/* ÇKKV Hesaplama — arayüz stilleri */
:root {
  --bg: #f4f6fb;
  --surface: #ffffff;
  --ink: #1c2333;
  --ink-soft: #5a6478;
  --line: #e3e7f0;
  --primary: #4f46e5;
  --primary-dark: #4338ca;
  --primary-soft: #eef0fe;
  --benefit: #0f9d6b;
  --benefit-soft: #e3f6ee;
  --cost: #d9534f;
  --cost-soft: #fbeae9;
  --warn-bg: #fff6e6;
  --warn-ink: #8a5a00;
  --gold: #f4b400;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(20, 30, 60, .08), 0 8px 24px rgba(20, 30, 60, .06);
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.5;
}

h1, h2, h3 { margin: 0; font-weight: 650; }

/* ---------- Header ---------- */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
}
.brand { display: flex; align-items: center; gap: 14px; }
.logo {
  display: grid;
  place-items: center;
  width: 46px; height: 46px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), #7c6cf0);
  color: #fff;
  font-weight: 800;
  letter-spacing: .5px;
  font-size: 15px;
}
.app-header h1 { font-size: 18px; }
.subtitle { margin: 2px 0 0; font-size: 12px; color: var(--ink-soft); letter-spacing: .2px; }

.header-right { display: flex; align-items: center; gap: 18px; }
.mode-switch {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-soft);
  cursor: pointer;
  user-select: none;
}
.mode-switch input { width: 16px; height: 16px; accent-color: var(--primary); cursor: pointer; }

/* Gelişmiş moda özel öğeler: Basit modda gizli */
body:not(.advanced) .adv-only { display: none !important; }

.tabs { display: flex; gap: 6px; }
.tab {
  border: none;
  background: transparent;
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 8px;
  cursor: pointer;
}
.tab:hover { background: var(--primary-soft); color: var(--primary-dark); }
.tab.active { background: var(--primary); color: #fff; }

/* ---------- Layout ---------- */
main { max-width: 1120px; margin: 0 auto; padding: 24px; }
.view { display: none; }
.view.active { display: block; }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 20px;
}
.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}
.card-head h2 { font-size: 16px; }
.hint { font-size: 13px; color: var(--ink-soft); margin: 0 0 14px; }
.toolbar { display: flex; gap: 8px; flex-wrap: wrap; }

/* ---------- Buttons ---------- */
.btn {
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: background .15s, border-color .15s, color .15s;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-soft { background: var(--primary-soft); color: var(--primary-dark); }
.btn-soft:hover { background: #e1e4fd; }
.btn-ghost { background: transparent; color: var(--ink-soft); border-color: var(--line); }
.btn-ghost:hover { background: var(--bg); color: var(--ink); }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* ---------- Matrix table ---------- */
.table-wrap { overflow-x: auto; }
table.matrix { border-collapse: collapse; width: 100%; font-size: 14px; }
table.matrix th, table.matrix td {
  border: 1px solid var(--line);
  padding: 6px 8px;
  text-align: center;
  vertical-align: middle;
}
table.matrix thead th { background: #fafbff; }
table.matrix .corner { background: #f0f2fa; }
table.matrix input[type="text"],
table.matrix input[type="number"] {
  width: 100%;
  min-width: 64px;
  border: 1px solid transparent;
  background: transparent;
  padding: 5px 6px;
  font-size: 14px;
  text-align: center;
  border-radius: 6px;
  font-family: inherit;
  color: var(--ink);
}
table.matrix input:focus {
  outline: none;
  border-color: var(--primary);
  background: #fff;
}
.col-head input { font-weight: 650; }
.row-head input { font-weight: 600; text-align: left; }
td.num input { font-variant-numeric: tabular-nums; }

.type-toggle {
  display: inline-block;
  border: none;
  border-radius: 999px;
  padding: 3px 10px;
  font-size: 11.5px;
  font-weight: 700;
  cursor: pointer;
  letter-spacing: .2px;
}
.type-toggle.benefit { background: var(--benefit-soft); color: var(--benefit); }
.type-toggle.cost { background: var(--cost-soft); color: var(--cost); }

