:root {
  --bg: #050b14;
  --bg-2: #0b1224;
  --card: rgba(14, 22, 40, 0.78);
  --card-strong: rgba(16, 25, 46, 0.96);
  --stroke: rgba(255,255,255,0.10);
  --stroke-strong: rgba(124,92,255,0.28);
  --text: #f4f7ff;
  --muted: #98a6ca;
  --accent: #7c5cff;
  --accent-2: #21d7a8;
  --danger: #ff6d87;
  --warn: #ffcc66;
  --good: #7ef0c9;
  --shadow: 0 24px 70px rgba(0,0,0,0.42);
  --radius: 26px;
}

* { box-sizing: border-box; }
html, body { min-height: 100%; }

body {
  margin: 0;
  color: var(--text);
  background:
    -webkit-radial-gradient(circle at 18% 0%, rgba(124,92,255,0.18), transparent 28%),
    -webkit-radial-gradient(circle at 100% 12%, rgba(33,215,168,0.12), transparent 24%),
    -webkit-linear-gradient(180deg, var(--bg), var(--bg-2));
  background:
    -moz-radial-gradient(circle at 18% 0%, rgba(124,92,255,0.18), transparent 28%),
    -moz-radial-gradient(circle at 100% 12%, rgba(33,215,168,0.12), transparent 24%),
    -moz-linear-gradient(180deg, var(--bg), var(--bg-2));
  background:
    radial-gradient(circle at 18% 0%, rgba(124,92,255,0.18), transparent 28%),
    radial-gradient(circle at 100% 12%, rgba(33,215,168,0.12), transparent 24%),
    linear-gradient(180deg, var(--bg), var(--bg-2));
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  overflow-x: hidden;
}

.bg-orb {
  position: fixed;
  border-radius: 999px;
  filter: blur(56px);
  -webkit-filter: blur(56px);
  -moz-filter: blur(56px);
  opacity: 0.34;
  pointer-events: none;
  z-index: 0;
}
.orb-a { width: 360px; height: 360px; background: rgba(124,92,255,0.34); top: -120px; left: -90px; }
.orb-b { width: 300px; height: 300px; background: rgba(33,215,168,0.22); bottom: 10%; right: -80px; }

.grid-overlay {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(circle at center, black, transparent 78%);
  mask-image: radial-gradient(circle at center, black, transparent 78%);
  opacity: 0.35;
}

.app {
  position: relative;
  z-index: 1;
  width: min(1360px, calc(100% - 28px));
  margin: 18px auto 32px;
}

.glass {
  background: var(--card);
  border: 1px solid var(--stroke);
  box-shadow: var(--shadow);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  border-radius: var(--radius);
}

.topbar, .tabs, .card, .settings-panel, .review-modal {
  border-radius: var(--radius);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand-mark {
  width: 56px;
  height: 56px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  font-size: 1.3rem;
  font-weight: 900;
  background: -webkit-linear-gradient(135deg, var(--accent), var(--accent-2));
  background: -moz-linear-gradient(135deg, var(--accent), var(--accent-2));
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-box-shadow: 0 12px 30px rgba(124,92,255,0.35);
  -moz-box-shadow: 0 12px 30px rgba(124,92,255,0.35);
  box-shadow: 0 12px 30px rgba(124,92,255,0.35);
}

.topbar h1 {
  margin: 0;
  font-size: clamp(1.35rem, 2.4vw, 2rem);
  letter-spacing: -0.04em;
}

.topbar p, .card-head p, .section-hero p, .setting-box p, .control-note, .result-meta, .result-formula, .setting-note, .review-meta {
  color: var(--muted);
}

.topbar p { margin: 6px 0 0; }

.icon-btn, .tab-btn, .primary-btn, .secondary-btn, .ghost-btn, .mini-btn {
  border: none;
  outline: none;
  cursor: pointer;
  transition: transform 0.16s ease, background 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease;
  -webkit-transition: -webkit-transform 0.16s ease, background 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease;
  -moz-transition: transform 0.16s ease, background 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease;
}
.icon-btn:hover, .tab-btn:hover, .primary-btn:hover, .secondary-btn:hover, .ghost-btn:hover, .mini-btn:hover {
  transform: translateY(-1px);
  -webkit-transform: translateY(-1px);
}

.icon-btn {
  width: 48px;
  height: 48px;
  border-radius: 16px;
  background: rgba(255,255,255,0.06);
  color: var(--text);
  border: 1px solid var(--stroke);
  font-size: 1.1rem;
}

.tabs {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
  padding: 10px;
  margin-top: 16px;
}

