/* ============================================================
   BUILD A FUND v4 — bf- prefix
   FundBenchmark: dark-first, light mode via [data-theme="light"]
   Chart.js radar chart, risk score, drag-to-rebalance
   ============================================================ */

:root {
  --bf-obsidian: #0a0a0b;
  --bf-charcoal: #141416;
  --bf-graphite: #1c1c1f;
  --bf-slate: #2a2a2f;
  --bf-pewter: #4a4a52;
  --bf-silver: #8a8a94;
  --bf-platinum: #c4c4cc;
  --bf-ivory: #f4f4f6;
  --bf-white: #ffffff;
  --bf-gold: #c9a962;
  --bf-gold-light: #e4d4a4;
  --bf-gold-dark: #a68b3d;
  --bf-success: #4ade80;
  --bf-error: #f87171;
  --bf-blue: #60a5fa;
  --bf-purple: #a78bfa;
  --bf-pink: #f472b6;
  --bf-orange: #fb923c;
  --bf-cyan: #22d3ee;
  --bf-font-display: 'Cormorant Garamond', Georgia, serif;
  --bf-font-body: 'DM Sans', -apple-system, sans-serif;
}

/* ===== Light mode ===== */
[data-theme="light"] {
  --bf-obsidian: #ffffff; --bf-charcoal: #f5f4f0;
  --bf-graphite: rgba(255,253,247,0.5); --bf-slate: rgba(0,0,0,0.06);
  --bf-pewter: #9a9a9f; --bf-silver: #6a6a74;
  --bf-platinum: #4a4a52; --bf-ivory: #1a1a1f; --bf-white: #111;
}
[data-theme="light"] .bf-page { background: linear-gradient(180deg, #ede9de 0%, #f5f4f0 30%, #f0ede5 100%); }
[data-theme="light"] .bf-nav { background: rgba(255,255,255,0.85); }
[data-theme="light"] .bf-card,
[data-theme="light"] .bf-preview { background: rgba(255,253,247,0.5); backdrop-filter: blur(12px); border-color: rgba(201,169,98,0.08); }
[data-theme="light"] .bf-select-card { background: rgba(255,253,247,0.4); }
[data-theme="light"] .bf-select-card.selected { background: rgba(201,169,98,0.08); }
[data-theme="light"] .bf-search-results { background: #f9f8f4; border-color: rgba(0,0,0,0.08); }
[data-theme="light"] .bf-modal { background: #f9f8f4; border-color: rgba(0,0,0,0.08); }

/* ===== Base ===== */
.bf-page { font-family: var(--bf-font-body); background: var(--bf-obsidian); color: var(--bf-ivory); min-height: 100vh; }
.bf-page * { box-sizing: border-box; margin: 0; padding: 0; }

/* ===== Touch/Mouse Scrolling ===== */
.bf-scroll-touch {
  -webkit-overflow-scrolling: touch; overflow-y: auto; overscroll-behavior: contain;
  scrollbar-width: thin; scrollbar-color: var(--bf-slate) transparent;
}
.bf-scroll-touch::-webkit-scrollbar { width: 5px; }
.bf-scroll-touch::-webkit-scrollbar-track { background: transparent; }
.bf-scroll-touch::-webkit-scrollbar-thumb { background: var(--bf-slate); border-radius: 3px; }
.bf-scroll-touch::-webkit-scrollbar-thumb:hover { background: var(--bf-gold); }

/* ===== Nav ===== */
.bf-nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(10,10,11,0.95); backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--bf-slate); width: 100%;
}
.bf-nav-inner { max-width: 1920px; margin: 0 auto; padding: 14px 32px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.bf-back { display: flex; align-items: center; gap: 8px; padding: 8px 14px; background: var(--bf-graphite); border: 1px solid var(--bf-slate); border-radius: 8px; color: var(--bf-silver); text-decoration: none; font-size: 13px; cursor: pointer; }
.bf-back:hover { background: var(--bf-slate); color: var(--bf-ivory); }
.bf-back svg { width: 16px; height: 16px; stroke: currentColor; stroke-width: 2; fill: none; }
.bf-nav-title { font-family: var(--bf-font-display); font-size: 22px; color: var(--bf-white); }
.bf-nav-title span { color: var(--bf-gold); }
.bf-nav-actions { display: flex; gap: 10px; align-items: center; }

