/* ---------- Basic reset ---------- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* ---------- Global styles ---------- */
body {
  font-family: 'Segoe UI', sans-serif;
  color: white;
  background: black url('https://cdn.pixabay.com/photo/2017/08/30/02/47/stars-2695569_1280.jpg') repeat center center fixed;
  background-size: cover;
}

html {
  scroll-behavior: smooth;
}

h1, h2, h3 {
  font-family: 'Segoe UI', serif;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 1px;
}


/* ---------- Navigation bar ---------- */
/* fixed blue bar */
nav {
  background-color: #2a7abe;
  padding: 1rem 0;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

/* hamburger icon */
.menu-toggle {
  display: none;
  font-size: 1.8rem;
  color: white;
  cursor: pointer;
  position: absolute;
  right: 1.5rem;
  top: 50%;
  transform: translateY(-50%);
}

/* main link list */
.nav-links {
  list-style: none;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  margin: 0;
  padding: 0;
}

.nav-links a {
  text-decoration: none;
  color: white;
  font-weight: bold;
  letter-spacing: 0.5px;
  transition: color 0.3s;
  white-space: nowrap;
}

.nav-links a:hover {
  color: #d1e8ff;
}

/* 📱 responsive version */
@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }

  .nav-links {
    display: none;
    flex-direction: column;
    align-items: center;
    background-color: #2a7abe;
    position: absolute;
    top: 100%; /* appears just below bar */
    left: 0;
    width: 100%;
    gap: 1rem;
    padding: 1rem 0;
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.3);
  }

  .nav-links.show {
    display: flex; /* reveal when toggled */
  }
}

/* push page content below fixed bar */
body {
  padding-top: 80px;
}
html {
  scroll-behavior: smooth; /* nice smooth scroll */
}

section {
  scroll-margin-top: 80px; /* same height as your fixed nav */
}


/* ---------- Hero section ---------- */
.hero {
  text-align: center;
  padding: 8rem 2rem 6rem 2rem;
  color: white;
  background: black url('https://cdn.pixabay.com/photo/2016/09/08/21/46/orion-1655655_1280.jpg') no-repeat center center;
  background-size: cover;
}

.hero h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: white;
  letter-spacing: 1px;
}

.hero h1 {
  font-size: 4rem;
  color: #2a7abe;
  font-weight: 900;
  margin-bottom: 20px;
  font-family: 'Segoe UI', serif;
}

.hero p {
  font-size: 1.1rem;
  max-width: 700px;
  margin: 10px auto;
  line-height: 1.6;
  color: #e0e0e0;
}

/* Responsive hero text */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 3rem;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 2.2rem;
  }
}

/* ---------- How to Help Section ---------- */
.info-section {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 2rem;
  background-color: #ffffff;
  color: #000;
  padding: 6rem 2rem 4rem 2rem;
}

.info-text {
  flex: 1 1 400px;
  max-width: 500px;
  padding: 1rem 2rem;
}

.info-text h2 {
  color: #2a7abe;
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.3;
  margin: 1rem 0;
  text-transform: uppercase;

  /* glowing text effect */
  text-shadow: 
    0 0 5px #a9d6ff,
    0 0 10px #7fc4ff,
    0 0 20px #7fc4ff,
    0 0 30px #4b9eff;
}

.info-text p {
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 1rem;
}

.info-image {
  flex: 1 1 300px;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1rem;
}

.info-image img {
  width: 80%;
  max-width: 600px;
  border-radius: 25px; /* smooth edges */
  object-fit: cover;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.25);
}

/* Responsive spacing */
@media (max-width: 768px) {
  .info-section {
    flex-direction: column;
    padding: 4rem 1.5rem 2rem 1.5rem;
  }
}

/* ---------- Ways to Stop Light Pollution Section ---------- */
.stop-section {
  background-color: #000;
  color: white;
  text-align: center;
  padding: 6rem 2rem;
  width: 100%;
}

