/* ---------- Base ---------- */
:root {
  --bg: #0b0d12;
  --bg-soft: #11141b;
  --panel: #161a23;
  --panel-2: #1c2230;
  --border: #232a3a;
  --border-strong: #2e3650;
  --text: #e7eaf2;
  --text-muted: #8a93a8;
  --text-faint: #5b637a;
  --accent: #7c5cff;
  --accent-2: #4ea1ff;
  --accent-grad: linear-gradient(135deg, #7c5cff 0%, #4ea1ff 100%);
  --good: #3ddc97;
  --warn: #ffb454;
  --bad: #ff6b6b;
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
  --radius: 14px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(124, 92, 255, 0.18), transparent 60%),
    radial-gradient(1000px 500px at -10% 10%, rgba(78, 161, 255, 0.12), transparent 60%),
    var(--bg);
  color: var(--text);
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  font-size: 15px;
  line-height: 1.5;
  min-height: 100vh;
}

button,
input,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

/* ---------- Top bar ---------- */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 32px;
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  background: rgba(11, 13, 18, 0.7);
  z-index: 10;
}

.brand {
  display: flex;
  gap: 14px;
  align-items: center;
}

.brand .logo {
  font-size: 32px;
  filter: drop-shadow(0 2px 8px rgba(124, 92, 255, 0.4));
}

.brand h1 {
  margin: 0;
  font-size: 20px;
  letter-spacing: -0.01em;
  background: var(--accent-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 700;
}

.brand .tagline {
  margin: 2px 0 0;
  color: var(--text-muted);
  font-size: 13px;
}

.actions {
  display: flex;
  gap: 8px;
}

/* ---------- Buttons ---------- */
button {
  cursor: pointer;
  border: 1px solid var(--border-strong);
  background: var(--panel-2);
  color: var(--text);
  border-radius: 10px;
  padding: 10px 16px;
  font-weight: 500;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

button:hover:not(:disabled) {
  border-color: var(--accent);
  transform: translateY(-1px);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

button.primary {
  background: var(--accent-grad);
  border: none;
  color: white;
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(124, 92, 255, 0.35);
}

button.primary:hover:not(:disabled) {
  box-shadow: 0 6px 24px rgba(124, 92, 255, 0.5);
}

button.ghost {
  background: transparent;
}

button.danger {
  color: var(--bad);
}

button.danger:hover {
  border-color: var(--bad);
}

button.small {
  padding: 8px 12px;
  font-size: 13px;
}

button.icon {
  padding: 6px 9px;
  background: transparent;
  border-color: transparent;
  color: var(--text-muted);
}

button.icon:hover {
  color: var(--bad);
  border-color: var(--border);
}

/* ---------- Layout ---------- */
.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 32px 80px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.card {
  background: linear-gradient(180deg, var(--panel) 0%, var(--bg-soft) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 26px;
  box-shadow: var(--shadow);
}

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 18px;
}

.card-head h2 {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.hint {
  margin: 4px 0 0;
  color: var(--text-muted);
  font-size: 13px;
}

/* ---------- Forms ---------- */
.grid-2 {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 14px;
  margin-bottom: 14px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 10px;
}

.field span {
  color: var(--text-muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 500;
}

input[type="text"],
input[type="number"],
select,
textarea {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 11px 14px;
  color: var(--text);
  outline: none;
  transition: border-color 0.15s ease;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(124, 92, 255, 0.15);
}

textarea {
  resize: vertical;
  font-family: inherit;
}

/* ---------- Criteria rows ---------- */
.rows {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.criterion-row {
  display: grid;
  grid-template-columns: 1fr 220px 80px 36px;
  gap: 10px;
  align-items: center;
  padding: 10px 12px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.criterion-row input[type="text"] {
  background: transparent;
  border: 1px solid transparent;
  padding: 8px 10px;
}

.criterion-row input[type="text"]:hover {
  border-color: var(--border);
}

.weight-slider {
  display: flex;
  align-items: center;
  gap: 8px;
}

.weight-slider input[type="range"] {
  flex: 1;
  accent-color: var(--accent);
}

.weight-percent {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 10px;
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  text-align: center;
  font-weight: 600;
  color: var(--accent-2);
}

