/* ============================================
   PNCNL – NĂNG LƯỢNG VÔ TẬN
   Premium Energy Website Stylesheet
   ============================================ */

:root {
  --clr-dark: #F0F9FF;
  --clr-dark-2: #E0F2FE;
  --clr-blue: #0284C7;
  --clr-blue-deep: #0369a1;
  --clr-gold: #F59E0B;
  --clr-gold-bright: #FBBF24;
  --clr-purple: #0891B2;
  --clr-purple-bright: #06B6D4;
  --clr-green: #059669;
  --clr-green-bright: #10B981;
  --clr-white: #0F172A;
  --clr-white-dim: rgba(15,23,42,0.65);
  --clr-card-bg: rgba(255,255,255,0.85);
  --clr-card-border: rgba(2,132,199,0.15);
  --gradient-primary: linear-gradient(135deg, #0284C7 0%, #0891B2 45%, #059669 100%);
  --gradient-cta: linear-gradient(135deg, #0284C7, #059669);
  --font-main: Tahoma, Geneva, 'Segoe UI', Arial, sans-serif;
  --font-alt: Tahoma, Geneva, 'Segoe UI', Arial, sans-serif;
  --transition: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  --transition-smooth: 0.3s ease;
}

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

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-main);
  background: var(--clr-dark);
  color: var(--clr-white);
  overflow-x: hidden;
  line-height: 1.85;
  letter-spacing: 0.01em;
  -webkit-text-size-adjust: 100%;
}

/* ---- CANVAS ---- */
#particleCanvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.5;
}

/* ---- NAVBAR ---- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 4rem;
  backdrop-filter: blur(24px);
  background: rgba(240,249,255,0.92);
  border-bottom: 1px solid rgba(2,132,199,0.15);
  transition: padding 0.3s ease, background 0.3s ease;
  box-shadow: 0 2px 16px rgba(2,132,199,0.08);
}

.nav-cta {
  padding: 0.55rem 1.2rem;
  background: var(--gradient-cta);
  border: none;
  border-radius: 50px;
  color: white;
  font-family: var(--font-main);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.2s;
  letter-spacing: 0.01em;
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
}
.nav-cta:hover { opacity: 0.85; transform: scale(1.04); }

@media (max-width: 768px) {
  .navbar { padding: 0.85rem 1.2rem; gap: 0.5rem; }
  .navbar.scrolled { padding: 0.7rem 1.2rem; }
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-alt);
  font-weight: 700;
  font-size: 1.4rem;
  letter-spacing: 0.05em;
}

.logo-img {
  height: 36px;
  width: auto;
  object-fit: contain;
  flex-shrink: 0;
}

.logo-stack {
  display: flex;
  flex-direction: column;
  gap: 0;
  line-height: 1.25;
}

.logo-institute {
  font-size: 0.65rem;
  font-weight: 400;
  color: rgba(15,23,42,0.45);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.logo-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2.5rem;
}

.nav-links a {
  color: var(--clr-white-dim);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: color 0.2s;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--gradient-primary);
  transition: width 0.3s ease;
  border-radius: 2px;
}

.nav-links a:hover { color: var(--clr-white); }
.nav-links a:hover::after { width: 100%; }

.nav-cta {
  padding: 0.55rem 1.5rem;
  background: var(--gradient-cta);
  border: none;
  border-radius: 50px;
  color: white;
  font-family: var(--font-main);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.2s;
  letter-spacing: 0.02em;
}
.nav-cta:hover { opacity: 0.85; transform: scale(1.04); }

/* ---- HERO ---- */
.hero {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 8rem 4rem 4rem;
  background:
    linear-gradient(160deg, #EFF6FF 0%, #ECFDF5 50%, #F0F9FF 100%);
}

