/* Tham tu Amateur - khung ho so + bia ho so dung chung cho Kho cau hoi.
   Khong dung CSS Grid, khong dung position absolute/fixed. */

:root {
  --ttf-ink: #0b0b0c;
  --ttf-charcoal: #161719;
  --ttf-graphite: #383a3f;
  --ttf-paper: #ece6d8;
  --ttf-paper-bright: #f7f3e9;
  --ttf-paper-shade: #d8cfbb;
  --ttf-paper-dim: #58564e;
  --ttf-manila: #e8e0cd;
  --ttf-manila-deep: #c7bb9e;
  --ttf-red: #b3261e;
  --ttf-red-bright: #ff6a57;

  --ttf-font-display: 'Archivo Narrow', 'Be Vietnam Pro', system-ui, sans-serif;
  --ttf-font-body: 'Be Vietnam Pro', system-ui, sans-serif;
  --ttf-font-mono: 'IBM Plex Mono', ui-monospace, monospace;

  --ttf-file-w: 44.2rem;
  --ttf-radius: 2px;
  --ttf-tap: 2.9rem;
}

/* ---------- khung ho so (giong khung quiz co san) ---------- */
.ttf-file {
  display: flex;
  flex-direction: column;
  gap: 0;
  width: 100%;
  max-width: var(--ttf-file-w);
  margin: 0 auto;
  padding: 0;
  color: var(--ttf-ink);
  background: var(--ttf-paper-bright);
  border: 2px solid var(--ttf-ink);
  border-radius: var(--ttf-radius);
  box-shadow: 0.425rem 0.425rem 0 0 var(--ttf-ink);
}

.ttf-file .ttf-bar {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  padding: 0.6rem 1.2rem;
  background: var(--ttf-ink);
}

.ttf-file .ttf-bar-label,
.ttf-file .ttf-bar-count {
  margin: 0;
  font-family: var(--ttf-font-mono);
  font-weight: 400;
  font-size: 0.7719rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.ttf-file .ttf-bar-label { color: var(--ttf-paper); }
.ttf-file .ttf-bar-count { color: var(--ttf-red-bright); }

.ttf-file .ttf-body {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  padding: clamp(1.6rem, 1.2rem + 1.6vw, 2.4rem);
}

.ttf-file [hidden] { display: none !important; }
/* ---------- bia ho so (the giay cu) ---------- */
.ttf-card {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  width: 100%;
  min-width: 0;
  padding: 1.15rem 1.05rem 1rem;
  color: var(--ttf-ink);
  background-color: var(--ttf-manila);
  background-image:
    radial-gradient(130% 90% at 0% 0%, rgba(124, 100, 58, 0.20), rgba(124, 100, 58, 0) 58%),
    radial-gradient(120% 80% at 100% 4%, rgba(124, 100, 58, 0.16), rgba(124, 100, 58, 0) 52%),
    radial-gradient(140% 70% at 50% 100%, rgba(124, 100, 58, 0.14), rgba(124, 100, 58, 0) 60%);
  border: 1px solid var(--ttf-manila-deep);
  border-radius: 3px;
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.45) inset,
    0 6px 18px rgba(11, 11, 12, 0.12);
}

.ttf-card * { box-sizing: border-box; }

/* kep giay vat qua mep tren - keo len bang margin am, khong dung absolute */
.ttf-card .ttf-clip {
  display: flex;
  align-self: flex-start;
  margin: -1.85rem 0 -0.5rem 1.15rem;
  color: var(--ttf-graphite);
}

.ttf-card .ttf-clip svg { display: block; width: 1.25rem; height: 2.25rem; }

/* ---------- hang tren: ma ho so + con dau ---------- */
.ttf-card .ttf-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.6rem 1rem;
  min-height: 2rem;
}

.ttf-card .ttf-code {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  font-family: var(--ttf-font-mono);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  line-height: 1.4;
  color: var(--ttf-ink);
}

.ttf-card .ttf-code-mark {
  display: block;
  flex: 0 0 auto;
  width: 0.55rem;
  height: 0.55rem;
  background: var(--ttf-red);
}

.ttf-card .ttf-stamp {
  margin: 0;
  padding: 0.18rem 0.55rem;
  font-family: var(--ttf-font-display);
  font-weight: 700;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  line-height: 1.45;
  text-transform: uppercase;
  color: var(--ttf-red);
  border: 2px solid var(--ttf-red);
  border-radius: 2px;
  opacity: 0.82;
  transform: rotate(-7deg);
}
.ttf-card .ttf-rule {
  height: 0;
  margin: 0;
  padding: 0;
  border: 0;
  border-top: 1px solid var(--ttf-manila-deep);
}

/* ---------- phan giua: icon + nhan + mo ta ---------- */
.ttf-card .ttf-mid {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  gap: 0.8rem;
  padding: 0.35rem 0 0.5rem;
}

.ttf-card .ttf-icon {
  display: flex;
  flex: 0 0 auto;
  width: 1.75rem;
  height: 1.75rem;
  margin-top: 0.3rem;
  color: var(--ttf-ink);
}

.ttf-card .ttf-icon svg { display: block; width: 100%; height: 100%; }

.ttf-card .ttf-mid-body {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.5rem;
  flex: 1 1 auto;
  min-width: 0;
  padding-left: 0.8rem;
  border-left: 1px solid var(--ttf-manila-deep);
}

.ttf-card .ttf-tag {
  margin: 0;
  padding: 0.2rem 0.55rem;
  font-family: var(--ttf-font-display);
  font-weight: 700;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  line-height: 1.5;
  text-transform: uppercase;
  color: var(--ttf-paper-bright);
  background: var(--ttf-red);
  border-radius: 2px;
}