/* ===== Buttons ===== */
.bf-btn { display: inline-flex; align-items: center; gap: 6px; padding: 9px 16px; border-radius: 8px; font-size: 13px; font-weight: 600; cursor: pointer; border: none; text-decoration: none; transition: all 0.2s; font-family: var(--bf-font-body); }
.bf-btn svg { width: 16px; height: 16px; stroke: currentColor; stroke-width: 2; fill: none; }
.bf-btn-ghost { background: transparent; border: 1px solid var(--bf-slate); color: var(--bf-silver); }
.bf-btn-ghost:hover { border-color: var(--bf-gold); color: var(--bf-gold); }
.bf-btn-gold { background: var(--bf-gold); color: var(--bf-obsidian); }
.bf-btn-gold:hover { background: var(--bf-gold-light); transform: translateY(-1px); }
.bf-btn-gold:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }
.bf-btn-balance { background: rgba(201,169,98,0.1); border: 1px solid rgba(201,169,98,0.3); color: var(--bf-gold); padding: 6px 12px; font-size: 12px; }
.bf-btn-balance:hover { background: rgba(201,169,98,0.2); border-color: var(--bf-gold); transform: translateY(-1px); }
.bf-btn-balance svg { width: 14px; height: 14px; }
.bf-btn-balance.pulse { animation: bf-pulse 0.6s ease; }
@keyframes bf-pulse { 0% { transform: scale(1); } 50% { transform: scale(1.05); box-shadow: 0 0 16px rgba(201,169,98,0.4); } 100% { transform: scale(1); } }

/* ===== Layout ===== */
.bf-container { max-width: 1920px; margin: 0 auto; padding: 28px 32px 100px; display: grid; grid-template-columns: 1fr 520px; gap: 28px; align-items: start; }
@media (max-width: 1100px) { .bf-container { grid-template-columns: 1fr; } }

/* ===== Cards ===== */
.bf-card { background: var(--bf-graphite); border: 1px solid var(--bf-slate); border-radius: 16px; overflow: hidden; margin-bottom: 24px; }
.bf-card-header { padding: 18px 24px; border-bottom: 1px solid var(--bf-slate); display: flex; align-items: center; justify-content: space-between; }
.bf-card-title { font-family: var(--bf-font-display); font-size: 20px; color: var(--bf-white); }
.bf-card-body { padding: 20px 24px; }

/* ===== Steps ===== */
.bf-steps { display: flex; gap: 8px; }
.bf-step-dot { width: 32px; height: 4px; border-radius: 2px; background: var(--bf-slate); transition: all 0.3s; cursor: pointer; }
.bf-step-dot.active { background: var(--bf-gold); }
.bf-step-dot.done { background: var(--bf-gold); opacity: 0.4; }
.bf-step { display: none; animation: bf-fadeIn 0.3s ease; }
.bf-step.active { display: block; }
@keyframes bf-fadeIn { from { opacity:0; transform:translateY(10px); } to { opacity:1; transform:translateY(0); } }

/* ===== Form ===== */
.bf-label { font-size: 12px; font-weight: 600; color: var(--bf-silver); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 8px; display: block; }
.bf-input { width: 100%; padding: 12px 16px; background: var(--bf-charcoal); border: 1px solid var(--bf-slate); border-radius: 8px; color: var(--bf-ivory); font-size: 14px; font-family: var(--bf-font-body); }
.bf-input:focus { outline: none; border-color: var(--bf-gold); }
.bf-input::placeholder { color: var(--bf-pewter); }

/* ===== Select cards ===== */
.bf-select-grid { display: grid; gap: 10px; margin-bottom: 20px; }
.bf-select-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.bf-select-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.bf-select-card { padding: 14px 16px; background: var(--bf-charcoal); border: 1px solid var(--bf-slate); border-radius: 10px; cursor: pointer; transition: all 0.2s; text-align: center; }
.bf-select-card:hover { border-color: var(--bf-pewter); transform: translateY(-1px); }
.bf-select-card.selected { border-color: var(--bf-gold); background: rgba(201,169,98,0.06); }
.bf-select-card input { display: none; }
.bf-sc-title { font-size: 13px; font-weight: 600; color: var(--bf-ivory); }
.bf-sc-desc { font-size: 11px; color: var(--bf-silver); margin-top: 2px; }

