/* ═══════════════════════════════════════════════════════
   SYNE Carbon — Ratings Methodology Page
   ═══════════════════════════════════════════════════════ */

/* ── FACTOR SCALE ────────────────────────────────────── */
.scale-sec { padding: 88px 0; background: var(--bg-white); }

.rating-scale {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 8px;
  margin-top: 40px;
  margin-bottom: 52px;
}

.rs-tier {
  border-radius: var(--r-md);
  padding: 22px 14px 18px;
  text-align: center;
  border: 1.5px solid var(--line);
  transition: transform .2s, box-shadow .2s;
  cursor: default;
}

.rs-tier:hover { transform: translateY(-3px); box-shadow: var(--sh-md); }

.rs-label {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -.02em;
  margin-bottom: 6px;
}

.rs-range {
  font-size: 11px;
  font-weight: 700;
  color: var(--ink-3);
  letter-spacing: .04em;
  margin-bottom: 10px;
}

.rs-desc {
  font-size: 11.5px;
  line-height: 1.55;
  color: var(--ink-3);
}

/* Tier colours */
.rs-aaa { background: #EEF2FF; border-color: #C7D2FE; }
.rs-aaa .rs-label { color: #4338CA; }
.rs-aa  { background: var(--blue-lt); border-color: var(--blue-mid); }
.rs-aa  .rs-label { color: var(--blue-dark); }
.rs-a   { background: #F0FDF4; border-color: #BBF7D0; }
.rs-a   .rs-label { color: #15803D; }
.rs-bbb { background: #FFF7ED; border-color: #FED7AA; }
.rs-bbb .rs-label { color: #C2410C; }
.rs-bb  { background: var(--amber-lt); border-color: #FDE68A; }
.rs-bb  .rs-label { color: #B45309; }
.rs-b   { background: #FEF2F2; border-color: #FECACA; }
.rs-b   .rs-label { color: #B91C1C; }
.rs-d   { background: #1F2937; border-color: #374151; }
.rs-d   .rs-label { color: #F87171; }
.rs-d   .rs-range  { color: rgba(255,255,255,.35); }
.rs-d   .rs-desc   { color: rgba(255,255,255,.35); }

/* ── 10 FACTORS GRID ─────────────────────────────────── */
.factors-sec { padding: 88px 0; background: var(--bg-grey); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.factors-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  margin-top: 48px;
}

.factor-card {
  background: var(--bg-white);
  border: 1.5px solid var(--line);
  border-radius: var(--r-lg);
  padding: 28px;
  display: flex;
  gap: 20px;
  transition: border-color .18s, box-shadow .18s;
}

.factor-card:hover {
  border-color: var(--blue-mid);
  box-shadow: var(--sh-sm);
}

.factor-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.factor-weight {
  font-size: 11px;
  font-weight: 700;
  color: var(--blue-dark);
  background: var(--blue-lt);
  border: 1px solid var(--blue-mid);
  border-radius: 3px;
  padding: 2px 7px;
  margin-bottom: 8px;
  display: inline-flex;
  letter-spacing: .04em;
}

.factor-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 6px;
  letter-spacing: -.012em;
}

.factor-desc {
  font-size: 13.5px;
  line-height: 1.68;
  color: var(--ink-2);
  margin-bottom: 12px;
}

.factor-inputs {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}

.fi-tag {
  font-size: 11px;
  font-weight: 600;
  color: var(--ink-3);
  background: var(--bg-grey);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 3px 8px;
}

/* ── DATA SOURCES ────────────────────────────────────── */
.datasrc-sec { padding: 88px 0; background: var(--bg-pale); border-top: 1px solid var(--blue-mid); border-bottom: 1px solid var(--blue-mid); }

.datasrc-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 48px;
}

.datasrc-card {
  background: var(--bg-white);
  border: 1.5px solid var(--line);
  border-radius: var(--r-lg);
  padding: 26px;
  transition: border-color .18s, box-shadow .18s;
}

.datasrc-card:hover { border-color: var(--blue-mid); box-shadow: var(--sh-sm); }

.ds-icon {
  width: 38px;
  height: 38px;
  background: var(--blue-lt);
  border-radius: var(--r);
  display: grid;
  place-items: center;
  margin-bottom: 14px;
  color: var(--blue);
}

