/* ============================================================
   AFH · Skill ROI Calculator
   Warm paper / ink / terracotta — matches afh-solutions.com
   ============================================================ */

:root {
  --ink: #1a1612;
  --ink-soft: #3a342d;
  --ink-mute: #6b6359;
  --ink-faint: #9a9082;
  --paper: #f5f1ea;
  --paper-2: #ebe5d9;
  --paper-3: #e1d9ca;
  --panel: #fdfbf6;
  --line: #d6cfc0;
  --line-soft: #e4ddd0;
  --accent: oklch(0.55 0.12 40);
  --accent-deep: oklch(0.42 0.10 35);
  --accent-bright: oklch(0.66 0.13 48);
  --accent-soft: oklch(0.92 0.035 55);
  --accent-line: oklch(0.82 0.055 50);
  --pos: oklch(0.52 0.10 150);
  --neg: oklch(0.52 0.15 28);
  --serif: "Instrument Serif", "Times New Roman", serif;
  --sans: "Inter", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --gutter: clamp(20px, 4vw, 72px);
  --measure: 1440px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  letter-spacing: -0.005em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, h4 { font-weight: 400; letter-spacing: -0.02em; }
em { font-family: var(--serif); font-style: italic; }
button { font-family: inherit; cursor: pointer; }
ul { list-style: none; }
.wrap { max-width: var(--measure); margin: 0 auto; padding: 0 var(--gutter); }
.eyebrow {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--accent); font-weight: 500;
}
.tabnum { font-variant-numeric: tabular-nums; }

/* ============ HEADER ============ */
header.site {
  position: sticky; top: 0; z-index: 40;
  background: rgba(245, 241, 234, 0.9);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
header.site .bar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 0; gap: 32px;
}
.logo { display: inline-flex; align-items: center; color: var(--ink); line-height: 0; }
.logo img { display: block; width: 134px; height: auto; }
header.site .tool-tag {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-mute);
  display: flex; align-items: center; gap: 10px;
}
header.site .tool-tag .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }

/* ============ TITLE ============ */
.title-block { padding: 64px 0 40px; }
.title-block h1 {
  font-family: var(--serif); font-size: clamp(46px, 7vw, 104px);
  line-height: 0.94; letter-spacing: -0.03em; margin-top: 20px;
}
.title-block h1 em { color: var(--accent); }
.title-block .lede {
  margin-top: 26px; font-size: clamp(18px, 1.7vw, 23px);
  color: var(--ink-soft); max-width: 720px; line-height: 1.45;
}

/* ============ KPI BAND ============ */
.kpi-band {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line); border-left: 1px solid var(--line);
  margin-bottom: 56px;
}
.kpi {
  border-right: 1px solid var(--line); border-bottom: 1px solid var(--line);
  background: var(--panel); padding: 26px 28px 28px;
  display: flex; flex-direction: column; gap: 6px; min-height: 178px;
}
.kpi .k { font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-mute); }
.kpi .v { font-family: var(--serif); font-size: clamp(40px, 4vw, 60px); line-height: 0.96; letter-spacing: -0.02em; margin-top: auto; }
.kpi .sub { font-size: 13.5px; color: var(--ink-mute); line-height: 1.4; }
.kpi.hero { background: var(--ink); color: var(--paper); border-right-color: var(--ink); }
.kpi.hero .k { color: var(--accent-bright); }
.kpi.hero .v { color: var(--paper); }
.kpi.hero .sub { color: var(--ink-faint); font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; }
.kpi .v.pos { color: var(--pos); }
.kpi .v.neg { color: var(--neg); }
.kpi.hero .v.pos { color: oklch(0.78 0.13 150); }
.kpi.hero .v.neg { color: oklch(0.72 0.16 40); }

/* ============ WORKING GRID ============ */
.layout { display: grid; grid-template-columns: 1.18fr 1fr; gap: 0; align-items: start; }
.layout > .config-col { border-right: 1px solid var(--line); padding-right: var(--gutter); }
.layout > .result-col { padding-left: var(--gutter); position: sticky; top: 78px; }

/* panel scaffold */
.panel { margin-bottom: 52px; }
.panel-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 16px; margin-bottom: 22px; flex-wrap: wrap;
}
.panel-head h2 { font-family: var(--serif); font-size: 31px; line-height: 1; letter-spacing: -0.02em; margin-top: 6px; }
.panel-head .ph-l { display: flex; flex-direction: column; gap: 4px; }