.weight-cell input { background: #fbfcff !important; }
.del-btn {
  border: none;
  background: transparent;
  color: var(--cost);
  font-size: 15px;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 6px;
  line-height: 1;
}
.del-btn:hover { background: var(--cost-soft); }
.weight-row td { background: #fbfcff; }
.weight-label { font-weight: 650; font-size: 12.5px; color: var(--ink-soft); text-align: right; }

.weight-status {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 12px;
  font-size: 13px;
  color: var(--ink-soft);
  flex-wrap: wrap;
}
.weight-status strong { color: var(--ink); font-variant-numeric: tabular-nums; }
.weight-status.bad strong { color: var(--cost); }
.weight-derive {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 10px;
}
.weight-src-label { color: var(--ink-soft); font-weight: 600; font-size: 13px; }
#weight-help { margin-top: 6px; }

input.cell-bad { border-color: var(--cost) !important; background: var(--cost-soft) !important; }
.paste-area {
  width: 100%;
  font-family: var(--mono);
  font-size: 13px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  resize: vertical;
}

/* ---------- Method selection ---------- */
.method-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}
.method-chip {
  position: relative;
  border: 1.5px solid var(--line);
  background: var(--surface);
  border-radius: 10px;
  padding: 12px 12px 12px 14px;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
}
.method-chip:hover { border-color: #c7ccf5; }
.method-chip.active { border-color: var(--primary); background: var(--primary-soft); }
.method-chip .m-name { font-weight: 700; font-size: 14px; color: var(--ink); }
.method-chip .m-desc { font-size: 11.5px; color: var(--ink-soft); margin-top: 2px; }
.method-chip .info-dot {
  position: absolute;
  top: 8px; right: 8px;
  width: 18px; height: 18px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 700;
  display: grid; place-items: center;
  cursor: pointer;
}
.method-chip .info-dot:hover { border-color: var(--primary); color: var(--primary); }

/* ---------- Params ---------- */
.params { margin-bottom: 6px; }
.params:empty { display: none; }
.param-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 10px; }
.param-row label { font-size: 13px; font-weight: 600; color: var(--ink-soft); min-width: 120px; }
.param-row input[type="range"] { flex: 1; max-width: 260px; }
.param-row .val { font-variant-numeric: tabular-nums; font-weight: 700; min-width: 42px; }
.param-note { font-size: 12px; color: var(--ink-soft); }
select, input[type="number"].field {
  font-family: inherit;
  font-size: 13px;
  padding: 6px 8px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fff;
  color: var(--ink);
}
.pref-table { font-size: 13px; border-collapse: collapse; width: 100%; }
.pref-table th, .pref-table td { padding: 6px 8px; border-bottom: 1px solid var(--line); text-align: left; }
.pref-table input.field { width: 80px; }

.actions { display: flex; gap: 10px; margin-top: 8px; flex-wrap: wrap; }

/* ---------- Results ---------- */
.warnings:empty { display: none; }
.warn {
  background: var(--warn-bg);
  color: var(--warn-ink);
  border: 1px solid #f3dca0;
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 13px;
  margin-bottom: 8px;
}
#result-summary { font-size: 14px; margin-bottom: 16px; }
.winner {
  display: inline-flex; align-items: center; gap: 8px;
  background: linear-gradient(135deg, #fff7e0, #fffdf5);
  border: 1px solid #f3dca0;
  border-radius: 10px;
  padding: 10px 16px;
  font-weight: 650;
}
.winner .medal { font-size: 20px; }