.tab-btn {
  padding: 14px 14px;
  border-radius: 18px;
  background: rgba(255,255,255,0.03);
  color: var(--muted);
  font-size: 0.98rem;
  font-weight: 700;
}
.tab-btn.active {
  background: -webkit-linear-gradient(135deg, rgba(124,92,255,0.26), rgba(33,215,168,0.14));
  background: -moz-linear-gradient(135deg, rgba(124,92,255,0.26), rgba(33,215,168,0.14));
  background: linear-gradient(135deg, rgba(124,92,255,0.26), rgba(33,215,168,0.14));
  color: var(--text);
  -webkit-box-shadow: inset 0 0 0 1px var(--stroke-strong);
  -moz-box-shadow: inset 0 0 0 1px var(--stroke-strong);
  box-shadow: inset 0 0 0 1px var(--stroke-strong);
}

.tab-panel { display: none; margin-top: 18px; }
.tab-panel.active { display: block; }

.section-hero {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 16px;
}
.section-hero h2 {
  margin: 0;
  font-size: clamp(1.4rem, 2vw, 2rem);
  letter-spacing: -0.04em;
}

.pill {
  white-space: nowrap;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--stroke);
  color: var(--muted);
  font-size: 0.92rem;
}

.decision-grid, .slots-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 18px;
}

.card {
  padding: 22px;
}

.card-head h3 {
  margin: 0;
  font-size: 1.16rem;
  letter-spacing: -0.02em;
}
.card-head p {
  margin: 8px 0 0;
  line-height: 1.55;
}

.field-box {
  margin-top: 18px;
  display: grid;
  gap: 8px;
}
.text-input, .select-input {
  width: 100%;
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  color: var(--text);
  outline: none;
  font: inherit;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}
.text-input::placeholder, .select-input option { color: #a9b4d2; }
.textarea { resize: vertical; min-height: 88px; }
.select-input option { background: #101a31; color: #fff; }

.controls {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.control {
  padding: 15px;
  border-radius: 20px;
  background: rgba(255,255,255,0.035);
  border: 1px solid rgba(255,255,255,0.06);
}
.control-head, .setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.control-head { margin-bottom: 10px; }
.control-title, .setting-box label, .subhead, .panel-head h2 { font-weight: 800; }
.control-value { color: var(--muted); font-variant-numeric: tabular-nums; }
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px; /* Rounded with slightly less height */
  border-radius: 999px; /* Rounded progress track */
  background: rgba(255, 255, 255, 0.1);
  outline: none;
  margin: 0;
}
input[type="range"]:focus {
  outline: none;
}
/* Webkit browsers (Chrome, Safari, Opera, Edge) */
input[type="range"]::-webkit-slider-runnable-track {
  width: 100%;
  height: 4px;
  background: transparent;
  border: none;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent); /* Same color as progress */
  cursor: pointer;
  margin-top: -6px; /* Centers 16px thumb on 4px track */
  border: none;
}
/* Firefox */
input[type="range"]::-moz-range-track {
  width: 100%;
  height: 4px;
  background: transparent;
  border: none;
}
input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent); /* Same color as progress */
  cursor: pointer;
  border: none;
}
input[type="range"]::-moz-range-progress {
  background: transparent;
}
.control-note { margin-top: 8px; font-size: 0.9rem; line-height: 1.45; }
.control-boolean {
  margin-top: 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.hidden { display: none !important; }

.actions {
  margin-top: 18px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.actions.wrap { align-items: center; }

.primary-btn, .secondary-btn, .ghost-btn, .mini-btn {
  border-radius: 16px;
  padding: 13px 18px;
  font-weight: 800;
  color: var(--text);
}
.primary-btn {
  background: -webkit-linear-gradient(135deg, var(--accent), #5e8cff);
  background: -moz-linear-gradient(135deg, var(--accent), #5e8cff);
  background: linear-gradient(135deg, var(--accent), #5e8cff);
  -webkit-box-shadow: 0 16px 34px rgba(124,92,255,0.20);
  -moz-box-shadow: 0 16px 34px rgba(124,92,255,0.20);
  box-shadow: 0 16px 34px rgba(124,92,255,0.20);
}
.secondary-btn {
  background: -webkit-linear-gradient(135deg, var(--accent-2), #59f0c5);
  background: -moz-linear-gradient(135deg, var(--accent-2), #59f0c5);
  background: linear-gradient(135deg, var(--accent-2), #59f0c5);
  color: #07131d;
}
.ghost-btn, .mini-btn {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--stroke);
}

