/* ===========================================
   Warner Energy - Global Stylesheet (Light Tech Theme)
   Theme: Clean White + Tech Cyan + Energy Amber
   =========================================== */

:root {
  /* Brand Colors — Light Tech */
  --color-bg: #f6f9fc;
  --color-bg-2: #eef3f8;
  --color-bg-3: #e4ecf4;
  --color-surface: rgba(255, 255, 255, 0.7);
  --color-surface-hover: rgba(255, 255, 255, 0.95);
  --color-surface-solid: #ffffff;
  --color-border: rgba(15, 60, 120, 0.10);
  --color-border-strong: rgba(0, 150, 220, 0.35);

  --color-primary: #0096d8;     /* Tech blue */
  --color-primary-2: #2bb6e8;
  --color-primary-dark: #006d9f;
  --color-accent: #f59e0b;      /* Energy amber */
  --color-accent-2: #fbbf24;
  --color-success: #10b981;
  --color-text: #33415c;
  --color-text-2: #5b6b83;
  --color-text-3: #8a97ab;
  --color-heading: #0e1a2f;

  /* Gradients */
  --gradient-hero: linear-gradient(135deg, #eaf3fb 0%, #f6f9fc 45%, #eef6ff 100%);
  --gradient-cyan: linear-gradient(135deg, #0096d8 0%, #2bb6e8 100%);
  --gradient-gold: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%);
  --gradient-mix: linear-gradient(135deg, #0096d8 0%, #6366f1 100%);

  /* Shadows */
  --shadow-glow: 0 8px 30px rgba(0, 150, 216, 0.18);
  --shadow-glow-strong: 0 12px 48px rgba(0, 150, 216, 0.28);
  --shadow-card: 0 6px 24px rgba(15, 60, 120, 0.08);
  --shadow-card-hover: 0 18px 48px rgba(0, 150, 216, 0.16);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-display: 'Space Grotesk', 'Inter', sans-serif;

  /* Layout */
  --container: 1280px;
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);

  /* Header height */
  --header-h: 80px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* WebGL/Canvas background layer — light particles */
#starfield {
  position: fixed;
  inset: 0;
  z-index: -2;
  background: var(--gradient-hero);
}

#aurora-canvas {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.45;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-primary-dark);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

ul {
  list-style: none;
}

/* Container */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--color-heading);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); font-weight: 700; }
h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.7rem); }
h4 { font-size: 1.15rem; }

p { color: var(--color-text-2); }

/* Section */
.section {
  padding: 100px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 60px;
}

.section-eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 16px;
  padding: 6px 16px;
  background: rgba(0, 150, 216, 0.08);
  border: 1px solid var(--color-border-strong);
  border-radius: 100px;
}

.section-title {
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-2);
}

/* ===========================================
   HEADER / NAV
   =========================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid transparent;
  transition: all var(--transition);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.92);
  border-bottom-color: var(--color-border);
  box-shadow: 0 4px 20px rgba(15, 60, 120, 0.06);
}

.nav {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-heading);
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.logo-img {
  height: 40px;
  width: auto;
  object-fit: contain;
}

.logo-mark {
  width: 38px;
  height: 38px;
  position: relative;
  display: grid;
  place-items: center;
  background: var(--gradient-cyan);
  border-radius: 10px;
  box-shadow: var(--shadow-glow);
}

.logo-mark::before {
  content: '';
  position: absolute;
  inset: 4px;
  background: #fff;
  border-radius: 7px;
}

.logo-mark svg {
  position: relative;
  z-index: 1;
  width: 22px;
  height: 22px;
  color: var(--color-primary);
}

.logo-text small {
  display: block;
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--color-text-2);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  display: block;
  padding: 10px 14px;
  color: var(--color-text);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 8px;
  transition: all var(--transition);
  position: relative;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
  background: rgba(0, 150, 216, 0.08);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: 8px;
}

.nav-cta {
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: var(--color-surface-solid);
  border: 1px solid var(--color-border);
}

.nav-toggle span {
  width: 18px;
  height: 2px;
  background: var(--color-heading);
  position: relative;
  transition: all var(--transition);
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: '';
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: var(--color-heading);
  transition: all var(--transition);
}

.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }

.nav-toggle.open span { background: transparent; }
.nav-toggle.open span::before { transform: rotate(45deg); top: 0; }
.nav-toggle.open span::after { transform: rotate(-45deg); top: 0; }

