primary);
  font-size: 1rem;
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease,
    background-color 0.2s ease;
}

.converter input::placeholder {
  color: var(--text-muted);
}

.converter input:focus,
.converter select:focus {
  border-color: var(--primary);
  background: rgba(10, 14, 31, 0.95);
  box-shadow: 0 0 0 4px rgba(124, 92, 255, 0.13);
}

.converter select {
  appearance: none;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--text-secondary) 50%),
    linear-gradient(135deg, var(--text-secondary) 50%, transparent 50%);
  background-position:
    calc(100% - 19px) 25px,
    calc(100% - 14px) 25px;
  background-size: 5px 5px;
  background-repeat: no-repeat;
}

.converter select option {
  background: var(--surface-solid);
  color: var(--text-primary);
}

/* QUICK CRYPTO BUTTONS */

.quick-convert {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 2px 0;
}

.quick-convert button {
  min-width: 72px;
  padding: 9px 15px;
  border: 1px solid var(--border);
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  transition:
    transform 0.2s ease,
    color 0.2s ease,
    border-color 0.2s ease,
    background-color 0.2s ease;
}

.quick-convert button:hover {
  transform: translateY(-2px);
  border-color: var(--secondary);
  background: rgba(34, 199, 242, 0.1);
  color: #ffffff;
}

.quick-convert button.active {
  border-color: var(--primary);
  background: rgba(124, 92, 255, 0.18);
  color: #ffffff;
}

/* MAIN CONVERT BUTTON */

#convertBtn {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 60px;
  margin-top: 4px;
  border: none;
  border-radius: 15px;
  background: linear-gradient(135deg, var(--primary), #476cff);
  color: #ffffff;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  box-shadow: var(--shadow-primary);
  transition:
    transform 0.2s ease,
    filter 0.2s ease,
    box-shadow 0.2s ease;
}

#convertBtn:hover {
  transform: translateY(-2px);
  filter: brightness(1.08);
  box-shadow: 0 16px 36px rgba(124, 92, 255, 0.4);
}

#convertBtn:active {
  transform: translateY(0);
}

/* RESULT */

#result {
  position: relative;
  z-index: 1;
  min-height: 0;
  margin: 0;
  padding: 0;
  border: 1px solid transparent;
  border-radius: 16px;
  color: var(--text-primary);
  font-size: clamp(1.1rem, 4vw, 1.45rem);
  font-weight: 800;
  line-height: 1.4;
  opacity: 0;
  transform: translateY(8px);
  transition:
    opacity 0.3s ease,
    transform 0.3s ease,
    min-height 0.3s ease,
    padding 0.3s ease;
}

#result.show {
  min-height: 76px;
  padding: 18px;
  border-color: rgba(76, 224, 163, 0.22);
  background: rgba(76, 224, 163, 0.08);
  color: var(--success);
  opacity: 1;
  transform: translateY(0);
}

#result[data-type="error"] {
  border-color: rgba(255, 102, 122, 0.3);
  background: rgba(255, 102, 122, 0.1);
  color: #ff8b9b;
}

#result[data-type="loading"] {
  border-color: rgba(34, 199, 242, 0.25);
  background: rgba(34, 199, 242, 0.08);
  color: #70dcf8;
}

#convertBtn:disabled {
  cursor: wait;
  opacity: 0.7;
  transform: none;
}

/* MODALS */

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(1, 3, 10, 0.78);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity 0.25s ease,
    visibility 0.25s ease;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.modal {
  position: relative;
  width: min(100%, 420px);
  max-height: calc(100vh - 40px);
  overflow-y: auto;
  padding: 32px;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: linear-gradient(
    145deg,
    rgba(24, 33, 66, 0.98),
    rgba(10, 14, 30, 0.98)
  );
  box-shadow: var(--shadow-card);
  text-align: center;
  transform: translateY(16px) scale(0.98);
  transition: transform 0.25s ease;
}

.modal-overlay.active .modal {
  transform: translateY(0) scale(1);
}

.modal h2 {
  margin-bottom: 24px;
  color: var(--text-primary);
  font-size: 1.7rem;
  letter-spacing: -0.035em;
}

.modal input {
  width: 100%;
  height: 54px;
  margin-bottom: 14px;
  padding: 0 15px;
  border: 1px solid var(--border);
  border-radius: 13px;
  outline: none;
  background: rgba(5, 8, 21, 0.7);
  color: var(--text-primary);
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease;
}

.modal input::placeholder {
  color: var(--text-muted);
}

.modal input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(124, 92, 255, 0.13);
}

.primary-btn {
  width: 100%;
  min-height: 54px;
  margin-top: 6px;
  border: none;
  border-radius: 13px;
  background: linear-gradient(135deg, var(--primary), #476cff);
  color: #ffffff;
  font-weight: 800;
  box-shadow: var(--shadow-primary);
}

