:root {
  --cemc-navy: #102c75;
  --cemc-navy-dark: #081d52;
  --cemc-red: #e4202a;
  --cemc-blue: #2f8dd0;
  --cemc-light: #f4f7fb;
  --cemc-muted: #697386;
}

body {
  font-family: 'Open Sans', Arial, sans-serif;
  color: #172033;
  background: #fff;
}

h1, h2, h3, h4, h5, h6, .navbar-brand, .nav-link, .btn {
  font-family: 'Montserrat', Arial, sans-serif;
}

.navbar {
  background: rgba(255,255,255,.96);
  box-shadow: 0 8px 24px rgba(16,44,117,.08);
}

.navbar-brand img {
  width: 185px;
  height: auto;
}

.nav-link {
  color: var(--cemc-navy) !important;
  font-weight: 700;
  letter-spacing: .03em;
  text-transform: uppercase;
  font-size: .86rem;
  margin-left: .75rem;
}

.nav-link.active {
  color: var(--cemc-red) !important;
}

.btn-cemc {
  background: var(--cemc-red);
  color: #fff;
  border: 0;
  border-radius: 999px;
  padding: .85rem 1.4rem;
  font-weight: 800;
  box-shadow: 0 12px 28px rgba(228,32,42,.24);
}

.btn-cemc:hover { background: #c81520; color: #fff; }

.btn-outline-cemc {
  border: 2px solid #fff;
  color: #fff;
  border-radius: 999px;
  padding: .75rem 1.35rem;
  font-weight: 800;
}

.btn-outline-cemc:hover { background: #fff; color: var(--cemc-navy); }

/* ===== Hero slideshow ===== */
.hero-slide {
  min-height: 690px;
  position: relative;
  display: flex;
  align-items: center;
  background-image: url('../img/sunset-pipeline.jpg');
  background-size: cover;
  background-position: center;
}

.hero-slide:before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(8,29,82,.92), rgba(16,44,117,.72), rgba(16,44,117,.22));
}

.hero-content {
  position: relative;
  z-index: 2;
  color: #fff;
  max-width: 850px;
  padding-top: 80px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-family: 'Montserrat', Arial, sans-serif;
  font-size: .8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .14em;
  color: #d8edff;
  margin-bottom: 1rem;
}

.eyebrow:before {
  content: '';
  width: 42px;
  height: 4px;
  background: var(--cemc-red);
  border-radius: 999px;
}

.hero-content h1 {
  font-size: clamp(1.35rem, 4vw, 4rem);
  line-height: .98;
  font-weight: 800;
  letter-spacing: -.04em;
  margin-bottom: 1.25rem;
}

.hero-content p {
  font-size: clamp(1.05rem, 1.6vw, 1.35rem);
  line-height: 1.65;
  max-width: 740px;
  color: rgba(255,255,255,.9);
}

/* ===== Inner page banner ===== */
.page-banner {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 360px;
  margin-top: 0;
  background-image: url('../img/sunset-pipeline.jpg');
  background-size: cover;
  background-position: center;
}

.page-banner:before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(8,29,82,.92), rgba(16,44,117,.7), rgba(16,44,117,.4));
}

.page-banner .container { position: relative; z-index: 2; padding-top: 70px; }
.page-banner h1 { color: #fff; font-weight: 800; letter-spacing: -.03em; }
.page-banner p { color: rgba(255,255,255,.9); max-width: 680px; }

.section-padding { padding: 90px 0; }
.bg-light-cemc { background: var(--cemc-light); }

.section-kicker {
  color: var(--cemc-red);
  font-family: 'Montserrat', Arial, sans-serif;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .13em;
  font-size: .8rem;
  margin-bottom: .75rem;
}

.section-title {
  color: var(--cemc-navy);
  font-weight: 800;
  letter-spacing: -.03em;
}

.lead-muted { color: var(--cemc-muted); line-height: 1.8; }

.service-card {
  height: 100%;
  background: #fff;
  border: 1px solid rgba(16,44,117,.1);
  border-radius: 24px;
  padding: 30px;
  box-shadow: 0 18px 45px rgba(16,44,117,.08);
  transition: transform .2s ease, box-shadow .2s ease;
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 28px 60px rgba(16,44,117,.14);
}

.service-icon {
  width: 56px;
  height: 56px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--cemc-blue), var(--cemc-navy));
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 1.2rem;
  margin-bottom: 22px;
}

.service-card h3 { color: var(--cemc-navy); font-size: 1.15rem; font-weight: 800; }
.service-card p { color: var(--cemc-muted); line-height: 1.7; margin-bottom: 0; }