/* ===========================================
   LANGUAGE SWITCHER
   =========================================== */
.lang-switcher {
  position: relative;
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  background: var(--color-surface-solid);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  transition: all var(--transition);
}

.lang-btn:hover {
  border-color: var(--color-border-strong);
  color: var(--color-primary);
}

.lang-btn svg {
  width: 14px;
  height: 14px;
  transition: transform var(--transition);
}

.lang-btn.open svg {
  transform: rotate(180deg);
}

.lang-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 180px;
  background: var(--color-surface-solid);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  box-shadow: 0 12px 40px rgba(15, 60, 120, 0.16);
  padding: 6px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition);
  z-index: 110;
}

.lang-dropdown.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-option {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 14px;
  font-size: 0.9rem;
  color: var(--color-text);
  border-radius: 8px;
  transition: all var(--transition);
  text-align: left;
}

.lang-option:hover {
  background: rgba(0, 150, 216, 0.08);
  color: var(--color-primary);
}

.lang-option.active {
  background: rgba(0, 150, 216, 0.12);
  color: var(--color-primary);
  font-weight: 600;
}

.lang-option .check {
  margin-left: auto;
  opacity: 0;
  color: var(--color-primary);
}

.lang-option.active .check {
  opacity: 1;
}

/* ===========================================
   BUTTONS
   =========================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 100px;
  transition: all var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent, rgba(255,255,255,0.25), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s;
}

.btn:hover::before { transform: translateX(100%); }

.btn-primary {
  background: var(--gradient-cyan);
  color: #ffffff;
  box-shadow: 0 6px 20px rgba(0, 150, 216, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 32px rgba(0, 150, 216, 0.45);
  color: #ffffff;
}

.btn-ghost {
  background: transparent;
  color: var(--color-heading);
  border: 1px solid var(--color-border-strong);
}

.btn-ghost:hover {
  background: rgba(0, 150, 216, 0.06);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-gold {
  background: var(--gradient-gold);
  color: #ffffff;
  box-shadow: 0 6px 20px rgba(245, 158, 11, 0.3);
}

.btn-gold:hover {
  transform: translateY(-2px);
  color: #ffffff;
  box-shadow: 0 10px 32px rgba(245, 158, 11, 0.45);
}

.btn-arrow::after {
  content: '→';
  transition: transform var(--transition);
}

.btn-arrow:hover::after { transform: translateX(4px); }

/* ===========================================
   HERO
   =========================================== */
.hero {
  min-height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 40px) 0 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.16;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(246,249,252,0.55) 0%, rgba(246,249,252,0.75) 60%, var(--color-bg) 100%),
    radial-gradient(ellipse at 30% 50%, transparent 0%, rgba(246,249,252,0.4) 70%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(0, 150, 216, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 150, 216, 0.06) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero-content {
  max-width: 900px;
  position: relative;
  z-index: 2;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 24px;
  padding: 8px 18px;
  background: rgba(0, 150, 216, 0.08);
  border: 1px solid var(--color-border-strong);
  border-radius: 100px;
  backdrop-filter: blur(10px);
}

.hero-eyebrow::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--color-primary);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

.hero h1 {
  margin-bottom: 24px;
  color: var(--color-heading);
}

.hero h1 .highlight {
  background: var(--gradient-cyan);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  position: relative;
}

.hero-tagline {
  font-size: 1.2rem;
  color: var(--color-text-2);
  margin-bottom: 40px;
  max-width: 720px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 60px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  padding-top: 40px;
  border-top: 1px solid var(--color-border);
}

.stat {
  position: relative;
}

.stat-value {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 700;
  color: var(--color-heading);
  line-height: 1;
  margin-bottom: 6px;
}

.stat-value .suffix {
  color: var(--color-primary);
  font-size: 0.7em;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--color-text-2);
  letter-spacing: 0.05em;
}

/* ===========================================
   BANNER SUB-PAGE HEADER
   =========================================== */
.page-banner {
  position: relative;
  height: 480px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-top: var(--header-h);
}

.page-banner-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.page-banner-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.9) saturate(1.1);
}

.page-banner-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(246,249,252,0.6) 0%, rgba(246,249,252,0.82) 60%, var(--color-bg) 100%);
}

.page-banner-content {
  text-align: center;
  position: relative;
  z-index: 2;
  max-width: 900px;
  padding: 0 24px;
}

.page-banner h1 {
  margin-bottom: 16px;
  font-size: clamp(2.4rem, 5vw, 4rem);
  color: var(--color-heading);
}

