:root {
  --bg: #0f172a;
  --card-bg: #1e293b;
  --border: #334155;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --accent: #38bdf8;
  --danger: #f87171;
  --warning: #fbbf24;
  --ok: #4ade80;
  --radius: 10px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.app {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 16px 64px;
}

header h1 {
  margin-bottom: 4px;
  font-size: 1.8rem;
}

.subtitle {
  color: var(--text-muted);
  margin-top: 0;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}

.card h2 {
  margin-top: 0;
  font-size: 1.1rem;
  color: var(--accent);
}

.help-text {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: -6px;
  margin-bottom: 14px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 12px;
  min-width: 0;
}

.field label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

input, select {
  width: 100%;
  min-width: 0;
  background: #0f172a;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 10px;
  border-radius: 6px;
  font-size: 0.95rem;
}

input:focus, select:focus {
  outline: 2px solid var(--accent);
}

input[type="number"] {
  -moz-appearance: textfield;
}

input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.item-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 12px;
}

.item-row {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 8px;
  align-items: center;
  background: #16213a;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.item-row.drink-row {
  grid-template-columns: 1fr 1fr 1fr 1fr auto;
}

.item-row input {
  width: 100%;
}

.item-row .meta {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.btn-remove {
  background: transparent;
  border: 1px solid var(--danger);
  color: var(--danger);
  border-radius: 6px;
  padding: 6px 10px;
  cursor: pointer;
  font-size: 0.85rem;
}

.btn-remove:hover {
  background: var(--danger);
  color: #1e293b;
}

.btn-add {
  background: var(--accent);
  border: none;
  color: #0f172a;
  font-weight: 600;
  padding: 10px 14px;
  border-radius: 8px;
  cursor: pointer;
}

.btn-add:hover {
  filter: brightness(1.1);
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 8px;
  cursor: pointer;
  white-space: nowrap;
}

.btn-secondary:hover {
  background: var(--accent);
  color: #0f172a;
}

.input-with-button {
  display: flex;
  gap: 8px;
}

.input-with-button input {
  flex: 1;
  min-width: 0;
}

.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.75);
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 10;
}

.modal-overlay.open {
  display: flex;
}

.modal {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  max-width: 480px;
  width: 100%;
}

.modal h3 {
  margin-top: 0;
  color: var(--accent);
}

.modal-steps {
  padding-left: 20px;
  line-height: 1.6;
}

.modal-actions {
  display: flex;
  gap: 10px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.modal-actions .btn-add {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}

@media (max-width: 520px) {
  .input-with-button {
    flex-direction: column;
    align-items: stretch;
  }
}

.add-drink {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: 10px;
  margin-bottom: 16px;
}

.add-drink .btn-add {
  grid-column: 1 / -1;
}

.add-carrier {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 16px;
}

.add-carrier .btn-add {
  grid-column: 1 / -1;
}

.item-row.carrier-row {
  grid-template-columns: 1fr 1fr 1fr 1fr auto;
}

.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 16px;
}

.result-grid div {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.result-grid span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.result-grid strong {
  font-size: 1.1rem;
}

.result-grid .total strong {
  font-size: 1.3rem;
  color: var(--accent);
}

.progress-bar {
  width: 100%;
  height: 18px;
  background: #0f172a;
  border-radius: 9px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: var(--ok);
  transition: width 0.2s ease, background 0.2s ease;
}

.progress-fill.warning {
  background: var(--warning);
}

.progress-fill.danger {
  background: var(--danger);
}

.status-message {
  text-align: center;
  font-weight: 600;
  margin-top: 12px;
  white-space: pre-line;
}

.status-message.ok {
  color: var(--ok);
}

.status-message.warning {
  color: var(--warning);
}

.status-message.danger {
  color: var(--danger);
}

footer {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-top: 24px;
}

@media (max-width: 640px) {
  .add-drink {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 520px) {
  .add-drink {
    grid-template-columns: 1fr;
  }
  .item-row.drink-row {
    grid-template-columns: 1fr 1fr;
  }
  .add-carrier {
    grid-template-columns: 1fr;
  }
  .item-row.carrier-row {
    grid-template-columns: 1fr 1fr;
  }
}