.image-panel {
  min-height: 470px;
  border-radius: 34px;
  background: linear-gradient(135deg, rgba(16,44,117,.96), rgba(47,141,208,.85)),
              repeating-linear-gradient(45deg, transparent 0 18px, rgba(255,255,255,.15) 19px 21px);
  box-shadow: 0 28px 70px rgba(16,44,117,.22);
  position: relative;
  overflow: hidden;
}

.image-panel--photo {
  background: linear-gradient(180deg, rgba(8,29,82,.12) 0%, rgba(8,29,82,.20) 55%, rgba(8,29,82,.72) 100%),
              url('../img/gas-expertise.jpg');
  background-size: cover;
  background-position: center;
}

.image-panel:after {
  content: 'NATURAL GAS MARKETING  •  TRANSPORTATION  •  RISK MANAGEMENT';
  position: absolute;
  left: 32px;
  bottom: 34px;
  right: 32px;
  color: #fff;
  font-family: 'Montserrat', Arial, sans-serif;
  font-weight: 800;
  letter-spacing: .12em;
  line-height: 1.6;
}

.stat-box {
  background: #fff;
  border-left: 5px solid var(--cemc-red);
  border-radius: 18px;
  padding: 24px;
  box-shadow: 0 18px 45px rgba(16,44,117,.08);
}

.stat-box strong { color: var(--cemc-navy); font-size: 2rem; font-family: 'Montserrat'; }

.industry-pill {
  border: 1px solid rgba(16,44,117,.12);
  border-radius: 999px;
  padding: 14px 20px;
  background: #fff;
  color: var(--cemc-navy);
  font-family: 'Montserrat';
  font-weight: 800;
  text-align: center;
}

.team-card {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 28px;
  padding: 30px;
  color: #fff;
  height: 100%;
}

.avatar-placeholder {
  width: 116px;
  height: 116px;
  border-radius: 50%;
  background: linear-gradient(135deg, #fff, #d8edff);
  color: var(--cemc-navy);
  display: grid;
  place-items: center;
  font-family: 'Montserrat';
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 22px;
}

.logo-tile {
  height: 104px;
  border: 1px solid rgba(16,44,117,.1);
  border-radius: 22px;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 20px;
  color: var(--cemc-navy);
  font-family: 'Montserrat';
  font-weight: 800;
  letter-spacing: .02em;
  box-shadow: 0 16px 38px rgba(16,44,117,.07);
}

.logo-tile span { color: var(--cemc-blue); }

.testimonial {
  background: #fff;
  border-radius: 26px;
  padding: 32px;
  border-top: 5px solid var(--cemc-blue);
  box-shadow: 0 18px 45px rgba(16,44,117,.08);
  height: 100%;
}

.quote-mark { color: var(--cemc-red); font-size: 3rem; line-height: .6; font-family: Georgia, serif; }

.cta-band {
  background: linear-gradient(135deg, var(--cemc-red), #b80f18);
  color: #fff;
  border-radius: 34px;
  padding: 54px;
  box-shadow: 0 25px 60px rgba(228,32,42,.25);
}

.contact-card {
  background: #fff;
  border: 1px solid rgba(16,44,117,.1);
  border-radius: 24px;
  padding: 32px;
  box-shadow: 0 18px 45px rgba(16,44,117,.08);
  height: 100%;
}

.contact-card h3 { color: var(--cemc-navy); font-weight: 800; font-size: 1.15rem; }

.form-control {
  border-radius: 14px;
  padding: .8rem 1rem;
  border: 1px solid rgba(16,44,117,.2);
}

footer {
  background: var(--cemc-navy-dark);
  color: rgba(255,255,255,.78);
  padding: 60px 0 28px;
}

footer a { color: rgba(255,255,255,.82); text-decoration: none; }
footer a:hover { color: #fff; }

@media (max-width: 767px) {
  .navbar-brand img { width: 145px; }
  .hero-slide { min-height: 620px; }
  .page-banner { min-height: 280px; }
  .section-padding { padding: 65px 0; }
  .cta-band { padding: 34px; }
  .image-panel { min-height: 340px; }
}

/* ============================================================
   Premium motion & micro-interactions
   ============================================================ */
:root {
  --ease-out-quint: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --dur-fast: 320ms;
  --dur-mid: 520ms;
  --dur-slow: 700ms;
}

html { scroll-behavior: smooth; }

/* --- Navbar: glass + condense on scroll --- */
.navbar {
  transition: background var(--dur-fast) var(--ease-smooth),
              box-shadow var(--dur-fast) var(--ease-smooth),
              padding-top var(--dur-fast) var(--ease-smooth),
              padding-bottom var(--dur-fast) var(--ease-smooth);
  -webkit-backdrop-filter: saturate(160%) blur(6px);
  backdrop-filter: saturate(160%) blur(6px);
}

