:root {
  --telegram-blue: #229ed9;
  --telegram-blue-dark: #1685bd;
  --whatsapp-green: #25d366;
  --whatsapp-green-dark: #1fb457;
  --text: #1f2937;
  --muted: #667085;
  --surface: #ffffff;
  --line: #d8e0e8;
  --shadow: 0 24px 70px rgba(15, 23, 42, 0.22);
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  font-family: Arial, sans-serif;
  color: var(--text);
  background: #f4f7fb;
}

.demo-page {
  min-height: 0;
  padding: 0;
}

.contact-widget {
  position: fixed;
  right: max(18px, env(safe-area-inset-right));
  bottom: max(18px, env(safe-area-inset-bottom));
  z-index: 900;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-end;
}

.contact-button,
.contact-link,
.copy-button,
.contact-modal__close {
  border: 0;
  cursor: pointer;
  font: inherit;
}

.contact-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 245px;
  min-height: 52px;
  padding: 0 22px;
  border-radius: 8px;
  color: #ffffff;
  font-weight: 700;
  white-space: nowrap;
  transition: transform 0.18s ease, background 0.18s ease, box-shadow 0.18s ease;
}

.contact-button--telegram {
  background: var(--telegram-blue);
  box-shadow: 0 12px 26px rgba(34, 158, 217, 0.3);
}

.contact-button--telegram:hover {
  background: var(--telegram-blue-dark);
  transform: translateY(-1px);
  box-shadow: 0 16px 30px rgba(34, 158, 217, 0.34);
}

.contact-button--whatsapp {
  background: var(--whatsapp-green);
  box-shadow: 0 12px 26px rgba(37, 211, 102, 0.28);
}

.contact-button--whatsapp:hover {
  background: var(--whatsapp-green-dark);
  transform: translateY(-1px);
  box-shadow: 0 16px 30px rgba(37, 211, 102, 0.32);
}

.contact-button:focus-visible,
.contact-link:focus-visible,
.copy-button:focus-visible,
.contact-modal__close:focus-visible {
  outline: 3px solid rgba(34, 158, 217, 0.28);
  outline-offset: 3px;
}

.contact-button__icon,
.contact-modal__badge {
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
}

.contact-button__icon {
  width: 24px;
  height: 24px;
}

.contact-button svg,
.contact-modal__badge svg,
.contact-modal__close svg {
  width: 100%;
  height: 100%;
  fill: currentColor;
}

.contact-modal[hidden] {
  display: none;
}

.contact-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-items: center;
  padding: 20px;
}

.contact-modal__overlay {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.56);
}

.contact-modal__panel {
  position: relative;
  width: min(100%, 480px);
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.contact-modal__close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  color: #475467;
  background: #f2f4f7;
  transition: background 0.18s ease, color 0.18s ease;
}

.contact-modal__close:hover {
  color: var(--text);
  background: #e6ebf1;
}

.contact-modal__close svg {
  width: 18px;
  height: 18px;
}

.contact-modal__badge {
  width: 52px;
  height: 52px;
  margin-bottom: 18px;
  border-radius: 8px;
  color: #ffffff;
  background: var(--telegram-blue);
}

.contact-modal__badge[data-contact-service="whatsapp"] {
  background: var(--whatsapp-green);
}

.contact-modal__badge svg {
  width: 28px;
  height: 28px;
}

.contact-modal h2 {
  margin: 0 42px 10px 0;
  font-size: 26px;
  line-height: 1.2;
  letter-spacing: 0;
}

.contact-modal p {
  margin: 0;
}

.contact-modal #contact-description {
  color: var(--muted);
  line-height: 1.55;
}

.contact-message {
  margin: 22px 0;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fafc;
}

.contact-message__label {
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.contact-message__text {
  line-height: 1.5;
}

.contact-modal__actions {
  display: flex;
  gap: 12px;
  align-items: center;
}

.contact-link,
.copy-button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
}

.contact-link {
  color: #ffffff;
  background: var(--telegram-blue);
}

.contact-link:hover {
  background: var(--telegram-blue-dark);
}

.contact-link[data-contact-service="whatsapp"] {
  background: var(--whatsapp-green);
}

.contact-link[data-contact-service="whatsapp"]:hover {
  background: var(--whatsapp-green-dark);
}

.copy-button {
  color: var(--text);
  background: #eef2f6;
}

.copy-button:hover {
  background: #e2e8f0;
}

.contact-modal__status {
  min-height: 20px;
  margin-top: 12px;
  color: var(--telegram-blue-dark);
  font-size: 14px;
}

body.contact-modal-open {
  overflow: hidden;
}

@media (max-width: 520px) {
  .demo-page {
    padding: 20px 16px 150px;
  }

  .contact-widget {
    right: max(12px, env(safe-area-inset-right));
    bottom: max(12px, env(safe-area-inset-bottom));
    left: max(12px, env(safe-area-inset-left));
    align-items: stretch;
    gap: 10px;
  }

  .contact-button {
    width: 100%;
    min-height: 50px;
    padding: 0 16px;
  }

  .contact-modal__panel {
    padding: 24px;
  }

  .contact-modal h2 {
    font-size: 22px;
  }

  .contact-modal__actions {
    align-items: stretch;
    flex-direction: column;
  }

  .contact-link,
  .copy-button {
    width: 100%;
  }
}

@media (min-width: 521px) and (max-width: 1024px) {
  .demo-page {
    padding-bottom: 140px;
  }

  .contact-widget {
    right: 18px;
    bottom: 18px;
  }

  .contact-button {
    width: 230px;
  }
}