.result-card { min-height: 100%; }
.result-box {
  min-height: 250px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 14px;
}
.result-pill {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--stroke);
  font-weight: 800;
}
.result-number {
  font-size: clamp(3rem, 7vw, 4.8rem);
  line-height: 1;
  font-weight: 900;
  letter-spacing: -0.06em;
}
.result-meta, .result-formula {
  line-height: 1.6;
}
.result-formula {
  font-size: 0.92rem;
  color: #cfd6f2;
}
.preset-strip {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 16px;
}
.choice-result {
  margin-top: 16px;
  padding: 18px;
  border-radius: 20px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
  font-weight: 700;
  line-height: 1.5;
}

.split-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 14px;
}
.subhead {
  margin-bottom: 10px;
  color: #dbe2fb;
}

.advanced-dropdown {
  margin-top: 18px;
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 22px;
  background: rgba(255,255,255,0.03);
  overflow: hidden;
}
.advanced-dropdown > summary,
.feature-group > summary,
.mini-expand > summary {
  list-style: none;
  cursor: pointer;
  padding: 14px 16px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.advanced-dropdown > summary::-webkit-details-marker,
.feature-group > summary::-webkit-details-marker,
.mini-expand > summary::-webkit-details-marker { display: none; }
.advanced-dropdown > summary::after,
.feature-group > summary::after,
.mini-expand > summary::after {
  content: "▾";
  color: var(--muted);
}
.advanced-dropdown[open] > summary::after,
.feature-group[open] > summary::after,
.mini-expand[open] > summary::after {
  transform: rotate(180deg);
  -webkit-transform: rotate(180deg);
  -moz-transform: rotate(180deg);
}
.advanced-body {
  padding: 0 14px 14px;
  display: grid;
  gap: 12px;
}
.feature-group, .mini-expand {
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 18px;
  background: rgba(255,255,255,0.03);
  overflow: hidden;
}
.feature-body { padding: 0 14px 14px; }
.feature-head {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: 100%;
}
.feature-head input {
  transform: translateY(1px);
  -webkit-transform: translateY(1px);
  -moz-transform: translateY(1px);
}
.small-note { color: var(--muted); font-size: 0.92rem; line-height: 1.5; }
.inline-label { font-weight: 800; }

.range-list, .review-list, .history-list {
  display: grid;
  gap: 12px;
}
.range-item {
  display: grid;
  gap: 8px;
}
.range-item-head {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
}
.range-item small { color: var(--muted); }

.range-item .meta { color: var(--muted); font-size: 0.9rem; line-height: 1.45; }

.bias-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.bias-item {
  display: grid;
  gap: 8px;
  padding: 12px;
  border-radius: 16px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.05);
}
.bias-item label { font-weight: 800; }

.info-dot {
  display: inline-flex;
  width: 18px;
  height: 18px;
  border-radius: 999px;
  align-items: center;
  justify-content: center;
  font-size: 0.74rem;
  color: #dfe7ff;
  background: rgba(124,92,255,0.22);
  border: 1px solid rgba(124,92,255,0.36);
  cursor: help;
  position: relative;
  flex: 0 0 auto;
}
.info-dot::after {
  content: attr(data-tooltip);
  position: absolute;
  left: 50%;
  top: calc(100% + 10px);
  transform: translateX(-50%) translateY(-2px);
  -webkit-transform: translateX(-50%) translateY(-2px);
  -moz-transform: translateX(-50%) translateY(-2px);
  background: #101a31;
  color: #eff3ff;
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 14px 40px rgba(0,0,0,0.4);
  padding: 8px 10px;
  border-radius: 12px;
  font-size: 0.82rem;
  line-height: 1.35;
  width: max-content;
  max-width: 210px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease, transform 0.15s ease;
  -webkit-transition: opacity 0.15s ease, -webkit-transform 0.15s ease;
  -moz-transition: opacity 0.15s ease, transform 0.15s ease;
  z-index: 5;
}
.info-dot:hover::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  -webkit-transform: translateX(-50%) translateY(0);
  -moz-transform: translateX(-50%) translateY(0);
}

.review-card, .slot-group, .history-item, .review-empty, .empty-state {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 20px;
}
.review-card {
  padding: 16px;
  cursor: pointer;
  display: grid;
  gap: 10px;
}
.review-card-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: start;
}
.review-title {
  font-weight: 900;
  letter-spacing: -0.02em;
}
.review-meta {
  font-size: 0.92rem;
  line-height: 1.5;
}
.review-summary {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.review-badge {
  padding: 7px 10px;
  border-radius: 999px;
  font-size: 0.85rem;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
}

