/* ===== RESET ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: system-ui, -apple-system, sans-serif;
}

body {
  background: #0f172a;
  color: #e5e7eb;
  line-height: 1.6;
}

/* ===== NAVBAR ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;

  display: flex;
  justify-content: space-between;
  align-items: center;

  padding: 14px 28px;
  background: #020617;
  border-bottom: 1px solid #1e293b;
}

.logo {
  font-size: 22px;
  color: #22c55e;
}

/* nav links */
.navbar nav a {
  margin-left: 20px;
  text-decoration: none;
  color: #38bdf8;
  font-weight: 500;
  transition: 0.25s ease;
}

.navbar nav a:hover {
  color: #22c55e;
}

/* ===== HERO ===== */
.hero {
  min-height: 70vh;

  display: grid;
  place-content: center;
  text-align: center;

  padding: 40px 20px;

  background: linear-gradient(135deg, #22c55e, #0ea5e9);
  color: white;
}

.hero h2 {
  font-size: 42px;
  margin-bottom: 10px;
}

.hero p {
  font-size: 18px;
  opacity: 0.9;
}

/* ===== GENERAL SECTIONS ===== */
/* ===== INTRO VIDEO ===== */

.intro-video {
  width: 100%;
  max-width: 1100px;
  margin: 50px auto;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 15px 40px rgba(0, 255, 150, 0.12);
}

.intro-video video {
  width: 100%;
  height: auto;
  display: block;
}

.intro-image {
  text-align: center;
  margin: 50px auto 30px;
}

.intro-image img {
  width: 90%;
  max-width: 1000px;
  border-radius: 14px;
  box-shadow: 0 12px 35px rgba(0, 255, 150, 0.12);
}

.section {
  padding: 70px 20px;
  max-width: 1100px;
  margin: auto;
  text-align: center;
}

.section h2 {
  font-size: 30px;
  margin-bottom: 20px;
  color: #22c55e;
}

.section p {
  max-width: 800px;
  margin: auto;
}

.chart-box {
  margin: 60px auto;
  max-width: 900px;
  text-align: center;
}

.chart-img {
  width: 70%;
  border-radius: 14px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.4);
}

/* ===== GRID FOR ENERGY TYPES ===== */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 20px;
  margin-top: 30px;
}

/* Section heading */
.section-title {
  text-align: center;
  font-size: 42px;
  font-weight: 700;
  color: #22c55e;
  margin-bottom: 10px;
}

/* Subtitle */
.section-subtitle {
  text-align: center;
  color: #9ca3af;
  font-size: 18px;
  margin-bottom: 60px;
}

/* spacing from navbar */
.types-section {
  padding-top: 60px;
}

.infographic-box {
  margin: 80px auto;
  max-width: 1100px;
  text-align: center;
}

.infographic-img {
  width: 100%;
  border-radius: 18px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.6);
  transition: transform 0.4s ease;
}

.infographic-img:hover {
  transform: scale(1.02);
}

.section-title {
  text-align: center;
  font-size: 34px;
  font-weight: 700;
  margin: 70px 0 45px;
  background: linear-gradient(90deg, #22c55e, #38bdf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.card-link {
  text-decoration: none;
  color: inherit;
  display: block;
}


/* cards */
.card {
  display: block;
  text-decoration: none;
  color: white;

  background: #020617;
  border: 1px solid #1e293b;

  padding: 28px 16px;
  border-radius: 14px;

  font-size: 18px;
  transition: 0.25s ease;
}

.card:hover {
  transform: translateY(-6px);
  background: #0ea5e9;
  border-color: #0ea5e9;
}

/* ===== BENEFITS LIST ===== */
.section ul {
  list-style: none;
  margin-top: 20px;
}

.section li {
  margin: 10px 0;
}

/* ===== FOOTER ===== */
.footer {
  background: #020617;
  border-top: 1px solid #1e293b;
  padding: 30px 20px;
  text-align: center;
  margin-top: 60px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {

  .hero h2 {
    font-size: 30px;
  }

  .navbar {
    flex-direction: column;
    gap: 10px;
  }

  .navbar nav a {
    margin: 0 10px;
  }
}

/* ===== LIGHT MODE ===== */
body.light {
  background: #f8fafc;
  color: #0f172a;
}

body.light .navbar,
body.light .footer,
body.light .card {
  background: #ffffff;
  color: #0f172a;
  border-color: #e2e8f0;
}


/* ===== FADE ANIMATION ===== */
.fade {
  opacity: 0;
  transform: translateY(40px);
  transition: 0.8s ease;
}

.fade.show {
  opacity: 1;
  transform: translateY(0);
}


/* ===== DARK MODE BUTTON ===== */
.dark-btn {
  cursor: pointer;
  background: #22c55e;
  border: none;
  padding: 8px 14px;
  border-radius: 8px;
  color: white;
  font-weight: 600;
}

/* ===== INFO GRID ===== */
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

