/* ============================================
   USE — Concept 03: Future Energy
   Infrastructure Intelligence Design System
   ============================================ */

:root {
  --obsidian: #070B14;
  --night-panel: #101826;
  --signal-blue: #1F6FEB;
  --aqua: #3EE0C6;
  --cool-white: #E8EEF7;
  --slate: #8B9BB4;
  --amber: #E6A23C;
  --gradient-start: #2B3F8C;
  --gradient-end: #0E7490;
  --glass: rgba(16, 24, 38, 0.72);
  --glass-border: rgba(31, 111, 235, 0.22);
  --glow-blue: rgba(31, 111, 235, 0.35);
  --glow-aqua: rgba(62, 224, 198, 0.25);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 40px;
  --space-xl: 64px;
  --space-2xl: 96px;
  --section-pad: clamp(64px, 8vw, 112px);
  --font-display: 'Syne', sans-serif;
  --font-body: 'Manrope', sans-serif;
  --nav-height: 72px;
  --transition: 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-body);
  background: var(--obsidian);
  color: var(--cool-white);
  line-height: 1.65;
  font-size: 16px;
  overflow-x: hidden;
}

body.no-scroll { overflow: hidden; }

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul { list-style: none; }

::selection {
  background: rgba(31, 111, 235, 0.35);
  color: var(--cool-white);
}

.container {
  width: min(1200px, calc(100% - 48px));
  margin-inline: auto;
}

.container--wide {
  width: min(1400px, calc(100% - 48px));
  margin-inline: auto;
}

/* ---- Typography ---- */
.eyebrow {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--aqua);
  margin-bottom: var(--space-sm);
}

.display {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.display--xl { font-size: clamp(2.5rem, 5.5vw, 4.25rem); }
.display--lg { font-size: clamp(2rem, 4vw, 3rem); }
.display--md { font-size: clamp(1.5rem, 2.5vw, 2rem); }

.lead {
  font-size: clamp(1.05rem, 1.5vw, 1.2rem);
  color: var(--slate);
  max-width: 58ch;
}

.text-slate { color: var(--slate); }
.text-aqua { color: var(--aqua); }
.text-blue { color: var(--signal-blue); }

/* ---- Loader ---- */
.loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--obsidian);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

.loader.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader__logo {
  height: 36px;
  opacity: 0;
}

.loader__status {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--slate);
  font-weight: 500;
}

.loader__bar {
  width: 200px;
  height: 2px;
  background: rgba(139, 155, 180, 0.15);
  border-radius: 2px;
  overflow: hidden;
}

.loader__bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--signal-blue), var(--aqua));
  border-radius: 2px;
}

.loader__lines {
  font-family: monospace;
  font-size: 11px;
  color: rgba(139, 155, 180, 0.5);
  min-height: 1.4em;
}

/* ---- Page Transition ---- */
.page-transition {
  position: fixed;
  inset: 0;
  z-index: 9998;
  pointer-events: none;
  background: linear-gradient(
    105deg,
    transparent 40%,
    rgba(62, 224, 198, 0.06) 48%,
    rgba(31, 111, 235, 0.12) 50%,
    rgba(62, 224, 198, 0.06) 52%,
    transparent 60%
  );
  opacity: 0;
  will-change: transform, opacity;
}

/* ---- Navigation ---- */
.nav {
  position: fixed;
  top: var(--space-sm);
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  width: min(1100px, calc(100% - 32px));
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-md);
  background: var(--glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  transition: top var(--transition), box-shadow var(--transition);
}

.nav.is-scrolled {
  top: var(--space-xs);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(31, 111, 235, 0.08);
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nav__logo { height: 32px; }

.nav__brand-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.04em;
  display: none;
}

@media (min-width: 640px) {
  .nav__brand-text { display: block; }
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav__link {
  font-size: 14px;
  font-weight: 500;
  color: var(--slate);
  position: relative;
  padding: 4px 0;
  transition: color var(--transition);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--aqua);
  transform: translateX(-50%) scale(0);
  transition: transform var(--transition);
  box-shadow: 0 0 8px var(--glow-aqua);
}