.primary-btn:hover {
  filter: brightness(1.08);
}

.modal-close {
  margin-top: 14px;
  border: none;
  background: none;
  color: var(--text-muted);
  font-weight: 600;
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-x {
  position: absolute;
  top: 14px;
  right: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-secondary);
  font-size: 1.45rem;
  line-height: 1;
  transition:
    color 0.2s ease,
    background-color 0.2s ease,
    transform 0.2s ease;
}

.modal-x:hover {
  transform: rotate(90deg);
  background: rgba(255, 255, 255, 0.09);
  color: #ffffff;
}

/* TABLET AND DESKTOP */

@media (min-width: 768px) {
  .header {
    min-height: 84px;
    padding: 0 48px;
  }

  .nav-toggle {
    display: none;
  }

  .nav-menu {
    position: static;
    display: flex;
    min-width: auto;
    flex-direction: row;
    align-items: center;
    gap: 8px;
    padding: 0;
    border: none;
    border-radius: 0;
    background: none;
    box-shadow: none;
    opacity: 1;
    pointer-events: auto;
    transform: none;
    backdrop-filter: none;
  }

  .nav-menu li {
    width: auto;
  }

  .nav-menu a,
  .nav-menu button {
    width: auto;
    min-height: 42px;
    padding: 9px 14px;
  }

  .nav-menu .signup-btn {
    padding-inline: 20px;
  }

  .container {
    padding-top: 84px;
  }

  .converter {
    grid-template-columns: 1.4fr 0.8fr;
    padding: 32px;
  }

  .converter::after,
  .quick-convert,
  #convertBtn,
  #result {
    grid-column: 1 / -1;
  }

  .converter input {
    grid-column: 1 / -1;
  }
}

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

.about-page {
  width: min(100% - 32px, 1120px);
  margin: 0 auto;
  padding: 80px 0 100px;
}

.about-hero {
  max-width: 860px;
  margin: 0 auto 100px;
  text-align: center;
}

.about-hero__eyebrow,
.about-section__eyebrow {
  margin-bottom: 14px;
  color: var(--secondary);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.about-hero h1 {
  font-size: clamp(2.6rem, 7vw, 5.2rem);
  line-height: 1;
  letter-spacing: -0.06em;
  text-wrap: balance;
}

.about-hero__intro {
  max-width: 690px;
  margin: 28px auto 0;
  color: var(--text-secondary);
  font-size: 1.08rem;
  line-height: 1.8;
}

.about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 34px;
}

.about-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 24px;
  border-radius: 14px;
  font-weight: 800;
  transition:
    transform 0.2s ease,
    background-color 0.2s ease,
    border-color 0.2s ease,
    box-shadow 0.2s ease;
}

.about-btn:hover {
  transform: translateY(-2px);
}

.about-btn--primary {
  background: linear-gradient(135deg, var(--primary), #476cff);
  color: #ffffff;
  box-shadow: var(--shadow-primary);
}

.about-btn--secondary {
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
}

.about-btn--secondary:hover {
  border-color: var(--border-primary);
  background: rgba(124, 92, 255, 0.1);
}

.about-mission {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 100px;
  padding: 32px;
  border: 1px solid var(--border);
  border-radius: 30px;
  background:
    linear-gradient(
      145deg,
      rgba(24, 33, 66, 0.78),
      rgba(10, 14, 30, 0.84)
    );
  box-shadow: var(--shadow-card);
}

.about-mission__content h2,
.about-section-heading h2,
.about-disclaimer h2,
.about-cta h2 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.08;
  letter-spacing: -0.045em;
  text-wrap: balance;
}

.about-mission__content p:not(.about-section__eyebrow) {
  margin-top: 20px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.about-mission__visual {
  position: relative;
  display: grid;
  min-height: 320px;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 24px;
  background:
    radial-gradient(
      circle,
      rgba(124, 92, 255, 0.24),
      transparent 60%
    ),
    rgba(5, 8, 21, 0.6);
}

.about-coin {
  position: relative;
  z-index: 2;
  display: grid;
  width: 130px;
  height: 130px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 50%;
  background: linear-gradient(145deg, #ffbd47, #f18b21);
  color: #ffffff;
  font-size: 4.5rem;
  font-weight: 800;
  box-shadow:
    0 28px 60px rgba(241, 139, 33, 0.3),
    inset 0 3px 8px rgba(255, 255, 255, 0.35);
}

.about-orbit {
  position: absolute;
  border: 1px solid rgba(124, 92, 255, 0.32);
  border-radius: 50%;
}

.about-orbit--one {
  width: 220px;
  height: 220px;
}

.about-orbit--two {
  width: 290px;
  height: 290px;
  border-color: rgba(34, 199, 242, 0.2);
}

