/* ============================================================
   Natijalar — imtihon natijalari boʻlimi
   Signature: "band chizigʻi" — har oʻquv yili uchun bitta
   taqsimot chizigʻi, hammasi bitta shkalada. Yakka natija ham
   shu shkalaga qadaladi, shuning uchun oʻquvchi doim oʻz
   kursdoshlari fonida koʻrinadi.
   ============================================================ */

/* Ranglar :root da — modal va boshqa oynalar <body> ga qoʻshiladi,
   ya'ni .nat dan tashqarida boʻladi va oʻzgaruvchilarni koʻra olishi kerak. */
:root {
  --ink: #0f172a;
  --ink-2: #475569;
  --ink-3: #7c8ba1;
  --line: #e2e8f0;
  --surface: #ffffff;
  --surface-2: #f5f8fc;
  --navy: #11386b;
}

.nat {

  /* ketma-ket (sequential) band shkalasi: ochdan toʻqqa.
     Yorqinlik monoton kamayadi; 0–3 qadamda qora, 4–7 da oq yozuv. */
  --b0: #e0eaf6;
  --b1: #bcd4ec;
  --b2: #93b9dd;
  --b3: #689bca;
  --b4: #3f78ae;
  --b5: #245f96;
  --b6: #14457a;
  --b7: #0d2d5c;

  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.nat__intro {
  max-width: 68ch;
  margin: 0 0 40px;
  color: var(--ink-2);
  font-size: 17px;
  line-height: 1.6;
}

.nat__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--navy);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nat h2 {
  margin: 0 0 8px;
  font-size: clamp(22px, 2.4vw, 30px);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.nat__note {
  margin: 10px 0 0;
  color: var(--ink-3);
  font-size: 13px;
  line-height: 1.5;
}

/* ---------- SIGNATURE: yillik taqsimot chiziqlari ---------- */

.record {
  margin: 0 0 44px;
  padding: 28px 28px 22px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--surface);
}

.record__title {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  align-items: baseline;
  justify-content: space-between;
  margin: 0 0 22px;
}

.record__title h3 {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
}

.record__legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  align-items: center;
  color: var(--ink-2);
  font-size: 12px;
}

.record__legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.record__legend i {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  display: inline-block;
}

.record__row {
  display: grid;
  grid-template-columns: 92px 1fr 84px;
  align-items: center;
  gap: 16px;
  padding: 9px 0;
}

.record__year {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-2);
  white-space: nowrap;
}

.record__strip {
  display: flex;
  gap: 2px; /* segmentlar orasida sirt boʻshligʻi */
  height: 34px;
}

.record__seg {
  position: relative;
  display: grid;
  place-items: center;
  min-width: 0;
  border: 0;
  padding: 0;
  font: inherit;
  font-size: 12px;
  font-weight: 600;
  color: #fff;
  cursor: default;
  transition: filter 0.15s ease;
}

.record__seg:first-child { border-radius: 6px 0 0 6px; }
.record__seg:last-child  { border-radius: 0 6px 6px 0; }
.record__seg:only-child  { border-radius: 6px; }
.record__seg:hover,
.record__seg:focus-visible { filter: brightness(1.08); outline: none; }
.record__seg:focus-visible { box-shadow: 0 0 0 2px #fff, 0 0 0 4px var(--navy); z-index: 2; }
.record__seg--light { color: var(--ink); }
.record__seg span { padding: 0 2px; }

.record__empty {
  flex: 1;
  border-radius: 6px;
  border: 1px dashed var(--line);
  display: grid;
  place-items: center;
  color: var(--ink-3);
  font-size: 12px;
}

.record__avg {
  text-align: right;
  font-size: 20px;
  font-weight: 300;
  letter-spacing: -0.02em;
  color: var(--navy);
}

.record__avg small {
  display: block;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--ink-3);
  text-transform: uppercase;
}

.record__scale {
  display: grid;
  grid-template-columns: 92px 1fr 84px;
  gap: 16px;
  margin-top: 10px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  color: var(--ink-3);
  font-size: 11px;
}

.record__scale div:nth-child(2) {
  display: flex;
  justify-content: space-between;
}

/* ---------- statistika plitkalari ---------- */

.nat__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 14px;
  margin: 0 0 44px;
}

.stat {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
}

.stat__val {
  font-size: 34px;
  font-weight: 300;
  letter-spacing: -0.04em;
  line-height: 1.05;
  color: var(--navy);
}

.stat__val sup {
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0;
  vertical-align: super;
  color: var(--ink-3);
}

.stat__label {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.4;
  color: var(--ink-2);
}

/* ---------- filtrlar (bitta qator) ---------- */

.filters {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin: 0 0 20px;
  padding: 14px 0;
  background: linear-gradient(var(--surface-2) 82%, rgba(245, 248, 252, 0));
}

.filters label {
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-2);
}

.filters select,
.filters input[type="search"] {
  height: 40px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  font-size: 14px;
}

/* sayt uslublari select ga width:100% beradi — bu yerda mazmunga qarab oʻlchansin */
.filters select {
  flex: 0 0 auto;
  width: auto;
  min-width: 150px;
  max-width: 220px;
}

