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

:root {
  --entsoe-blue: #00b2ff;
  --entsoe-yellow: #fece00;
  --entsoe-teal: #12ac96;
  --navy: #003050;
  --navy-dark: #001f36;
  --navy-mid: #00406e;
  --white: #ffffff;
  --off-white: #f5f8fb;
  --light-gray: #e8eef4;
  --text: #1a2b3c;
  --muted: #5a7080;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family:
    "Lato",
    -system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    Helvetica,
    Arial,
    "Apple Color Emoji",
    "Segoe UI Emoji",
    "Segoe UI Symbol",
    sans-serif;
  background: var(--off-white);
  color: var(--text);
  overflow-x: hidden;
}

/* ─── BANNER ─── */
.site-banner img {
  max-height: 50vh;
  width: 100%;
  margin-top: 60px; // Navigation fixed
}

/* ─── NAV ─── */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 3rem;
  height: 68px;
  background: var(--navy-dark);
  border-bottom: 3px solid var(--entsoe-blue);
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 1.1rem;
}
.nav-divider {
  width: 1px;
  height: 28px;
  background: rgba(255, 255, 255, 0.18);
}
.nav-event {
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.77rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  line-height: 1.4;
}
.nav-event strong {
  display: block;
  color: var(--white);
  font-weight: 700;
  font-size: 0.82rem;
}
.nav-links {
  display: flex;
  gap: 0;
  list-style: none;
}
.nav-links a {
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  font-size: 0.77rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  padding: 0 1rem;
  height: 68px;
  display: flex;
  align-items: center;
  border-bottom: 3px solid transparent;
  margin-bottom: -3px;
  transition:
    color 0.2s,
    border-color 0.2s;
}
.nav-links a:hover {
  color: var(--white);
  border-color: var(--entsoe-blue);
}

/* ─── HERO ─── */
.hero {
  position: relative;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(
      ellipse 70% 80% at 65% 35%,
      rgba(0, 178, 255, 0.18) 0%,
      transparent 55%
    ),
    radial-gradient(
      ellipse 50% 50% at 5% 90%,
      rgba(18, 172, 150, 0.12) 0%,
      transparent 50%
    ),
    linear-gradient(150deg, #001628 0%, #003050 55%, #001628 100%);
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 178, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 178, 255, 0.04) 1px, transparent 1px);
  background-size: 70px 70px;
}
.hero-topbar {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(
    90deg,
    var(--entsoe-blue) 0%,
    var(--entsoe-teal) 50%,
    var(--entsoe-yellow) 100%
  );
}
/* large watermark logo in background */
.hero-watermark {
  position: absolute;
  right: -2%;
  top: 50%;
  transform: translateY(-50%);
  width: 55vw;
  max-width: 700px;
  opacity: 0.055;
  pointer-events: none;
}
.hero-content {
  max-width: 780px;
  margin: 0 auto;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  background: rgba(0, 178, 255, 0.1);
  border: 1px solid rgba(0, 178, 255, 0.25);
  color: var(--entsoe-blue);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 0.45rem 1rem;
  margin-bottom: 1.8rem;
}
.hero h1 {
  font-size: clamp(2.6rem, 4.5vw, 4.2rem);
  font-weight: 900;
  line-height: 1.08;
  color: var(--white);
  margin-bottom: 0.4rem;
}
.hero h1 .accent-blue {
  color: var(--entsoe-blue);
}
.hero h1 .accent-yellow {
  color: var(--entsoe-yellow);
}
.hero-meta {
  display: flex;
  gap: 1.8rem;
  margin: 1.8rem 0 2.2rem;
  flex-wrap: wrap;
}
.meta-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.88rem;
}
.meta-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--entsoe-teal);
  flex-shrink: 0;
}
.hero-desc {
  font-size: 1.05rem;
  font-weight: 300;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.62);
  max-width: 580px;
  margin-bottom: 2.5rem;
}
.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  background: var(--entsoe-blue);
  color: var(--navy-dark);
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.95rem 2.2rem;
  transition:
    background 0.2s,
    transform 0.15s;
}
.hero-cta:hover {
  background: #33c5ff;
  transform: translateY(-2px);
}
.hero-badge {
  position: absolute;
  right: 5%;
  bottom: 8%;
  z-index: 3;
  background: rgba(0, 48, 80, 0.75);
  border: 1px solid rgba(0, 178, 255, 0.3);
  backdrop-filter: blur(8px);
  padding: 1.4rem 2rem;
  text-align: center;
  min-width: 140px;
}
.hero-badge .bd-num {
  font-size: 3rem;
  font-weight: 900;
  color: var(--entsoe-yellow);
  line-height: 1;
}
.hero-badge .bd-month {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--entsoe-blue);
  margin: 0.25rem 0;
}
.hero-badge .bd-city {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.35);
}