.slot-inputs {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}
.slot-input-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
}
.slot-groups {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}
.slot-group {
  padding: 16px;
}
.slot-group-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}
.slot-group-head h4 { margin: 0; font-size: 1.06rem; }
.slot-group-head p { margin: 5px 0 0; color: var(--muted); }
.slot-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}
.tag {
  padding: 8px 11px;
  border-radius: 999px;
  background: rgba(124,92,255,0.16);
  border: 1px solid rgba(124,92,255,0.22);
  color: #eef1ff;
  font-size: 0.9rem;
}
.slot-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}
.delete-btn {
  border-color: rgba(255,109,135,0.38);
  color: #ffdbe1;
}
.empty-card, .review-empty, .empty-state {
  text-align: center;
  padding: 72px 22px;
}

.settings-panel {
  position: fixed;
  top: 18px;
  right: 18px;
  width: min(440px, calc(100vw - 36px));
  max-height: calc(100vh - 36px);
  overflow: auto;
  z-index: 20;
  -webkit-transform: translateX(115%);
  -moz-transform: translateX(115%);
  transform: translateX(115%);
  -webkit-transition: -webkit-transform 0.22s ease;
  -moz-transition: transform 0.22s ease;
  transition: transform 0.22s ease;
  background: var(--card-strong);
  border: 1px solid var(--stroke);
  box-shadow: var(--shadow);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}
.settings-panel.open {
  -webkit-transform: translateX(0);
  -moz-transform: translateX(0);
  transform: translateX(0);
}

.review-modal {
  position: fixed;
  top: 50%;
  left: 50%;
  width: min(760px, calc(100vw - 28px));
  max-height: calc(100vh - 28px);
  overflow: auto;
  -webkit-transform: translate(-50%, -50%);
  -moz-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
  z-index: 30;
  background: var(--card-strong);
  border: 1px solid var(--stroke);
  box-shadow: var(--shadow);
}
.panel-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 14px;
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--stroke);
}
.panel-head h2 {
  margin: 0;
  letter-spacing: -0.03em;
}
.panel-head p {
  margin: 6px 0 0;
  color: var(--muted);
  line-height: 1.5;
}
.panel-body {
  padding: 18px 20px 20px;
  display: grid;
  gap: 12px;
}
.setting-box {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
  padding: 15px;
  border-radius: 18px;
}
.setting-box p {
  margin-top: 8px;
  line-height: 1.5;
  font-size: 0.92rem;
}

.switch {
  position: relative;
  width: 54px;
  height: 32px;
  display: inline-block;
}
.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}
.switch-slider {
  position: absolute;
  inset: 0;
  border-radius: 999px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.08);
  -webkit-transition: 0.18s ease;
  -moz-transition: 0.18s ease;
  transition: 0.18s ease;
}
.switch-slider::before {
  content: "";
  position: absolute;
  width: 24px;
  height: 24px;
  left: 3px;
  top: 3px;
  border-radius: 999px;
  background: white;
  -webkit-transition: 0.18s ease;
  -moz-transition: 0.18s ease;
  transition: 0.18s ease;
}
.switch input:checked + .switch-slider {
  background: -webkit-linear-gradient(135deg, var(--accent), var(--accent-2));
  background: -moz-linear-gradient(135deg, var(--accent), var(--accent-2));
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}
.switch input:checked + .switch-slider::before {
  -webkit-transform: translateX(22px);
  -moz-transform: translateX(22px);
  transform: translateX(22px);
}

.overlay, .modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.34);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease;
  -webkit-transition: opacity 0.18s ease;
  -moz-transition: opacity 0.18s ease;
  z-index: 15;
}
.overlay.show, .modal-overlay.show {
  opacity: 1;
  pointer-events: auto;
}

.warning {
  margin-top: 12px;
  padding: 14px;
  border-radius: 14px;
  background: rgba(255, 153, 0, 0.12);
  color: #ffcc70;
}

.mt-18 { margin-top: 18px; }

@media (max-width: 1100px) {
  .tabs { grid-template-columns: repeat(3, 1fr); }
  .decision-grid, .slots-grid, .split-grid { grid-template-columns: 1fr; }
  .section-hero { align-items: start; flex-direction: column; }
}
@media (max-width: 720px) {
  .app { width: min(100% - 16px, 1360px); margin: 10px auto 18px; }
  .topbar { padding: 18px; }
  .tabs { grid-template-columns: 1fr; }
  .panel-head, .panel-body, .card { padding-left: 16px; padding-right: 16px; }
  .slot-input-row { grid-template-columns: 1fr; }
  .bias-grid { grid-template-columns: 1fr; }
}