.page-banner p {
  font-size: 1.15rem;
  color: var(--color-text);
  max-width: 700px;
  margin: 0 auto;
}

.breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--color-text-2);
  margin-bottom: 20px;
  padding: 6px 16px;
  background: rgba(255,255,255,0.7);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  backdrop-filter: blur(10px);
}

.breadcrumb a { color: var(--color-text-2); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb span { color: var(--color-primary); }

/* ===========================================
   CARDS
   =========================================== */
.card {
  position: relative;
  background: var(--color-surface-solid);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-card-hover);
}

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

.card-icon {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  background: rgba(0, 150, 216, 0.08);
  border: 1px solid var(--color-border-strong);
  border-radius: 14px;
  margin-bottom: 20px;
  color: var(--color-primary);
  transition: all var(--transition);
}

.card:hover .card-icon {
  background: var(--gradient-cyan);
  color: #ffffff;
  border-color: transparent;
  transform: rotate(-6deg) scale(1.05);
  box-shadow: var(--shadow-glow);
}

.card h3 {
  margin-bottom: 12px;
  font-size: 1.2rem;
  color: var(--color-heading);
}

.card p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-text-2);
}

/* ===========================================
   GRIDS
   =========================================== */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }

/* ===========================================
   OVERVIEW / FEATURES
   =========================================== */
.overview {
  background: linear-gradient(180deg, transparent 0%, rgba(228, 236, 244, 0.6) 100%);
}

.overview-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 60px;
  align-items: center;
}

.overview-visual {
  position: relative;
  aspect-ratio: 4/3;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.overview-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.overview-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,150,216,0.12) 0%, transparent 50%, rgba(245,158,11,0.08) 100%);
  mix-blend-mode: multiply;
}

.overview-visual::before {
  content: '';
  position: absolute;
  top: -1px;
  left: -1px;
  right: -1px;
  bottom: -1px;
  background: var(--gradient-cyan);
  z-index: -1;
  border-radius: var(--radius-lg);
  opacity: 0.25;
  filter: blur(20px);
}

.features-list {
  display: grid;
  gap: 16px;
  margin-top: 32px;
}

.feature {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--color-surface-solid);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: all var(--transition);
  box-shadow: var(--shadow-card);
}

.feature:hover {
  border-color: var(--color-border-strong);
  transform: translateX(4px);
}

.feature-num {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  background: var(--gradient-cyan);
  color: #ffffff;
  border-radius: 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
}

.feature h4 {
  font-size: 1.05rem;
  margin-bottom: 4px;
  color: var(--color-heading);
}

.feature p {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--color-text-2);
}

/* ===========================================
   SOLUTIONS SHOWCASE
   =========================================== */
.solutions-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-top: 40px;
}

.solution-tab {
  position: relative;
  padding: 20px 16px;
  background: var(--color-surface-solid);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.solution-tab::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-cyan);
  opacity: 0;
  transition: opacity var(--transition);
  z-index: -1;
}

.solution-tab:hover,
.solution-tab.active {
  border-color: var(--color-primary);
  color: #ffffff;
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.solution-tab:hover::before,
.solution-tab.active::before { opacity: 1; }

.solution-tab .num {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

.solution-tab:hover .num,
.solution-tab.active .num { color: #ffffff; }

.solution-tab .label {
  font-size: 0.9rem;
  font-weight: 600;
  line-height: 1.3;
}

.solution-detail {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 60px;
  align-items: center;
  margin-top: 60px;
}

.solution-image {
  aspect-ratio: 4/3;
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  box-shadow: var(--shadow-card);
}

.solution-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.solution-detail:hover .solution-image img {
  transform: scale(1.05);
}

.solution-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 50%, rgba(0,150,216,0.15) 100%);
  pointer-events: none;
}

.solution-content .badge {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(0, 150, 216, 0.1);
  color: var(--color-primary);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

.solution-content h3 {
  font-size: 2rem;
  margin-bottom: 16px;
  color: var(--color-heading);
}

.solution-content p {
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 28px;
  color: var(--color-text-2);
}

.solution-meta {
  display: flex;
  gap: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

.solution-meta div {
  flex: 1;
}

.solution-meta strong {
  display: block;
  font-family: var(--font-display);
  color: var(--color-primary);
  font-size: 1.1rem;
  margin-bottom: 4px;
}

