.signs-landing {
  max-width: 900px;
  margin: 40px auto;
  padding: 0 20px;
  color: #333;
}

.signs-landing .hero {
  text-align: center;
  padding: 60px 30px;
  background: linear-gradient(135deg, #f5f9ff 0%, #e8f2ff 100%);
  border-radius: 30px;
  margin-bottom: 30px;
  position: relative;
  overflow: hidden;
}

.signs-landing .hero::before {
  content: '';
  position: absolute;
  top: -50px;
  right: -50px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(52, 127, 220, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.signs-landing .hero h1 {
  font-size: 3rem;
  color: #1A2C3E;
  margin-bottom: 15px;
  position: relative;
}

.signs-landing .hero p {
  font-size: 1.2rem;
  color: #555;
  line-height: 1.6;
  margin-bottom: 30px;
  position: relative;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.signs-landing .about {
  background: #ffffff;
  padding: 35px 40px;
  border-radius: 24px;
  box-shadow: 0 10px 30px rgba(52, 127, 220, 0.08);
  margin-bottom: 30px;
  color: #333;
  font-size: 1.1rem;
  text-align: left;
  border: 2px solid #eef6fe;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.signs-landing .about:hover {
  border-color: #d4e6ff;
  box-shadow: 0 15px 40px rgba(52, 127, 220, 0.12);
}

.signs-landing .about h2 {
  color: #1A2C3E;
  margin-bottom: 20px;
  font-size: 1.7rem;
  position: relative;
  padding-left: 20px;
}

.signs-landing .about h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 30px;
  background: linear-gradient(180deg, #347fdc 0%, #2575fc 100%);
  border-radius: 3px;
}

.signs-landing .about ol {
  padding-left: 25px;
  font-size: 1.15rem;
  line-height: 2;
  color: #444;
}

.signs-landing .about ol li {
  padding-left: 10px;
  margin-bottom: 8px;
}

.signs-landing .about ol li::marker {
  color: #347fdc;
  font-weight: 700;
  font-size: 1.3rem;
}

.signs-landing .stats {
  text-align: center;
  font-size: 1.3rem;
  color: #347fdc;
  padding: 20px;
  background: #f5f9ff;
  border-radius: 20px;
  font-weight: 500;
}

.signs-landing .stats strong {
  font-size: 1.8rem;
  color: #1a4cb0;
  margin-left: 8px;
}

.btn-primary {
  display: inline-block;
  background: linear-gradient(135deg, #347fdc 0%, #2575fc 100%);
  color: #ffffff;
  font-weight: 700;
  padding: 16px 38px;
  border-radius: 40px;
  font-size: 1.1rem;
  box-shadow: 0 8px 20px rgba(52, 127, 220, 0.3);
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(52, 127, 220, 0.4);
}

.signs-list {
  max-width: 1200px;
  margin: 40px auto;
  padding: 0 20px;
}

.signs-list h1 {
  font-size: 2.4rem;
  color: #1A2C3E;
  margin-bottom: 30px;
  text-align: center;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
  justify-content: center;
  padding: 20px;
  background: #f5f9ff;
  border-radius: 20px;
}

.filters a {
  display: inline-block;
  padding: 12px 24px;
  background: #ffffff;
  color: #347fdc;
  border-radius: 30px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid transparent;
  transition: all 0.25s;
}

.filters a:hover {
  background: #347fdc;
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(52, 127, 220, 0.15);
}

.filters a.active {
  background: linear-gradient(135deg, #347fdc 0%, #2575fc 100%);
  color: #ffffff;
  box-shadow: 0 6px 16px rgba(52, 127, 220, 0.3);
}

.signs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 25px;
}

.sign-card {
  background: #ffffff;
  border-radius: 24px;
  padding: 20px;
  text-align: center;
  box-shadow: 0 6px 20px rgba(26, 44, 62, 0.06);
  transition: transform 0.3s, box-shadow 0.3s;
  position: relative;
  border: 2px solid #f0f6fe;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-width: 0; /* Защита от переполнения во flex/grid */
}

.sign-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #347fdc 0%, #2575fc 100%);
  opacity: 0;
  transition: opacity 0.3s;
}

.sign-card.unlocked:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(52, 127, 220, 0.18);
  border-color: #d4e6ff;
}

.sign-card.unlocked:hover::before {
  opacity: 1;
}

.sign-card.locked {
  background: #f8fafd;
  border-color: #e8eef7;
}

.sign-card.locked:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 25px rgba(26, 44, 62, 0.08);
}

.sign-card-image {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 140px;
  margin-bottom: 15px;
  border-radius: 16px;
  background: #fafcff;
  overflow: hidden;
  transition: background 0.3s;
  font-size: 0.85rem; /* Для alt текста, если картинка не загрузится */
  color: #666;
  text-align: center;
  padding: 10px;
  word-break: break-word;
}

