:root {
  --bg: #0b0d11;
  --surface: #14171d;
  --surface-2: #1b1f27;
  --surface-hover: #232833;
  --border: #2b313d;
  --border-soft: #21262f;
  --text: #e9ebf0;
  --text-muted: #97a0af;
  --text-faint: #626a78;
  --accent: #5b8cff;
  --accent-soft: rgba(91, 140, 255, 0.16);
  --success: #3ecf8e;
  --success-soft: rgba(62, 207, 142, 0.12);
  --warning: #e8a23d;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html {
  scrollbar-gutter: stable;
}

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  /* Keep this a flat color: the sticky header/controls paint var(--bg) over
     content as it scrolls under them, and any gradient here shows up as
     visible seams at their edges. */
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 8px;
}
::-webkit-scrollbar-thumb:hover {
  background: #3a4150;
}

.app {
  max-width: 1700px;
  margin: 0 auto;
  padding: 16px 32px 64px;
}

/* ---------- Header ---------- */

header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: linear-gradient(var(--bg) 82%, transparent);
  padding: 8px 0 10px;
  margin-bottom: 6px;
}

.header-row {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

header h1 {
  font-size: 1.3rem;
  font-weight: 700;
  margin: 0;
  letter-spacing: -0.01em;
  background: linear-gradient(90deg, var(--text), #9fb4dc);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- Tabs / segmented controls ---------- */

.tabs {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  padding: 4px;
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  width: fit-content;
}

button {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 7px 16px;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 500;
  font-family: inherit;
  transition: background 0.15s ease, color 0.15s ease, transform 0.1s ease;
  white-space: nowrap;
}
.tabs button:hover:not(.active):not(:disabled) {
  background: var(--surface-hover);
  color: var(--text);
}
button.active {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 2px 10px rgba(91, 140, 255, 0.35);
}
button:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}
/* Press feedback only on small pill buttons -- scaling a full-width bar
   (like the tree-group headers) moves its edge out from under the cursor
   mid-click, which swallows the click event near the edges. */
.tabs button:active:not(:disabled),
.character-tabs button:active:not(:disabled),
.download-btn:active:not(:disabled) {
  transform: scale(0.97);
}

/* ---------- Toolbar / file picker ---------- */

.toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-soft);
  margin-bottom: 16px;
}

.file-picker {
  background: linear-gradient(135deg, #2f7d5a, #256a4b);
  color: #eafff3;
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
  transition: filter 0.15s ease;
}
.file-picker:hover {
  filter: brightness(1.12);
}
.file-picker input[type="file"] {
  display: none;
}

.download-btn {
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 16px;
}
.download-btn:hover:not(:disabled) {
  background: var(--surface-hover);
  border-color: #3a4150;
}

.status {
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-left: auto;
}

/* ---------- Empty state ---------- */

.empty-state {
  max-width: 560px;
  margin: 8vh auto 0;
  text-align: center;
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 40px 40px 32px;
  box-shadow: var(--shadow-md);
}
.empty-state-icon {
  font-size: 2.4rem;
  margin-bottom: 8px;
}
.empty-state h2 {
  margin: 0 0 6px;
  font-size: 1.05rem;
  font-weight: 650;
}
.empty-state p {
  color: var(--text-muted);
  margin: 6px 0;
  font-size: 0.88rem;
}
.empty-state code {
  display: inline-block;
  margin-top: 4px;
  background: var(--bg);
  border: 1px solid var(--border-soft);
  border-radius: 6px;
  padding: 3px 8px;
  font-size: 0.78rem;
  color: #b9c3d6;
  word-break: break-all;
}
.empty-state-note {
  font-size: 0.78rem !important;
  color: var(--text-faint) !important;
  margin-top: 14px !important;
}

/* ---------- Character selector tabs ---------- */

.character-tabs {
  display: flex;
  gap: 8px;
  margin: 0 0 16px;
  flex-wrap: wrap;
}
.character-tabs button {
  background: var(--surface);
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
}
.character-tabs button.active {
  background: var(--accent-soft);
  color: var(--text);
  border-color: var(--accent);
  box-shadow: none;
}

/* ---------- Layout ---------- */

main {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}
/* Profile editor: no talent browser, just the fields panel */
main.single-column {
  grid-template-columns: minmax(0, 1fr);
  max-width: 720px;
}
@media (max-width: 1000px) {
  main {
    grid-template-columns: 1fr;
  }
}

.side-panel {
  position: sticky;
  top: 64px;
  max-height: calc(100vh - 80px);
  overflow-y: auto;
  padding-right: 2px;
}
@media (max-width: 1000px) {
  .side-panel {
    position: static;
    max-height: none;
  }
}

.hint {
  color: var(--text-faint);
  font-size: 0.78rem;
  margin: 0 0 14px;
}

fieldset {
  border: 1px solid var(--border-soft);
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 14px 16px;
  margin: 0 0 16px;
}
legend {
  padding: 0 8px;
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.field-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.field-grid label {
  display: flex;
  flex-direction: column;
  gap: 5px;
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
}
.field-grid input[type="text"],
.field-grid input[type="number"] {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 7px 10px;
  font-size: 0.88rem;
  font-family: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.field-grid input:focus,
input.search:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.field-grid input[readonly] {
  opacity: 0.6;
}