.nav__link:hover,
.nav__link.is-active {
  color: var(--cool-white);
}

.nav__link.is-active::after {
  transform: translateX(-50%) scale(1);
}

.nav__cta {
  margin-left: var(--space-sm);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--cool-white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav__toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.is-open span:nth-child(2) { opacity: 0; }
.nav__toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 768px) {
  .nav__toggle { display: flex; }

  .nav__links {
    position: fixed;
    top: calc(var(--nav-height) + 24px);
    left: 50%;
    transform: translateX(-50%) translateY(-12px);
    width: min(1100px, calc(100% - 32px));
    flex-direction: column;
    padding: var(--space-md);
    background: var(--glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  }

  .nav__links.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
  }

  .nav__cta { margin-left: 0; width: 100%; }
  .nav__cta .btn { width: 100%; justify-content: center; }
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 12px 24px;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--signal-blue);
  color: var(--cool-white);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12), 0 4px 20px rgba(31, 111, 235, 0.3);
}

.btn--primary:hover {
  background: #2a7dff;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.15), 0 6px 28px rgba(31, 111, 235, 0.45);
  transform: translateY(-1px);
}

.btn--secondary {
  background: rgba(16, 24, 38, 0.6);
  color: var(--cool-white);
  border: 1px solid rgba(139, 155, 180, 0.25);
  backdrop-filter: blur(8px);
}

.btn--secondary:hover {
  border-color: var(--aqua);
  color: var(--aqua);
  box-shadow: 0 0 20px var(--glow-aqua);
}

.btn__edge {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  opacity: 0;
}

.btn:hover .btn__edge {
  animation: edge-travel 0.6s ease forwards;
}

@keyframes edge-travel {
  0% {
    opacity: 1;
    box-shadow: inset 0 0 0 1px var(--aqua), inset 0 -20px 20px -20px var(--glow-aqua);
  }
  100% {
    opacity: 0.4;
    box-shadow: inset 0 0 0 1px rgba(62, 224, 198, 0.3);
  }
}

.btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* ---- Hero ---- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--nav-height) + var(--space-xl));
  padding-bottom: var(--space-2xl);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 40%, rgba(43, 63, 140, 0.18) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 80% 70%, rgba(14, 116, 144, 0.12) 0%, transparent 50%),
    var(--obsidian);
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(31, 111, 235, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(31, 111, 235, 0.03) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black 20%, transparent 75%);
}

.hero__canvas-wrap {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero__canvas {
  width: 100%;
  max-width: 900px;
  height: auto;
  opacity: 0.85;
}

.hero__content {
  position: relative;
  z-index: 2;
  width: min(1200px, calc(100% - 48px));
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

@media (min-width: 900px) {
  .hero__content {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }
}

.hero__text {
  max-width: 560px;
}

.hero__headline {
  margin-bottom: var(--space-md);
}

.hero__headline .word {
  display: inline-block;
  opacity: 0;
  transform: translateY(24px);
}

.hero__sub {
  margin-bottom: var(--space-lg);
  opacity: 0;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  opacity: 0;
}

.hero__meta {
  display: flex;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(139, 155, 180, 0.12);
  opacity: 0;
}

.hero__meta-item {
  font-size: 12px;
  color: var(--slate);
}

.hero__meta-item strong {
  display: block;
  color: var(--cool-white);
  font-size: 14px;
  margin-bottom: 2px;
}

/* ---- Sections ---- */
.section {
  padding-block: var(--section-pad);
  position: relative;
}

.section--panel {
  background: var(--night-panel);
  border-block: 1px solid rgba(31, 111, 235, 0.08);
}

.section__header {
  margin-bottom: var(--space-xl);
}

.section__header--center {
  text-align: center;
}

.section__header--center .lead {
  margin-inline: auto;
}

/* ---- Thesis Band ---- */
.thesis {
  background: linear-gradient(135deg, rgba(43, 63, 140, 0.15) 0%, rgba(14, 116, 144, 0.08) 100%);
  border-block: 1px solid rgba(31, 111, 235, 0.12);
  padding-block: var(--space-xl);
}