.navbar.is-scrolled {
  background: rgba(255,255,255,.82);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  backdrop-filter: saturate(180%) blur(14px);
  box-shadow: 0 10px 30px rgba(16,44,117,.10);
  padding-top: .35rem;
  padding-bottom: .35rem;
}

.navbar-brand img { transition: transform var(--dur-fast) var(--ease-smooth); }
.navbar-brand:hover img { transform: scale(1.03); }

/* --- Nav links: animated underline --- */
.nav-link {
  position: relative;
  transition: color var(--dur-fast) var(--ease-smooth);
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 2px;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--cemc-red);
  transition: width var(--dur-fast) var(--ease-out-quint);
}

.nav-link:hover::after,
.nav-link.active::after { width: 62%; }

/* --- Buttons: lift + deepen shadow --- */
.btn {
  transition: transform var(--dur-fast) var(--ease-out-quint),
              box-shadow var(--dur-fast) var(--ease-out-quint),
              background-color var(--dur-fast) var(--ease-smooth),
              color var(--dur-fast) var(--ease-smooth);
}

.btn-cemc:hover { transform: translateY(-2px); box-shadow: 0 18px 38px rgba(228,32,42,.34); }
.btn-cemc:active { transform: translateY(0); box-shadow: 0 8px 20px rgba(228,32,42,.26); }

.btn-outline-cemc:hover { transform: translateY(-2px); box-shadow: 0 16px 34px rgba(0,0,0,.18); }
.btn-outline-cemc:active { transform: translateY(0); }

/* --- Cards & tiles: refined hover easing --- */
.service-card {
  transition: transform var(--dur-fast) var(--ease-out-quint),
              box-shadow var(--dur-fast) var(--ease-out-quint),
              border-color var(--dur-fast) var(--ease-smooth);
}

.service-card:hover { border-color: rgba(47,141,208,.35); }

.service-icon { transition: transform var(--dur-fast) var(--ease-out-quint); }
.service-card:hover .service-icon { transform: translateY(-2px) rotate(-3deg); }

.industry-pill {
  transition: transform var(--dur-fast) var(--ease-out-quint),
              box-shadow var(--dur-fast) var(--ease-out-quint),
              border-color var(--dur-fast) var(--ease-smooth),
              color var(--dur-fast) var(--ease-smooth);
}

.industry-pill:hover {
  transform: translateY(-3px);
  border-color: rgba(47,141,208,.4);
  box-shadow: 0 14px 30px rgba(16,44,117,.12);
  color: var(--cemc-red);
}

.logo-tile {
  transition: transform var(--dur-fast) var(--ease-out-quint),
              box-shadow var(--dur-fast) var(--ease-out-quint);
}

.logo-tile:hover { transform: translateY(-4px); box-shadow: 0 22px 45px rgba(16,44,117,.14); }

.stat-box {
  transition: transform var(--dur-fast) var(--ease-out-quint),
              box-shadow var(--dur-fast) var(--ease-out-quint);
}

.stat-box:hover { transform: translateY(-3px); box-shadow: 0 24px 50px rgba(16,44,117,.14); }

.testimonial {
  transition: transform var(--dur-fast) var(--ease-out-quint),
              box-shadow var(--dur-fast) var(--ease-out-quint);
}

.testimonial:hover { transform: translateY(-4px); box-shadow: 0 28px 56px rgba(16,44,117,.14); }

.team-card {
  transition: transform var(--dur-fast) var(--ease-out-quint),
              background var(--dur-fast) var(--ease-smooth),
              border-color var(--dur-fast) var(--ease-smooth);
}

.team-card:hover {
  transform: translateY(-4px);
  background: rgba(255,255,255,.13);
  border-color: rgba(255,255,255,.3);
}

.contact-card {
  transition: transform var(--dur-fast) var(--ease-out-quint),
              box-shadow var(--dur-fast) var(--ease-out-quint);
}

/* --- Image panel: subtle drifting sheen --- */
.image-panel::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,.16) 50%, transparent 70%);
  transform: translateX(-60%);
  animation: panelSheen 6s var(--ease-smooth) infinite;
}

