/* static/css/login-vkid-custom.css */
:root {
  --button-bg: #3684ce;
  --button-bg-hover: #2b6cb0;
}

/* 🌙 Тёмная тема */
@media (prefers-color-scheme: dark) {
  :root {
    --button-bg: #4776e6;
    --button-bg-hover: #3b5bc5;
  }

  .social-login-header img.social-icon,
  .social-login-header .social-icon.vk {
    filter: brightness(1.2) contrast(1.1); /* улучшение видимости иконки на тёмном фоне */
  }
}

/* 🧱 БАЗОВЫЕ СТИЛИ */
.social-login-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 90vh;
  background: linear-gradient(135deg, var(--bg-gradient-start), var(--bg-gradient-end));
  padding: 20px;
}

.social-login-card {
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  padding: 40px 32px;
  width: 100%;
  max-width: 420px;
  text-align: center;
  box-sizing: border-box;
  transition: background 0.3s ease, color 0.3s ease;
}

.social-login-header {
  margin-bottom: 28px;
}

.social-login-header img.social-icon,
.social-login-header .social-icon.vk {
  width: 64px;
  height: 64px;
  margin-bottom: 16px;
  object-fit: contain;
  transition: transform 0.3s ease;
}

.social-login-header img.social-icon:hover,
.social-login-header .social-icon.vk:hover {
  transform: scale(1.1);
}

.social-login-header h2 {
  margin: 0;
  font-size: 1.75em;
  color: var(--text-main);
  line-height: 1.2;
}

.social-login-message {
  margin-bottom: 30px;
}

.info-text {
  font-size: 1em;
  line-height: 1.6;
  margin-bottom: 20px;
  word-wrap: break-word;
}

.social-login-form {
  margin: 0;
}

.vk-continue-btn {
  background-color: var(--button-bg);
  color: white;
  border: none;
  padding: 12px 32px;
  font-size: 1em;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  width: 100%;
  transition: background 0.2s, transform 0.1s, box-shadow 0.2s;
  touch-action: manipulation; /* улучшает отклик на мобильных */
  -webkit-tap-highlight-color: transparent;
}

.vk-continue-btn:hover {
  background-color: var(--button-bg-hover);
  transform: translateY(-1px);
}

.vk-continue-btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.vk-continue-btn:focus {
  outline: 2px solid var(--button-bg-hover);
  outline-offset: 2px;
}

.social-login-footer {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
}

.social-login-footer p {
  font-size: 0.9em;
  color: var(--text-secondary);
  margin: 0;
}

.social-login-footer a {
  color: var(--link-color);
  text-decoration: none;
  font-weight: 500;
}

.social-login-footer a:hover,
.social-login-footer a:focus {
  text-decoration: underline;
}

/* 📱 АДАПТИВНОСТЬ ДЛЯ МОБИЛЬНЫХ УСТРОЙСТВ */
@media (max-width: 640px) {
  .social-login-container {
    min-height: 100vh;
    padding: 16px;
  }

  .social-login-card {
    padding: 32px 24px;
    max-width: 100%;
  }

  .social-login-header h2 {
    font-size: 1.5em;
  }

  .info-text {
    font-size: 0.95em;
  }

  .vk-continue-btn {
    padding: 14px 28px;
    font-size: 1em;
  }

  .social-login-header img.social-icon,
  .social-login-header .social-icon.vk {
    width: 56px;
    height: 56px;
    margin-bottom: 12px;
  }
}

@media (max-width: 480px) {
  .social-login-header h2 {
    font-size: 1.3em;
  }

  .info-text {
    font-size: 0.9em;
    margin-bottom: 16px;
  }

  .vk-continue-btn {
    padding: 12px 24px;
    font-size: 0.95em;
  }

  .social-login-footer {
    padding-top: 16px;
  }
}