.hero-bg-overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 60% 0%, rgba(2,132,199,0.1) 0%, transparent 70%),
    radial-gradient(ellipse 50% 50% at 10% 80%, rgba(5,150,105,0.08) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 90% 60%, rgba(245,158,11,0.06) 0%, transparent 60%);
  z-index: 1;
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  z-index: 1;
  pointer-events: none;
}
.glow-1 {
  width: 500px; height: 500px;
  background: rgba(2,132,199,0.1);
  top: -100px; left: -100px;
  animation: glow-float 8s ease-in-out infinite;
}
.glow-2 {
  width: 400px; height: 400px;
  background: rgba(5,150,105,0.08);
  top: 20%; right: 5%;
  animation: glow-float 10s ease-in-out infinite 2s;
}
.glow-3 {
  width: 300px; height: 300px;
  background: rgba(245,158,11,0.07);
  bottom: 10%; left: 40%;
  animation: glow-float 12s ease-in-out infinite 4s;
}

@keyframes glow-float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-30px) scale(1.1); }
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 680px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: rgba(2,132,199,0.1);
  border: 1px solid rgba(2,132,199,0.25);
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--clr-blue);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  opacity: 0;
  transform: translateY(20px);
  animation: fade-up 0.8s forwards 0.2s;
  max-width: 100%;
  flex-wrap: wrap;
}

.badge-dot {
  width: 8px; height: 8px;
  background: var(--clr-blue);
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
  flex-shrink: 0;
}

@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 0 rgba(2,132,199,0.4); }
  50% { box-shadow: 0 0 0 6px rgba(2,132,199,0); }
}

.hero-title {
  font-size: clamp(1.8rem, 6vw, 3.8rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 1.8rem;
  opacity: 0;
  transform: translateY(30px);
  animation: fade-up 0.9s forwards 0.4s;
  word-break: keep-all;
  overflow-wrap: break-word;
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% auto;
  animation: gradient-shift 4s linear infinite;
}

@keyframes gradient-shift {
  0% { background-position: 0% center; }
  100% { background-position: 200% center; }
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--clr-white-dim);
  line-height: 2;
  margin-bottom: 2.8rem;
  opacity: 0;
  transform: translateY(30px);
  animation: fade-up 0.9s forwards 0.6s;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 3rem;
  opacity: 0;
  transform: translateY(30px);
  animation: fade-up 0.9s forwards 0.8s;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.9rem 2.2rem;
  background: var(--gradient-cta);
  color: white;
  text-decoration: none;
  border-radius: 50px;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.02em;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 8px 30px rgba(2,132,199,0.25);
  border: none;
  cursor: pointer;
  font-family: var(--font-main);
}
.btn-primary svg { width: 18px; height: 18px; transition: transform 0.2s; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 40px rgba(2,132,199,0.35); }
.btn-primary:hover svg { transform: translateX(4px); }

.btn-secondary {
  color: var(--clr-blue-deep);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  transition: color 0.2s;
  border-bottom: 1px solid rgba(2,132,199,0.3);
  padding-bottom: 2px;
}
.btn-secondary:hover { color: var(--clr-blue); border-color: rgba(2,132,199,0.7); }

/* ---- STATS ---- */
.stats-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2rem;
  align-items: center;
  opacity: 0;
  transform: translateY(20px);
  animation: fade-up 0.9s forwards 1s;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.stat-value {
  font-size: 2rem;
  font-weight: 900;
  font-family: var(--font-alt);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.stat-unit {
  font-size: 1.2rem;
  font-weight: 900;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--clr-white-dim);
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 0.2rem;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.1);
}

.stat-icon {
  font-size: 1.8rem;
  display: block;
  margin-bottom: 0.25rem;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.1rem;
  text-align: center;
}

/* ---- ENERGY ORB ---- */
.energy-orb-wrapper {
  position: absolute;
  right: 8%;
  top: 50%;
  transform: translateY(-50%);
  z-index: 3;
  opacity: 0;
  animation: fade-in 1.5s forwards 1.2s;
}