.ds-icon svg { width: 18px; height: 18px; }

.ds-title { font-size: 14px; font-weight: 700; color: var(--ink); margin-bottom: 4px; }
.ds-source { font-size: 11px; font-weight: 700; color: var(--blue); text-transform: uppercase; letter-spacing: .06em; margin-bottom: 10px; }
.ds-desc { font-size: 13px; line-height: 1.64; color: var(--ink-2); }

/* ── PROCESS TIMELINE ────────────────────────────────── */
.process-sec { padding: 88px 0; background: var(--bg-white); }

.process-steps {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 48px;
  max-width: 800px;
}

.process-steps::before {
  content: '';
  position: absolute;
  left: 19px;
  top: 28px;
  bottom: 14px;
  width: 2px;
  background: linear-gradient(to bottom, var(--blue), var(--line));
}

.ps-item {
  display: flex;
  gap: 24px;
  padding: 0 0 36px;
  align-items: flex-start;
}

.ps-item:last-child { padding-bottom: 0; }

.ps-num {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

.ps-title { font-size: 17px; font-weight: 700; color: var(--ink); margin-bottom: 8px; letter-spacing: -.012em; }
.ps-desc  { font-size: 14px; line-height: 1.7; color: var(--ink-2); }

.ps-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.ps-tag  { font-size: 11px; font-weight: 600; color: var(--blue-dark); background: var(--blue-lt); border: 1px solid var(--blue-mid); border-radius: 3px; padding: 3px 8px; }

/* ── GOVERNANCE ──────────────────────────────────────── */
.gov-sec { padding: 88px 0; background: var(--bg-grey); border-top: 1px solid var(--line); }

.gov-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 48px;
}

.gov-card {
  background: var(--bg-white);
  border: 1.5px solid var(--line);
  border-radius: var(--r-lg);
  padding: 28px;
  transition: border-color .18s;
}

.gov-card:hover { border-color: var(--blue-mid); }

.gov-icon {
  width: 42px;
  height: 42px;
  background: var(--blue-lt);
  border-radius: var(--r);
  display: grid;
  place-items: center;
  margin-bottom: 16px;
  color: var(--blue);
}

.gov-icon svg { width: 20px; height: 20px; }
.gov-title { font-size: 15px; font-weight: 700; color: var(--ink); margin-bottom: 8px; }
.gov-desc  { font-size: 13.5px; line-height: 1.68; color: var(--ink-2); }

/* ── RESPONSIVE ──────────────────────────────────────── */
@media (max-width: 1024px) {
  .rating-scale { grid-template-columns: repeat(4, 1fr); }
  .factors-grid { grid-template-columns: 1fr; }
  .datasrc-grid { grid-template-columns: 1fr 1fr; }
  .gov-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .rating-scale { grid-template-columns: repeat(3, 1fr); }
  .datasrc-grid { grid-template-columns: 1fr; }
  .gov-grid { grid-template-columns: 1fr; }
  .scale-sec, .factors-sec, .datasrc-sec, .process-sec, .gov-sec { padding: 56px 0; }
}

@media (max-width: 520px) {
  .rating-scale { grid-template-columns: 1fr 1fr; }
}

/* ── SECTION HEADER ──────────────────────────────────── */
.meth-sec-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
  margin-bottom: 52px;
}

/* ── METHODOLOGY NOTE ────────────────────────────────── */
.meth-note {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px 24px;
  background: var(--blue-lt);
  border: 1.5px solid var(--blue-mid);
  border-radius: var(--r-md);
  margin-top: 24px;
}
.mn-icon {
  width: 36px; height: 36px;
  background: var(--blue);
  border-radius: 50%;
  display: grid; place-items: center;
  flex-shrink: 0;
  color: #fff;
}
.mn-icon svg { width: 17px; height: 17px; }
.mn-title { font-size: 14px; font-weight: 700; color: var(--ink); margin-bottom: 5px; }
.mn-desc  { font-size: 13.5px; line-height: 1.66; color: var(--ink-2); }