@keyframes panelSheen {
  0%, 100% { transform: translateX(-60%); opacity: 0; }
  45% { opacity: 1; }
  60% { transform: translateX(60%); opacity: 0; }
}

/* --- Form fields --- */
.form-control {
  transition: border-color var(--dur-fast) var(--ease-smooth),
              box-shadow var(--dur-fast) var(--ease-smooth);
}

.form-control:focus {
  border-color: var(--cemc-blue);
  box-shadow: 0 0 0 .2rem rgba(47,141,208,.18);
}

/* --- Footer links --- */
footer a { transition: color var(--dur-fast) var(--ease-smooth); }

/* --- Hero carousel: content entrance + premium controls --- */
@keyframes contentRise {
  from { opacity: 0; transform: translateY(22px); }
  to   { opacity: 1; transform: none; }
}

.carousel-item.active .hero-content > * {
  opacity: 0;
  animation: contentRise var(--dur-slow) var(--ease-out-quint) forwards;
}

.carousel-item.active .hero-content > *:nth-child(1) { animation-delay: .05s; }
.carousel-item.active .hero-content > *:nth-child(2) { animation-delay: .16s; }
.carousel-item.active .hero-content > *:nth-child(3) { animation-delay: .28s; }
.carousel-item.active .hero-content > *:nth-child(4) { animation-delay: .40s; }

.carousel-indicators [data-bs-target] {
  width: 30px;
  height: 4px;
  border-radius: 4px;
  transition: opacity var(--dur-fast) var(--ease-smooth),
              background-color var(--dur-fast) var(--ease-smooth);
}

.carousel-control-prev,
.carousel-control-next {
  width: 6%;
  opacity: 0;
  transition: opacity var(--dur-fast) var(--ease-smooth);
}

#heroCarousel:hover .carousel-control-prev,
#heroCarousel:hover .carousel-control-next { opacity: .85; }

/* --- Page banner entrance --- */
.page-banner .container > * {
  opacity: 0;
  animation: contentRise var(--dur-slow) var(--ease-out-quint) forwards;
}

.page-banner .container > *:nth-child(1) { animation-delay: .08s; }
.page-banner .container > *:nth-child(2) { animation-delay: .2s; }
.page-banner .container > *:nth-child(3) { animation-delay: .32s; }

/* --- Scroll reveal (added by JS) --- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity var(--dur-slow) var(--ease-out-quint),
              transform var(--dur-slow) var(--ease-out-quint);
  will-change: opacity, transform;
}

.reveal.is-visible { opacity: 1; transform: none; }

/* --- Respect reduced-motion preferences --- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .reveal { opacity: 1 !important; transform: none !important; }
  .image-panel::before { display: none; }
}

/* ============================================================
   Custom animated hamburger
   ============================================================ */
.navbar-toggler {
  border: 0;
  padding: .4rem;
  width: 46px;
  height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  transition: background-color var(--dur-fast) var(--ease-smooth);
}

.navbar-toggler:focus { box-shadow: none; outline: none; }
.navbar-toggler:hover { background: var(--cemc-light); }

.hamburger {
  position: relative;
  display: block;
  width: 26px;
  height: 16px;
}

.hamburger span {
  position: absolute;
  left: 0;
  height: 2px;
  width: 100%;
  border-radius: 2px;
  background: var(--cemc-navy);
  transition: transform var(--dur-fast) var(--ease-out-quint),
              opacity var(--dur-fast) var(--ease-smooth),
              top var(--dur-fast) var(--ease-out-quint),
              width var(--dur-fast) var(--ease-out-quint);
}

.hamburger span:nth-child(1) { top: 0; }
.hamburger span:nth-child(2) { top: 7px; width: 80%; }
.hamburger span:nth-child(3) { top: 14px; }

.navbar-toggler[aria-expanded="true"] .hamburger span:nth-child(1) { top: 7px; transform: rotate(45deg); }
.navbar-toggler[aria-expanded="true"] .hamburger span:nth-child(2) { opacity: 0; width: 100%; }
.navbar-toggler[aria-expanded="true"] .hamburger span:nth-child(3) { top: 7px; transform: rotate(-45deg); }

/* ============================================================
   Professional mobile navigation panel (< lg)
   ============================================================ */
@media (max-width: 991.98px) {
  .navbar { padding-top: .5rem; padding-bottom: .5rem; }

  .navbar-collapse {
    margin-top: .75rem;
    padding: .5rem;
    background: #fff;
    border: 1px solid rgba(16,44,117,.08);
    border-radius: 18px;
    box-shadow: 0 24px 55px rgba(16,44,117,.18);
  }

