/*
   ITC ENERGY™ — Shared Design System
   Visual: Off-White / Slate / Teal / Copper — Light, Polished, Institutional
   Standard: WCAG 2.2 AA
═══════════════════════════════════════════════════════════════ */

/* RESET */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* TOKENS */
:root {
  /* Backgrounds — light */
  --bg:          #F8FAFC;   /* off-white base */
  --bg-alt:      #F1F5F9;   /* slate-50 */
  --bg-mid:      #E8EDF4;   /* slate-100 tinted */
  --bg-raised:   #FFFFFF;   /* pure white cards */
  --bg-dark:     #1E293B;   /* slate-800 — accent sections */
  --bg-darkest:  #0F172A;   /* slate-900 — footer */

  /* Slate text */
  --slate-50:    #F8FAFC;
  --slate-100:   #F1F5F9;
  --slate-200:   #E2E8F0;
  --slate-300:   #CBD5E1;
  --slate-400:   #94A3B8;
  --slate-500:   #64748B;
  --slate-600:   #475569;
  --slate-700:   #334155;
  --slate-800:   #1E293B;
  --slate-900:   #0F172A;

  /* Teal */
  --teal:        #0D9488;
  --teal-lt:     #14B8A6;
  --teal-dk:     #0F766E;
  --teal-dim:    rgba(13,148,136,0.10);
  --teal-dim-md: rgba(13,148,136,0.18);

  /* Copper */
  --copper:      #B45309;
  --copper-lt:   #D97706;
  --copper-dk:   #92400E;
  --copper-dim:  rgba(180,83,9,0.10);

  /* Borders */
  --border:      #E2E8F0;   /* slate-200 */
  --border-md:   #CBD5E1;   /* slate-300 */
  --border-dk:   #94A3B8;   /* slate-400 */

  /* Typography */
  --font-head: 'Inter Tight', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  /* Layout */
  --max:   1120px;
  --pad:   80px;
  --pad-v: 112px;
}

/* REDUCED MOTION */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* BASE */
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--slate-800);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* SKIP LINK */
.skip-link {
  position: absolute; top: -100%; left: 16px; z-index: 9999;
  padding: 12px 20px; background: var(--teal); color: #fff;
  font-family: var(--font-mono); font-size: 11px; font-weight: 500;
  letter-spacing: 0.12em; text-transform: uppercase;
  text-decoration: none; border-radius: 2px; transition: top 0.2s;
}
.skip-link:focus { top: 16px; }

/* FOCUS */
:focus-visible {
  outline: 3px solid var(--teal);
  outline-offset: 3px;
  border-radius: 2px;
}
:focus:not(:focus-visible) { outline: none; }

/* ─── NAVIGATION ─────────────────────────────────────────── */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 900;
}
.site-nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px var(--pad);
  background: rgba(248,250,252,0.94);
  backdrop-filter: blur(24px) saturate(160%);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  border-bottom: 1px solid var(--border);
  transition: padding 0.35s ease, box-shadow 0.35s ease;
}
.site-nav.scrolled {
  padding-top: 14px; padding-bottom: 14px;
  box-shadow: 0 1px 16px rgba(15,23,42,0.08);
}

.nav-logo {
  display: flex; align-items: center;
  text-decoration: none; transition: opacity 0.25s; flex-shrink: 0;
}
.nav-logo:hover { opacity: 0.80; }

/* ── Logo image — transparent PNG, no background ── */
.nav-logo-img {
  height: 52px; width: auto; display: block;
  object-fit: contain; object-position: left center;
  flex-shrink: 0;
  /* New flat logo: 114×104 native → 57×52 display */
}

/* Legacy SVG cube — kept for fallback */
.nav-cube { width: 26px; height: 26px; flex-shrink: 0; }
.nav-wordmark {
  font-family: var(--font-head); font-size: 9px; font-weight: 800;
  letter-spacing: 0.42em; text-transform: uppercase;
  color: var(--slate-800); white-space: nowrap;
}

.nav-list {
  display: flex; gap: 40px; list-style: none;
  position: absolute; left: 50%; transform: translateX(-50%);
}
.nav-list a {
  font-family: var(--font-body); font-size: 9px; font-weight: 500;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--slate-500); text-decoration: none;
  padding: 4px 2px; transition: color 0.25s;
}
.nav-list a:hover,
.nav-list a[aria-current="page"] { color: var(--slate-900); }