/* ============ PACKAGE SELECTOR ============ */
.packages { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; margin-bottom: 28px; }
.pkg {
  border: 1px solid var(--line); background: var(--panel); border-radius: 6px;
  padding: 16px 16px 18px; text-align: left; display: flex; flex-direction: column;
  gap: 8px; transition: border-color .15s, background .15s, box-shadow .15s; position: relative;
}
.pkg:hover { border-color: var(--accent-line); }
.pkg .pk-top { display: flex; align-items: center; gap: 8px; }
.pkg .radio { width: 15px; height: 15px; border-radius: 50%; border: 1.5px solid var(--line); flex: none; transition: border-color .15s; position: relative; }
.pkg .name { font-size: 14px; font-weight: 500; color: var(--ink); line-height: 1.15; }
.pkg .price { font-family: var(--serif); font-size: 30px; line-height: 1; letter-spacing: -0.02em; margin-top: 2px; }
.pkg .cadence { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-mute); }
.pkg[aria-pressed="true"] { border-color: var(--accent); background: var(--accent-soft); box-shadow: inset 0 0 0 1px var(--accent); }
.pkg[aria-pressed="true"] .radio { border-color: var(--accent); background: var(--accent); }
.pkg[aria-pressed="true"] .radio::after { content: ""; position: absolute; inset: 3px; border-radius: 50%; background: var(--paper); }

/* ============ INPUT FIELDS ============ */
.field-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 18px 22px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field.col-span-2 { grid-column: span 2; }
.field label { font-size: 13.5px; font-weight: 500; color: var(--ink); line-height: 1.2; }
.field .hint { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.02em; color: var(--ink-mute); line-height: 1.4; text-transform: uppercase; }
.input-shell {
  display: flex; align-items: center; border: 1px solid var(--line);
  background: var(--panel); border-radius: 5px; overflow: hidden;
  transition: border-color .15s, box-shadow .15s;
}
.input-shell:focus-within { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
.input-shell .pre { padding: 0 0 0 12px; font-family: var(--mono); font-size: 13px; color: var(--ink-mute); }
.input-shell input {
  width: 100%; border: 0; background: transparent; outline: none;
  font-family: var(--mono); font-size: 15px; color: var(--ink);
  padding: 11px 12px; font-variant-numeric: tabular-nums; min-width: 0;
}
.input-shell .suf { padding: 0 12px 0 0; font-family: var(--mono); font-size: 12px; color: var(--ink-mute); white-space: nowrap; }
.input-shell input::-webkit-outer-spin-button,
.input-shell input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.input-shell input[type=number] { -moz-appearance: textfield; }

/* note block */
.logic-note {
  margin-top: 26px; border-left: 3px solid var(--accent);
  background: var(--accent-soft); border-radius: 0 5px 5px 0;
  padding: 16px 20px;
}
.logic-note .lh { font-size: 14px; font-weight: 500; color: var(--accent-deep); margin-bottom: 5px; }
.logic-note p { font-size: 13.5px; color: var(--ink-soft); line-height: 1.5; }

/* ============ SKILL TOOLBAR ============ */
.skill-toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.btn {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 10px 15px; border: 1px solid var(--ink); color: var(--ink); background: transparent;
  border-radius: 5px; display: inline-flex; align-items: center; gap: 7px; transition: all .15s; white-space: nowrap;
}
.btn:hover { background: var(--ink); color: var(--paper); }
.btn.accent { background: var(--accent); border-color: var(--accent); color: var(--paper); }
.btn.accent:hover { background: var(--accent-deep); border-color: var(--accent-deep); }
.btn.ghost { border-color: var(--line); color: var(--ink-soft); padding: 9px 13px; }
.btn.ghost:hover { background: transparent; border-color: var(--ink); color: var(--ink); }
.btn.sm { padding: 8px 12px; font-size: 10px; }
.preset-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 22px; }
.preset-row .lbl { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-mute); margin-right: 4px; }

/* ============ SKILL LIST ============ */
.skill-list { display: flex; flex-direction: column; gap: 10px; }
.skill-card {
  border: 1px solid var(--line); background: var(--panel); border-radius: 6px;
  padding: 16px 18px; display: grid; grid-template-columns: 1fr auto; gap: 14px 20px;
  align-items: center; cursor: pointer; transition: border-color .15s, box-shadow .15s;
}
.skill-card:hover { border-color: var(--accent-line); box-shadow: 0 2px 14px -8px rgba(60,40,20,0.3); }
.skill-card .sc-main { display: flex; flex-direction: column; gap: 5px; min-width: 0; }
.skill-card .sc-name { font-family: var(--serif); font-size: 24px; line-height: 1.04; letter-spacing: -0.015em; }
.skill-card .sc-meta { display: flex; flex-wrap: wrap; gap: 6px; }
.tag {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--ink-mute); background: var(--paper-2); border: 1px solid var(--line-soft);
  padding: 3px 8px; border-radius: 999px;
}
.tag.area { color: var(--accent-deep); background: var(--accent-soft); border-color: var(--accent-line); }
.skill-card .sc-val { text-align: right; display: flex; flex-direction: column; gap: 2px; }
.skill-card .sc-val .num { font-family: var(--serif); font-size: 30px; line-height: 0.96; letter-spacing: -0.02em; color: var(--accent-deep); }
.skill-card .sc-val .cap { font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-mute); }
.skill-card .sc-val .build {
  margin-top: 6px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-soft);
  letter-spacing: 0.02em;
}