.sign-card.unlocked:hover .sign-card-image {
  background: #f0f7ff;
}

.sign-card-image img {
  max-width: 90%;
  max-height: 90%;
  object-fit: contain;
  transition: transform 0.3s;
}

.sign-card.unlocked:hover .sign-card-image img {
  transform: scale(1.08);
}

.locked-image {
  background: linear-gradient(135deg, #eef4fc 0%, #e2edfa 100%);
  position: relative;
}

.lock-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 4px 12px rgba(52, 127, 220, 0.15);
  position: relative;
}

.lock-placeholder::before {
  content: '';
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  border: 2px dashed #c8dcf5;
  animation: rotate 20s linear infinite;
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.lock-icon {
  font-family: 'Climate Crisis', sans-serif;
  font-size: 2.2rem;
  color: #347fdc;
  line-height: 1;
  opacity: 0.7;
}

.sign-card h3 {
  font-size: 1.05rem;
  color: #1A2C3E;
  margin: auto 0 12px 0;
  line-height: 1.3;
  width: 100%;
  /* Защита от длинных слов */
  word-wrap: break-word;
  overflow-wrap: anywhere;
  hyphens: auto;
}

.sign-card.locked h3 {
  color: #8a9cb3;
  font-style: italic;
}

.sign-card a {
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.badge-unlocked,
.badge-locked {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-top: auto; /* Прижимает бейдж к низу */
}

.badge-unlocked {
  background: linear-gradient(135deg, #d4f4dd 0%, #b8ecd0 100%);
  color: #1e8449;
  box-shadow: 0 3px 10px rgba(30, 132, 73, 0.15);
}

.badge-locked {
  background: #e8eef7;
  color: #8a9cb3;
}

.sign-detail {
  max-width: 800px;
  margin: 40px auto;
  padding: 0 20px;
  color: #333;
}

.sign-detail > a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #347fdc;
  font-weight: 600;
  margin-bottom: 25px;
  padding: 8px 16px;
  border-radius: 30px;
  transition: background 0.2s;
}

.sign-detail > a:hover {
  background: #eef6fe;
}

.sign-detail h1 {
  font-size: 2.4rem;
  color: #1A2C3E;
  margin-bottom: 30px;
  text-align: center;
  word-wrap: break-word;
  overflow-wrap: anywhere;
}

.sign-image {
  text-align: center;
  margin-bottom: 40px;
  padding: 30px;
  background: linear-gradient(135deg, #f5f9ff 0%, #eef6fe 100%);
  border-radius: 24px;
}

.sign-image img {
  max-width: 320px;
  width: 100%;
  height: auto;
  border-radius: 20px;
  box-shadow: 0 12px 30px rgba(26, 44, 62, 0.12);
}

.sign-image p {
  margin-top: 20px;
  color: #888;
  font-style: italic;
  font-size: 1.05rem;
}

.sign-info {
  background: #ffffff;
  padding: 35px;
  border-radius: 24px;
  box-shadow: 0 8px 24px rgba(26, 44, 62, 0.06);
  border: 2px solid #f0f6fe;
}

.sign-info h2 {
  font-size: 1.5rem;
  color: #1A2C3E;
  margin-top: 20px;
  margin-bottom: 12px;
  position: relative;
  padding-left: 20px;
}

.sign-info h2:first-child {
  margin-top: 0;
}

.sign-info h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 5px;
  height: 24px;
  background: linear-gradient(180deg, #347fdc 0%, #2575fc 100%);
  border-radius: 3px;
}

.sign-info p {
  font-size: 1.1rem;
  line-height: 1.8;
  color: #444;
  margin-bottom: 10px;
  word-wrap: break-word;
  overflow-wrap: anywhere;
}

.sign-locked {
  text-align: center;
  background: linear-gradient(135deg, #f5f9ff 0%, #eef6fe 100%);
  padding: 40px 30px;
  border-radius: 24px;
  margin-top: 20px;
  border: 2px dashed #c8dcf5;
}

.sign-locked p {
  font-size: 1.15rem;
  margin-bottom: 25px;
  color: #555;
}

.sign-test {
  max-width: 700px;
  margin: 40px auto;
  padding: 0 20px;
  color: #333;
}

.sign-test > a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #347fdc;
  font-weight: 600;
  margin-bottom: 25px;
  padding: 8px 16px;
  border-radius: 30px;
  transition: background 0.2s;
}

.sign-test > a:hover {
  background: #eef6fe;
}

.sign-test h1 {
  font-size: 2.2rem;
  color: #1A2C3E;
  margin-bottom: 30px;
  text-align: center;
}