.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-bottom: 18px;
}
.chart-box {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px;
  min-height: 280px;
}
.chart-box h3 { font-size: 13px; color: var(--ink-soft); margin-bottom: 8px; font-weight: 600; }

table.result {
  border-collapse: collapse;
  width: 100%;
  font-size: 14px;
}
table.result th, table.result td {
  border-bottom: 1px solid var(--line);
  padding: 9px 12px;
  text-align: left;
}
table.result th { background: #fafbff; font-size: 12.5px; color: var(--ink-soft); text-transform: uppercase; letter-spacing: .3px; }
table.result td.rank { font-weight: 800; color: var(--primary-dark); width: 56px; }
table.result tr.top td { background: var(--primary-soft); }
table.result td.score { font-variant-numeric: tabular-nums; }
.bar-cell { position: relative; min-width: 140px; }
.bar-cell .bar {
  height: 8px; border-radius: 4px; background: var(--primary);
  display: inline-block; vertical-align: middle;
}

#result-details { margin-top: 18px; }
.detail-block { margin-top: 16px; }
.detail-block h3 { font-size: 14px; margin-bottom: 8px; }
.matrix-mini { border-collapse: collapse; font-size: 12.5px; }
.matrix-mini th, .matrix-mini td { border: 1px solid var(--line); padding: 4px 8px; text-align: center; font-variant-numeric: tabular-nums; }
.kv { display: flex; gap: 18px; flex-wrap: wrap; }
.kv .pair { background: var(--bg); border-radius: 8px; padding: 8px 14px; font-size: 13px; }
.kv .pair b { display: block; font-size: 16px; color: var(--ink); }
.pill { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 12px; font-weight: 700; }
.pill.ok { background: var(--benefit-soft); color: var(--benefit); }
.pill.bad { background: var(--cost-soft); color: var(--cost); }

/* ---------- Modal ---------- */
.modal {
  position: fixed; inset: 0;
  background: rgba(20, 28, 50, .45);
  display: grid; place-items: center;
  z-index: 50;
  padding: 20px;
}
.modal[hidden] { display: none; }
.modal-box {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 22px;
  width: min(720px, 100%);
  max-height: 90vh;
  overflow: auto;
  box-shadow: var(--shadow);
}
.ahp-result { margin: 14px 0; font-size: 13px; }
select.saaty { width: 100%; min-width: 70px; border: none; background: transparent; font-family: inherit; font-size: 13px; text-align: center; }

/* ---------- Help ---------- */
.help-guide { display: grid; gap: 8px; }
.guide-item {
  display: flex; gap: 10px; align-items: baseline;
  padding: 8px 12px; border-radius: 8px; background: var(--bg); font-size: 14px;
}
.guide-item .arrow { color: var(--primary); font-weight: 800; }
.guide-item .pick { font-weight: 700; color: var(--primary-dark); }

.help-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 16px; }
.help-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px; }
.help-card h3 { font-size: 16px; color: var(--primary-dark); }
.help-card .for { font-size: 13px; color: var(--ink-soft); margin: 6px 0 12px; }
.help-card .pros-cons { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.help-card ul { margin: 6px 0 0; padding-left: 18px; font-size: 12.5px; }
.help-card .pros li::marker { color: var(--benefit); }
.help-card .cons li::marker { color: var(--cost); }
.help-card .lbl { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .3px; }
.help-card .lbl.pro { color: var(--benefit); }
.help-card .lbl.con { color: var(--cost); }

/* ---------- Info popover ---------- */
.info-popover {
  position: absolute;
  z-index: 60;
  max-width: 300px;
  background: #1c2333;
  color: #fff;
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 12.5px;
  box-shadow: 0 10px 30px rgba(0,0,0,.25);
}
.info-popover[hidden] { display: none; }
.info-popover h4 { margin: 0 0 6px; font-size: 13.5px; }
.info-popover .for { color: #c7ccf5; margin-bottom: 6px; }

/* ---------- Footer ---------- */
.app-footer {
  text-align: center;
  color: var(--ink-soft);
  font-size: 12.5px;
  padding: 24px;
}

@media (max-width: 760px) {
  .result-grid { grid-template-columns: 1fr; }
  .help-card .pros-cons { grid-template-columns: 1fr; }
  .app-header { flex-direction: column; align-items: stretch; }
}