.thesis__inner {
  display: grid;
  gap: var(--space-lg);
  align-items: center;
}

@media (min-width: 768px) {
  .thesis__inner {
    grid-template-columns: auto 1fr;
    gap: var(--space-2xl);
  }
}

.thesis__icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  background: rgba(31, 111, 235, 0.12);
  border: 1px solid rgba(31, 111, 235, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.thesis__icon svg {
  width: 32px;
  height: 32px;
  color: var(--aqua);
}

.thesis__quote {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 600;
  line-height: 1.35;
  color: var(--cool-white);
}

/* ---- Auth Nodes ---- */
.auth-nodes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-md);
}

.auth-node {
  padding: var(--space-md);
  background: rgba(16, 24, 38, 0.6);
  border: 1px solid rgba(139, 155, 180, 0.12);
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
  opacity: 1;
  transform: none;
}

.auth-node.is-confirmed {
  border-color: rgba(62, 224, 198, 0.35);
}

.auth-node__status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--slate);
  margin-bottom: var(--space-sm);
}

.auth-node__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--slate);
  transition: background var(--transition), box-shadow var(--transition);
}

.auth-node.is-confirmed .auth-node__dot {
  background: var(--aqua);
  box-shadow: 0 0 8px var(--glow-aqua);
}

.auth-node.is-confirmed .auth-node__status span:last-child {
  color: var(--aqua);
}

.auth-node__value {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.auth-node__label {
  font-size: 13px;
  color: var(--slate);
}

.auth-node__scan {
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(62, 224, 198, 0.08), transparent);
  pointer-events: none;
}

.auth-node.is-confirmed .auth-node__scan {
  animation: auth-scan 0.8s ease forwards;
}

@keyframes auth-scan {
  to { left: 100%; }
}

/* ---- Module Cards ---- */
.module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-md);
}

@media (min-width: 768px) {
  .module-grid--2x3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.module-card {
  padding: var(--space-md);
  background: rgba(7, 11, 20, 0.5);
  border: 1px solid rgba(31, 111, 235, 0.15);
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  opacity: 1;
  transform: none;
}

.module-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(31, 111, 235, 0.3), transparent 50%, rgba(62, 224, 198, 0.15));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}

.module-card:hover {
  border-color: rgba(31, 111, 235, 0.4);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3), 0 0 24px var(--glow-blue);
}

.module-card:hover::before {
  opacity: 1;
}

.module-card__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(31, 111, 235, 0.1);
  border: 1px solid rgba(31, 111, 235, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-sm);
  color: var(--signal-blue);
}

.module-card__icon svg {
  width: 22px;
  height: 22px;
}

.module-card__type {
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--aqua);
  margin-bottom: 6px;
}

.module-card__title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.module-card__desc {
  font-size: 14px;
  color: var(--slate);
  margin-bottom: var(--space-sm);
  line-height: 1.55;
}

.module-card__metric {
  font-size: 12px;
  color: var(--slate);
  padding-top: var(--space-sm);
  border-top: 1px solid rgba(139, 155, 180, 0.1);
}

.module-card__metric strong {
  color: var(--cool-white);
}

.module-card__link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  font-weight: 600;
  color: var(--signal-blue);
  margin-top: var(--space-sm);
  transition: color var(--transition), gap var(--transition);
}

.module-card:hover .module-card__link {
  color: var(--aqua);
  gap: 8px;
}

/* ---- Digital Twin ---- */
.twin {
  display: grid;
  gap: var(--space-xl);
  align-items: center;
}

@media (min-width: 900px) {
  .twin {
    grid-template-columns: 1fr 1fr;
  }
}

.twin__viz {
  position: relative;
  aspect-ratio: 1;
  max-width: 480px;
  margin-inline: auto;
}

.twin__pipe {
  position: absolute;
  inset: 15%;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.twin__layer {
  position: absolute;
  border-radius: 50%;
  border: 2px solid transparent;
  opacity: 0;
  transform: scale(0.85);
}