.stop-section h2 {
  font-size: 2.5rem;
  color: #2a7abe;
  margin-bottom: 3rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 1px;
 text-shadow: 0 0 10px #1f5d94, 0 0 20px #1f5d94;
}

.stop-container {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 3rem;
}

.stop-card {
  background: transparent;
  border: none;
  border-radius: 10px;
  max-width: 300px;
  padding: 1.5rem;
  transition: transform 0.3s, box-shadow 0.3s;
}

.stop-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 6px 25px rgba(42, 122, 190, 0.6);
}

.stop-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 10px;
  margin-bottom: 1rem;
  filter: grayscale(100%);
  transition: filter 0.3s, transform 0.3s;
}

.stop-card:hover img {
  filter: grayscale(0%);
  transform: scale(1.03);
}

.stop-card h3 {
  font-size: 1.1rem;
  color: #fff;
  font-weight: bold;
  margin-bottom: 0.5rem;
}

.stop-card p {
  font-size: 0.95rem;
  color: #ccc;
  line-height: 1.5;
}

/* Responsive layout for stop section */
@media (max-width: 900px) {
  .stop-container {
    flex-direction: column;
    align-items: center;
  }
}

/* ---------- Maps Section ---------- */
.maps-section {
  background-color: #2a7abe;
  color: white;
  text-align: center;
  padding: 6rem 2rem;
}

.maps-section h2 {
  font-size: 2.5rem;
  color: #ffffff;
  margin-bottom: 1rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 1px;
  text-shadow: 0 0 8px rgba(255, 255, 255, 0.7),
               0 0 15px rgba(200, 230, 255, 0.5);
}

.maps-section p {
  max-width: 700px;
  margin: 0 auto 2rem auto;
  color: #e5f1ff;
  font-size: 1rem;
  line-height: 1.6;
}

#map {
  height: 500px;
  width: 90%;
  margin: 0 auto;
  border-radius: 10px;
  box-shadow: 0 4px 25px rgba(0, 0, 0, 0.4);
  border: 3px solid #ffffff33;
}
#toggleBtn {
  background-color: #ffffff;
  color: #2a7abe;
  border: none;
  padding: 0.8rem 1.5rem;
  border-radius: 6px;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-bottom: 1.5rem;
}

#toggleBtn:hover {
  background-color: #2a7abe;
  color: white;
  transform: scale(1.05);
}
/* Light Check Section */

.light-check-section {
  background-color: black;
  color: white;
  text-align: center;
  padding: 6rem 2rem;
}

.light-check-section h2 {
  font-size: 2.5rem;
  color: #2a7abe;
  text-transform: uppercase;
  margin-bottom: 1rem;
text-shadow: 0 0 10px #1f5d94, 0 0 20px #1f5d94;
}

.light-check-section p {
  max-width: 700px;
  margin: 0 auto 1rem;
  font-size: 1rem;
  color: #d9e8ff;
}

.check-container button {
  background-color: #2a7abe;
  border: none;
  color: white;
  padding: 0.8rem 1.5rem;
  font-size: 1.1rem;
  border-radius: 10px;
  cursor: pointer;
  margin-top: 1rem;
  transition: background 0.3s ease;
}

.check-container button:hover {
  background-color: #2a7abe;
}

#lightValue {
  font-size: 1.3rem;
  margin-top: 1.5rem;
  color: #aee0ff;
  text-shadow: 0 0 8px #78c8ff;
}
/* Gauge styling */
.gauge {
  position: relative;
  width: 200px;
  height: 200px;
  margin: 2rem auto;
}

.gauge svg {
  transform: rotate(-90deg);
  width: 100%;
  height: 100%;
}

.circle-bg {
  fill: none;
  stroke: #222;
  stroke-width: 2.8;
}

.circle {
  fill: none;
  stroke-width: 2.8;
  stroke-linecap: round;
  stroke: #2a7abe;
  transition: stroke-dasharray 0.5s, stroke 0.5s;
}