/* ---------- Matrix table ---------- */
.matrix-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 10px;
}

.matrix {
  border-collapse: separate;
  border-spacing: 0;
  width: 100%;
  min-width: 720px;
}

.matrix th,
.matrix td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.matrix thead th {
  background: var(--panel-2);
  font-weight: 600;
  font-size: 13px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  position: sticky;
  top: 0;
}

.matrix th .crit-weight {
  font-size: 11px;
  color: var(--accent-2);
  font-weight: 500;
  display: block;
  margin-top: 2px;
  text-transform: none;
  letter-spacing: 0;
}

.matrix tbody tr:last-child td {
  border-bottom: none;
}

.option-name input {
  background: transparent;
  border: 1px solid transparent;
  padding: 6px 8px;
  width: 100%;
  font-weight: 500;
}

.option-name input:hover {
  border-color: var(--border);
}

.score-cell {
  width: 90px;
  min-width: 90px;
}

.score-input {
  width: 100%;
  text-align: center;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

.total-cell {
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  color: var(--accent-2);
}

/* ---------- Results ---------- */
.results-grid {
  display: grid;
  gap: 12px;
}

.result-row {
  display: grid;
  grid-template-columns: 32px 1fr auto;
  gap: 14px;
  align-items: center;
  padding: 14px 16px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
  position: relative;
  overflow: hidden;
}

.result-row.winner {
  border-color: var(--accent);
  background: linear-gradient(135deg, rgba(124, 92, 255, 0.1), rgba(78, 161, 255, 0.05));
}

.result-rank {
  font-size: 18px;
  font-weight: 800;
  color: var(--text-muted);
}

.result-row.winner .result-rank {
  color: var(--accent);
}

.result-name {
  font-weight: 600;
  font-size: 15px;
}

.result-bar {
  margin-top: 6px;
  height: 6px;
  background: var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.result-bar-fill {
  height: 100%;
  background: var(--accent-grad);
  transition: width 0.3s ease;
}

.result-score {
  font-size: 22px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--accent-2);
  min-width: 70px;
  text-align: right;
}

/* ---------- Analysis output ---------- */
.analysis {
  margin-top: 8px;
  padding: 0;
  display: none;
}

.analysis.visible {
  display: block;
  padding: 18px 20px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
  animation: fadeIn 0.4s ease;
}

.analysis h3 {
  margin: 18px 0 8px;
  font-size: 15px;
  color: var(--accent-2);
  letter-spacing: -0.01em;
}

.analysis h3:first-child {
  margin-top: 0;
}

.analysis p,
.analysis li {
  color: #cbd0de;
  line-height: 1.65;
}

.analysis ul,
.analysis ol {
  padding-left: 22px;
  margin: 8px 0;
}

.analysis strong {
  color: var(--text);
}

.analysis .recommendation {
  margin-top: 16px;
  padding: 14px 16px;
  background: linear-gradient(135deg, rgba(61, 220, 151, 0.08), rgba(78, 161, 255, 0.05));
  border: 1px solid rgba(61, 220, 151, 0.3);
  border-radius: 10px;
}

.analysis .recommendation h3 {
  color: var(--good);
  margin-top: 0;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- Spinner ---------- */
.spinner {
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ---------- Footer ---------- */
.footer {
  text-align: center;
  padding: 22px;
  color: var(--text-faint);
  font-size: 13px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.footer .dot {
  color: var(--text-faint);
}

/* ---------- Empty state ---------- */
.empty-state {
  text-align: center;
  padding: 32px;
  color: var(--text-muted);
  font-size: 14px;
}

/* ---------- Mobile ---------- */
@media (max-width: 720px) {
  .topbar {
    padding: 16px;
    flex-direction: column;
    gap: 14px;
    align-items: flex-start;
  }
  .container {
    padding: 18px;
  }
  .grid-2 {
    grid-template-columns: 1fr;
  }
  .criterion-row {
    grid-template-columns: 1fr 36px;
    gap: 8px;
  }
  .criterion-row .weight-slider,
  .criterion-row .weight-percent {
    grid-column: 1 / -1;
  }
  .card-head {
    flex-direction: column;
    align-items: stretch;
  }
}