/* ─── COLOUR BAND ─── */
.colour-band {
  height: 5px;
  background: linear-gradient(
    90deg,
    var(--entsoe-blue) 0%,
    var(--entsoe-teal) 50%,
    var(--entsoe-yellow) 100%
  );
}

/* ─── SECTION COMMON ─── */
section {
  padding: 5.5rem 4rem;
}
.section-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--entsoe-teal);
  margin-bottom: 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.7rem;
}
.section-label::before {
  content: "";
  display: inline-block;
  width: 20px;
  height: 2px;
  background: var(--entsoe-teal);
  flex-shrink: 0;
}
.section-title {
  font-size: clamp(1.7rem, 2.5vw, 2.5rem);
  font-weight: 900;
  line-height: 1.15;
  color: var(--navy);
  margin-bottom: 1.5rem;
}

/* ─── ABOUT ─── */
.about {
  background: var(--white);
}
.about-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}
.about-body p {
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.85;
  color: #3a4f5e;
  margin-bottom: 1.1rem;
}
.about-highlights {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.highlight-card {
  background: var(--off-white);
  border-left: 4px solid var(--entsoe-blue);
  padding: 1.3rem 1.5rem;
}
.highlight-card:nth-child(2) {
  border-color: var(--entsoe-teal);
}
.highlight-card:nth-child(3) {
  border-color: var(--entsoe-yellow);
}
.highlight-card:nth-child(4) {
  border-color: var(--entsoe-blue);
}
.highlight-card h4 {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.highlight-card p {
  font-size: 0.86rem;
  line-height: 1.65;
  color: var(--muted);
}

/* ─── AGENDA ─── */
.agenda {
  background: var(--navy-dark);
}
.agenda .section-title {
  color: var(--white);
}
.agenda .section-label {
  color: var(--entsoe-blue);
}
.agenda .section-label::before {
  background: var(--entsoe-blue);
}
.agenda-inner {
  max-width: 860px;
  margin: 0 auto;
}
.agenda-item {
  display: grid;
  grid-template-columns: 155px 1fr;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  padding: 1.5rem 0;
  align-items: start;
}
.agenda-item:last-child {
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}
.agenda-time {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--entsoe-blue);
  letter-spacing: 0.04em;
  padding-top: 0.15rem;
  font-variant-numeric: tabular-nums;
}
.agenda-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.2rem;
}
.agenda-sub {
  font-size: 0.83rem;
  color: rgba(255, 255, 255, 0.38);
  font-weight: 300;
}
.agenda-item.panel .agenda-title {
  color: var(--entsoe-yellow);
}
.agenda-item.panel .agenda-time {
  color: var(--entsoe-yellow);
}
.agenda-item.break .agenda-title {
  color: rgba(255, 255, 255, 0.3);
  font-weight: 400;
  font-style: italic;
}
.agenda-item.break .agenda-time {
  color: rgba(255, 255, 255, 0.22);
}
.agenda-item.reception .agenda-title {
  color: var(--entsoe-teal);
}
.agenda-item.reception .agenda-time {
  color: var(--entsoe-teal);
}
.agenda-note {
  margin-top: 2.5rem;
  border-left: 3px solid var(--entsoe-teal);
  padding: 1rem 1.4rem;
  background: rgba(18, 172, 150, 0.07);
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.9rem;
  line-height: 1.7;
  font-style: italic;
}

