:root {
  --bg: var(--tg-theme-bg-color, #ffffff);
  --text: var(--tg-theme-text-color, #000000);
  --hint: var(--tg-theme-hint-color, #999999);
  --btn-bg: var(--tg-theme-button-color, #3390ec);
  --btn-text: var(--tg-theme-button-text-color, #ffffff);
  --secondary-bg: var(--tg-theme-secondary-bg-color, #f0f2f5);
  --card-bg: var(--tg-theme-bg-color, #ffffff);
  --border: var(--tg-theme-hint-color, #e0e0e0);
}

* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Roboto', 'Segoe UI', sans-serif;
  background: var(--secondary-bg);
  color: var(--text);
  padding-bottom: 100px;
  line-height: 1.5;
}

.container { padding: 16px; max-width: 600px; margin: 0 auto; }
header { margin-bottom: 16px; }
h1 { font-size: 22px; font-weight: 700; }
.hint { color: var(--hint); font-size: 14px; margin-top: 4px; }

.filters, .calculator {
  background: var(--card-bg); padding: 16px; border-radius: 16px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06); margin-bottom: 16px;
}
.filters label, .input-group label { display: block; font-size: 14px; margin-bottom: 6px; font-weight: 500; }
select, input {
  width: 100%; padding: 12px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--secondary-bg);
  color: var(--text); font-size: 15px; margin-bottom: 12px;
  outline: none; transition: border 0.2s;
}
select:focus, input:focus { border-color: var(--btn-bg); }
input[type="range"] { margin: 8px 0 16px; padding: 0; height: 6px; }

.list { display: flex; flex-direction: column; gap: 12px; margin-bottom: 20px; }
.card {
  background: var(--card-bg); padding: 16px; border-radius: 14px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05); cursor: pointer; transition: transform 0.2s;
}
.card:active { transform: scale(0.98); }
.card-meta { display: flex; justify-content: space-between; align-items: center; margin-bottom: 4px; font-size: 13px; color: var(--hint); }
.card-yield { background: #e6f4ea; color: #1e7e34; padding: 3px 8px; border-radius: 6px; font-weight: 600; font-size: 13px; }
.card h3 { font-size: 16px; margin-bottom: 4px; }
.card-price { font-size: 18px; font-weight: 700; color: var(--btn-bg); margin-bottom: 4px; }
.card-btn {
  width: 100%; padding: 10px; margin-top: 8px; background: var(--secondary-bg);
  border: none; border-radius: 8px; color: var(--btn-bg); font-weight: 500; cursor: pointer;
}

.tg-btn {
  width: 100%; padding: 14px; background: var(--btn-bg); color: var(--btn-text);
  border: none; border-radius: 12px; font-size: 16px; font-weight: 600; cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
}
.tg-btn:active { opacity: 0.85; transform: scale(0.98); }

.result {
  margin-top: 16px; padding: 14px; background: var(--secondary-bg);
  border-radius: 10px; border-left: 4px solid var(--btn-bg);
  animation: slideIn 0.3s ease-out;
}
.res-row { display: flex; justify-content: space-between; padding: 4px 0; font-size: 14px; }
.res-row span { font-weight: 700; }
.hidden { display: none; }

@keyframes slideIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 400px) { .calc-grid { grid-template-columns: 1fr; } }