/* empty state */
.empty {
  border: 1px dashed var(--line); border-radius: 6px; background: transparent;
  padding: 44px 28px; text-align: center;
}
.empty h3 { font-family: var(--serif); font-size: 27px; color: var(--ink-soft); margin-bottom: 8px; }
.empty p { font-size: 14px; color: var(--ink-mute); max-width: 380px; margin: 0 auto 20px; line-height: 1.5; }

/* ============ BREAKDOWN ============ */
.breakdown { display: flex; flex-direction: column; }
.bd-row {
  display: grid; grid-template-columns: 18px 1fr auto; gap: 14px;
  align-items: baseline; padding: 15px 0; border-bottom: 1px solid var(--line-soft);
}
.bd-row:first-child { border-top: 1px solid var(--line); }
.bd-row .bar { width: 9px; height: 9px; border-radius: 2px; align-self: center; }
.bd-row .lab { font-size: 15px; color: var(--ink); }
.bd-row .lab small { display: block; font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.04em; text-transform: uppercase; color: var(--ink-mute); margin-top: 2px; }
.bd-row .amt { font-family: var(--serif); font-size: 26px; letter-spacing: -0.015em; color: var(--ink); }
.bd-row.invest .amt { color: var(--neg); }
.bd-meter { display: flex; height: 7px; border-radius: 4px; overflow: hidden; background: var(--paper-2); margin: 20px 0 4px; }
.bd-meter span { display: block; height: 100%; transition: width .35s ease; }
.bd-empty { font-size: 14px; color: var(--ink-mute); font-style: italic; font-family: var(--serif); padding: 18px 0 4px; }

.sub-split { margin-top: 26px; border-top: 1px solid var(--line); padding-top: 4px; }
.sub-split .ss-row {
  display: flex; justify-content: space-between; align-items: baseline;
  padding: 11px 0; border-bottom: 1px solid var(--line-soft);
}
.sub-split .ss-row .l { font-size: 13.5px; color: var(--ink-soft); }
.sub-split .ss-row .r { font-family: var(--mono); font-size: 14px; color: var(--ink); font-variant-numeric: tabular-nums; }

/* ============ ASSUMPTIONS ============ */
.assumptions { border-top: 1px solid var(--line); }
.as-grid { display: grid; grid-template-columns: 1fr 1fr; }
.as-cell { padding: 15px 0; border-bottom: 1px solid var(--line-soft); }
.as-cell:nth-child(odd) { padding-right: 20px; border-right: 1px solid var(--line-soft); }
.as-cell:nth-child(even) { padding-left: 20px; }
.as-cell .k { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-mute); }
.as-cell .v { font-family: var(--serif); font-size: 25px; letter-spacing: -0.015em; margin-top: 3px; }
.result-actions { display: flex; gap: 10px; margin-top: 26px; }

/* ============ MODAL ============ */
.modal-scrim {
  position: fixed; inset: 0; z-index: 100; background: rgba(26, 22, 18, 0.42);
  backdrop-filter: blur(3px); -webkit-backdrop-filter: blur(3px);
  display: flex; align-items: flex-start; justify-content: center;
  padding: 40px 20px; overflow-y: auto;
  opacity: 0; pointer-events: none; transition: opacity .2s;
}
.modal-scrim.open { opacity: 1; pointer-events: auto; }
.modal {
  width: min(880px, 100%); background: var(--paper); border: 1px solid var(--line);
  border-radius: 10px; box-shadow: 0 40px 80px -30px rgba(26,22,18,0.5);
  overflow: hidden; transform: translateY(12px); transition: transform .22s;
}
.modal-scrim.open .modal { transform: translateY(0); }
.modal-head {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 20px;
  padding: 26px 32px 22px; border-bottom: 1px solid var(--line); background: var(--panel);
}
.modal-head .mh-l { display: flex; flex-direction: column; gap: 6px; }
.modal-head h2 { font-family: var(--serif); font-size: 38px; line-height: 0.95; letter-spacing: -0.02em; }
.modal-close {
  border: 1px solid var(--line); background: transparent; width: 38px; height: 38px;
  border-radius: 50%; font-size: 20px; color: var(--ink-mute); line-height: 1; flex: none;
  display: flex; align-items: center; justify-content: center; transition: all .15s;
}
.modal-close:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.modal-body { padding: 26px 32px 8px; max-height: 56vh; overflow-y: auto; }
.modal-form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px 24px; }
.modal-form-grid .field.full { grid-column: 1 / -1; }

