* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #f5f5f5;
  color: #111;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 24px 16px;
}

.card {
  background: #fff;
  border-radius: 20px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  padding: 24px;
}

.btn {
  display: inline-block;
  padding: 12px 18px;
  border-radius: 12px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  font-weight: 600;
}

.btn-primary {
  background: #111;
  color: #fff;
}

.btn-secondary {
  background: #fff;
  color: #111;
  border: 1px solid #ddd;
}

.input, .textarea {
  width: 100%;
  border: 1px solid #ccc;
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 16px;
}

.textarea {
  min-height: 110px;
  resize: vertical;
}

.grid {
  display: grid;
  gap: 16px;
}

.wall-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.wall-card {
  background: #fff;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}

.wall-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  display: block;
}

.wall-card-body {
  padding: 14px;
}

.emoji-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.emoji-option {
  font-size: 28px;
  padding: 10px;
  border-radius: 14px;
  border: 1px solid #ddd;
  background: #fff;
  cursor: pointer;
  text-align: center;
}

.emoji-option.active {
  border-color: #111;
  background: #f1f1f1;
}

.preview img {
  width: 100%;
  max-width: 320px;
  border-radius: 18px;
  display: block;
}

.alert {
  padding: 12px 14px;
  border-radius: 12px;
  margin-bottom: 16px;
}

.alert-error {
  background: #fff0f0;
  color: #9b1c1c;
}

.alert-success {
  background: #eefaf0;
  color: #176534;
}

.admin-actions form {
  display: inline-block;
  margin-right: 8px;
}

.wall-grid.premium-wall {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 22px;
}

.wall-card.premium-card {
  transform: translateY(0);
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.wall-card.premium-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 10px 28px rgba(0,0,0,0.14);
}

.wall-card.premium-card img {
  aspect-ratio: 4 / 5;
}

.wall-card.highlight-card {
  border: 2px solid rgba(0,0,0,0.08);
  box-shadow: 0 10px 30px rgba(0,0,0,0.12);
}

.wall-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: #0f766e;
  background: rgba(15,118,110,0.10);
  padding: 8px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
}