/* ===== Holdings ===== */
.bf-holdings-scroll { max-height: 420px; overflow-y: auto; }
.bf-holding { display: flex; align-items: center; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--bf-slate); animation: bf-slideIn 0.25s ease; }
@keyframes bf-slideIn { from { opacity:0; transform:translateX(-10px); } to { opacity:1; transform:translateX(0); } }
.bf-holding:last-child { border-bottom: none; }
.bf-holding-color { width: 8px; height: 32px; border-radius: 4px; flex-shrink: 0; }
.bf-holding-info { flex: 1; min-width: 0; }
.bf-holding-name { font-size: 14px; font-weight: 600; color: var(--bf-ivory); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; cursor: pointer; transition: color 0.2s; }
.bf-holding-name:hover { color: var(--bf-gold); }
.bf-holding-meta { font-size: 11px; color: var(--bf-silver); display: flex; gap: 6px; }
.bf-holding-meta .bf-meta-ticker { color: var(--bf-gold); font-weight: 700; cursor: pointer; }
.bf-holding-meta .bf-meta-ticker:hover { text-decoration: underline; }
.bf-holding-wt { display: flex; align-items: center; gap: 6px; }
.bf-holding-wt input {
  width: 60px; padding: 6px 8px; background: var(--bf-charcoal); border: 1px solid var(--bf-slate);
  border-radius: 6px; color: var(--bf-gold); font-size: 14px; font-weight: 700;
  text-align: right; font-family: var(--bf-font-body); -moz-appearance: number-input;
}
.bf-holding-wt input::-webkit-inner-spin-button,
.bf-holding-wt input::-webkit-outer-spin-button { -webkit-appearance: inner-spin-button; opacity: 0; width: 14px; cursor: pointer; }
.bf-holding-wt input:hover::-webkit-inner-spin-button,
.bf-holding-wt input:hover::-webkit-outer-spin-button { opacity: 1; }
.bf-holding-wt input:focus { outline: none; border-color: var(--bf-gold); }
.bf-holding-rm { width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; background: var(--bf-slate); border: none; border-radius: 5px; color: var(--bf-silver); cursor: pointer; font-size: 13px; transition: all 0.15s; }
.bf-holding-rm:hover { background: var(--bf-error); color: white; transform: scale(1.1); }

/* ===== Weight total ===== */
.bf-total-bar { display: flex; align-items: center; justify-content: space-between; padding: 14px 0; border-top: 1px solid var(--bf-slate); margin-top: 8px; }
.bf-total-label { font-size: 12px; font-weight: 600; color: var(--bf-silver); text-transform: uppercase; }
.bf-total-val { font-size: 18px; font-weight: 700; transition: color 0.3s; }
.bf-total-val.ok { color: var(--bf-success); }
.bf-total-val.over { color: var(--bf-error); }
.bf-total-val.under { color: var(--bf-gold); }
.bf-progress { height: 4px; background: var(--bf-slate); border-radius: 2px; margin-top: 8px; overflow: hidden; }
.bf-progress-fill { height: 100%; border-radius: 2px; transition: width 0.3s, background 0.3s; background: var(--bf-gold); }
.bf-progress-fill.ok { background: var(--bf-success); }
.bf-progress-fill.over { background: var(--bf-error); }

/* ===== Search ===== */
.bf-search-wrap { position: relative; margin-bottom: 16px; }
.bf-search-wrap svg { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); width: 16px; height: 16px; stroke: var(--bf-pewter); stroke-width: 2; fill: none; pointer-events: none; }
.bf-search { width: 100%; padding: 10px 12px 10px 36px; background: var(--bf-charcoal); border: 1px solid var(--bf-slate); border-radius: 8px; color: var(--bf-ivory); font-size: 13px; font-family: var(--bf-font-body); }
.bf-search:focus { outline: none; border-color: var(--bf-gold); }
.bf-search::placeholder { color: var(--bf-pewter); }
.bf-search-results { position: absolute; top: 100%; left: 0; right: 0; background: var(--bf-graphite); border: 1px solid var(--bf-slate); border-radius: 0 0 8px 8px; max-height: 300px; overflow-y: auto; z-index: 50; display: none; }
.bf-search-results.open { display: block; }
.bf-sr-item { display: flex; align-items: center; gap: 10px; padding: 10px 14px; cursor: pointer; border-bottom: 1px solid var(--bf-slate); transition: background 0.15s; }
.bf-sr-item:hover { background: var(--bf-slate); }
.bf-sr-item:last-child { border-bottom: none; }
.bf-sr-name { font-size: 13px; font-weight: 600; color: var(--bf-ivory); flex: 1; }
.bf-sr-ticker { font-size: 12px; font-weight: 700; color: var(--bf-gold); min-width: 60px; }
.bf-sr-meta { font-size: 11px; color: var(--bf-silver); }
.bf-sr-add { font-size: 18px; color: var(--bf-gold); }