.gauge-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 1.5rem;
  font-weight: bold;
  color: #78c8ff;
  text-shadow: 0 0 10px #2a7abe;
}

/* Fun Facts Section */
.fun-facts-section {
  background-color: #5aa6d6;
  color: white;
  text-align: center;
  padding: 6rem 2rem;
}

.fun-facts-section h2 {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 2rem;
  color: white;
  text-transform: uppercase;
  letter-spacing: 1px;
    text-shadow: 0 0 8px rgba(255, 255, 255, 0.7),
               0 0 15px rgba(200, 230, 255, 0.5);
}

.fact {
  margin-bottom: 2rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.fact h3 {
  font-weight: 800;
  font-size: 1.2rem;
  text-transform: uppercase;
  color: white;
}

.fact p {
  font-size: 1rem;
  color: #e8f3ff;
  margin-top: 0.5rem;
}
.fact {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease-in-out;
}

.fact.visible {
  opacity: 1;
  transform: translateY(0);
}
.badges-section {
  background-color: #5aa4d8;
  color: white;
  text-align: center;
  padding: 5rem 2rem;
}

.badges-section h2 {
  font-size: 3rem;
  font-weight: 900;
  margin-bottom: 2rem;
  text-transform: uppercase;
  letter-spacing: 1px;
      text-shadow: 0 0 8px rgba(255, 255, 255, 0.7),
               0 0 15px rgba(200, 230, 255, 0.5);
}

.badges-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 3rem;
}

.badge {
  width: 200px;
  text-align: center;
}

.badge img {
  width: 100%;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  border: 6px solid #fff;
  box-shadow: 0 0 15px rgba(255, 255, 255, 0.3);
  transition: transform 0.3s, box-shadow 0.3s;
}

.badge img:hover {
  transform: scale(1.1);
  box-shadow: 0 0 25px rgba(255, 255, 255, 0.6);
}

.badge h3 {
  margin-top: 1rem;
  font-size: 1.1rem;
  font-weight: 800;
}

.badge p {
  font-size: 0.9rem;
  color: #f5f5f5;
}
  .locked {
  filter: grayscale(100%) brightness(0.5);
  opacity: 0.6;
  transition: all 0.3s ease;
}

.unlocked {
  filter: none;
  opacity: 1;
  transform: scale(1.05);
  box-shadow: 0 0 25px rgba(255, 255, 255, 0.7);
  transition: all 0.4s ease;
}
.badge-popup {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(20, 20, 20, 0.95);
  color: white;
  padding: 2rem;
  border-radius: 15px;
  text-align: center;
  z-index: 1000;
  box-shadow: 0 0 20px #2a7abe;
  animation: fadeIn 0.3s ease-in-out;
}

.badge-popup.show {
  display: block;
}

.badge-popup img {
  width: 100px;
  margin: 1rem 0;
}

.resources-section {
  background-color: #5aa4d8;
  color: white;
  text-align: center;
  padding: 4rem 2rem;
  
}

.resources-section h2 {
  font-size: 3rem;
  font-weight: 900;
  margin-bottom: 3rem;
  text-transform: uppercase;
    text-shadow: 0 0 8px rgba(255, 255, 255, 0.7),
               0 0 15px rgba(200, 230, 255, 0.5);
}

.resources-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 4rem;
}

.column {
  flex: 1;
  min-width: 250px;
  max-width: 300px;
}

.column h3 {
  font-size: 1.2rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.column a {
  color: white;
  text-decoration: underline;
  display: block;
  margin: 0.5rem 0;
  transition: color 0.3s;
}

.column a:hover {
  color: #d1e8ff;
}

.column p {
  color: #f8f8f8;
  margin: 0.5rem 0;
}
/* 🎖️ Badge Popup Styles */
.badge-popup {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s ease;
  z-index: 2000;
}