/* ===== INFO CARD ===== */
.info-card {
  background: #020617;
  border: 1px solid #1e293b;
  border-radius: 14px;
  padding: 24px;
  text-align: left;
  transition: 0.25s ease;
}

.info-card h3 {
  color: #22c55e;
  margin-bottom: 10px;
}

.info-card:hover {
  transform: translateY(-6px);
  border-color: #22c55e;
}

/* ===== TYPES GRID ===== */

.types-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-top: 40px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}
@media (max-width: 900px) {
  .types-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 500px) {
  .types-grid {
    grid-template-columns: 1fr;
  }
}


/* ===== ENERGY CARD ===== */

.energy-card {
  background: rgba(255, 255, 255, 0.03);
  border-radius: 18px;
  padding: 30px 20px;
  text-align: center;
  transition: all 0.35s ease;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

/* icon */
.energy-card img {
  width: 90px;
  transition: transform 0.35s ease, filter 0.35s ease;
}

/* text hidden initially */
.energy-card h3 {
  margin-top: 18px;
  opacity: 0.7;
  transform: translateY(8px);
  transition: all 0.35s ease;
}

/* ===== HOVER EFFECT ===== */

.energy-card:hover {
  transform: translateY(-8px) scale(1.04);
  box-shadow: 0 12px 30px rgba(0, 255, 170, 0.15);
}

/* icon zoom + glow */
.energy-card:hover img {
  transform: scale(1.18);
  filter: drop-shadow(0 0 12px rgba(0, 255, 170, 0.6));
}

/* text reveal */
.energy-card:hover h3 {
  opacity: 1;
  transform: translateY(0);
}


/* ====== CSS for bio.html ======= */
/* ===== MEDIA ===== */
.full-img {
  width: 100%;
  border-radius: 12px;
}

.media {
  width: 80%;
  max-width: 800px;
  border-radius: 12px;
}

/* ===== TEXT LAYOUT ===== */
.text-section {
  text-align: left;
  max-width: 900px;
}

.side-img {
  float: right;
  width: 35%;
  margin: 0 0 20px 20px;
  border-radius: 12px;
}

/* ===== HOME BUTTON ===== */
.home-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: #22c55e;
  font-weight: 600;
}

.home-btn img {
  width: 40px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .side-img {
    float: none;
    width: 100%;
    margin: 20px 0;
  }

  .media {
    width: 100%;
  }
}
/* ===== BIOMASS GREEN TONE ===== */

/* subtle green hero gradient */
.hero {
  background: linear-gradient(135deg, #16a34a 0%, #065f46 50%, #020617 100%);
}

/* headings glow slightly green */
.section h2,
.logo {
  color: #22c55e;
  text-shadow: 0 0 8px rgba(34, 197, 94, 0.25);
}

/* paragraph readability with green tint */
.text-section p {
  color: #d1fae5;
}

/* soft green border glow on images & video */
.full-img,
.media,
.side-img {
  border: 1px solid rgba(34, 197, 94, 0.25);
  box-shadow: 0 0 20px rgba(34, 197, 94, 0.08);
}

/* home button greener */
.home-btn {
  color: #4ade80;
}

.home-btn:hover {
  color: #22c55e;
}

/* ===== GEOTHERMAL THEME ===== */

.geo-theme .hero {
  background: linear-gradient(135deg, #b45309 0%, #78350f 50%, #020617 100%);
}

.geo-theme .logo,
.geo-theme .section h2 {
  color: #f59e0b;
  text-shadow: 0 0 10px rgba(245, 158, 11, 0.3);
}

.geo-theme .text-section p {
  color: #fde68a;
}

.geo-theme .full-img,
.geo-theme .media,
.geo-theme .side-img {
  border: 1px solid rgba(245, 158, 11, 0.3);
  box-shadow: 0 0 20px rgba(245, 158, 11, 0.12);
}

.geo-theme .home-btn {
  color: #fbbf24;
}

.geo-theme .home-btn:hover {
  color: #f59e0b;
}

/* ===== HYDRO THEME ===== */

.hydro-theme .hero {
  background: linear-gradient(135deg, #06b6d4 0%, #075985 50%, #020617 100%);
}

.hydro-theme .logo,
.hydro-theme .section h2 {
  color: #22d3ee;
  text-shadow: 0 0 10px rgba(34, 211, 238, 0.35);
}

.hydro-theme .text-section p {
  color: #cffafe;
}

.hydro-theme .full-img,
.hydro-theme .media,
.hydro-theme .side-img {
  border: 1px solid rgba(34, 211, 238, 0.35);
  box-shadow: 0 0 22px rgba(34, 211, 238, 0.15);
}

.hydro-theme .home-btn {
  color: #67e8f9;
}

.hydro-theme .home-btn:hover {
  color: #22d3ee;
}

/* ===== SOLAR THEME ===== */

.solar-theme .hero {
  background: linear-gradient(135deg, #f97316 0%, #b45309 50%, #020617 100%);
}