.twin__layer--1 {
  inset: 0;
  border-color: rgba(139, 155, 180, 0.3);
  background: rgba(139, 155, 180, 0.05);
}

.twin__layer--2 {
  inset: 12%;
  border-color: rgba(31, 111, 235, 0.4);
  background: rgba(31, 111, 235, 0.08);
}

.twin__layer--3 {
  inset: 24%;
  border-color: rgba(62, 224, 198, 0.5);
  background: rgba(62, 224, 198, 0.06);
}

.twin__layer--4 {
  inset: 36%;
  border-color: rgba(31, 111, 235, 0.6);
  background: rgba(31, 111, 235, 0.12);
}

.twin__core {
  position: absolute;
  inset: 44%;
  border-radius: 50%;
  background: radial-gradient(circle, var(--signal-blue) 0%, rgba(31, 111, 235, 0.3) 100%);
  box-shadow: 0 0 30px var(--glow-blue);
  opacity: 0;
}

.twin__crosshair {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.twin__crosshair line {
  stroke: rgba(62, 224, 198, 0.2);
  stroke-width: 1;
}

.twin__legend {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.twin__legend-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm);
  background: rgba(16, 24, 38, 0.5);
  border: 1px solid rgba(139, 155, 180, 0.1);
  border-radius: var(--radius-sm);
  opacity: 0;
  transform: translateX(-16px);
}

.twin__legend-item.is-active {
  border-color: rgba(62, 224, 198, 0.3);
  background: rgba(62, 224, 198, 0.05);
}

.twin__legend-swatch {
  width: 12px;
  height: 12px;
  border-radius: 2px;
  flex-shrink: 0;
}

.twin__legend-text strong {
  display: block;
  font-size: 14px;
  margin-bottom: 2px;
}

.twin__legend-text span {
  font-size: 12px;
  color: var(--slate);
}

/* ---- Sector Split ---- */
.sector-split {
  display: grid;
  gap: var(--space-md);
}

@media (min-width: 768px) {
  .sector-split {
    grid-template-columns: 1fr 1fr;
  }
}

.sector-panel {
  padding: var(--space-lg);
  background: rgba(16, 24, 38, 0.6);
  border: 1px solid rgba(139, 155, 180, 0.12);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
  opacity: 1;
  transform: none;
}

.sector-panel--oil {
  border-top: 2px solid var(--signal-blue);
}

.sector-panel--power {
  border-top: 2px solid var(--aqua);
}

.sector-panel__header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.sector-panel__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.sector-panel--oil .sector-panel__icon {
  background: rgba(31, 111, 235, 0.15);
  color: var(--signal-blue);
}

.sector-panel--power .sector-panel__icon {
  background: rgba(62, 224, 198, 0.12);
  color: var(--aqua);
}

.sector-panel__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.sector-panel__list li {
  font-size: 14px;
  color: var(--slate);
  padding-left: 16px;
  position: relative;
}

.sector-panel__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 1px;
  background: var(--aqua);
}

/* ---- Project Nodes ---- */
.project-nodes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-md);
}

.project-node {
  padding: var(--space-md);
  background: rgba(7, 11, 20, 0.6);
  border: 1px solid rgba(31, 111, 235, 0.12);
  border-radius: var(--radius-md);
  opacity: 1;
  transform: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.project-node:hover {
  border-color: rgba(31, 111, 235, 0.35);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
}

.project-node__region {
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--aqua);
  margin-bottom: var(--space-xs);
}

.project-node__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: var(--space-xs);
}

.project-node__meta {
  font-size: 13px;
  color: var(--slate);
}

.project-node__tag {
  display: inline-block;
  margin-top: var(--space-sm);
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: rgba(31, 111, 235, 0.12);
  color: var(--signal-blue);
  border-radius: var(--radius-sm);
}

/* ---- Regional Map ---- */
.region-map {
  position: relative;
  padding: var(--space-xl);
  background: rgba(16, 24, 38, 0.5);
  border: 1px solid rgba(31, 111, 235, 0.12);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.region-map__svg {
  width: 100%;
  max-width: 700px;
  margin-inline: auto;
  display: block;
}