.checkbox-field {
  flex-direction: row !important;
  align-items: flex-start;
  gap: 8px !important;
  line-height: 1.35;
}

/* Custom checkbox look */
input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 19px;
  height: 19px;
  min-width: 19px;
  border-radius: 5px;
  border: 1.5px solid var(--border);
  background: var(--bg);
  cursor: pointer;
  position: relative;
  flex: none;
  margin-top: 1px;
  transition: background 0.12s ease, border-color 0.12s ease;
}
input[type="checkbox"]:hover {
  border-color: #4a5266;
}
input[type="checkbox"]:checked {
  background: var(--success);
  border-color: var(--success);
}
input[type="checkbox"]:checked::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 10px;
  border: solid #06110c;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

/* ---------- Level estimate ---------- */

.level-estimate {
  background: var(--surface-2);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  padding: 8px 12px;
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.level-line {
  color: var(--text-muted);
  font-size: 0.78rem;
  font-variant-numeric: tabular-nums;
}
.level-line strong {
  color: var(--text);
}
.level-line.points-over {
  color: var(--warning);
  font-weight: 600;
}

/* ---------- Currency fields ---------- */

.currency-field {
  display: flex !important;
  flex-direction: row !important;
  align-items: center;
  gap: 10px !important;
  background: var(--surface-2);
  border: 1px solid var(--border-soft);
  border-left: 3px solid var(--cur, var(--border-soft));
  border-radius: var(--radius-md);
  padding: 8px 12px;
}
.currency-name {
  flex: 1;
  color: var(--cur, var(--text));
  font-size: 0.82rem;
  font-weight: 500;
}

/* In-game currency colors, nudged toward Material 300/400 shades so they
   sit comfortably on the dark surface. */
.currency-Credits          { --cur: #ffb74d; }  /* Ren: amber */
.currency-Exotic1          { --cur: #f48fb1; }  /* Exotics: light pink */
.currency-Exotic_Red       { --cur: #ef5350; }  /* Red Exotics: red */
.currency-Biomass          { --cur: #81c784; }  /* Legendary Biomass: green */
.currency-Exotic_Uranium   { --cur: #d4e157; }  /* Uranium Rod: yellow-green */
.currency-Licence          { --cur: #64b5f6; }  /* Legendary Licence: blue */
.currency-Refund           { --cur: #b39ddb; }  /* Respec Point: soft violet */
.currency-Biomass_Converter{ --cur: #4dd0e1; }  /* Flux: cyan */
.currency-field input[type="number"] {
  width: 100px;
  text-align: right;
}

/* ---------- Icons ---------- */

.icon {
  width: 28px;
  height: 28px;
  flex: none;
  border-radius: 8px;
  object-fit: contain;
  background: #10131a;
  border: 1px solid var(--border-soft);
  padding: 4px;
}
.icon-placeholder {
  background: repeating-linear-gradient(
    135deg,
    var(--surface-2),
    var(--surface-2) 4px,
    var(--surface) 4px,
    var(--surface) 8px
  );
  border: 1px dashed var(--border);
}
.tree-icon {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  padding: 2px;
}

/* ---------- Talent browser ---------- */

.talent-browser {
  min-width: 0;
}

.browser-controls {
  position: sticky;
  top: 56px;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 8px 0 10px;
  background: linear-gradient(var(--bg) 88%, transparent);
  margin-bottom: 4px;
}

input.search {
  flex: 1;
  min-width: 220px;
  padding: 9px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 999px;
  font-size: 0.88rem;
  font-family: inherit;
}
input.search::placeholder {
  color: var(--text-faint);
}

.bulk-btn {
  background: var(--surface-2);
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 7px 14px;
  font-size: 0.78rem;
}
.bulk-btn:hover {
  background: var(--surface-hover);
  color: var(--text);
}

.tree-groups {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.tree-group {
  border: 1px solid var(--border-soft);
  background: var(--surface);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.tree-group.open {
  border-color: var(--border);
}

/* The header is a row: a full-width disclosure button plus this section's
   bulk actions, which cannot be nested inside that button. */
.tree-group-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-right: 12px;
  transition: background 0.12s ease;
}
/* Highlight the whole row, not just the disclosure button -- otherwise the
   background stops short of the bulk actions and the header looks cut off. */
.tree-group-header:hover {
  background: var(--surface-hover);
}
.tree-group-toggle {
  all: unset;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  flex: 1;
  min-width: 0;
  color: var(--text);
  font-size: 0.92rem;
  font-weight: 600;
  box-sizing: border-box;
}

.tree-group-actions {
  display: flex;
  gap: 6px;
  flex: none;
}
.tree-group-actions .bulk-btn {
  padding: 5px 11px;
  font-size: 0.72rem;
}
.disclosure {
  display: inline-block;
  width: 0.9em;
  color: var(--text-faint);
  font-size: 0.75rem;
}
.tree-group-title {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.tree-group-count {
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}
.progress-track {
  width: 90px;
  height: 6px;
  border-radius: 999px;
  background: var(--surface-2);
  overflow: hidden;
  flex: none;
  border: 1px solid var(--border-soft);
}
.progress-fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--success));
  border-radius: 999px;
  transition: width 0.2s ease;
}