.ttf-card .ttf-desc {
  margin: 0;
  font-family: var(--ttf-font-mono);
  font-size: 0.76rem;
  line-height: 1.7;
  letter-spacing: 0.01em;
  color: var(--ttf-ink);
}

/* ---------- chan the: thong tin + nut bat dau ---------- */
.ttf-card .ttf-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  flex-wrap: nowrap;
  justify-content: space-between;
  gap: 0.8rem;
  padding-top: 0.45rem;
}

.ttf-card .ttf-metas {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 0.7rem;
  flex: 1 1 auto;
  min-width: 0;
}

.ttf-card .ttf-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  font-family: var(--ttf-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  line-height: 1.5;
  text-transform: uppercase;
  color: var(--ttf-paper-dim);
}

.ttf-card .ttf-meta-icon { display: flex; flex: 0 0 auto; width: 1rem; height: 1rem; }
.ttf-card .ttf-meta-icon svg { display: block; width: 100%; height: 100%; }

.ttf-card .ttf-sep {
  display: block;
  flex: 0 0 auto;
  width: 1px;
  height: 1rem;
  background: var(--ttf-manila-deep);
}


.ttf-card .ttf-start {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 2.6rem;
  margin: 0;
  padding: 0.5rem 1.1rem;
  font-family: var(--ttf-font-display);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  line-height: 1.2;
  text-transform: uppercase;
  color: var(--ttf-paper-bright);
  background: var(--ttf-ink);
  border: 2px solid var(--ttf-ink);
  border-radius: var(--ttf-radius);
  flex: 0 0 auto;
  cursor: pointer;
  transition: background-color 160ms ease, border-color 160ms ease;
}

.ttf-card .ttf-start:hover { background: var(--ttf-red); border-color: var(--ttf-red); }
.ttf-card .ttf-start:focus-visible { outline: 2px solid var(--ttf-red); outline-offset: 3px; }

/* ---------- dien thoai ---------- */
@media (max-width: 36rem) {
  .ttf-card { padding: 1.3rem 1rem 1.1rem; }
  .ttf-card .ttf-stamp { font-size: 0.72rem; letter-spacing: 0.08em; }
  .ttf-card .ttf-mid { gap: 0.75rem; }
  .ttf-card .ttf-icon { width: 1.7rem; height: 1.7rem; }
  .ttf-card .ttf-mid-body { padding-left: 0.7rem; }
  .ttf-card .ttf-foot { flex-wrap: wrap; }
  .ttf-card .ttf-start { flex: 1 1 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .ttf-card .ttf-start { transition-duration: 1ms; }
}
/* ================= HANG HO SO =================
   Hai ho so nam canh nhau. Khi mo mot ho so, ho so do gian het hang,
   ho so con lai tam an di. Bam dau X tren thanh den de dong lai.
   Dung #files-row de thang do uu tien cua global class Elementor. */

#files-row {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  align-items: stretch;
  /* can trai de thang hang voi nhan "Ho so cau hoi" phia tren */
  justify-content: flex-start;
  gap: 1.6rem;
  /* Elementor gan padding 10px cho moi e-flexbox -> bo di de the thang
     hang voi nhan phia tren */
  padding: 0;
}

/* hai ho so cao bang nhau o trang thai bia */
#files-row > * { display: flex; flex-direction: column; }
#files-row .quiz-body,
#files-row .ttf-body,
#files-row .ttr-shell,
#files-row .ttf-file,
#files-row .ttf-card { flex: 1 1 auto; }
/* :not(...) de khong de len class an cua Elementor khi ho so dang mo */
#files-row #tta-intro:not(.hidden),
#files-row .ttr-intro:not([hidden]) { display: flex; flex-direction: column; flex: 1 1 auto; }

#files-row > * {
  flex: 1 1 19rem;
  min-width: 0;
  max-width: 28rem;
  margin: 0;
  padding: 0;
}

#files-row > .is-open {
  flex: 1 1 100%;
  max-width: 44.2rem;
}

#files-row > .is-away { display: none !important; }

#files-row .ttf-file { max-width: none; }

/* thu gon ruot khung lai cho vua cot hep */
#files-row .quiz-body,
#files-row .ttf-body { padding: 1rem; gap: 1rem; }

/* thanh den: nhan day ra, so dem va nut dong nam ben phai */
#files-row .quiz-bar,
#files-row .ttf-bar {
  justify-content: flex-start;
  min-height: 2.5rem;
}

#files-row .quiz-bar-label,
#files-row .ttf-bar-label {
  flex: 1 1 auto;
  min-width: 0;
}

/* ---------- nut dong ho so ---------- */
.ttf-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 2.1rem;
  height: 2.1rem;
  margin: -0.4rem -0.5rem -0.4rem 0;
  padding: 0;
  color: var(--ttf-paper);
  background: transparent;
  border: 1px solid rgba(236, 230, 216, 0.3);
  border-radius: 2px;
  cursor: pointer;
  transition: color 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

.ttf-close svg { display: block; width: 1rem; height: 1rem; }

.ttf-close:hover {
  color: var(--ttf-paper-bright);
  background: rgba(236, 230, 216, 0.12);
  border-color: var(--ttf-paper);
}

.ttf-close:focus-visible {
  outline: 2px solid var(--ttf-red-bright);
  outline-offset: 2px;
}

.ttf-close[hidden] { display: none !important; }

@media (max-width: 48rem) {
  #files-row { gap: 1.2rem; }
  #files-row > * { flex-basis: 100%; max-width: none; }
  .ttf-close { width: 2.6rem; height: 2.6rem; }
  #files-row .quiz-bar,
  #files-row .ttf-bar { min-height: 3rem; }
}

@media (prefers-reduced-motion: reduce) {
  .ttf-close { transition-duration: 1ms; }
}