.region-map__nodes {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.region-map__label {
  position: absolute;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--slate);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.5s ease, transform 0.5s ease, color 0.3s ease;
}

.region-map__label.is-active {
  opacity: 1;
  transform: translateY(0);
  color: var(--aqua);
}

.region-map__label--egypt { bottom: 28%; left: 18%; }
.region-map__label--iraq { top: 22%; left: 42%; }
.region-map__label--ksa { top: 38%; right: 22%; }
.region-map__label--uae { bottom: 32%; right: 18%; }

/* ---- CTA Section ---- */
.cta-section {
  background: linear-gradient(180deg, var(--obsidian) 0%, rgba(43, 63, 140, 0.12) 50%, var(--obsidian) 100%);
  text-align: center;
}

.cta-section__inner {
  max-width: 640px;
  margin-inline: auto;
}

.cta-section .display {
  margin-bottom: var(--space-md);
}

.cta-section .lead {
  margin-inline: auto;
  margin-bottom: var(--space-lg);
}

/* ---- Footer ---- */
.footer {
  padding-block: var(--space-xl) var(--space-lg);
  border-top: 1px solid rgba(31, 111, 235, 0.1);
  background: var(--night-panel);
}

.footer__grid {
  display: grid;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

@media (min-width: 768px) {
  .footer__grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.footer__brand p {
  font-size: 14px;
  color: var(--slate);
  margin-top: var(--space-sm);
  max-width: 32ch;
}

.footer__logo { height: 36px; margin-bottom: var(--space-sm); }

.footer__col h4 {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--aqua);
  margin-bottom: var(--space-sm);
}

.footer__col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer__col a {
  font-size: 14px;
  color: var(--slate);
  transition: color var(--transition);
}

.footer__col a:hover { color: var(--cool-white); }

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-sm);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(139, 155, 180, 0.1);
  font-size: 13px;
  color: var(--slate);
}

.footer__certs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.footer__cert {
  padding: 4px 10px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid rgba(139, 155, 180, 0.2);
  border-radius: var(--radius-sm);
  color: var(--slate);
}

/* ---- Forms ---- */
.form-panel {
  max-width: 640px;
  margin-inline: auto;
  padding: var(--space-lg);
  background: rgba(16, 24, 38, 0.7);
  border: 1px solid rgba(31, 111, 235, 0.15);
  border-radius: var(--radius-lg);
}

.form-grid {
  display: grid;
  gap: var(--space-md);
}

@media (min-width: 600px) {
  .form-grid--2 {
    grid-template-columns: 1fr 1fr;
  }
}

.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--slate);
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  font-family: inherit;
  font-size: 15px;
  color: var(--cool-white);
  background: rgba(7, 11, 20, 0.6);
  border: 1px solid rgba(139, 155, 180, 0.2);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--signal-blue);
  box-shadow: 0 0 0 3px rgba(31, 111, 235, 0.15);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238B9BB4' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

.form-group select option {
  background: var(--night-panel);
}

.form__submit {
  width: 100%;
  margin-top: var(--space-sm);
}

.form-success {
  display: none;
  text-align: center;
  padding: var(--space-xl);
}

.form-success.is-visible {
  display: block;
}

.form-success__icon {
  width: 64px;
  height: 64px;
  margin-inline: auto;
  margin-bottom: var(--space-md);
  border-radius: 50%;
  background: rgba(62, 224, 198, 0.12);
  border: 1px solid rgba(62, 224, 198, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--aqua);
  animation: success-pulse 2s ease infinite;
}

@keyframes success-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(62, 224, 198, 0.3); }
  50% { box-shadow: 0 0 0 12px rgba(62, 224, 198, 0); }
}

.form-success h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
}

.form-success p {
  color: var(--slate);
  font-size: 15px;
}

.form-panel.is-submitted .form__body {
  display: none;
}

/* ---- Page Hero (inner pages) ---- */
.page-hero {
  padding-top: calc(var(--nav-height) + var(--space-2xl));
  padding-bottom: var(--space-xl);
  position: relative;
  overflow: hidden;
}