/* segmented control */
.segmented { display: flex; border: 1px solid var(--line); border-radius: 5px; overflow: hidden; background: var(--panel); }
.segmented button {
  flex: 1; border: 0; background: transparent; padding: 10px 8px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--ink-mute); border-right: 1px solid var(--line); transition: all .15s;
}
.segmented button:last-child { border-right: 0; }
.segmented button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }

/* select */
.select-shell { position: relative; border: 1px solid var(--line); background: var(--panel); border-radius: 5px; }
.select-shell:focus-within { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
.select-shell select {
  width: 100%; border: 0; background: transparent; outline: none; appearance: none;
  font-family: var(--sans); font-size: 14px; color: var(--ink);
  padding: 11px 36px 11px 12px; cursor: pointer;
}
.select-shell::after { content: "▾"; position: absolute; right: 13px; top: 50%; transform: translateY(-50%); color: var(--ink-mute); pointer-events: none; font-size: 12px; }

/* modal preview footer */
.modal-preview {
  border-top: 1px solid var(--line); background: var(--ink); color: var(--paper);
  padding: 20px 32px; display: grid; grid-template-columns: auto 1fr; gap: 28px; align-items: center;
}
.modal-preview .mp-hero { display: flex; flex-direction: column; gap: 3px; }
.modal-preview .mp-hero .k { font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent-bright); }
.modal-preview .mp-hero .v { font-family: var(--serif); font-size: 42px; line-height: 0.95; letter-spacing: -0.02em; }
.modal-preview .mp-split { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; border-left: 1px solid rgba(255,255,255,0.14); }
.modal-preview .mp-split .c { padding: 2px 16px; border-right: 1px solid rgba(255,255,255,0.14); }
.modal-preview .mp-split .c:last-child { border-right: 0; }
.modal-preview .mp-split .c .k { font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-faint); }
.modal-preview .mp-split .c .v { font-family: var(--mono); font-size: 15px; color: var(--paper); margin-top: 4px; font-variant-numeric: tabular-nums; }
.modal-foot {
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  padding: 18px 32px; border-top: 1px solid var(--line); background: var(--panel);
}
.modal-foot .right { display: flex; gap: 10px; }
.btn.danger { border-color: var(--line); color: var(--neg); }
.btn.danger:hover { background: var(--neg); border-color: var(--neg); color: var(--paper); }

/* toast */
.toast {
  position: fixed; bottom: 28px; left: 50%; transform: translate(-50%, 20px);
  background: var(--ink); color: var(--paper); padding: 13px 22px; border-radius: 999px;
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.06em; z-index: 200;
  opacity: 0; pointer-events: none; transition: all .25s; display: flex; align-items: center; gap: 10px;
}
.toast .d { width: 7px; height: 7px; border-radius: 50%; background: var(--accent-bright); }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* footer */
footer.site {
  margin-top: 40px; background: var(--ink); color: var(--ink-faint);
  border-top: 1px solid rgba(255,255,255,0.12); padding: 28px 0;
}
footer.site .row { display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: 14px; font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; }
footer.site .logo img { width: 96px; height: auto; }

/* ============ RESPONSIVE ============ */
@media (max-width: 1080px) {
  .layout { grid-template-columns: 1fr; }
  .layout > .config-col { border-right: 0; padding-right: 0; padding-bottom: 8px; }
  .layout > .result-col { padding-left: 0; position: static; border-top: 1px solid var(--line); padding-top: 40px; margin-top: 8px; }
  .kpi-band { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .kpi-band { grid-template-columns: 1fr 1fr; }
  .packages { grid-template-columns: 1fr; }
  .field-grid { grid-template-columns: 1fr 1fr; }
  .modal-form-grid { grid-template-columns: 1fr; }
  .modal-preview { grid-template-columns: 1fr; gap: 16px; }
  .modal-preview .mp-split { border-left: 0; }
  .as-grid { grid-template-columns: 1fr; }
  .as-cell:nth-child(odd) { padding-right: 0; border-right: 0; }
  .as-cell:nth-child(even) { padding-left: 0; }
}
@media (max-width: 460px) {
  .kpi-band { grid-template-columns: 1fr; }
  .field-grid { grid-template-columns: 1fr; }
  .skill-card { grid-template-columns: 1fr; }
  .skill-card .sc-val { text-align: left; flex-direction: row; align-items: baseline; gap: 8px; }
  .skill-card .sc-val .build { margin-top: 0; }
}