.nav-fund {
  font-family: var(--font-body); font-size: 7.5px; font-weight: 600;
  letter-spacing: 0.26em; text-transform: uppercase;
  text-decoration: none; color: #fff;
  padding: 10px 22px;
  background: var(--copper);
  border: 1px solid var(--copper);
  white-space: nowrap; flex-shrink: 0;
  transition: background 0.25s;
  min-height: 44px; display: inline-flex; align-items: center;
}
.nav-fund:hover { background: var(--copper-lt); border-color: var(--copper-lt); }

.nav-toggle {
  display: none; background: none; border: none; cursor: pointer;
  padding: 8px; color: var(--slate-600);
  min-width: 44px; min-height: 44px;
  align-items: center; justify-content: center;
}

/* ─── BUTTONS ─────────────────────────────────────────────── */
.btn {
  font-family: var(--font-body); font-size: 8px; font-weight: 600;
  letter-spacing: 0.26em; text-transform: uppercase;
  text-decoration: none; padding: 13px 32px;
  background: transparent; cursor: pointer; border: none;
  transition: border-color 0.25s, color 0.25s, background 0.25s;
  white-space: nowrap; display: inline-flex; align-items: center;
  min-height: 44px;
}
.btn-ghost {
  border: 1px solid var(--border-md);
  color: var(--slate-700);
}
.btn-ghost:hover {
  border-color: var(--copper);
  color: var(--copper);
  background: var(--copper-dim);
}
.btn-teal {
  border: 1px solid var(--teal);
  color: #fff; background: var(--teal);
}
.btn-teal:hover { background: var(--teal-dk); border-color: var(--teal-dk); }
.btn-outline-teal {
  border: 1px solid var(--teal);
  color: var(--teal-dk);
}
.btn-outline-teal:hover { background: var(--teal-dim-md); }
.btn-copper {
  border: 1px solid var(--copper);
  color: #fff; background: var(--copper);
}
.btn-copper:hover { background: var(--copper-lt); border-color: var(--copper-lt); }

/* ─── SECTION LAYOUT ──────────────────────────────────────── */
.sec {
  padding: var(--pad-v) 0;
  border-top: 1px solid var(--border);
}
.sec-inner {
  max-width: var(--max); margin: 0 auto; padding: 0 var(--pad);
}

/* ─── TYPOGRAPHY UTILITIES ────────────────────────────────── */
.eyebrow {
  font-family: var(--font-mono); font-size: 8px; font-weight: 500;
  letter-spacing: 0.32em; text-transform: uppercase;
  color: var(--teal-dk); margin-bottom: 18px; display: block;
}
.eyebrow-copper {
  font-family: var(--font-mono); font-size: 8px; font-weight: 500;
  letter-spacing: 0.32em; text-transform: uppercase;
  color: var(--copper); margin-bottom: 18px; display: block;
}
.sec-h {
  font-family: var(--font-head);
  font-size: clamp(24px, 3vw, 44px);
  font-weight: 700; letter-spacing: -0.03em;
  color: var(--slate-900); margin-bottom: 20px; line-height: 1.10;
}
.sec-h-sm {
  font-family: var(--font-head);
  font-size: clamp(20px, 2.4vw, 34px);
  font-weight: 700; letter-spacing: -0.03em;
  color: var(--slate-900); margin-bottom: 16px; line-height: 1.12;
}
.teal-rule {
  width: 24px; height: 2px;
  background: var(--teal); margin-bottom: 24px;
}
.copper-rule {
  width: 24px; height: 2px;
  background: var(--copper); margin-bottom: 24px;
}
.sec-body {
  font-family: var(--font-body); font-size: clamp(13px, 1.1vw, 15px);
  font-weight: 400; letter-spacing: 0.01em;
  color: var(--slate-600); line-height: 1.80;
}
.mono-label {
  font-family: var(--font-mono); font-size: 7.5px; font-weight: 400;
  letter-spacing: 0.26em; text-transform: uppercase; color: var(--slate-500);
}

/* ─── PAGE HERO (inner pages) ─────────────────────────────── */
.page-hero {
  padding: 160px var(--pad) 80px;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}
.page-hero-inner {
  max-width: var(--max); margin: 0 auto;
}
.page-hero-h1 {
  font-family: var(--font-head); font-size: clamp(28px, 4vw, 56px);
  font-weight: 700; letter-spacing: -0.03em;
  color: var(--slate-900); margin-bottom: 20px; line-height: 1.08;
}
.page-hero-sub {
  font-family: var(--font-body); font-size: clamp(13px, 1.2vw, 16px);
  font-weight: 400; letter-spacing: 0.01em;
  color: var(--slate-600); line-height: 1.75; max-width: 560px;
}

