/* ── DARK MODE (site-wide) ── */
html[data-theme="dark"] {
  filter: invert(1) hue-rotate(180deg);
}

/* Toggle icon visibility */
#theme-icon-sun  { display: none; }
#theme-icon-moon { display: block; }
html[data-theme="dark"] #theme-icon-sun  { display: block; }
html[data-theme="dark"] #theme-icon-moon { display: none; }

/* Nav toggle button */
.nav-theme-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: none;
  background: transparent;
  border-radius: 6px;
  cursor: pointer;
  color: var(--muted);
  transition: color .14s, background .14s;
  margin-left: 2px;
}
.nav-theme-btn:hover { color: var(--ink); background: var(--soft); }

/* ── Hamburger button ── */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  border-radius: 6px;
  color: #6b8c78;
  transition: background .14s, color .14s;
  margin-left: 2px;
  flex-shrink: 0;
}
.nav-hamburger:hover { background: #f0f7f3; color: #0f5132; }
.nav-hamburger span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: currentColor;
  border-radius: 2px;
  transition: transform .22s ease, opacity .22s ease;
  transform-origin: center;
}
/* Animate to × when active */
.nav-hamburger.active span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-hamburger.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-hamburger.active span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ── Drawer backdrop ── */
.nav-drawer-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(14, 32, 24, 0.35);
  z-index: 1500;
  opacity: 0;
  transition: opacity .25s ease;
}
.nav-drawer-backdrop.open {
  display: block;
  opacity: 1;
}

/* ── Drawer panel ── */
.nav-drawer {
  position: fixed;
  top: 0;
  right: 0;
  height: 100%;
  width: 260px;
  max-width: 82vw;
  background: #ffffff;
  z-index: 1600;
  transform: translateX(100%);
  transition: transform .28s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  padding-top: 0;
  box-shadow: -6px 0 32px rgba(14, 32, 24, 0.14);
}
.nav-drawer.open { transform: translateX(0); }

.nav-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid rgba(26, 122, 80, 0.1);
}
.nav-drawer-brand {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.1rem;
  color: #0f5132;
  letter-spacing: -0.01em;
  text-decoration: none;
}
.nav-drawer-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  background: none;
  border: none;
  cursor: pointer;
  color: #6b8c78;
  border-radius: 6px;
  transition: color .14s, background .14s;
}
.nav-drawer-close:hover { color: #0e2018; background: #f0f7f3; }

.nav-drawer-links {
  list-style: none;
  padding: 12px 12px;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.nav-drawer-links a {
  display: block;
  padding: 12px 14px;
  font-size: 0.95rem;
  font-weight: 500;
  color: #2d4a38;
  text-decoration: none;
  border-radius: 8px;
  transition: background .14s, color .14s;
}
.nav-drawer-links a:hover { background: #f0f7f3; color: #0f5132; }
.nav-drawer-links a[aria-current="page"] {
  color: #0f5132;
  font-weight: 600;
  background: #f0f7f3;
}

/* ── Show hamburger, hide nav-links on mobile ── */
@media (max-width: 640px) {
  .nav-links { display: none !important; }
  .nav-hamburger { display: flex; }
}

/* ── Methodology modal ── */
#meth-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  align-items: center;
  justify-content: center;
}
#meth-modal.open { display: flex; }

.meth-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
}

.meth-box {
  position: relative;
  background: #fff;
  border-radius: 12px;
  padding: 28px 24px;
  max-width: 360px;
  width: calc(100% - 40px);
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.18);
}

.meth-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: #0e2018;
}

.meth-desc {
  font-size: 0.85rem;
  color: #6b8c78;
  margin: 0;
}

.meth-opt {
  display: block;
  padding: 13px 16px;
  border-radius: 8px;
  background: #f0f7f3;
  color: #1a7a50;
  font-size: 0.88rem;
  font-weight: 500;
  text-decoration: none;
  transition: background .14s, color .14s;
}
.meth-opt:hover { background: #d1ece0; color: #0f5132; }

.meth-close {
  align-self: center;
  background: none;
  border: none;
  font-size: 0.8rem;
  color: #6b8c78;
  cursor: pointer;
  padding: 4px 14px;
  border-radius: 6px;
  transition: color .14s;
}
.meth-close:hover { color: #0e2018; }

/* ── Scroll offset for sticky nav ── */
.card-head h2[id] {
  scroll-margin-top: 80px; /* 56px nav + 24px breathing room */
}