/* ── SCORE COMPOSITION BARS ──────────────────────────── */
.score-comp {
  margin-top: 48px;
  background: var(--bg-grey);
  border: 1.5px solid var(--line);
  border-radius: var(--r-lg);
  padding: 28px 32px;
}
.sc-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: 22px;
}
.sc-bars { display: flex; flex-direction: column; gap: 10px; }
.sc-bar-row { display: flex; align-items: center; gap: 12px; }
.sc-bar-label { font-size: 13px; color: var(--ink-2); width: 240px; flex-shrink: 0; }
.sc-bar-track { flex: 1; height: 8px; background: var(--line); border-radius: 4px; overflow: hidden; }
.sc-bar-fill  { height: 100%; border-radius: 4px; transition: width .6s ease; }
.sc-bar-wt    { font-size: 12px; font-weight: 700; color: var(--ink-3); width: 32px; text-align: right; }

/* ── FACTOR CARD BODY ────────────────────────────────── */
.factor-body { flex: 1; }

/* ── PROCESS PANEL ───────────────────────────────────── */
.process-panel {
  background: var(--bg-white);
  border: 1.5px solid var(--line);
  border-radius: var(--r-lg);
  padding: 28px;
  box-shadow: var(--sh-sm);
}
.pp-header {
  display: flex;
  gap: 14px;
  align-items: center;
  margin-bottom: 20px;
}
.pp-h-icon {
  width: 42px; height: 42px;
  background: var(--blue-lt);
  color: var(--blue);
  border-radius: var(--r);
  display: grid; place-items: center;
  flex-shrink: 0;
}
.pp-h-icon svg { width: 20px; height: 20px; }
.pp-h-title { font-size: 15px; font-weight: 700; color: var(--ink); }
.pp-list { display: flex; flex-direction: column; gap: 14px; }
.pp-li { display: flex; gap: 12px; align-items: flex-start; }
.pp-li-check {
  width: 22px; height: 22px;
  background: var(--green-lt);
  color: #15803D;
  border-radius: 50%;
  display: grid; place-items: center;
  flex-shrink: 0;
  margin-top: 1px;
}
.pp-li-check svg { width: 12px; height: 12px; stroke-width: 2.5; }
.pp-li p { font-size: 13.5px; line-height: 1.66; color: var(--ink-2); }
.pp-body-text { font-size: 13.5px; line-height: 1.68; color: var(--ink-2); }

/* ── CHANGELOG ───────────────────────────────────────── */
.changelog-sec { padding: 88px 0; background: var(--bg-navy); }
.changelog-sec .eyebrow { color: var(--blue); }
.changelog-sec .section-title { color: #fff; }
.changelog-sec .section-body { color: rgba(255,255,255,.55); }
.changelog-sec .meth-sec-header { border-bottom: 1px solid rgba(255,255,255,.08); padding-bottom: 40px; margin-bottom: 40px; }

.changelog-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.cl-item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 28px;
  padding: 28px 0;
  border-bottom: 1px solid rgba(255,255,255,.07);
  align-items: start;
}

.cl-version {
  font-size: 13px;
  font-weight: 700;
  color: var(--blue);
  background: rgba(57,172,231,.12);
  border: 1px solid rgba(57,172,231,.25);
  border-radius: var(--r);
  padding: 6px 12px;
  text-align: center;
  white-space: nowrap;
  margin-top: 2px;
}

.cl-date { font-size: 11.5px; font-weight: 600; color: rgba(255,255,255,.35); text-transform: uppercase; letter-spacing: .08em; margin-bottom: 6px; }
.cl-title { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.cl-desc { font-size: 13.5px; line-height: 1.68; color: rgba(255,255,255,.5); margin-bottom: 12px; }

.cl-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.cl-tag {
  font-size: 11px; font-weight: 600;
  color: rgba(255,255,255,.4);
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 3px;
  padding: 3px 8px;
}
.cl-tag-major { color: var(--blue); background: rgba(57,172,231,.12); border-color: rgba(57,172,231,.25); }
.cl-tag-minor { color: #4ADE80; background: rgba(74,222,128,.1); border-color: rgba(74,222,128,.2); }

/* ── RESPONSIVE ──────────────────────────────────────── */
@media (max-width: 1024px) {
  .meth-sec-header { grid-template-columns: 1fr; gap: 16px; }
  .sc-bar-label { width: 180px; }
}

@media (max-width: 768px) {
  .sc-bar-label { width: 130px; font-size: 12px; }
  .cl-item { grid-template-columns: 60px 1fr; gap: 16px; }
  .changelog-sec { padding: 56px 0; }
}

@media (max-width: 640px) {
  .process-sec > .container > div[style] { grid-template-columns: 1fr !important; }
  .sc-bar-label { width: 100px; font-size: 11px; }
}