:root {
  --bg: #f3f4f6;
  --card-bg: #ffffff;
  --text-primary: #111827;
  --text-secondary: #6b7280;
  --border: #e5e7eb;
  --accent: #25d366;
  --accent-dark: #1da851;
  --accent-focus: #93c5fd;
  --error: #ef4444;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-full: 999px;
}
.card__title span {
  color: #25D366;
}
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text-primary);
}

.page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.card {
  width: 100%;
  max-width: 420px;
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 12px 32px rgba(17, 24, 39, 0.08);
  padding: 36px 32px;
  text-align: center;
}

.card__title {
  margin: 0 0 12px;
  font-size: 24px;
  line-height: 1.3;
  font-weight: 700;
  color: var(--text-primary);
}

.card__text {
  margin: 0 0 28px;
  font-size: 15px;
  line-height: 1.5;
  color: var(--text-secondary);
}

.form {
  text-align: left;
  display: flex;
  flex-direction: column;
}

.field-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.field-label__icon {
  color: var(--accent);
  flex-shrink: 0;
}

.phone-input {
  display: flex;
  align-items: stretch;
  gap: 10px;
}

.phone-input__code {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 30px 0 14px;
  min-width: 56px;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  background-color: #fafafa;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  -webkit-appearance: none;
  appearance: none;
  cursor: pointer;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><path d='M6 9l6 6 6-6'/></svg>");
  background-repeat: no-repeat;
  background-position: right 10px center;
  background-size: 14px;
}

.phone-input__code:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37, 211, 102, 0.15);
}

.phone-input__number {
  flex: 1;
  min-width: 0;
  padding: 0 18px;
  height: 48px;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  font-size: 15px;
  color: var(--text-primary);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.phone-input__number::placeholder {
  color: #b0b4bb;
}

.phone-input__number:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37, 211, 102, 0.15);
}

.phone-input.has-error .phone-input__number {
  border-color: var(--error);
}

.phone-input.has-error .phone-input__code {
  border-color: var(--error);
}

.field-error {
  display: none;
  margin-top: 8px;
  font-size: 13px;
  color: var(--error);
}

.field-error.visible {
  display: block;
}

.submit-btn {
  position: relative;
  overflow: hidden;
  margin-top: 22px;
  height: 50px;
  border: none;
  border-radius: var(--radius-full);
  background: var(--accent);
  color: #ffffff;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.1s ease;
}

.submit-btn:hover {
  background: var(--accent-dark);
}

.submit-btn:active {
  transform: scale(0.98);
}

.submit-btn:disabled {
  background: #a7e3bf;
  cursor: not-allowed;
}

.submit-btn__progress {
  position: absolute;
  inset: 0;
  width: 0;
  background: rgba(255, 255, 255, 0.28);
  transition: width 1.3s cubic-bezier(0.25, 0.8, 0.4, 1);
}

.submit-btn.is-loading .submit-btn__progress {
  width: 100%;
}

.submit-btn__label {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.submit-btn.is-loading .submit-btn__label::before {
  content: "";
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.5);
  border-top-color: #ffffff;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.disclaimer {
  margin: 14px 0 0;
  font-size: 12px;
  line-height: 1.5;
  text-align: center;
  color: var(--text-secondary);
}

@media (max-width: 480px) {
  .card {
    padding: 28px 22px;
  }

  .card__title {
    font-size: 21px;
  }
}