  .navbar-nav { gap: .15rem; }
  .navbar-nav .nav-item { width: 100%; }

  .nav-link {
    margin-left: 0 !important;
    padding: .9rem 1rem !important;
    border-radius: 12px;
    display: flex;
    align-items: center;
    transition: background-color var(--dur-fast) var(--ease-smooth),
                color var(--dur-fast) var(--ease-smooth),
                padding-left var(--dur-fast) var(--ease-out-quint);
  }

  .nav-link::after { display: none; }
  .nav-link:hover { background: var(--cemc-light); padding-left: 1.25rem !important; }

  .nav-link.active {
    background: rgba(228,32,42,.08);
    color: var(--cemc-red) !important;
    box-shadow: inset 3px 0 0 var(--cemc-red);
  }

  .navbar-nav .nav-item:not(:last-child) {
    border-bottom: 1px solid rgba(16,44,117,.06);
  }

  .navbar-nav .btn-cemc {
    width: 100%;
    text-align: center;
    justify-content: center;
    margin: .5rem 0 .25rem !important;
  }

  /* Staggered entrance for menu items while opening */
  .navbar-collapse.show .nav-item,
  .navbar-collapse.collapsing .nav-item {
    animation: navItemIn var(--dur-mid) var(--ease-out-quint) backwards;
  }

  .navbar-collapse.show .nav-item:nth-child(1),
  .navbar-collapse.collapsing .nav-item:nth-child(1) { animation-delay: .04s; }
  .navbar-collapse.show .nav-item:nth-child(2),
  .navbar-collapse.collapsing .nav-item:nth-child(2) { animation-delay: .10s; }
  .navbar-collapse.show .nav-item:nth-child(3),
  .navbar-collapse.collapsing .nav-item:nth-child(3) { animation-delay: .16s; }
  .navbar-collapse.show .nav-item:nth-child(4),
  .navbar-collapse.collapsing .nav-item:nth-child(4) { animation-delay: .22s; }
  .navbar-collapse.show .nav-item:nth-child(5),
  .navbar-collapse.collapsing .nav-item:nth-child(5) { animation-delay: .28s; }
}

@keyframes navItemIn {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: none; }
}

/* ============================================================
   Responsive fine-tuning
   ============================================================ */
html, body { overflow-x: clip; }

/* Prevent wide-gutter rows from overflowing the viewport on small screens.
   Caps only the horizontal gutter (keeps vertical spacing for stacked cols). */
@media (max-width: 991.98px) {
  .row.g-5 { --bs-gutter-x: 1.5rem; }
}

@media (max-width: 991.98px) {
  .section-padding { padding: 72px 0; }
  .cta-band { padding: 42px; }
}

@media (max-width: 767px) {
  .hero-content { padding-top: 64px; }
  .image-panel:after { left: 22px; right: 22px; bottom: 24px; font-size: .82rem; }
}

@media (max-width: 575.98px) {
  .navbar-brand img { width: 150px; }
  .hero-slide { min-height: 560px; }
  .page-banner { min-height: 260px; }
  .page-banner h1,
  .page-banner .display-4 { font-size: 2.05rem; }
  .display-5 { font-size: 1.85rem; }
  .display-6 { font-size: 1.55rem; }
  .section-padding { padding: 54px 0; }
  .service-card,
  .contact-card,
  .testimonial,
  .team-card { padding: 24px; }
  .cta-band { padding: 26px; border-radius: 26px; }
  .stat-box strong { font-size: 1.7rem; }
}

/* ============================================================
   Back-to-top button
   ============================================================ */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 1030;
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 50%;
  color: #fff;
  background: var(--cemc-navy);
  box-shadow: 0 12px 28px rgba(16,44,117,.32);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: opacity var(--dur-fast) var(--ease-smooth),
              transform var(--dur-fast) var(--ease-out-quint),
              background-color var(--dur-fast) var(--ease-smooth),
              box-shadow var(--dur-fast) var(--ease-smooth);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--cemc-red);
  box-shadow: 0 16px 34px rgba(228,32,42,.34);
  transform: translateY(-3px);
}

.back-to-top:active { transform: translateY(0); }
.back-to-top:focus-visible { outline: 3px solid rgba(47,141,208,.55); outline-offset: 3px; }

.back-to-top svg { transition: transform var(--dur-fast) var(--ease-out-quint); }
.back-to-top:hover svg { transform: translateY(-2px); }

@media (max-width: 575.98px) {
  .back-to-top { right: 16px; bottom: 16px; width: 44px; height: 44px; }
}