.filters input[type="search"] {
  flex: 1 1 190px;
  min-width: 150px;
}

.filters select:focus-visible,
.filters input:focus-visible,
.filters button:focus-visible {
  outline: 2px solid var(--navy);
  outline-offset: 1px;
}

.filters__count {
  margin-left: auto;
  color: var(--ink-2);
  font-size: 13px;
  white-space: nowrap;
}

.filters__view {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  background: var(--surface);
}

.filters__view button {
  height: 40px;
  padding: 0 14px;
  border: 0;
  background: transparent;
  color: var(--ink-2);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}

.filters__view button[aria-pressed="true"] {
  background: var(--navy);
  color: #fff;
}

/* ---------- natijalar roʻyxati ---------- */

.results {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.res {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 14px;
  align-items: center;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
}

.res__name {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.35;
}

.res__meta {
  grid-column: 1;
  color: var(--ink-3);
  font-size: 12px;
}

.res__score {
  grid-row: 1 / 3;
  grid-column: 2;
  display: grid;
  place-items: center;
  min-width: 62px;
  padding: 8px 10px;
  border-radius: 10px;
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: #fff;
}

.res__score--light { color: var(--ink); }

/* yakka natija — kursdoshlar shkalasida */
.res__pin {
  grid-column: 1 / -1;
  display: flex;
  gap: 2px;
  height: 6px;
  margin-top: 12px;
}

.res__pin i {
  flex: 1;
  border-radius: 2px;
  background: var(--line);
}

.res__pin i.on { background: currentColor; }

/* A-Level: fanlar boʻyicha baholar */
.res__subjects {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}

.subj {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px 4px 6px;
  border-radius: 8px;
  background: var(--surface-2);
  font-size: 12px;
  color: var(--ink-2);
}

.subj b {
  display: grid;
  place-items: center;
  min-width: 22px;
  height: 22px;
  border-radius: 6px;
  font-size: 12px;
  color: #fff;
}

.subj b.light { color: var(--ink); }

/* ---------- jadval koʻrinishi ---------- */

.tablewrap { overflow-x: auto; }

.nat table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.nat th,
.nat td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  white-space: nowrap;
}

.nat th {
  position: sticky;
  top: 0;
  background: var(--surface);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.nat tbody tr:hover { background: var(--surface-2); }

.nat__empty {
  padding: 44px 20px;
  border: 1px dashed var(--line);
  border-radius: 14px;
  text-align: center;
  color: var(--ink-2);
}

.nat__empty b { display: block; margin-bottom: 6px; color: var(--ink); }

/* ---------- boʻlim yoʻnaltirgichlari (hub) ---------- */

.exams {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
  margin: 0 0 44px;
}

.exam {
  display: block;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
  color: inherit;
  text-decoration: none;
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.exam:hover {
  border-color: var(--navy);
  transform: translateY(-2px);
}

.exam h3 {
  margin: 0 0 4px;
  font-size: 18px;
  font-weight: 600;
}

.exam p {
  margin: 0 0 16px;
  color: var(--ink-2);
  font-size: 13px;
  line-height: 1.5;
}

.exam__n {
  font-size: 30px;
  font-weight: 300;
  letter-spacing: -0.03em;
  color: var(--navy);
}

.exam__n small {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0;
  color: var(--ink-3);
}

/* ---------- bitiruvchilar yoʻnalishi ---------- */

.dest {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.dest li {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2px 14px;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
}

.dest b { font-size: 15px; font-weight: 600; }
.dest span { color: var(--ink-3); font-size: 12px; }

.dest em {
  grid-row: 1 / 3;
  grid-column: 2;
  align-self: center;
  font-style: normal;
  font-size: 13px;
  color: var(--navy);
  text-align: right;
}

/* ============================================================
   Diagrammalar (statistika sahifasi)
   Kategoriyali palitra tekshiruvdan oʻtgan: yorqinlik oraligʻi,
   xroma, daltonizmda ajralish va sirt kontrasti — hammasi PASS.
   ============================================================ */

.charts {
  display: grid;
  /* ikkitadan ustun — SVG viewBox kengligiga yaqin qolsin, aks holda
     yozuvlar tor kartochkada kichrayib, keng kartochkada kattalashadi */
  grid-template-columns: repeat(auto-fit, minmax(460px, 1fr));
  gap: 18px;
  margin: 0 0 44px;
}

.chart {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
}

.chart--wide { grid-column: 1 / -1; }

.chart__head {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 14px;
  margin: 0 0 22px;
}

.chart__badge {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  font-size: 22px;
}

.chart__head h3 {
  margin: 0 0 3px;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.chart__head p {
  margin: 0;
  color: var(--ink-3);
  font-size: 13px;
  line-height: 1.5;
}

.chart__head h3,
.chart__head p { grid-column: 2; }

.chart__head h3 { grid-row: 1; }
.chart__head p { grid-row: 2; }
.chart__badge { grid-row: 1 / 3; }

/* ---------- daraja taqsimoti (plitka + progress) ---------- */

.tabs {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 4px;
  border-radius: 12px;
  background: var(--surface-2);
}

