/* ENGSL — Oil & Gas art + page interaction styles */

/* SVG Art container */
.og-art-wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.og-art {
  width: 100%; height: auto; max-width: 100%;
  filter: drop-shadow(0 8px 24px rgba(40,87,158,.12));
}
.og-art-bg {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  opacity: .35;
}
.og-art-bg .og-art {
  width: 100%; height: 100%;
}

/* Decorative section banner */
.og-banner {
  position: relative; padding: 4rem 0; overflow: hidden;
  background: linear-gradient(135deg, var(--navy-50), var(--bg-pale));
  border-top: 1px solid var(--navy-100);
  border-bottom: 1px solid var(--navy-100);
}
.og-banner::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(40,87,158,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(40,87,158,.06) 1px, transparent 1px);
  background-size: 30px 30px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 30%, transparent 80%);
  pointer-events: none;
}
.og-banner-inner {
  display: grid; grid-template-columns: 1fr; gap: 2rem;
  align-items: center; position: relative; z-index: 1;
}
@media (min-width: 900px) {
  .og-banner-inner { grid-template-columns: 1fr 1fr; }
}

/* Tabs */
.tabs-bar {
  display: flex; gap: .25rem; flex-wrap: wrap;
  background: var(--bg-white);
  border: 1px solid var(--silver-200);
  border-radius: 10px;
  padding: .35rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-sm);
}
.tab-btn {
  flex: 1; min-width: max-content;
  padding: .75rem 1.25rem;
  font-family: var(--font-body); font-size: .8rem; font-weight: 600;
  letter-spacing: .04em; text-transform: uppercase;
  color: var(--text-muted); background: transparent;
  border: none; border-radius: 7px; cursor: pointer;
  transition: all .25s var(--ease-out);
  position: relative; overflow: hidden;
}
.tab-btn:hover { color: var(--navy-700); background: var(--navy-50); }
.tab-btn.active {
  color: #fff;
  background: linear-gradient(135deg, var(--navy-700), var(--navy-800));
  box-shadow: 0 4px 12px rgba(40,87,158,.3);
}
.tab-panel { display: none; animation: tabIn .4s var(--ease-out); }
.tab-panel.active { display: block; }
@keyframes tabIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* Accordion */
.acc-list { display: flex; flex-direction: column; gap: .75rem; }
.acc-item {
  background: var(--bg-white); border: 1px solid var(--silver-200);
  border-radius: 10px; overflow: hidden;
  transition: all .3s var(--ease-out);
}
.acc-item:hover { border-color: var(--navy-200); box-shadow: var(--shadow-sm); }
.acc-item.open { border-color: var(--navy-300); box-shadow: var(--shadow-md); }
.acc-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.1rem 1.5rem; cursor: pointer;
  font-size: .9rem; font-weight: 600; color: var(--text-dark);
  user-select: none;
  transition: background .25s;
}
.acc-head:hover { background: var(--navy-50); }
.acc-icon {
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  background: var(--navy-50); border-radius: 50%;
  transition: all .35s var(--ease-out);
  color: var(--navy-700);
  flex-shrink: 0;
}
.acc-item.open .acc-icon {
  background: linear-gradient(135deg, var(--navy-700), var(--navy-800));
  color: #fff; transform: rotate(45deg);
}
.acc-body {
  max-height: 0; overflow: hidden;
  transition: max-height .45s var(--ease-out), padding .35s var(--ease-out);
  padding: 0 1.5rem;
}
.acc-item.open .acc-body { max-height: 800px; padding: 0 1.5rem 1.4rem; }
.acc-body p { color: var(--text-muted); line-height: 1.7; font-size: .9rem; }

/* Hover ripple effect for cards */
[data-ripple] { position: relative; overflow: hidden; }
[data-ripple]::after {
  content: ''; position: absolute;
  width: 200px; height: 200px; border-radius: 50%;
  left: var(--rx, 50%); top: var(--ry, 50%);
  transform: translate(-50%, -50%) scale(0);
  background: radial-gradient(circle, rgba(102,153,214,.18), transparent 70%);
  transition: transform .5s var(--ease-out), opacity .5s;
  opacity: 0;
  pointer-events: none;
}
[data-ripple]:hover::after { transform: translate(-50%, -50%) scale(2.5); opacity: 1; }