.page-hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 30% 30%, rgba(43, 63, 140, 0.15) 0%, transparent 60%),
    var(--obsidian);
}

.page-hero__content {
  position: relative;
  z-index: 1;
}

.page-hero .display {
  margin-bottom: var(--space-sm);
}

.breadcrumb {
  display: flex;
  gap: var(--space-xs);
  font-size: 13px;
  color: var(--slate);
  margin-bottom: var(--space-md);
}

.breadcrumb a:hover { color: var(--aqua); }
.breadcrumb span { color: var(--slate); opacity: 0.5; }

/* ---- About Page ---- */
.about-grid {
  display: grid;
  gap: var(--space-xl);
}

@media (min-width: 768px) {
  .about-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.about-block {
  padding: var(--space-lg);
  background: rgba(16, 24, 38, 0.5);
  border: 1px solid rgba(139, 155, 180, 0.1);
  border-radius: var(--radius-lg);
  opacity: 0;
  transform: translateY(20px);
}

.about-block h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
}

.about-block p {
  font-size: 15px;
  color: var(--slate);
  margin-bottom: var(--space-sm);
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.about-stat {
  text-align: center;
  padding: var(--space-md);
  background: rgba(31, 111, 235, 0.08);
  border-radius: var(--radius-md);
  border: 1px solid rgba(31, 111, 235, 0.15);
}

.about-stat__value {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--signal-blue);
}

.about-stat__label {
  font-size: 12px;
  color: var(--slate);
  margin-top: 4px;
}

.timeline {
  position: relative;
  padding-left: var(--space-lg);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, var(--signal-blue), var(--aqua), transparent);
}

.timeline__item {
  position: relative;
  padding-bottom: var(--space-lg);
  opacity: 0;
  transform: translateX(-12px);
}

.timeline__item::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--space-lg) + 2px);
  top: 6px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--obsidian);
  border: 2px solid var(--signal-blue);
  box-shadow: 0 0 8px var(--glow-blue);
}

.timeline__year {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--aqua);
  font-size: 14px;
  margin-bottom: 4px;
}

.timeline__title {
  font-weight: 600;
  margin-bottom: 4px;
}

.timeline__desc {
  font-size: 14px;
  color: var(--slate);
}

/* ---- Services Page ---- */
.services-intro {
  max-width: 720px;
  margin-bottom: var(--space-xl);
}

.service-detail {
  padding: var(--space-lg);
  background: rgba(16, 24, 38, 0.5);
  border: 1px solid rgba(31, 111, 235, 0.12);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-md);
  opacity: 0;
  transform: translateY(20px);
}

.service-detail__header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.service-detail__num {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  color: rgba(31, 111, 235, 0.25);
  line-height: 1;
}

.service-detail__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-sm);
}

.service-detail__tag {
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  background: rgba(62, 224, 198, 0.08);
  color: var(--aqua);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(62, 224, 198, 0.2);
}

/* ---- Contact Page ---- */
.contact-grid {
  display: grid;
  gap: var(--space-xl);
}

@media (min-width: 900px) {
  .contact-grid {
    grid-template-columns: 1fr 1.2fr;
  }
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.contact-card {
  padding: var(--space-md);
  background: rgba(16, 24, 38, 0.5);
  border: 1px solid rgba(139, 155, 180, 0.12);
  border-radius: var(--radius-md);
}

.contact-card h4 {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--aqua);
  margin-bottom: var(--space-xs);
}

.contact-card p {
  font-size: 15px;
  color: var(--cool-white);
}

.contact-card span {
  font-size: 13px;
  color: var(--slate);
}

/* ---- Utilities ---- */
/* Keep reveals visible in CSS — GSAP owns entrance motion */
.reveal {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }
}

.text-center { text-align: center; }
.mb-lg { margin-bottom: var(--space-lg); }
.mt-lg { margin-top: var(--space-lg); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

@media (max-width: 480px) {
  .hero__actions { flex-direction: column; }
  .hero__actions .btn { width: 100%; justify-content: center; }
  .module-grid--2x3 { grid-template-columns: 1fr; }
}