.solution-meta span {
  font-size: 0.85rem;
  color: var(--color-text-2);
}

/* ===========================================
   PROJECTS
   =========================================== */
.project-list {
  display: grid;
  gap: 16px;
}

.project-card {
  display: grid;
  grid-template-columns: 60px 1.5fr 1.2fr 1fr auto;
  gap: 24px;
  align-items: center;
  padding: 28px 32px;
  background: var(--color-surface-solid);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.project-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--gradient-cyan);
  transform: scaleY(0);
  transition: transform var(--transition);
}

.project-card:hover {
  border-color: var(--color-border-strong);
  transform: translateX(4px);
  box-shadow: var(--shadow-card-hover);
}

.project-card:hover::before { transform: scaleY(1); }

.project-num {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  text-align: center;
}

.project-location {
  font-size: 0.95rem;
  color: var(--color-heading);
  font-weight: 600;
}

.project-name {
  font-size: 0.9rem;
  color: var(--color-text-2);
  margin-top: 4px;
}

.project-capacity {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-accent);
}

.project-capacity span {
  font-size: 0.85rem;
  color: var(--color-text-2);
  font-weight: 500;
  display: block;
  margin-top: 2px;
}

/* ===========================================
   PARTNERS / COOPERATION MODES
   =========================================== */
.modes-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.mode-card {
  position: relative;
  padding: 36px;
  background: var(--color-surface-solid);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.mode-card::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(0,150,216,0.1) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition);
}

.mode-card:hover {
  border-color: var(--color-border-strong);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.mode-card:hover::after { opacity: 1; }

.mode-card .tag {
  position: relative;
  z-index: 1;
  display: inline-block;
  padding: 4px 12px;
  background: rgba(0, 150, 216, 0.1);
  color: var(--color-primary);
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

.mode-card h3 {
  position: relative;
  z-index: 1;
  font-size: 1.3rem;
  margin-bottom: 12px;
  color: var(--color-heading);
}

.mode-card p {
  position: relative;
  z-index: 1;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-text-2);
}

/* ===========================================
   PARTNER LOGOS
   =========================================== */
.partners-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}

.partner-cell {
  aspect-ratio: 3/2;
  display: grid;
  place-items: center;
  background: var(--color-surface-solid);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text-2);
  transition: all var(--transition);
  text-align: center;
  padding: 12px;
  box-shadow: var(--shadow-card);
}

.partner-cell:hover {
  color: var(--color-primary);
  border-color: var(--color-border-strong);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
}

/* ===========================================
   ABOUT
   =========================================== */
.about-intro {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-visual {
  position: relative;
  aspect-ratio: 4/3;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.about-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(246,249,252,0.05) 0%, transparent 50%, rgba(0,150,216,0.12) 100%);
  mix-blend-mode: multiply;
}

.about-text h2 {
  margin-bottom: 20px;
  color: var(--color-heading);
}

.about-text p {
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 16px;
  color: var(--color-text-2);
}

.about-text .signature {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  font-size: 0.9rem;
  color: var(--color-text-2);
}

.about-text .signature strong {
  display: block;
  color: var(--color-heading);
  font-size: 1.05rem;
  margin-bottom: 4px;
}

/* ===========================================
   MILESTONES
   =========================================== */
.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding-left: 60px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, transparent, var(--color-primary), var(--color-accent), transparent);
}

.timeline-item {
  position: relative;
  padding-bottom: 40px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -47px;
  top: 8px;
  width: 16px;
  height: 16px;
  background: var(--color-surface-solid);
  border: 2px solid var(--color-primary);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(0, 150, 216, 0.15);
  transition: all var(--transition);
}

.timeline-item:hover::before {
  background: var(--color-primary);
  transform: scale(1.3);
  box-shadow: 0 0 0 6px rgba(0, 150, 216, 0.25);
}

.timeline-year {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.timeline-content h4 {
  font-size: 1.1rem;
  margin-bottom: 6px;
  color: var(--color-heading);
}

.timeline-content p {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text-2);
}

/* ===========================================
   CONTACT
   =========================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-item {
  display: flex;
  gap: 16px;
  padding: 24px;
  background: var(--color-surface-solid);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: all var(--transition);
  box-shadow: var(--shadow-card);
}

.contact-item:hover {
  border-color: var(--color-border-strong);
  transform: translateX(4px);
  box-shadow: var(--shadow-card-hover);
}

.contact-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  background: rgba(0, 150, 216, 0.08);
  border: 1px solid var(--color-border-strong);
  border-radius: 12px;
  color: var(--color-primary);
}