/* ─── BREADCRUMB ──────────────────────────────────────────── */
.breadcrumb {
  display: flex; gap: 8px; align-items: center;
  list-style: none; margin-bottom: 32px;
}
.breadcrumb li {
  font-family: var(--font-mono); font-size: 7.5px; font-weight: 400;
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--slate-400);
}
.breadcrumb li a {
  color: var(--slate-400); text-decoration: none; transition: color 0.25s;
}
.breadcrumb li a:hover { color: var(--slate-700); }
.breadcrumb li + li::before { content: "/"; margin-right: 8px; }

/* ─── GRID UTILITIES ──────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr); }
.col-border-right { border-right: 1px solid var(--border); }
.col-border-top { border-top: 2px solid var(--border-md); }

/* ─── COLUMN BLOCKS ───────────────────────────────────────── */
.col-block {
  padding: 44px 40px 44px 0;
}
.col-block:not(:first-child) { padding-left: 40px; }
.col-block:last-child { padding-right: 0; }
.col-block-label {
  font-family: var(--font-head); font-size: 9px; font-weight: 700;
  letter-spacing: 0.32em; text-transform: uppercase;
  color: var(--slate-800); margin-bottom: 14px;
}
.col-block-desc {
  font-family: var(--font-body); font-size: 13px; font-weight: 400;
  letter-spacing: 0.01em; color: var(--slate-600); line-height: 1.78;
}

/* ─── DISCLOSURE STRIP ────────────────────────────────────── */
.disclosure-strip {
  padding: 28px 0;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
}
.disclosure-strip-inner {
  max-width: var(--max); margin: 0 auto; padding: 0 var(--pad);
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 40px; flex-wrap: wrap;
}
.disclosure-strip-text {
  font-family: var(--font-mono); font-size: 8px; font-weight: 300;
  letter-spacing: 0.04em; color: var(--slate-500);
  line-height: 1.70; flex: 1; min-width: 260px;
}
.disclosure-strip-link {
  font-family: var(--font-mono); font-size: 7.5px; font-weight: 400;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--slate-500); text-decoration: none; white-space: nowrap;
  border-bottom: 1px solid var(--slate-300); padding-bottom: 2px;
  transition: color 0.25s, border-color 0.25s;
}
.disclosure-strip-link:hover { color: var(--teal-dk); border-color: var(--teal-dk); }

/* ─── FOOTER ──────────────────────────────────────────────── */
.site-footer {
  padding: 56px var(--pad) 40px;
  background: var(--bg-darkest);
  border-top: 1px solid rgba(255,255,255,0.08);
}
.footer-inner {
  max-width: var(--max); margin: 0 auto;
  display: grid; grid-template-columns: 1fr auto auto; gap: 80px;
  align-items: start;
}
.footer-brand-name {
  font-family: var(--font-head); font-size: 9px; font-weight: 800;
  letter-spacing: 0.42em; text-transform: uppercase;
  color: rgba(241,245,249,0.55); margin-bottom: 6px;
}
.footer-brand-tag {
  font-family: var(--font-mono); font-size: 7.5px; font-weight: 300;
  letter-spacing: 0.22em; color: rgba(241,245,249,0.22);
}
.footer-nav-label {
  font-family: var(--font-mono); font-size: 7px; font-weight: 500;
  letter-spacing: 0.28em; text-transform: uppercase;
  color: rgba(241,245,249,0.28); margin-bottom: 16px;
}
.footer-nav-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-nav-list a {
  font-family: var(--font-mono); font-size: 8px; font-weight: 300;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: rgba(241,245,249,0.38); text-decoration: none; transition: color 0.25s;
}
.footer-nav-list a:hover { color: rgba(241,245,249,0.70); }
.footer-bottom {
  max-width: var(--max); margin: 40px auto 0;
  padding-top: 24px; border-top: 1px solid rgba(255,255,255,0.07);
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px;
}
.footer-copy {
  font-family: var(--font-mono); font-size: 7.5px; font-weight: 300;
  letter-spacing: 0.12em; color: rgba(241,245,249,0.18);
}