.energy-orb {
  position: relative;
  width: 380px;
  height: 380px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.orb-core {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: radial-gradient(circle, #f59e0b 0%, #0ea5e9 50%, #8b5cf6 100%);
  box-shadow:
    0 0 40px rgba(14,165,233,0.5),
    0 0 80px rgba(139,92,246,0.3),
    0 0 120px rgba(245,158,11,0.2);
  animation: orb-pulse 3s ease-in-out infinite;
  z-index: 3;
}

@keyframes orb-pulse {
  0%, 100% { transform: scale(1); box-shadow: 0 0 40px rgba(14,165,233,0.5), 0 0 80px rgba(139,92,246,0.3); }
  50% { transform: scale(1.08); box-shadow: 0 0 60px rgba(14,165,233,0.7), 0 0 120px rgba(139,92,246,0.5), 0 0 160px rgba(245,158,11,0.3); }
}

.orb-ring {
  position: absolute;
  border-radius: 50%;
  border: 2px solid;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
}

.ring-1 {
  width: 180px; height: 180px;
  border-color: rgba(14,165,233,0.4);
  animation: ring-spin 6s linear infinite;
}
.ring-2 {
  width: 260px; height: 260px;
  border-color: rgba(139,92,246,0.3);
  border-style: dashed;
  animation: ring-spin 10s linear infinite reverse;
}
.ring-3 {
  width: 340px; height: 340px;
  border-color: rgba(245,158,11,0.2);
  animation: ring-spin 16s linear infinite;
}

@keyframes ring-spin {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

.orb-particles {
  position: absolute;
  inset: 0;
}

.orb-particles span {
  position: absolute;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--clr-blue);
}

.orb-particles span:nth-child(1) { top: 5%; left: 46%; background: var(--clr-gold); animation: particle-float 4s ease-in-out infinite; }
.orb-particles span:nth-child(2) { top: 20%; right: 10%; background: var(--clr-purple); animation: particle-float 5s ease-in-out infinite 0.5s; }
.orb-particles span:nth-child(3) { top: 50%; right: 3%; background: var(--clr-blue); animation: particle-float 3.5s ease-in-out infinite 1s; }
.orb-particles span:nth-child(4) { bottom: 15%; right: 15%; background: var(--clr-gold); animation: particle-float 4.5s ease-in-out infinite 1.5s; }
.orb-particles span:nth-child(5) { bottom: 5%; left: 46%; background: var(--clr-purple); animation: particle-float 4s ease-in-out infinite 2s; }
.orb-particles span:nth-child(6) { bottom: 20%; left: 10%; background: var(--clr-blue); animation: particle-float 5s ease-in-out infinite 0.8s; }
.orb-particles span:nth-child(7) { top: 50%; left: 3%; background: var(--clr-gold); animation: particle-float 3.5s ease-in-out infinite 1.2s; }
.orb-particles span:nth-child(8) { top: 15%; left: 15%; background: var(--clr-purple); animation: particle-float 4.5s ease-in-out infinite 2.5s; }

@keyframes particle-float {
  0%, 100% { transform: translateY(0) scale(1); opacity: 0.8; }
  50% { transform: translateY(-12px) scale(1.4); opacity: 1; }
}

/* ---- SCROLL INDICATOR ---- */
.scroll-indicator {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.7rem;
  color: var(--clr-white-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  z-index: 4;
  opacity: 0;
  animation: fade-in 1s forwards 2s;
  white-space: nowrap;
}

.scroll-mouse {
  width: 26px; height: 42px;
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 13px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}

.scroll-wheel {
  width: 4px; height: 8px;
  background: var(--clr-blue);
  border-radius: 2px;
  animation: scroll-anim 2s ease-in-out infinite;
}

@keyframes scroll-anim {
  0% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(12px); opacity: 0; }
}

/* ---- SECTION COMMON ---- */
.section-container {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  text-align: center;
}

.section-tag {
  display: inline-block;
  padding: 0.35rem 1rem;
  background: rgba(2,132,199,0.1);
  border: 1px solid rgba(2,132,199,0.2);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--clr-blue);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1.2rem;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin-bottom: 1.5rem;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--clr-white-dim);
  max-width: 640px;
  margin: 0 auto 4rem;
  line-height: 2;
}