.tabs button {
  padding: 9px 16px;
  border: 0;
  border-radius: 9px;
  background: transparent;
  color: var(--ink-2);
  font: inherit;
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
}

.tabs button[aria-selected="true"] {
  background: var(--surface);
  color: var(--ink);
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.1);
}

.tabs button:focus-visible { outline: 2px solid var(--navy); outline-offset: 1px; }

.gradetiles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(126px, 1fr));
  gap: 12px;
  margin: 22px 0 26px;
}

.gtile {
  padding: 16px 18px 18px;
  border-radius: 16px;
  color: #fff;
}

.gtile span {
  display: block;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.9;
}

.gtile b {
  display: block;
  margin-top: 8px;
  font-size: 34px;
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1;
}

.gtile em {
  font-style: normal;
  font-size: 13px;
  font-weight: 500;
  opacity: 0.9;
}

.gradebars { display: grid; gap: 16px; }

.gbar {
  display: grid;
  grid-template-columns: 34px 1fr auto auto;
  align-items: center;
  gap: 8px 12px;
}

.gbar__badge {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--ink);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
}

.gbar__name { font-size: 14.5px; font-weight: 600; }

.gbar__n {
  padding: 4px 10px;
  border-radius: 8px;
  background: var(--surface-2);
  color: var(--ink-2);
  font-size: 12.5px;
  font-weight: 600;
  white-space: nowrap;
}

.gbar__pct {
  min-width: 44px;
  color: var(--ink-3);
  font-size: 12.5px;
  text-align: right;
}

.gbar__track {
  grid-column: 1 / -1;
  height: 10px;
  border-radius: 999px;
  background: var(--surface-2);
  overflow: hidden;
}

.gbar__fill {
  height: 100%;
  border-radius: 999px;
  transition: width 0.5s ease;
}

/* ---------- imtihon kartalari ---------- */

.examcards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px;
  margin: 0 0 24px;
}

.examcard {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: start;
  gap: 14px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
}

.examcard i {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  font-size: 19px;
  font-style: normal;
  font-weight: 700;
}

.examcard h4 { margin: 0 0 4px; font-size: 15.5px; font-weight: 600; }
.examcard p { margin: 0; color: var(--ink-3); font-size: 13px; line-height: 1.5; }

.chart svg { display: block; width: 100%; height: auto; overflow: visible; }

/* doiraviy diagramma cheksiz kattalashmasin */
.chart--donut svg { max-width: 300px; margin: 0 auto; }

.chart .grid line { stroke: var(--line); stroke-width: 1; }
.chart .axis text { fill: var(--ink-3); font-size: 11px; }
.chart .vlabel { fill: var(--ink-2); font-size: 11px; font-weight: 600; }
.chart .seglabel { font-size: 11px; font-weight: 600; pointer-events: none; }

.chart rect.seg,
.chart path.arc { transition: opacity 0.15s ease; }

.chart rect.seg:hover,
.chart path.arc:hover { opacity: 0.82; }

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.legend li {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--ink-2);
  font-size: 12.5px;
}

.legend i {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  flex: 0 0 auto;
}

.legend b { color: var(--ink); font-weight: 600; }

/* donut markazidagi jami */
.donut__total {
  fill: var(--ink);
  font-size: 26px;
  font-weight: 300;
  letter-spacing: -0.03em;
}

.donut__cap {
  fill: var(--ink-3);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* katta koʻrsatkich */
.headline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
  margin: 0 0 44px;
  padding: 30px;
  border-radius: 20px;
  background: linear-gradient(135deg, #11386b, #2a5fa8);
  color: #fff;
}

.headline div p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.78);
}

.headline b {
  display: block;
  margin-bottom: 4px;
  font-size: 40px;
  font-weight: 300;
  letter-spacing: -0.04em;
  line-height: 1.05;
}

.headline small {
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0;
}

/* ---------- moslashuvchanlik ---------- */

@media (max-width: 900px) {
  .record { padding: 20px 16px 16px; }
  .record__row,
  .record__scale { grid-template-columns: 62px 1fr 62px; gap: 10px; }
  .record__year { font-size: 11px; }
  .record__avg { font-size: 17px; }
  .record__seg { font-size: 11px; }
  .results { grid-template-columns: 1fr; }
  .filters__count { margin-left: 0; width: 100%; }
  /* kichik ekranda filtrlar oʻralib balandlashadi — yopishtirilsa ekranni yeydi */
  .filters { position: static; background: none; }
  .filters select { max-width: none; flex: 1 1 140px; }
}

@media (max-width: 560px) {
  .record__row { grid-template-columns: 52px 1fr 52px; }
  .record__strip { height: 28px; }
  .stat__val { font-size: 28px; }
}

@media (max-width: 900px) {
  .charts { grid-template-columns: 1fr; }
  .chart { padding: 18px 14px; }
  .headline { padding: 22px 18px; }
  .headline b { font-size: 32px; }
}

@media (prefers-reduced-motion: reduce) {
  .exam, .record__seg { transition: none; }
  .exam:hover { transform: none; }
}