.solar-theme .logo,
.solar-theme .section h2 {
  color: #fb923c;
  text-shadow: 0 0 10px rgba(251, 146, 60, 0.35);
}

.solar-theme .text-section p {
  color: #ffedd5;
}

.solar-theme .full-img,
.solar-theme .media,
.solar-theme .side-img {
  border: 1px solid rgba(251, 146, 60, 0.35);
  box-shadow: 0 0 22px rgba(251, 146, 60, 0.15);
}

.solar-theme .home-btn {
  color: #fdba74;
}

.solar-theme .home-btn:hover {
  color: #fb923c;
}

/* ===== TIDAL THEME ===== */

.tidal-theme .hero {
  background: linear-gradient(135deg, #2563eb 0%, #4f46e5 50%, #020617 100%);
}

.tidal-theme .logo,
.tidal-theme .section h2 {
  color: #60a5fa;
  text-shadow: 0 0 10px rgba(96, 165, 250, 0.35);
}

.tidal-theme .text-section p {
  color: #dbeafe;
}

.tidal-theme .full-img,
.tidal-theme .media,
.tidal-theme .side-img {
  border: 1px solid rgba(96, 165, 250, 0.35);
  box-shadow: 0 0 22px rgba(96, 165, 250, 0.15);
}

.tidal-theme .home-btn {
  color: #93c5fd;
}

.tidal-theme .home-btn:hover {
  color: #60a5fa;
}

/* ===== WIND THEME ===== */

.wind-theme .hero {
  background: linear-gradient(135deg, #10b981 0%, #06b6d4 50%, #0b2288 100%);
}

.wind-theme .logo,
.wind-theme .section h2 {
  color: #34d399;
  text-shadow: 0 0 10px rgba(52, 211, 153, 0.35);
}

.wind-theme .text-section p {
  color: #d1fae5;
}

.wind-theme .full-img,
.wind-theme .media,
.wind-theme .side-img {
  border: 1px solid rgba(34, 211, 238, 0.35);
  box-shadow: 0 0 22px rgba(34, 211, 238, 0.15);
}

.wind-theme .home-btn {
  color: #67e8f9;
}

.wind-theme .home-btn:hover {
  color: #22d3ee;
}

/* SOLAR */
.energy-card.solar:hover {
  box-shadow: 0 12px 30px rgba(255, 130, 28, 0.35);
}
.energy-card.solar:hover img {
  filter: drop-shadow(0 0 14px rgba(251, 111, 60, 0.8));
}

/* HYDRO */
.energy-card.hydro:hover {
  box-shadow: 0 12px 30px rgba(56, 189, 248, 0.35);
}
.energy-card.hydro:hover img {
  filter: drop-shadow(0 0 14px rgba(56, 189, 248, 0.8));
}

/* WIND */
.energy-card.wind:hover {
  box-shadow: 0 12px 30px rgba(52, 211, 153, 0.35);
}
.energy-card.wind:hover img {
  filter: drop-shadow(0 0 14px rgba(52, 211, 153, 0.8));
}

/* GEOTHERMAL */
.energy-card.geo:hover {
  box-shadow: 0 12px 30px rgba(245, 158, 11, 0.35);
}
.energy-card.geo:hover img {
  filter: drop-shadow(0 0 14px rgba(245, 158, 11, 0.8));
}

/* BIOMASS */
.energy-card.biomass:hover {
  box-shadow: 0 12px 30px rgba(34, 197, 94, 0.35);
}
.energy-card.biomass:hover img {
  filter: drop-shadow(0 0 14px rgba(34, 197, 94, 0.8));
}

/* TIDAL */
.energy-card.tidal:hover {
  box-shadow: 0 12px 30px rgba(99, 102, 241, 0.35);
}
.energy-card.tidal:hover img {
  filter: drop-shadow(0 0 14px rgba(99, 102, 241, 0.8));
}

/* ===== INSIGHT SECTION ===== */

.insight-section {
  background: transparent;   /* remove visible block */
  padding: 80px 20px;
  text-align: center;
}

/* Quote image — bigger and clean */
.quote-box img {
  width: 100%;
  max-width: 1000px;   /* increased size */
  height: auto;
  display: block;
  margin: 0 auto 80px;
}

/* Map image */
.map-box img {
  width: 100%;
  max-width: 650px;   /* slightly bigger */
  height: auto;
  display: block;
  margin: 0 auto 20px;
  opacity: 0.95;
}

.map-box h2 {
  font-family: "Times New Roman", serif;
  font-style: italic;
  font-size: 36px;
  color: #e5e7eb;
}
/* Quote section spacing */
.quote-box {
  margin: 80px auto;        /* space top & bottom */
  text-align: center;
}

/* Image sizing */
.quote-img {
  width: 75%;
  max-width: 900px;
  height: auto;
  display: block;
  margin: 0 auto;
}