/* ===== Suggestions ===== */
.bf-suggestions { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; max-height: 140px; overflow-y: auto; }
.bf-sug { display: flex; align-items: center; gap: 6px; padding: 8px 12px; background: var(--bf-charcoal); border: 1px solid var(--bf-slate); border-radius: 8px; cursor: pointer; transition: all 0.2s; font-size: 12px; color: var(--bf-ivory); }
.bf-sug:hover { border-color: var(--bf-gold); color: var(--bf-gold); transform: translateY(-1px); }
.bf-sug-ticker { font-weight: 700; color: var(--bf-gold); }
.bf-sug-add { font-size: 16px; color: var(--bf-gold); }

/* ===== Filters ===== */
.bf-filters { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.bf-filter { padding: 5px 12px; border-radius: 100px; font-size: 11px; font-weight: 600; background: var(--bf-slate); color: var(--bf-silver); border: none; cursor: pointer; font-family: var(--bf-font-body); transition: all 0.15s; }
.bf-filter.active { background: var(--bf-gold); color: var(--bf-obsidian); }
.bf-filter:hover:not(.active) { background: var(--bf-pewter); color: var(--bf-ivory); }

/* ===== Sidebar preview ===== */
.bf-sidebar { position: sticky; top: 80px; height: fit-content; }
.bf-preview { background: var(--bf-graphite); border: 1px solid var(--bf-slate); border-radius: 16px; padding: 24px; }
.bf-preview-header { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 12px; }
.bf-preview-title { font-family: var(--bf-font-display); font-size: 20px; color: var(--bf-white); }
.bf-preview-name { font-size: 15px; font-weight: 600; color: var(--bf-gold); margin-top: 2px; }
.bf-preview-badges { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 16px; }
.bf-badge { padding: 3px 10px; background: var(--bf-slate); border-radius: 6px; font-size: 10px; font-weight: 600; color: var(--bf-platinum); }
.bf-badge.gold { background: rgba(201,169,98,0.15); color: var(--bf-gold); }

/* ===== Risk Score Badge ===== */
.bf-risk-score { background: var(--bf-charcoal); border: 1px solid var(--bf-slate); border-radius: 12px; padding: 8px 16px; text-align: center; min-width: 80px; }
.bf-risk-label { font-size: 9px; font-weight: 600; color: var(--bf-silver); text-transform: uppercase; letter-spacing: 0.05em; }
.bf-risk-val { font-size: 24px; font-weight: 800; color: var(--bf-gold); line-height: 1.2; transition: color 0.3s; }
.bf-risk-val.low { color: var(--bf-success); }
.bf-risk-val.mid { color: var(--bf-gold); }
.bf-risk-val.high { color: var(--bf-orange); }
.bf-risk-val.extreme { color: var(--bf-error); }

/* ===== Radar Chart (Chart.js canvas) ===== */
.bf-radar-wrap {
  margin-bottom: 20px; padding: 12px 0;
  border-top: 1px solid var(--bf-slate); border-bottom: 1px solid var(--bf-slate);
  position: relative;
}
.bf-radar-wrap canvas { width: 100% !important; height: 320px !important; }
.bf-radar-hint {
  text-align: center; font-size: 10px; color: var(--bf-pewter); margin-top: 6px;
  font-style: italic;
}

/* ===== Preview stats ===== */
.bf-preview-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-bottom: 16px; }
.bf-prev-stat { text-align: center; padding: 12px; background: var(--bf-charcoal); border-radius: 10px; }
.bf-prev-stat-val { font-size: 20px; font-weight: 700; color: var(--bf-ivory); }
.bf-prev-stat-val.positive { color: var(--bf-success); }
.bf-prev-stat-label { font-size: 10px; font-weight: 600; color: var(--bf-silver); text-transform: uppercase; margin-top: 2px; }

/* Allocation bar */
.bf-alloc-bar { display: flex; height: 10px; border-radius: 5px; overflow: hidden; background: var(--bf-slate); margin-bottom: 10px; }
.bf-alloc-seg { height: 100%; transition: width 0.3s; }
.bf-alloc-legend { display: flex; flex-wrap: wrap; gap: 8px; max-height: 60px; overflow-y: auto; }
.bf-alloc-legend-item { display: flex; align-items: center; gap: 4px; font-size: 11px; color: var(--bf-silver); }
.bf-alloc-dot { width: 8px; height: 8px; border-radius: 2px; }

/* Economic context */
.bf-econ { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--bf-slate); }
.bf-econ-item { text-align: center; }
.bf-econ-val { font-size: 14px; font-weight: 700; color: var(--bf-ivory); }
.bf-econ-label { font-size: 10px; color: var(--bf-silver); }