/* Hot-spot info dots (interactive markers) */
.hot-grid {
  position: relative; aspect-ratio: 5 / 3;
  background: linear-gradient(135deg, var(--navy-50), var(--bg-pale));
  border: 1px solid var(--navy-100);
  border-radius: 16px; overflow: hidden;
}
.hot-grid::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(40,87,158,.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(40,87,158,.1) 1px, transparent 1px);
  background-size: 40px 40px;
}
.hot-pin {
  position: absolute;
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--navy-700); border: 3px solid #fff;
  box-shadow: 0 0 0 4px rgba(40,87,158,.2);
  cursor: pointer;
  transition: transform .3s var(--ease-out);
  z-index: 2;
}
.hot-pin::before {
  content: ''; position: absolute; inset: -8px; border-radius: 50%;
  border: 2px solid var(--navy-500);
  animation: hotPulse 2.5s ease-out infinite;
}
@keyframes hotPulse {
  0% { transform: scale(.6); opacity: 1; }
  100% { transform: scale(1.8); opacity: 0; }
}
.hot-pin:hover { transform: scale(1.3); }
.hot-tip {
  position: absolute; left: 50%; bottom: calc(100% + 12px);
  transform: translateX(-50%) translateY(8px);
  background: var(--navy-900); color: #fff;
  padding: .6rem .9rem; border-radius: 8px;
  font-size: .75rem; font-weight: 500;
  white-space: nowrap; pointer-events: none;
  opacity: 0; transition: all .25s var(--ease-out);
  box-shadow: 0 8px 24px rgba(10,23,48,.25);
  z-index: 3;
}
.hot-tip::after {
  content: ''; position: absolute; left: 50%; top: 100%;
  transform: translateX(-50%);
  border: 6px solid transparent; border-top-color: var(--navy-900);
}
.hot-pin:hover .hot-tip { opacity: 1; transform: translateX(-50%) translateY(0); }

/* Process flow steps */
.flow-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  position: relative;
}
@media (min-width: 768px) {
  .flow-steps { grid-template-columns: repeat(4, 1fr); gap: 0; }
  .flow-steps::before {
    content: ''; position: absolute;
    left: 8%; right: 8%; top: 28px; height: 2px;
    background: linear-gradient(90deg, var(--navy-300), var(--navy-500), var(--navy-300));
    z-index: 0;
  }
}
.flow-step {
  text-align: center; position: relative; z-index: 1;
  padding: 0 1rem;
}
.flow-num {
  width: 56px; height: 56px;
  margin: 0 auto 1rem;
  border-radius: 50%;
  background: var(--bg-white);
  border: 2px solid var(--navy-300);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-size: 1.5rem; font-weight: 700;
  color: var(--navy-700);
  transition: all .35s var(--ease-out);
  position: relative;
}
.flow-step:hover .flow-num {
  background: linear-gradient(135deg, var(--navy-700), var(--navy-800));
  color: #fff; border-color: var(--navy-700);
  transform: scale(1.1);
  box-shadow: 0 8px 24px rgba(40,87,158,.3);
}
.flow-title { font-size: .8rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--text-dark); margin-bottom: .4rem; }
.flow-desc { font-size: .82rem; color: var(--text-muted); line-height: 1.55; }

/* Marquee for trading commodities */
.marquee {
  background: var(--navy-900); color: #fff;
  padding: 1.2rem 0; overflow: hidden; position: relative;
  border-top: 1px solid var(--navy-700);
  border-bottom: 1px solid var(--navy-700);
}
.marquee::before, .marquee::after {
  content: ''; position: absolute; top: 0; bottom: 0; width: 100px;
  z-index: 2; pointer-events: none;
}
.marquee::before { left: 0; background: linear-gradient(90deg, var(--navy-900), transparent); }
.marquee::after { right: 0; background: linear-gradient(-90deg, var(--navy-900), transparent); }
.marquee-track {
  display: flex; gap: 3rem; white-space: nowrap;
  animation: marqueeScroll 40s linear infinite;
  width: max-content;
}
.marquee-item {
  display: inline-flex; align-items: center; gap: .6rem;
  font-family: var(--font-mono); font-size: .85rem;
  letter-spacing: .08em; color: rgba(255,255,255,.85);
}
.marquee-item .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--navy-400);
}
.marquee-item .num { color: var(--navy-300); font-weight: 600; }
@keyframes marqueeScroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* Image card with hover overlay */
.img-card {
  position: relative; aspect-ratio: 4/3;
  border-radius: 12px; overflow: hidden;
  background: linear-gradient(135deg, var(--navy-100), var(--navy-50));
  border: 1px solid var(--silver-200);
  transition: all .4s var(--ease-out);
}
.img-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.img-card .og-art-wrap { padding: 2rem; height: 100%; }
.img-card-cap {
  position: absolute; bottom: 0; left: 0; right: 0;
  padding: 1rem 1.25rem;
  background: linear-gradient(180deg, transparent, rgba(10,23,48,.9));
  color: #fff;
  transform: translateY(20px); opacity: 0;
  transition: all .3s var(--ease-out);
}
.img-card:hover .img-card-cap { transform: translateY(0); opacity: 1; }
.img-card-cap-title { font-size: .85rem; font-weight: 700; letter-spacing: .04em; }
.img-card-cap-sub { font-size: .7rem; color: rgba(255,255,255,.7); margin-top: .15rem; }

/* Stat ticker (counter animation) */
.ticker {
  display: inline-block;
  font-family: var(--font-display); font-weight: 700;
  background: linear-gradient(180deg, var(--navy-700), var(--navy-900));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}