/* ---- ABOUT SECTION ---- */
.about-section {
  padding: 8rem 4rem;
  position: relative;
  z-index: 2;
  background: #fff;
}

.about-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  text-align: left;
  margin-top: 1rem;
}

.about-card {
  position: relative;
  padding: 3rem 2.4rem;
  background: #F8FCFF;
  border-radius: 20px;
  border: 1px solid rgba(2,132,199,0.12);
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
  overflow: hidden;
}

.about-card::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.3s;
  border-radius: 20px;
}

.card-glow-blue::before { background: radial-gradient(circle at top left, rgba(2,132,199,0.08), transparent 70%); }
.card-glow-gold::before { background: radial-gradient(circle at top left, rgba(245,158,11,0.08), transparent 70%); }
.card-glow-purple::before { background: radial-gradient(circle at top left, rgba(5,150,105,0.08), transparent 70%); }

.about-card:hover { transform: translateY(-6px); box-shadow: 0 12px 40px rgba(2,132,199,0.1); }
.about-card:hover::before { opacity: 1; }
.card-glow-blue:hover { border-color: rgba(2,132,199,0.3); }
.card-glow-gold:hover { border-color: rgba(245,158,11,0.3); }
.card-glow-purple:hover { border-color: rgba(5,150,105,0.3); }

.featured-card {
  border-color: rgba(2,132,199,0.2);
  background: rgba(2,132,199,0.04);
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: 1.4rem;
  display: block;
}

.about-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 1rem;
  letter-spacing: 0;
  color: #0F172A;
}

.about-card p {
  font-size: 0.95rem;
  color: rgba(15,23,42,0.65);
  line-height: 1.9;
}

.card-badge {
  position: absolute;
  top: 1.2rem; right: 1.2rem;
  padding: 0.25rem 0.75rem;
  background: rgba(2,132,199,0.12);
  border: 1px solid rgba(2,132,199,0.3);
  border-radius: 50px;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--clr-blue);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* ---- ENERGY SECTION ---- */
.energy-section {
  padding: 8rem 4rem;
  position: relative;
  background: #F0F9FF;
  z-index: 2;
  overflow: hidden;
}

.energy-bg-lines {
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 100px,
      rgba(2,132,199,0.04) 100px,
      rgba(2,132,199,0.04) 101px
    ),
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 100px,
      rgba(5,150,105,0.04) 100px,
      rgba(5,150,105,0.04) 101px
    );
}

.energy-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  text-align: left;
}

.energy-item {
  display: flex;
  align-items: flex-start;
  gap: 1.4rem;
  padding: 2rem 1.8rem;
  background: #ffffff;
  border-radius: 16px;
  border: 1px solid rgba(2,132,199,0.1);
  transition: transform 0.3s, background 0.3s, border-color 0.3s;
  cursor: default;
}

.energy-item:hover {
  transform: translateY(-4px);
  background: #F0F9FF;
  border-color: rgba(2,132,199,0.25);
  box-shadow: 0 8px 30px rgba(2,132,199,0.08);
}

.energy-icon-wrapper {
  position: relative;
  flex-shrink: 0;
  width: 56px; height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.energy-icon-bg {
  position: absolute;
  inset: 0;
  border-radius: 14px;
  background: rgba(2,132,199,0.08);
  border: 1px solid rgba(2,132,199,0.15);
}

.energy-icon { font-size: 1.6rem; position: relative; z-index: 1; }

.energy-info h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
  letter-spacing: 0;
  color: #0F172A;
}

.energy-info p {
  font-size: 0.9rem;
  color: rgba(15,23,42,0.6);
  line-height: 1.9;
}

/* ---- QUOTE SECTION ---- */
.quote-section {
  padding: 8rem 4rem;
  position: relative;
  z-index: 2;
  text-align: center;
  overflow: hidden;
  background: linear-gradient(135deg, #EFF6FF 0%, #ECFDF5 100%);
}