.test-image {
  text-align: center;
  margin-bottom: 40px;
  padding: 25px;
  background: linear-gradient(135deg, #f5f9ff 0%, #eef6fe 100%);
  border-radius: 24px;
}

.test-image img {
  max-width: 250px;
  width: 100%;
  height: auto;
  border-radius: 20px;
  box-shadow: 0 10px 25px rgba(26, 44, 62, 0.1);
}

.sign-test .question {
  font-size: 1.3rem;
  font-weight: 600;
  color: #1A2C3E;
  margin-bottom: 25px;
  text-align: center;
  padding: 20px;
  background: #f8fafd;
  border-radius: 16px;
  border-left: 4px solid #347fdc;
  word-wrap: break-word;
  overflow-wrap: anywhere;
}

.sign-test .options {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 30px;
}

.sign-test .options label {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  background: #f8fafd;
  border: 2px solid #e2edf7;
  border-radius: 16px;
  cursor: pointer;
  transition: all 0.25s;
}

.sign-test .options label:hover {
  border-color: #347fdc;
  background: #f0f7ff;
  transform: translateX(4px);
  box-shadow: 0 4px 12px rgba(52, 127, 220, 0.1);
}

.sign-test .options label:has(input:checked) {
  border-color: #347fdc;
  background: linear-gradient(135deg, #eef6fe 0%, #e0edff 100%);
  box-shadow: 0 6px 16px rgba(52, 127, 220, 0.15);
}

.sign-test .options input[type="radio"] {
  accent-color: #347fdc;
  width: 20px;
  height: 20px;
  cursor: pointer;
  flex-shrink: 0;
}

.sign-test .options span {
  font-size: 1.05rem;
  color: #333;
  line-height: 1.5;
  word-wrap: break-word;
  overflow-wrap: anywhere;
}

.sign-test .error {
  background: #fee8e8;
  color: #d32f2f;
  padding: 14px 24px;
  border-radius: 14px;
  margin-bottom: 20px;
  font-weight: 600;
  border-left: 4px solid #d32f2f;
}

.sign-test button[type="submit"] {
  display: block;
  width: 100%;
  padding: 18px;
  background: linear-gradient(135deg, #347fdc 0%, #2575fc 100%);
  color: #ffffff;
  border: none;
  border-radius: 40px;
  font-size: 1.15rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 8px 20px rgba(52, 127, 220, 0.3);
  transition: transform 0.2s, box-shadow 0.2s;
}

.sign-test button[type="submit"]:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(52, 127, 220, 0.4);
}

@media (max-width: 768px) {
  .signs-landing .hero {
    padding: 40px 20px;
  }

  .signs-landing .hero h1 { font-size: 2.2rem; }

  .signs-landing .about {
    padding: 25px 20px;
  }

  .signs-list h1,
  .sign-detail h1,
  .sign-test h1 { font-size: 1.8rem; }

  .filters {
    padding: 15px;
    gap: 8px;
  }

  .filters a {
    padding: 10px 18px;
    font-size: 0.9rem;
  }

  .signs-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 15px;
  }

  .sign-card { padding: 15px; }
  .sign-card-image { height: 110px; }
  .sign-card h3 { font-size: 0.95rem; }

  .lock-placeholder {
    width: 55px;
    height: 55px;
  }

  .lock-icon { font-size: 1.7rem; }

  .sign-image { padding: 20px; }
  .sign-image img { max-width: 240px; }

  .sign-info { padding: 25px 20px; }

  .test-image { padding: 20px; }
  .test-image img { max-width: 200px; }

  .sign-test .question { font-size: 1.1rem; }

  .sign-test .options span { font-size: 0.95rem; }
}

@media (max-width: 400px) {
  .signs-list {
    padding: 0 10px;
  }

  .signs-grid {
    /* Изменено на minmax(0, 1fr), чтобы контент не раздвигал колонки */
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  .sign-card {
    padding: 10px;
    border-radius: 16px;
  }

  .sign-card-image {
    height: 90px;
    border-radius: 10px;
    margin-bottom: 10px;
  }

  .sign-card h3 {
    font-size: 0.85rem;
    line-height: 1.2;
  }

  .badge-unlocked,
  .badge-locked {
    font-size: 0.65rem;
    padding: 4px 12px;
    letter-spacing: 0.5px;
  }

  .lock-placeholder {
    width: 45px;
    height: 45px;
  }

  .lock-icon { font-size: 1.4rem; }

  .sign-detail h1,
  .sign-test h1 { font-size: 1.5rem; }

  .signs-landing .hero h1 { font-size: 1.8rem; }
}