.badge-popup.show {
  opacity: 1;
  pointer-events: auto;
}

.popup-content {
  background: radial-gradient(circle, #2a7abe, #0b1e3f);
  color: white;
  text-align: center;
  padding: 2rem 3rem;
  border-radius: 20px;
  box-shadow: 0 0 30px #6ec6ff;
  animation: popIn 0.5s ease forwards;
}

.popup-content h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
  text-shadow: 0 0 15px #78c8ff;
}

.popup-content img {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  margin: 1rem 0;
  border: 4px solid #fff;
  box-shadow: 0 0 25px #ffffffaa;
}

.popup-content p {
  font-size: 1.2rem;
  color: #cce8ff;
}

@keyframes popIn {
  0% { transform: scale(0.5); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}
/* 🎖️ Badge Popup Styles */
.badge-popup {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s ease;
  z-index: 2000;
}

.badge-popup.show {
  opacity: 1;
  pointer-events: auto;
}

.popup-content {
  background: radial-gradient(circle, #2a7abe, #0b1e3f);
  color: white;
  text-align: center;
  padding: 2rem 3rem;
  border-radius: 20px;
  box-shadow: 0 0 30px #6ec6ff;
  animation: popIn 0.5s ease forwards;
}

.popup-content h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
  text-shadow: 0 0 15px #78c8ff;
}

.popup-content img {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  margin: 1rem 0;
  border: 4px solid #fff;
  box-shadow: 0 0 25px #ffffffaa;
}

.popup-content p {
  font-size: 1.2rem;
  color: #cce8ff;
}

@keyframes popIn {
  0% { transform: scale(0.5); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}
.ai-chat-section {
  background: #0b0b0b;
  color: white;
  text-align: center;
  padding: 5rem 2rem;
}

.chatbox {
  max-width: 600px;
  margin: 0 auto;
  border: 2px solid #2a7abe;
  border-radius: 15px;
  padding: 1rem;
  background: rgba(20, 20, 20, 0.8);
  box-shadow: 0 0 20px #2a7abe55;
}

#chat-log {
  height: 300px;
  overflow-y: auto;
  text-align: left;
  padding: 10px;
  margin-bottom: 1rem;
}

.chat-input {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
}

.chat-input input {
  flex: 1;
  padding: 0.8rem;
  border-radius: 10px;
  border: none;
  outline: none;
}

.chat-input button {
  background-color: #2a7abe;
  color: white;
  border: none;
  border-radius: 10px;
  padding: 0.8rem 1.2rem;
  cursor: pointer;
  font-weight: bold;
}
/* Chat bubble styling */
.user-msg, .ai-msg {
  display: inline-block;
  margin: 8px;
  padding: 10px 14px;
  border-radius: 16px;
  max-width: 70%;
  line-height: 1.4;
  word-wrap: break-word;
  animation: fadeIn 0.2s ease-in;
}

.user-msg {
  background-color: #2a7abe;
  color: white;
  align-self: flex-end;
  text-align: right;
  border-bottom-right-radius: 0;
}

.ai-msg {
  background-color: #333;
  color: #f1f1f1;
  align-self: flex-start;
  text-align: left;
  border-bottom-left-radius: 0;
}

/* Smooth message fade-in */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Scrollable chat area */
#chat-log {
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  padding: 1rem;
  border-radius: 8px;
  background-color: #1e1e1e;
  width: 90%;
  max-width: 600px;
  height: 400px;
}

/* Inner gray chat area */
#chat-log {
  background-color: #1c1c1c; /* lighter gray */
  width: 100%;
  height: 400px;
  overflow-y: auto;
  border-radius: 10px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  box-shadow: inset 0 0 8px rgba(0, 0, 0, 0.5);
}

/* Input area stays below the chat */
.chat-input {
  margin-top: 1rem;
  width: 100%;
  display: flex;
  gap: 0.5rem;
}