.about-features,
.about-process {
  margin-bottom: 100px;
}

.about-section-heading {
  max-width: 700px;
  margin-bottom: 40px;
}

.about-feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.about-feature-card {
  min-height: 260px;
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: 22px;
  background: rgba(17, 24, 48, 0.72);
  transition:
    transform 0.2s ease,
    border-color 0.2s ease,
    background-color 0.2s ease;
}

.about-feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-primary);
  background: rgba(24, 33, 66, 0.9);
}

.about-feature-card__number {
  display: block;
  margin-bottom: 50px;
  color: var(--secondary);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.about-feature-card h3 {
  margin-bottom: 12px;
  font-size: 1.35rem;
}

.about-feature-card p {
  color: var(--text-secondary);
  line-height: 1.75;
}

.about-steps {
  display: grid;
  gap: 16px;
}

.about-step {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: rgba(17, 24, 48, 0.6);
}

.about-step__icon {
  display: grid;
  width: 46px;
  min-width: 46px;
  height: 46px;
  place-items: center;
  border-radius: 14px;
  background: rgba(124, 92, 255, 0.16);
  color: var(--primary-hover);
  font-weight: 800;
}

.about-step h3 {
  margin-bottom: 6px;
}

.about-step p {
  color: var(--text-secondary);
  line-height: 1.7;
}

.about-disclaimer {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 100px;
  padding: 30px;
  border: 1px solid rgba(255, 189, 71, 0.2);
  border-radius: 24px;
  background: rgba(255, 189, 71, 0.06);
}

.about-disclaimer p:last-child {
  color: var(--text-secondary);
  line-height: 1.8;
}

.about-cta {
  padding: 64px 24px;
  border: 1px solid var(--border);
  border-radius: 30px;
  background:
    radial-gradient(
      circle at top,
      rgba(124, 92, 255, 0.24),
      transparent 55%
    ),
    rgba(17, 24, 48, 0.78);
  text-align: center;
  box-shadow: var(--shadow-card);
}

.about-cta h2 {
  max-width: 700px;
  margin: 0 auto 28px;
}

@media (min-width: 768px) {
  .about-mission {
    grid-template-columns: 1.1fr 0.9fr;
    padding: 46px;
  }

  .about-feature-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .about-disclaimer {
    grid-template-columns: 1fr 1fr;
    align-items: center;
    padding: 40px;
  }
}

@media (max-width: 520px) {
  .about-page {
    width: min(100% - 24px, 1120px);
    padding: 56px 0 72px;
  }

  .about-hero {
    margin-bottom: 72px;
  }

  .about-hero__actions {
    flex-direction: column;
  }

  .about-btn {
    width: 100%;
  }

  .about-mission,
  .about-feature-card,
  .about-step,
  .about-disclaimer {
    padding: 22px;
  }

  .about-mission,
  .about-features,
  .about-process,
  .about-disclaimer {
    margin-bottom: 72px;
  }

  .about-mission__visual {
    min-height: 260px;
  }

  .about-coin {
    width: 105px;
    height: 105px;
    font-size: 3.6rem;
  }

  .about-orbit--one {
    width: 180px;
    height: 180px;
  }

  .about-orbit--two {
    width: 235px;
    height: 235px;
  }

  .about-cta {
    padding: 48px 20px;
  }
}

.modal-message {
  display: none;
  margin: 0 0 14px;
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 0.85rem;
  line-height: 1.5;
  text-align: left;
}

.modal-message.show {
  display: block;
}

.modal-message[data-type="error"] {
  border: 1px solid rgba(255, 102, 122, 0.3);
  background: rgba(255, 102, 122, 0.1);
  color: #ff8b9b;
}

.modal-message[data-type="success"] {
  border: 1px solid rgba(76, 224, 163, 0.3);
  background: rgba(76, 224, 163, 0.1);
  color: #4ce0a3;
}

/* MOBILE */

@media (max-width: 480px) {
  .header {
    min-height: 68px;
    padding: 0 16px;
  }

  .logo {
    font-size: 1.2rem;
  }

  .container {
    width: min(100% - 24px, 1040px);
    padding: 48px 0 72px;
  }

  #btc-ticker {
    max-width: 100%;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px 10px;
  }

  #converter h1 {
    font-size: 2.3rem;
  }

  .converter-subtitle {
    max-width: 560px;
    margin: 20px auto 0;
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.7;
  }

  .converter {
    margin-top: 34px;
    padding: 18px;
    border-radius: 22px;
  }

  .converter input,
  .converter select {
    height: 56px;
  }

  .quick-convert button {
    flex: 1;
  }

  .modal {
    padding: 28px 20px 24px;
    border-radius: 20px;
  }
}