/* ─── PANELS ─── */
.panels {
  background: var(--off-white);
}
.panels-inner {
  max-width: 1120px;
  margin: 0 auto;
}
.panels-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
}
.panel-card {
  background: var(--white);
  padding: 2.2rem 1.8rem;
  position: relative;
  overflow: hidden;
  border-top: 4px solid var(--entsoe-blue);
  box-shadow: 0 2px 16px rgba(0, 48, 80, 0.07);
  transition:
    transform 0.22s,
    box-shadow 0.22s;
}
.panel-card:nth-child(2) {
  border-color: var(--entsoe-teal);
}
.panel-card:nth-child(3) {
  border-color: var(--entsoe-yellow);
}
.panel-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 32px rgba(0, 48, 80, 0.12);
}
.panel-num {
  font-size: 4rem;
  font-weight: 900;
  line-height: 1;
  color: rgba(0, 178, 255, 0.07);
  position: absolute;
  top: 0.6rem;
  right: 1.2rem;
}
.panel-card:nth-child(2) .panel-num {
  color: rgba(18, 172, 150, 0.08);
}
.panel-card:nth-child(3) .panel-num {
  color: rgba(254, 206, 0, 0.1);
}
.panel-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.3;
  margin-bottom: 0.9rem;
  max-width: 220px;
}
.panel-card p {
  font-size: 0.87rem;
  line-height: 1.75;
  color: var(--muted);
  font-weight: 400;
}

/* ─── KEYNOTE ─── */
.keynote {
  background: var(--navy);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.keynote::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 178, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 178, 255, 0.04) 1px, transparent 1px);
  background-size: 50px 50px;
}
.keynote .section-label {
  justify-content: center;
  color: var(--entsoe-yellow);
}
.keynote .section-label::before {
  background: var(--entsoe-yellow);
}
.keynote .section-title {
  color: var(--white);
}
.keynote-inner {
  position: relative;
  z-index: 1;
  max-width: 700px;
  margin: 0 auto;
}
.keynote-subtext {
  font-size: 1rem;
  font-weight: 300;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 3rem;
}
.speaker-placeholder {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}
.speaker-slot {
  width: 88px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
}
.speaker-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 1.5px dashed rgba(0, 178, 255, 0.3);
  background: rgba(0, 178, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
}
.speaker-avatar svg {
  opacity: 0.3;
}
.speaker-label {
  font-size: 0.67rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.3);
  text-align: center;
  font-weight: 700;
}
.keynote-teaser {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--entsoe-yellow);
  border: 1px solid rgba(254, 206, 0, 0.35);
  padding: 0.75rem 2rem;
}

/* ─── CONTACT ─── */
.contact {
  background: var(--light-gray);
  text-align: center;
}
.contact-inner {
  max-width: 640px;
  margin: 0 auto;
}
.contact .section-label {
  justify-content: center;
}
.contact p {
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.8;
  color: #3a4f5e;
  margin-bottom: 1.2rem;
}
.contact-email {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--navy-dark);
  color: var(--entsoe-blue);
  text-decoration: none;
  padding: 0.9rem 2.2rem;
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  border-bottom: 2px solid var(--entsoe-blue);
  transition: background 0.2s;
}
.contact-email:hover {
  background: var(--navy-mid);
}
.contact-link {
  display: inline-block;
  margin-top: 1.8rem;
  color: var(--entsoe-teal);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 700;
  border-bottom: 1px solid rgba(18, 172, 150, 0.35);
  padding-bottom: 0.1rem;
  transition:
    color 0.2s,
    border-color 0.2s;
}
.contact-link:hover {
  color: var(--navy);
  border-color: var(--navy);
}

/* ─── FOOTER ─── */
footer {
  background: var(--navy-dark);
  padding: 2rem 4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.74rem;
  color: rgba(255, 255, 255, 0.2);
}

/* ─── ANIMATIONS ─── */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(22px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.hero-eyebrow {
  animation: fadeUp 0.6s ease both;
}
.hero h1 {
  animation: fadeUp 0.6s 0.1s ease both;
}
.hero-meta {
  animation: fadeUp 0.6s 0.2s ease both;
}
.hero-desc {
  animation: fadeUp 0.6s 0.3s ease both;
}
.hero-cta {
  animation: fadeUp 0.6s 0.4s ease both;
}
.hero-badge {
  animation: fadeUp 0.6s 0.5s ease both;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 0.55s ease,
    transform 0.55s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ─── RESPONSIVE ─── */
@media (max-width: 920px) {
  nav {
    padding: 0 1.5rem;
  }
  .nav-links {
    display: none;
  }
  section {
    padding: 3.5rem 1.5rem;
  }
  .about-inner {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .panels-grid {
    grid-template-columns: 1fr;
  }
  .agenda-item {
    grid-template-columns: 115px 1fr;
  }
  footer {
    flex-direction: column;
    gap: 0.7rem;
    text-align: center;
    padding: 1.5rem;
  }
  .hero-badge {
    display: none;
  }
}