/* ===== Review ===== */
.bf-review-group { margin-bottom: 20px; }
.bf-review-group-title { font-size: 11px; font-weight: 600; color: var(--bf-silver); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 10px; }
.bf-review-row { display: flex; justify-content: space-between; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--bf-slate); font-size: 13px; }
.bf-review-row:last-child { border-bottom: none; }
.bf-review-label { color: var(--bf-silver); }
.bf-review-value { color: var(--bf-ivory); font-weight: 600; }

/* ===== Modal ===== */
.bf-modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.7); backdrop-filter: blur(4px); z-index: 200; display: flex; align-items: center; justify-content: center; padding: 20px; }
.bf-modal { background: var(--bf-graphite); border: 1px solid var(--bf-slate); border-radius: 20px; max-width: 520px; width: 100%; max-height: 80vh; overflow-y: auto; position: relative; animation: bf-modalIn 0.25s ease; }
@keyframes bf-modalIn { from { opacity:0; transform: scale(0.95) translateY(10px); } to { opacity:1; transform: scale(1) translateY(0); } }
.bf-modal-close { position: absolute; top: 16px; right: 16px; width: 32px; height: 32px; display: flex; align-items: center; justify-content: center; background: var(--bf-slate); border: none; border-radius: 8px; color: var(--bf-silver); font-size: 20px; cursor: pointer; z-index: 1; }
.bf-modal-close:hover { background: var(--bf-error); color: white; }
.bf-modal-body { padding: 28px; }
.bf-modal-loading { text-align: center; padding: 40px; color: var(--bf-silver); font-size: 14px; }
.bf-md-header { margin-bottom: 20px; }
.bf-md-ticker { font-size: 13px; font-weight: 700; color: var(--bf-gold); display: inline-block; padding: 2px 8px; background: rgba(201,169,98,0.12); border-radius: 4px; margin-bottom: 6px; }
.bf-md-name { font-family: var(--bf-font-display); font-size: 24px; color: var(--bf-white); line-height: 1.2; }
.bf-md-desc { font-size: 13px; color: var(--bf-silver); line-height: 1.5; margin-top: 8px; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.bf-md-price-row { display: flex; align-items: baseline; gap: 12px; margin-bottom: 20px; }
.bf-md-price { font-size: 32px; font-weight: 700; color: var(--bf-white); }
.bf-md-change { font-size: 16px; font-weight: 600; }
.bf-md-change.up { color: var(--bf-success); }
.bf-md-change.down { color: var(--bf-error); }
.bf-md-spark { width: 100%; height: 60px; margin-bottom: 20px; }
.bf-md-spark svg { width: 100%; height: 100%; }
.bf-md-spark polyline { fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.bf-md-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 20px; }
.bf-md-stat { text-align: center; padding: 12px 8px; background: var(--bf-charcoal); border-radius: 10px; }
.bf-md-stat-val { font-size: 15px; font-weight: 700; color: var(--bf-ivory); }
.bf-md-stat-label { font-size: 10px; color: var(--bf-silver); text-transform: uppercase; margin-top: 2px; }
.bf-md-add { width: 100%; padding: 12px; background: var(--bf-gold); color: var(--bf-obsidian); border: none; border-radius: 10px; font-size: 14px; font-weight: 700; cursor: pointer; font-family: var(--bf-font-body); transition: all 0.2s; }
.bf-md-add:hover { background: var(--bf-gold-light); transform: translateY(-1px); }
.bf-md-add:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }

/* ===== Toast ===== */
.bf-toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(80px); background: var(--bf-charcoal); border: 1px solid var(--bf-gold); border-radius: 12px; padding: 12px 20px; font-size: 14px; font-weight: 600; color: var(--bf-gold); box-shadow: 0 8px 32px rgba(0,0,0,0.4); opacity: 0; transition: all 0.3s ease; z-index: 300; pointer-events: none; }
.bf-toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }
.bf-toast.error { border-color: var(--bf-error); color: var(--bf-error); }
.bf-toast.success { border-color: var(--bf-success); color: var(--bf-success); }

/* ===== Responsive ===== */
@media (max-width: 1100px) { .bf-container { padding: 16px; } .bf-sidebar { position: static; } }
@media (max-width: 900px) { .bf-nav-inner { padding: 12px 16px; flex-wrap: wrap; } .bf-select-grid.cols-3 { grid-template-columns: repeat(2, 1fr); } .bf-md-stats { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .bf-select-grid.cols-2 { grid-template-columns: 1fr; } .bf-select-grid.cols-3 { grid-template-columns: 1fr; } }