/* ===========================================================
   LUNG CANCER PREDICTION — DARK NEON ANIMATED THEME
   =========================================================== */

/* 🌈 Animated Background */
body, html {
  margin: 0;
  font-family: 'Poppins', sans-serif;
  background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
  color: #e0f7fa;
  overflow-x: hidden;
  height: 100vh;
  scroll-behavior: smooth;
}

.animated-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 20% 20%, rgba(0,255,255,0.2), transparent 70%),
              radial-gradient(circle at 80% 80%, rgba(255,0,255,0.2), transparent 70%);
  animation: moveGradient 15s infinite alternate ease-in-out;
  z-index: -1;
  pointer-events: none;
}

@keyframes moveGradient {
  0% { background-position: 0 0, 100% 100%; }
  100% { background-position: 100% 0, 0 100%; }
}

/* ===========================================================
   🔄 LOADER
   =========================================================== */
#loader-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 32, 39, 0.98);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  transition: opacity 0.5s ease;
}

.loader-spinner {
  width: 70px;
  height: 70px;
  border: 6px solid rgba(255, 255, 255, 0.15);
  border-top: 6px solid #00c6ff;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  box-shadow: 0 0 15px #00c6ff;
}

@keyframes spin {
  100% { transform: rotate(360deg); }
}

.loader-text {
  margin-top: 20px;
  color: #aeefff;
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.5px;
  animation: fadeIn 1.5s infinite alternate;
}

/* ===========================================================
   🧩 MAIN FORM CONTAINER
   =========================================================== */
.main-box {
  background: rgba(255, 255, 255, 0.08);
  padding: 40px;
  border-radius: 25px;
  box-shadow: 0 0 35px rgba(0, 255, 255, 0.15);
  max-width: 900px;
  margin: 60px auto;
  backdrop-filter: blur(12px);
  position: relative;
  overflow: hidden;
  z-index: 2;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}
.main-box:hover {
  transform: translateY(-4px);
  box-shadow: 0 0 45px rgba(0, 255, 255, 0.25);
}

/* Flowing border light effect */
.main-box::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 25px;
  padding: 2px;
  background: linear-gradient(60deg, #00c6ff, #0072ff, #ff00ff);
  background-size: 300% 300%;
  animation: borderFlow 4s linear infinite;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  pointer-events: none;
}

@keyframes borderFlow {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}

/* ===========================================================
   🧭 HEADINGS
   =========================================================== */
h1.title {
  font-family: 'Lora', serif;
  text-align: center;
  color: #00e5ff;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: 1px;
  position: relative;
  animation: fadeInUp 1s ease-out;
}
h1.title::after {
  content: "";
  display: block;
  width: 70px;
  height: 4px;
  background: linear-gradient(90deg, #00c6ff, #ff00ff);
  margin: 10px auto;
  border-radius: 2px;
  animation: drawLine 1.5s ease-out forwards;
}

.subtitle {
  text-align: center;
  color: #b2ebf2;
  font-size: 0.95rem;
  margin-bottom: 25px;
}

/* ===========================================================
   🔠 FORM ELEMENTS
   =========================================================== */
label {
  display: block;
  margin-top: 15px;
  font-weight: 600;
  color: #e0f7fa;
  font-size: 1em;
}

input, select {
  width: 100%;
  border: none;
  border-radius: 10px;
  background: rgba(255,255,255,0.1);
  color: #fff;
  padding: 12px;
  margin-top: 5px;
  font-size: 0.95em;
  transition: all 0.3s ease;
}

input:focus, select:focus {
  outline: none;
  background: rgba(255,255,255,0.15);
  box-shadow: 0 0 10px #00e5ff;
}

/* Grid Layout */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 15px;
}

/* ===========================================================
   🌟 BUTTONS
   =========================================================== */
.glow-btn {
  width: 100%;
  font-weight: bold;
  background: linear-gradient(45deg, #00c6ff, #0072ff);
  border: none;
  border-radius: 10px;
  padding: 14px;
  margin-top: 25px;
  color: #fff;
  letter-spacing: 0.5px;
  transition: all 0.4s ease;
  box-shadow: 0 0 15px rgba(0, 198, 255, 0.4);
  cursor: pointer;
}
.glow-btn:hover {
  box-shadow: 0 0 25px #00c6ff;
  transform: scale(1.05);
  background: linear-gradient(45deg, #0072ff, #ff00ff);
}

/* ===========================================================
   🧠 RESULT CARD
   =========================================================== */
.result-card {
  margin-top: 25px;
  padding: 20px;
  border-radius: 12px;
  font-weight: bold;
  text-align: center;
  color: white;
  animation: fadeIn 0.8s ease-in-out;
}

.risk-low { background: rgba(76, 175, 80, 0.3); border: 2px solid #4caf50; }
.risk-medium { background: rgba(255, 193, 7, 0.3); border: 2px solid #ffc107; }
.risk-high { background: rgba(211, 47, 47, 0.3); border: 2px solid #d32f2f; box-shadow: 0 0 20px rgba(211, 47, 47, 0.4); }

.hidden { display: none; }

/* ===========================================================
   ⚡ ANIMATIONS
   =========================================================== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes drawLine {
  from { width: 0; }
  to { width: 70px; }
}
@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

/* ===========================================================
   📱 RESPONSIVE DESIGN
   =========================================================== */
@media (max-width: 768px) {
  .main-box {
    padding: 25px;
  }
  h1.title {
    font-size: 1.6em;
  }
}