@font-face {
  font-family: 'GothNerd'; 
  src: url('../fonts/ScienceGothic.ttf') format('truetype'); 
}

@font-face {
  font-family: 'SpaceLetters'; 
  src: url('../fonts/Orbitron-Bold.ttf') format('truetype'); 
}


body {
  color: #ffffff;
  min-height: 100vh;
  overflow-x: hidden;
}

h1 {
  color: #ffffff;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 1rem;
  max-width: 900px;
  margin-top: 5px;
}

h2 {
  text-align: center;
  color: var(--White);
  font-family: 'GothNerd', sans-serif;
  font-size: 2.5rem;
  margin: 80px auto 20px;
  text-shadow: 0 0 20px var(--ParticlePink);
  max-width: 900px;
  padding: 0 20px;
}

h3 {
  color: var(--White);
  font-family: 'GothNerd', sans-serif;
  font-size: 1.7rem;
  margin-bottom: 0.5rem;
}

h4 {
  color: var(--White);
  font-family: 'GothNerd', sans-serif;
  font-size: 1.3rem;
  margin: 1rem 0 0.5rem;
}

/* ============================ TAB NAVIGATION ============================ */
.tab-container {
  max-width: 900px;
  margin: 20px auto;
  display: flex;
  gap: 10px;
  padding: 0 20px;
  justify-content: center;
  flex-wrap: wrap;
  z-index:10;
}

.tab-btn {
  background: rgba(0,0,0,0.4);
  border: 2px solid var(--NuclearFuscia);
  color: var(--ParticlePink);
  padding: 12px 24px;
  font-family: 'GothNerd', sans-serif;
  font-size: 1.1rem;
  cursor: pointer;
  border-radius: 8px;
  transition: all 0.3s;
  flex: 1;
  min-width: 150px;
  z-index: 11;
}

.tab-btn:hover {
  background: var(--ProtonShadow);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px var(--NuclearFuscia);
}

.tab-btn.active {
  background: var(--ParticlePink);
  border: var(--ParticlePink);
  color: #0f0f1b;
  box-shadow: 0 0 20px rgba(255, 199, 255, 0.6);
}

/* ============================ TAB CONTENT ============================ */
.tab-content {
  display: none;
  animation: fadeIn 0.3s ease-in;
}

.tab-content.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============================ LAYOUT ============================ */
.wrap-single {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
}

.card {
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.208), rgba(0,0,0,0.6));
  backdrop-filter: blur(10px);
  padding: 24px;
  margin-top: 20px;
  border-radius: 10px;
  box-shadow: 0 8px 40px var(--VortexViolet);
  border: 3px solid var(--PlasmaPurple);
}

/* ============================ FORM  ============================ */
label {
  display: block;
  font-size: 18px;
  margin-top: 16px;
  margin-bottom: 6px;
  font-family: 'GothNerd', sans-serif;
  color: #ffffff;
  font-weight: bold;
}

input[type="number"],
input[type="text"],
input[type="file"] {
  width: 100%;
  padding: 10px 12px;
  margin-top: 6px;
  border-radius: 6px;
  border: 2px solid var(--NuclearFuscia);
  background: #0b1116;
  color: #ffffff;
  font-family: 'VT323', monospace;
  font-size: 16px;
}

input[type="file"] {
  padding: 8px;
  cursor: pointer;
}

input[type="file"]::file-selector-button {
  background: #DBE2E9;
  color: #000000;
  border: none;
  padding: 8px 16px;
  border-radius: 4px;
  cursor: pointer;
  font-family: 'GothNerd', sans-serif;
  margin-right: 10px;
}

input[type="file"]::file-selector-button:hover {
  background: #67FEBD;
}

input[type="color"] {
  width: 60px;
  height: 40px;
  border: 2px solid var(--NuclearFuscia);
  border-radius: 4px;
  background: transparent;
  cursor: pointer;
}

input[type="text"]:focus,
input[type="number"]:focus {
  outline: none;
  border-color: var(--AlphaAqua);
  box-shadow: 0 0 10px var(--AlphaAqua);
}

.btn-secondary {
  background: var(--PlasmaPurple);
  border-color: var(--PlasmaPurple);
  color: #00311f;
}

.btn-secondary:hover {
  background: var(--PlasmaPurple);
  box-shadow: 0 0 20px rgba(131,12,222,0.2);
}

.btn-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 16px;
}

small {
  color: var(--PlasmaPurple);
  display: block;
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.4;
}

/* ============================ COLOR INPUT GROUPS ============================ */
.color-grid {
  display: grid;
  gap: 12px;
  margin: 16px 0;
}

.color-input-group {
  display: flex;
  gap: 10px;
  align-items: center;
}

.color-input-group input[type="text"] {
  flex: 1;
  margin: 0;
}

.color-input-group input[type="color"] {
  flex-shrink: 0;
}

/* ============================ CANVAS ============================ */
canvas {
  display: block;
  max-width: 100%;
  border: 2px dashed var(--NuclearFuscia);
  margin-top: 20px;
  background: rgba(0, 0, 0, 0.5);
  border-radius: 4px;
}

/* ============================ STATUS MESSAGES ============================ */
#batch-status {
  margin-top: 20px;
  padding: 15px;
  background: rgba(0, 255, 255, 0.1);
  border: 2px solid var(--ParticlePink);
  border-radius: 6px;
  color: var(--ParticlePink);
  font-family: 'GothNerd', sans-serif;
  display: none;
}

#batch-status.active {
  display: block;
}

hr {
  opacity: 0.3;
  margin: 24px 0;
  border: none;
  border-top: 2px solid var(--ParticlePink);
}

/* ============================ RESPONSIVE ============================ */
@media (max-width: 768px) {
  h2 {
    font-size: 1.8rem;
    margin: 60px auto 15px;
  }

  .tab-btn {
    font-size: 0.9rem;
    padding: 10px 16px;
    min-width: 120px;
  }

  .card {
    padding: 16px;
  }

  .btn-row {
    grid-template-columns: 1fr;
  }

  .color-input-group {
    flex-direction: column;
    align-items: stretch;
  }

  .color-input-group input[type="color"] {
    width: 100%;
    height: 50px;
  }
}

@media (max-width: 480px) {
  h2 {
    font-size: 1.5rem;
  }

  .tab-container {
    flex-direction: column;
  }

  .tab-btn {
    width: 100%;
  }
}

/* ============================ BUTTONS ============================ */
.card button,
.btn-row button,
#batch-recolor,
#recolor-single,
#build,
#download {
  background: #2A3439;
  border: 2px solid var(--NuclearFuscia);
  padding: 12px 20px;
  border-radius: 8px;
  cursor: pointer;
  color: #ffffff;
  font-weight: 700;
  margin-top: 16px;
  font-family: 'GothNerd', sans-serif;
  font-size: 1.1rem;
  transition: all 0.3s;
  width: 100%;
}

.card button:hover,
.btn-row button:hover,
#batch-recolor:hover,
#recolor-single:hover,
#build:hover,
#download:hover {
  background: var(--AlphaAqua);
  transform: scale(1.02);
  color: #000000;
  box-shadow: 0 0 20px var(--AlphaAqua);
  border: 1px solid var(--AlphaAqua);
}