/* ---------- Talent cards ---------- */

/* Fixed grid, not CSS columns: column layouts rebalance whenever a card's
   height changes (unlocking, confirm boxes), which makes cards visibly jump
   around. Cards stretch to equal height per row (stable positions); the
   requirements footer is pinned to the card bottom so the extra space
   reads as tile padding instead of dead space. */
.talent-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 10px;
  padding: 6px 14px 16px;
}
@media (max-width: 560px) {
  .talent-cards {
    grid-template-columns: 1fr;
  }
}

.talent-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  cursor: pointer;
  border: 1px solid var(--border-soft);
  border-left: 3px solid transparent;
  background: var(--surface-2);
  transition: background 0.12s ease, border-color 0.12s ease;
}
.talent-row:hover {
  background: var(--surface-hover);
}
.talent-row.unlocked {
  border-left-color: var(--success);
  background: var(--success-soft);
}
.talent-row.unlocked:hover {
  background: rgba(62, 207, 142, 0.18);
}
.talent-row .icon {
  width: 44px;
  height: 44px;
  margin-top: 1px;
}
/* Missing requirements: yellow edge + note, whether locked or unlocked
   (the user can choose to unlock something without its prerequisites). */
.talent-row.unmet {
  border-left-color: var(--warning);
}
.talent-row.unmet .talent-name::after {
  content: " ⚠ missing requirements";
  color: var(--warning);
  font-size: 0.72rem;
  font-weight: 500;
}
.talent-body {
  flex: 1;
  min-width: 0;
  align-self: stretch;
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.talent-name {
  font-weight: 600;
  line-height: 1.3;
}
.talent-desc {
  color: var(--text-muted);
  font-size: 0.8rem;
  line-height: 1.45;
  white-space: normal;
  overflow-wrap: anywhere;
}
.talent-req {
  color: var(--text-faint);
  font-size: 0.74rem;
  line-height: 1.4;
  white-space: normal;
  /* Pin requirements to the card's bottom edge; in a stretched card the
     free space then sits between description and footer, like padding. */
  margin-top: auto;
  padding-top: 4px;
}
.talent-effects {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 2px;
}
.effect-chip {
  background: var(--accent-soft);
  color: #a8c2ff;
  border-radius: 999px;
  padding: 2px 9px;
  font-size: 0.73rem;
  font-weight: 500;
  white-space: nowrap;
}
.talent-row.unlocked .effect-chip {
  background: var(--success-soft);
  color: #7fe0b4;
}

.rank-badge {
  flex: none;
  align-self: flex-start;
  margin-top: 2px;
  background: var(--success);
  color: #06110c;
  border-radius: 999px;
  padding: 3px 9px;
  font-size: 0.73rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.rank-badge.rank-zero {
  background: var(--surface);
  color: var(--text-faint);
  border: 1px solid var(--border);
}

/* The whole card is the control now */
.talent-row {
  user-select: none;
}

/* ---------- Inline confirmation ---------- */

.confirm-box {
  margin-top: 8px;
  background: var(--surface);
  border: 1px solid var(--warning);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  cursor: default;
}
.confirm-text {
  display: block;
  color: var(--text);
  font-size: 0.78rem;
  line-height: 1.4;
  margin-bottom: 8px;
}
.confirm-actions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.confirm-actions button {
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 4px 12px;
  font-size: 0.76rem;
}
.confirm-actions button:hover {
  background: var(--surface-hover);
}
.confirm-actions .confirm-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.confirm-actions .confirm-primary:hover {
  filter: brightness(1.1);
  background: var(--accent);
}

/* ---------- Backup warning banner ---------- */

.backup-banner {
  background: rgba(232, 162, 61, 0.09);
  border: 1px solid rgba(232, 162, 61, 0.35);
  color: #ecc189;
  border-radius: var(--radius-md);
  padding: 8px 14px;
  font-size: 0.8rem;
  margin-bottom: 14px;
}

.restore-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  margin-bottom: 14px;
}
.restore-text {
  color: var(--text-muted);
  font-size: 0.82rem;
}
.restore-actions {
  display: flex;
  gap: 6px;
  margin-left: auto;
}
.restore-actions button {
  border: 1px solid var(--border);
  background: var(--surface-2);
  font-size: 0.78rem;
  padding: 6px 13px;
}
.restore-actions button:hover {
  background: var(--surface-hover);
  color: var(--text);
}
.restore-actions .restore-primary {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--text);
}

.hint-warning {
  color: var(--warning);
  font-weight: 600;
}

/* ---------- Footer ---------- */

footer {
  margin-top: 40px;
  padding-top: 14px;
  border-top: 1px solid var(--border-soft);
  color: var(--text-faint);
  font-size: 0.75rem;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}
.footer-sep {
  color: var(--border);
}