.contact-item h4 {
  font-size: 0.9rem;
  color: var(--color-text-2);
  font-weight: 500;
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.contact-item p {
  font-size: 1.05rem;
  color: var(--color-heading);
  font-weight: 500;
}

.contact-item a {
  font-size: 1.05rem;
  color: var(--color-heading);
  font-weight: 500;
}

.contact-item a:hover { color: var(--color-primary); }

.contact-form {
  padding: 40px;
  background: var(--color-surface-solid);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--color-text-2);
  margin-bottom: 8px;
  font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--color-heading);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  transition: all var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(0, 150, 216, 0.12);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* ===========================================
   FOOTER
   =========================================== */
.site-footer {
  position: relative;
  margin-top: 100px;
  padding: 80px 0 32px;
  background: linear-gradient(180deg, transparent 0%, rgba(228, 236, 244, 0.7) 100%);
  border-top: 1px solid var(--color-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand p {
  font-size: 0.92rem;
  margin: 16px 0 24px;
  max-width: 360px;
  color: var(--color-text-2);
}

.footer-socials {
  display: flex;
  gap: 12px;
}

.footer-socials a {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  background: var(--color-surface-solid);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  color: var(--color-text-2);
  transition: all var(--transition);
  box-shadow: var(--shadow-card);
}

.footer-socials a:hover {
  background: var(--gradient-cyan);
  color: #ffffff;
  border-color: transparent;
  transform: translateY(-2px);
}

.footer-col h4 {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-heading);
  margin-bottom: 20px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col a {
  font-size: 0.92rem;
  color: var(--color-text-2);
  transition: color var(--transition);
}

.footer-col a:hover { color: var(--color-primary); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
  font-size: 0.85rem;
  color: var(--color-text-3);
}

.footer-bottom a {
  color: var(--color-text-2);
}

/* ===========================================
   ANIMATIONS
   =========================================== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes glow {
  0%, 100% { box-shadow: 0 0 20px rgba(0, 150, 216, 0.25); }
  50% { box-shadow: 0 0 40px rgba(0, 150, 216, 0.5); }
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ===========================================
   RESPONSIVE
   =========================================== */
@media (max-width: 1200px) {
  .nav-link { padding: 10px 10px; font-size: 0.85rem; }
}

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .partners-grid { grid-template-columns: repeat(4, 1fr); }
  .solutions-row { grid-template-columns: repeat(3, 1fr); }
  .overview-grid,
  .about-intro,
  .contact-grid,
  .solution-detail { grid-template-columns: 1fr; gap: 40px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --header-h: 64px; }
  .section { padding: 60px 0; }
  .page-banner { height: 360px; }
  .nav-menu {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    padding: 24px;
    gap: 8px;
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-200%);
    transition: transform var(--transition);
    box-shadow: 0 12px 40px rgba(15, 60, 120, 0.12);
  }
  .nav-menu.open { transform: translateY(0); }
  .nav-link { padding: 14px 20px; }
  .nav-cta { margin-left: 0; margin-top: 12px; }
  .nav-toggle { display: flex; }

  .grid-2, .grid-3, .grid-4, .modes-grid { grid-template-columns: 1fr; }
  .partners-grid { grid-template-columns: repeat(3, 1fr); }
  .solutions-row { grid-template-columns: 1fr 1fr; }

  .project-card {
    grid-template-columns: 1fr;
    gap: 12px;
    text-align: left;
  }

  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }

  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { justify-content: center; }

  .form-row { grid-template-columns: 1fr; }
  .contact-form { padding: 24px; }

  .nav-actions { margin-left: auto; }
  .lang-btn span { display: none; }
  .lang-btn { padding: 8px 10px; }
}

@media (max-width: 480px) {
  .hero-stats { grid-template-columns: 1fr 1fr; gap: 20px; }
  .partners-grid { grid-template-columns: repeat(2, 1fr); }
  .solutions-row { grid-template-columns: 1fr; }
  .logo-img { height: 32px; }
}

/* Selection */
::selection {
  background: rgba(0, 150, 216, 0.2);
  color: var(--color-heading);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: var(--color-bg-2);
}
::-webkit-scrollbar-thumb {
  background: var(--color-bg-3);
  border-radius: 10px;
  border: 2px solid var(--color-bg-2);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}

/* Table styling (for comparison) */
table {
  color: var(--color-text);
}
table th, table td {
  color: inherit;
}