.quote-glow {
  position: absolute;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(2,132,199,0.08) 0%, transparent 70%);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  filter: blur(60px);
}

.main-quote {
  font-size: clamp(1.2rem, 2.5vw, 1.8rem);
  font-weight: 400;
  line-height: 2.2;
  color: rgba(15,23,42,0.75);
  max-width: 800px;
  margin: 0 auto 2rem;
  font-style: italic;
  position: relative;
  z-index: 2;
}

.quote-mark {
  font-size: 4rem;
  line-height: 0;
  vertical-align: -1.5rem;
  opacity: 0.3;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-style: normal;
}

.quote-author {
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-blue);
  font-weight: 700;
  position: relative;
  z-index: 2;
}

/* ---- CONTACT/CTA SECTION ---- */
.contact-section {
  padding: 4rem 4rem 10rem;
  position: relative;
  z-index: 2;
  background: #fff;
}

.cta-card {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 3rem;
  padding: 4rem;
  background: linear-gradient(135deg, #EFF6FF, #ECFDF5);
  border: 1px solid rgba(2,132,199,0.15);
  border-radius: 28px;
  overflow: hidden;
}

.cta-glow {
  position: absolute;
  width: 500px; height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(2,132,199,0.08) 0%, transparent 70%);
  top: 50%; left: 0;
  transform: translateY(-50%);
  pointer-events: none;
}

.cta-content { flex: 1; position: relative; z-index: 2; }
.cta-title {
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 900;
  margin-bottom: 1.2rem;
  letter-spacing: -0.01em;
  text-align: left;
}
.cta-subtitle {
  font-size: 1.05rem;
  color: var(--clr-white-dim);
  margin-bottom: 2.2rem;
  line-height: 2;
  text-align: left;
}

.cta-form {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
}

.cta-input {
  flex: 1;
  padding: 0.9rem 1.5rem;
  background: rgba(255,255,255,0.9);
  border: 1px solid rgba(2,132,199,0.2);
  border-radius: 50px;
  color: #0F172A;
  font-family: var(--font-main);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s;
}
.cta-input::placeholder { color: rgba(15,23,42,0.35); }
.cta-input:focus { border-color: rgba(2,132,199,0.5); }

.cta-note {
  font-size: 0.82rem;
  color: rgba(15,23,42,0.45);
  text-align: left;
}

.cta-visual {
  flex-shrink: 0;
  position: relative;
  z-index: 2;
}

.cta-orb {
  width: 200px; height: 200px;
  border-radius: 50%;
  background: var(--gradient-cta);
  opacity: 0.15;
  filter: blur(40px);
  animation: cta-orb-pulse 4s ease-in-out infinite;
}

.cta-orb-inner {
  width: 100%; height: 100%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245,158,11,0.3) 0%, transparent 70%);
}

@keyframes cta-orb-pulse {
  0%, 100% { transform: scale(1); opacity: 0.15; }
  50% { transform: scale(1.2); opacity: 0.25; }
}

/* ---- FOOTER ---- */
.footer {
  background: #0F172A;
  border-top: 1px solid rgba(2,132,199,0.15);
  padding: 3rem 4rem;
  text-align: center;
  position: relative;
  z-index: 2;
}

.footer-content { display: flex; flex-direction: column; align-items: center; gap: 0.75rem; }

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-alt);
  font-weight: 700;
  font-size: 1.2rem;
}

.footer-tagline {
  font-size: 0.9rem;
  color: rgba(248,250,252,0.5);
  letter-spacing: 0.05em;
}

.footer-copy {
  font-size: 0.8rem;
  color: rgba(248,250,252,0.3);
}
.footer-copy a { color: var(--clr-purple-bright); text-decoration: none; }
.footer-copy a:hover { text-decoration: underline; }

/* ---- ANIMATIONS ---- */
@keyframes fade-up {
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fade-in {
  to { opacity: 1; }
}

/* ---- SCROLL REVEAL ---- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
  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; }
.reveal-delay-5 { transition-delay: 0.5s; }
.reveal-delay-6 { transition-delay: 0.6s; }

