/**
 * ============================================================
 *  style.css — Полные стили лендинга продажи домена
 *  Mobile-first, адаптив: 320px → 4K
 *  Все ключевые стили продублированы inline в <head> (критический CSS).
 *  Этот файл содержит остальные стили и адаптивные дополнения.
 * ============================================================
 */

/* ---------- База (переопределение / дополнение inline) ---------- */
html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    Oxygen, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  padding: 1rem;
}

/* ---------- Контейнер ---------- */
.page {
  width: 100%;
  max-width: 600px;
}

/* ---------- Карточка ---------- */
.card {
  background: var(--color-surface);
  border-radius: 1.25rem;
  padding: 2rem 1.5rem;
  box-shadow: var(--color-shadow);
  border: 1px solid var(--color-border);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

@media (min-width: 480px) {
  .card {
    padding: 2.5rem 2rem;
  }
}

@media (min-width: 640px) {
  .card {
    padding: 3rem 2.5rem;
    border-radius: 1.5rem;
  }
}

/* ---------- Заголовок-домен ---------- */
.domain-name {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-accent);
  text-align: center;
  word-break: break-all;
  margin-bottom: 0.75rem;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

@media (min-width: 375px) {
  .domain-name {
    font-size: 2rem;
  }
}

@media (min-width: 480px) {
  .domain-name {
    font-size: 2.5rem;
  }
}

@media (min-width: 768px) {
  .domain-name {
    font-size: 3rem;
    margin-bottom: 1rem;
  }
}

/* ---------- Подзаголовок ---------- */
.subheading {
  text-align: center;
  color: var(--color-text-secondary);
  margin-bottom: 1.75rem;
  font-size: 0.9rem;
  line-height: 1.5;
}

@media (min-width: 480px) {
  .subheading {
    font-size: 0.95rem;
    margin-bottom: 2rem;
  }
}

@media (min-width: 768px) {
  .subheading {
    font-size: 1.05rem;
    margin-bottom: 2.25rem;
  }
}

/* ---------- Группа поля ---------- */
.form-group {
  margin-bottom: 1.125rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.35rem;
  font-weight: 500;
  font-size: 0.8125rem;
  color: var(--color-text);
}

.form-group label small {
  font-weight: 400;
  color: var(--color-text-secondary);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.7rem 0.875rem;
  border: 1.5px solid var(--color-border);
  border-radius: 0.75rem;
  font-size: 0.9375rem;
  font-family: inherit;
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-secondary);
  opacity: 0.55;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.form-group textarea {
  resize: vertical;
  min-height: 105px;
  line-height: 1.55;
}

@media (min-width: 480px) {
  .form-group input,
  .form-group textarea {
    padding: 0.75rem 1rem;
    font-size: 1rem;
  }
  .form-group textarea {
    min-height: 115px;
  }
}

/* ---------- Ошибки валидации ---------- */
.form-group .field-error {
  color: var(--color-error);
  font-size: 0.775rem;
  margin-top: 0.25rem;
  display: none;
  line-height: 1.3;
}

.form-group.error .field-error {
  display: block;
}

.form-group.error input,
.form-group.error textarea {
  border-color: var(--color-error);
}

.form-group.error input:focus,
.form-group.error textarea:focus {
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.12);
}

/* ---------- Чекбокс согласия ---------- */
.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin-bottom: 1.375rem;
  position: relative;
}

.checkbox-group.error .field-error {
  display: block;
  position: absolute;
  bottom: -1.15rem;
  left: 0;
  font-size: 0.775rem;
  color: var(--color-error);
}

.checkbox-group input[type="checkbox"] {
  width: 1.125rem;
  height: 1.125rem;
  margin-top: 0.1rem;
  flex-shrink: 0;
  accent-color: var(--color-accent);
  cursor: pointer;
}

.checkbox-group input[type="checkbox"]:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

.checkbox-group label {
  font-size: 0.775rem;
  color: var(--color-text-secondary);
  cursor: pointer;
  line-height: 1.45;
}

.checkbox-group a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color 0.15s;
}

.checkbox-group a:hover {
  color: var(--color-accent-hover);
}

@media (min-width: 480px) {
  .checkbox-group label {
    font-size: 0.8rem;
  }
}

/* ---------- Кнопка отправки ---------- */
.btn {
  display: block;
  width: 100%;
  padding: 0.8rem 1.5rem;
  background: var(--color-accent);
  color: #ffffff;
  font-size: 0.9375rem;
  font-weight: 600;
  border: none;
  border-radius: 0.75rem;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.12s ease, opacity 0.2s ease,
    box-shadow 0.2s ease;
  font-family: inherit;
  letter-spacing: 0.01em;
}

.btn:hover {
  background: var(--color-accent-hover);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

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

.btn:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

@media (min-width: 480px) {
  .btn {
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
  }
}

/* ---------- Статус-сообщение ---------- */
.status-msg {
  text-align: center;
  font-size: 0.85rem;
  font-weight: 500;
  margin-top: 0.875rem;
  min-height: 1.4rem;
  transition: color 0.2s ease, opacity 0.2s ease;
  line-height: 1.4;
}

.status-msg.success {
  color: var(--color-success);
}

.status-msg.error {
  color: var(--color-error);
}

.status-msg.sending {
  color: var(--color-accent);
}

@media (min-width: 480px) {
  .status-msg {
    font-size: 0.9rem;
    margin-top: 1rem;
  }
}

/* ---------- Honeypot ---------- */
.honeypot {
  position: absolute;
  left: -9999px;
  opacity: 0;
  height: 0;
  width: 0;
  overflow: hidden;
  pointer-events: none;
}

/* ---------- Футер ---------- */
.footer {
  text-align: center;
  margin-top: 1.25rem;
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

@media (min-width: 480px) {
  .footer {
    margin-top: 1.5rem;
    font-size: 0.8rem;
  }
}

/* ---------- Анимация появления ---------- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.card {
  animation: fadeInUp 0.35s ease-out both;
}

/* ---------- 4K / сверхширокие экраны ---------- */
@media (min-width: 2560px) {
  html {
    font-size: 20px;
  }
  .page {
    max-width: 700px;
  }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ---------- Печать ---------- */
@media print {
  body {
    background: #fff;
    color: #000;
  }
  .card {
    box-shadow: none;
    border: 1px solid #ccc;
  }
  .btn {
    display: none;
  }
}