/* ─── PORTAL OVERLAY ──────────────────────────────────────── */
.portal-overlay {
  position: fixed; inset: 0; z-index: 9999;
  background: rgba(248,250,252,0.97);
  transform: translateY(100%);
  transition: transform 0.60s cubic-bezier(0.76,0,0.24,1);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 14px;
}
.portal-overlay.active { transform: translateY(0%); }
.portal-text {
  font-family: var(--font-mono); font-size: 9.5px; font-weight: 500;
  letter-spacing: 0.38em; text-transform: uppercase;
  color: var(--copper);
}
.portal-sub {
  font-family: var(--font-mono); font-size: 7.5px; font-weight: 300;
  letter-spacing: 0.22em; color: var(--slate-400);
}
.portal-cancel {
  position: absolute; top: 28px; right: 40px;
  font-family: var(--font-mono); font-size: 7.5px; letter-spacing: 0.28em;
  color: var(--slate-400); cursor: pointer; text-transform: uppercase;
  background: none; border: none; transition: color 0.25s;
  min-height: 44px; min-width: 44px; padding: 8px 12px;
}
.portal-cancel:hover { color: var(--slate-700); }

/* ─── FORM SYSTEM ─────────────────────────────────────────── */
.form-field {
  display: flex; flex-direction: column; gap: 6px;
  padding: 18px 0; border-bottom: 1px solid var(--border);
}
.form-field:first-child { border-top: 1px solid var(--border); }
.form-field label {
  font-family: var(--font-mono); font-size: 7.5px; font-weight: 500;
  letter-spacing: 0.26em; text-transform: uppercase; color: var(--slate-500);
}
.form-field input,
.form-field select,
.form-field textarea {
  background: transparent; border: none;
  font-family: var(--font-body); font-size: 13px; font-weight: 400;
  letter-spacing: 0.01em; color: var(--slate-800);
  padding: 4px 0; width: 100%; min-height: 44px;
  -webkit-appearance: none; resize: vertical;
}
.form-field input::placeholder,
.form-field textarea::placeholder { color: var(--slate-400); font-size: 12px; }
.form-field select option { background: var(--bg-raised); color: var(--slate-800); }
.form-helper {
  font-family: var(--font-mono); font-size: 7px; font-weight: 300;
  letter-spacing: 0.12em; color: var(--slate-400);
}
.form-field:focus-within { border-bottom-color: var(--teal); }
.form-field:focus-within label { color: var(--teal-dk); }
.form-field input:focus-visible,
.form-field select:focus-visible,
.form-field textarea:focus-visible {
  outline: 2px solid var(--teal); outline-offset: 2px; border-radius: 2px;
}
.form-field.has-error label { color: #DC2626; }
.form-field.has-error { border-bottom-color: #DC2626; }
.form-error-msg {
  font-family: var(--font-mono); font-size: 7px;
  letter-spacing: 0.10em; color: #DC2626; display: none;
}
.form-field.has-error .form-error-msg { display: block; }
.form-success {
  display: none; font-family: var(--font-mono); font-size: 9px;
  letter-spacing: 0.12em; color: var(--teal-dk);
  padding: 20px 0; line-height: 1.65;
}
.form-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0;
}
.form-req { color: var(--teal); margin-left: 2px; }
.contact-form { display: flex; flex-direction: column; }
@media (max-width: 600px) {
  .form-row { grid-template-columns: 1fr; }
}

/* ─── RESPONSIVE ──────────────────────────────────────────── */
@media (max-width: 1024px) { :root { --pad: 40px; } }

@media (max-width: 860px) {
  :root { --pad: 24px; --pad-v: 80px; }
  .site-nav { padding: 16px 24px; }
  .nav-list {
    display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(248,250,252,0.98); backdrop-filter: blur(20px);
    flex-direction: column; align-items: center; justify-content: center;
    gap: 0; z-index: 800; transform: none;
  }
  .nav-list.open { display: flex; }
  .nav-list.open li { border-bottom: 1px solid var(--border); width: 100%; text-align: center; }
  .nav-list.open a { font-size: 14px; padding: 22px; display: block; color: var(--slate-700); }
  .nav-toggle { display: inline-flex; }
  .nav-fund { display: none; }
  .grid-2 { grid-template-columns: 1fr; gap: 48px; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .col-block { padding: 32px 0; border-right: none; border-bottom: 1px solid var(--border); }
  .col-block:last-child { border-bottom: none; }
  .col-block:not(:first-child) { padding-left: 0; }
  .footer-inner { grid-template-columns: 1fr; gap: 40px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .disclosure-strip-inner { flex-direction: column; gap: 14px; }
  .page-hero { padding: 120px var(--pad) 60px; }
}

@media (max-width: 600px) {
  .grid-4 { grid-template-columns: 1fr; }
}

@media (max-width: 400px) {
  :root { --pad: 16px; }
}