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
  .navbar { padding: 1rem 2rem; }
  .hero { padding: 8rem 2rem 4rem; }
  .energy-orb-wrapper { display: none; }
  .about-section, .energy-section, .quote-section { padding-left: 2rem; padding-right: 2rem; }
  .about-cards { grid-template-columns: repeat(2, 1fr); }
  .energy-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  /* Navbar Mobile - ULTIMATE SIMPLIFICATION */
  .navbar { 
    padding: 0.4rem 0.6rem !important; 
    height: 56px !important;
    justify-content: space-between !important;
    gap: 0 !important;
  }
  .nav-logo { 
    max-width: 50% !important;
    gap: 0.35rem !important;
  }
  .logo-img { 
    height: 24px !important;
  }
  .logo-stack {
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
  .logo-institute { display: none !important; }
  .logo-text { 
    font-size: 0.7rem !important; 
    font-weight: 700 !important;
    line-height: 1 !important;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .nav-links { display: none !important; }
  .nav-cta { 
    font-size: 0.68rem !important; 
    padding: 0.4rem 0.65rem !important; 
    border-radius: 4px !important; /* Slightly more square for space */
    white-space: nowrap !important;
  }

  /* Hero Mobile */
  .hero {
    padding: 5rem 1rem 2.5rem !important;
    min-height: auto !important;
  }
  .hero-content {
    margin-top: 0 !important;
  }
  .hero-title {
    margin-top: 0 !important;
  }
  .hero-content {
    gap: 0;
  }
  .hero-badge { 
    font-size: 0.6rem; 
    padding: 0.3rem 0.7rem;
    margin-bottom: 1rem;
    max-width: 90%;
    text-wrap: balance;
  }
  .hero-title { 
    font-size: clamp(1.6rem, 10vw, 2.2rem); 
    margin-bottom: 1rem;
    line-height: 1.15;
    text-wrap: balance;
  }
  .hero-subtitle { 
    font-size: 0.9rem; 
    margin-bottom: 1.8rem;
    line-height: 1.6;
    max-width: 100%;
  }
  .hero-actions { 
    justify-content: center; 
    width: 100%;
    margin-bottom: 2rem;
  }
  .btn-primary { 
    width: auto;
    min-width: 200px;
    font-size: 0.85rem;
    padding: 0.75rem 1.4rem;
  }

  /* Stats row mobile - FORCE 3 COLS */
  .stats-row { 
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    width: 100%; 
    gap: 0.5rem;
    align-items: flex-start;
  }
  .stat-item { 
    min-width: 0;
    padding: 0.5rem 0;
  }
  .stat-icon { font-size: 1.3rem; margin-bottom: 0.4rem; }
  .stat-label { 
    font-size: 0.6rem; 
    line-height: 1.3;
    white-space: normal;
    display: block;
  }
  .stat-divider { display: none; }

  /* Sections mobile */
  .about-section, .energy-section, .quote-section { padding: 4.5rem 1.2rem; }
  .section-title { font-size: 1.75rem; }
  .section-subtitle { font-size: 0.95rem; margin-bottom: 2.5rem; }
  
  .about-cards, .energy-grid { 
    grid-template-columns: 1fr; 
    width: 100%; 
    gap: 1.25rem;
  }
  .about-card, .energy-item { 
    width: 100%; 
    padding: 1.5rem; 
    margin: 0;
  }

  .main-quote { font-size: 1.1rem; line-height: 1.8; }
  .footer { padding: 2.5rem 1.2rem; }
  .footer-logo { flex-direction: column; text-align: center; }
  .footer-logo img { height: 40px; }
  .footer-tagline { font-size: 0.8rem; margin-top: 0.5rem; }

  .scroll-indicator, .energy-orb-wrapper { display: none; }
}

@media (max-width: 420px) {
  .hero-title { font-size: 1.85rem; }
  .hero-badge { font-size: 0.6rem; }
  .logo-text { max-width: 120px; }
}