@media (max-width: 959px) {
  .card-head h2[id] {
    scroll-margin-top: 112px; /* 56px nav + ~40px mobile pill strip + 16px buffer */
  }
}

/* ── School page left nav + 3-column layout ── */

/* 3-column layout when left nav is present */
@media (min-width: 960px) {
  .layout--has-leftnav {
    grid-template-columns: 168px minmax(0, 1fr) 316px;
  }
  .layout--has-leftnav .main { grid-column: 2; }
  .layout--has-leftnav .side { grid-column: 3; }
}

/* Left nav — desktop only */
.page-left-nav {
  display: none;
}

@media (min-width: 960px) {
  .page-left-nav {
    display: block;
    grid-column: 1;
    grid-row: 1 / 10;
    position: sticky;
    top: 76px;
    align-self: start;
  }

  .pln-label {
    font-size: .65rem;
    font-weight: 600;
    letter-spacing: .09em;
    text-transform: uppercase;
    color: var(--subtle, #94a3b8);
    padding: 0 0 10px 12px;
    margin-bottom: 2px;
  }

  .pln-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 1px;
  }

  .pln-link {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 8px 12px;
    border-radius: var(--r-sm, 6px);
    font-size: .8rem;
    font-weight: 500;
    color: var(--muted, #64748b);
    text-decoration: none;
    transition: color .15s, background .15s;
    line-height: 1.35;
  }

  .pln-link::before {
    content: '';
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--border, #e2e8f0);
    flex-shrink: 0;
    transition: background .15s, transform .15s;
  }

  .pln-link:hover {
    color: var(--ink-2, #1e2a3a);
    background: var(--bg-2, #f0f4f8);
  }

  .pln-link:hover::before {
    background: var(--subtle, #94a3b8);
  }

  .pln-link.active {
    color: var(--em-700, #047857);
    font-weight: 600;
  }

  .pln-link.active::before {
    background: var(--em-500, #10b981);
    transform: scale(1.4);
  }
}

/* Mobile: sticky horizontal pill strip */
.page-nav-mobile {
  display: none;
  position: sticky;
  top: 56px;
  z-index: 100;
  background: rgba(246, 248, 251, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border, #e2e8f0);
}

@media (max-width: 959px) {
  .page-nav-mobile { display: block; }
}

.page-nav-mobile-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 8px 20px;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.page-nav-mobile-inner::-webkit-scrollbar { display: none; }

.pnm-link {
  display: inline-block;
  padding: 5px 13px;
  border-radius: 100px;
  font-size: .78rem;
  font-weight: 500;
  white-space: nowrap;
  color: var(--muted, #64748b);
  background: var(--surface, #fff);
  border: 1px solid var(--border, #e2e8f0);
  text-decoration: none;
  transition: color .14s, background .14s, border-color .14s;
  flex-shrink: 0;
}

.pnm-link:hover {
  color: var(--ink, #0d1117);
  border-color: var(--em-300, #6ee7b7);
}

.pnm-link.active {
  color: var(--em-700, #047857);
  background: var(--em-50, #ecfdf5);
  border-color: var(--em-400, #34d399);
  font-weight: 600;
}

/* ── Admissions year toggle buttons ── */
.adm-year-tabs {
  display: flex;
  gap: 5px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.adm-year-btn {
  padding: 3px 11px;
  border-radius: 100px;
  border: 1px solid var(--border, #e2e8f0);
  background: transparent;
  color: var(--muted, #64748b);
  font-size: 0.73rem;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
  transition: background .14s, color .14s, border-color .14s;
  white-space: nowrap;
}

.adm-year-btn:hover {
  border-color: var(--em-300, #6ee7b7);
  color: var(--ink, #0d1117);
}

.adm-year-btn.active {
  background: var(--em-50, #ecfdf5);
  border-color: var(--em-400, #34d399);
  color: var(--em-700, #047857);
  font-weight: 600;
}

/* ── Score History card ── */
.adm-trends-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

@media (max-width: 560px) {
  .adm-trends-grid { grid-template-columns: 1fr; }
}

.adm-trend-lbl {
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted, #64748b);
  margin-bottom: 6px;
}

.adm-hist-note {
  font-size: 0.78rem;
  color: var(--muted, #64748b);
  margin: 0 0 14px;
}