/* ===== CSS Reset & Variables ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* Premium Dark Luxury Theme */
  --bg-primary: #050505;
  --bg-secondary: #0a0a0a;
  --bg-card: rgba(20, 20, 20, 0.6);
  --border-color: rgba(212, 175, 55, 0.3); /* Metallic Gold */
  --border-hover: rgba(212, 175, 55, 0.8);
  
  --text-primary: #f0f0f0;
  --text-secondary: rgba(255, 255, 255, 0.6);
  --text-muted: rgba(255, 255, 255, 0.3);
  
  /* Luxury Accents */
  --accent-gold: #D4AF37;
  --accent-highlight: #F7E7CE; /* Champagne */
  --accent-success: #50C878;   /* Emerald */
  --accent-error: #C21e56;     /* Rose Red */
  
  /* Gradients */
  --gradient-gold: linear-gradient(135deg, #D4AF37, #C5B358);
  --gradient-dark: radial-gradient(circle at center, #1a1a1a 0%, #000000 100%);
  
  /* Spacing */
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;
  
  /* Fonts */
  --font-display: 'Orbitron', sans-serif; /* Kept for brand consistency but styled cleaner */
  --font-body: 'Rajdhani', sans-serif;
}

/* ===== Base Styles ===== */
html, body {
  font-size: 16px;
  height: 100%;
  overflow: hidden;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  background-image: var(--gradient-dark);
  color: var(--text-primary);
  line-height: 1.6;
  letter-spacing: 0.02em;
}

/* ===== Three.js Canvas ===== */
#three-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* ===== Toggle UI Button ===== */
.toggle-ui-btn {
  position: fixed;
  bottom: 15px;
  left: 15px;
  z-index: 1000;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: none;
  background: transparent;
  cursor: pointer;
  transition: all 0.3s ease;
  padding: 0;
  opacity: 0;
}

.toggle-ui-btn:hover {
  opacity: 0.3;
  background: rgba(255, 215, 0, 0.1);
}

.toggle-ui-btn.active {
  opacity: 0.5;
  background: rgba(255, 215, 0, 0.2);
}

/* Invisible on mobile too */
@media (max-width: 600px) {
  .toggle-ui-btn {
    bottom: 10px;
    left: 10px;
    width: 40px;
    height: 40px;
  }
}

/* ===== Container ===== */
.container {
  position: relative;
  z-index: 10;
  max-width: 500px;
  margin: 0 auto;
  padding: 30px 20px;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 20px;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.container.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

/* ===== Header ===== */
.header {
  text-align: center;
  margin-bottom: 40px;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.4rem; /* Smaller, more understated */
  font-weight: 600;
  letter-spacing: 0.15em;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.logo-k {
  color: var(--accent-gold);
  background: linear-gradient(180deg, #F7E7CE 0%, #D4AF37 50%, #B08D26 100%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.5));
}

.logo-arrow {
  color: var(--text-muted);
  font-size: 1rem;
  font-weight: 300;
}

.logo-m {
  color: var(--text-primary);
  opacity: 0.9;
}

.tagline {
  font-family: var(--font-body);
  color: var(--text-secondary);
  font-size: 0.65rem;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  font-weight: 500;
  opacity: 0.7;
}

/* ===== Converter Section ===== */
.converter {
  width: 100%;
}

/* ===== Drop Zone ===== */
.drop-zone {
  position: relative;
  padding: 1px; /* Minimal border space */
  cursor: pointer;
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  background: transparent;
}

.drop-zone-border {
  position: absolute;
  inset: 0;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  transition: all 0.5s ease;
}

.drop-zone:hover .drop-zone-border {
  border-color: var(--accent-gold);
  box-shadow: 0 0 30px rgba(212, 175, 55, 0.1);
}

.drop-zone-inner {
  background: var(--bg-card);
  backdrop-filter: blur(40px);
  -webkit-backdrop-filter: blur(40px);
  border-radius: var(--radius-sm);
  padding: 60px 40px;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.05);
  box-shadow: 
    0 20px 50px rgba(0, 0, 0, 0.5),
    inset 0 1px 1px rgba(255, 255, 255, 0.05);
}

.drop-zone-icon {
  color: var(--accent-gold);
  margin-bottom: 24px;
  opacity: 0.8;
  transition: transform 0.5s ease;
}

.drop-zone:hover .drop-zone-icon {
  transform: translateY(-5px);
  opacity: 1;
}

.drop-zone-title {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  margin-bottom: 12px;
  color: var(--text-primary);
  text-transform: uppercase;
}

.drop-zone-text {
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
}

.drop-zone-text code {
  font-family: 'JetBrains Mono', monospace;
  background: rgba(0, 0, 0, 0.3);
  color: var(--accent-highlight);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

/* ===== Status Panel ===== */
.status-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 24px;
  width: 100%;
  backdrop-filter: blur(40px);
  -webkit-backdrop-filter: blur(40px);
  margin-top: 24px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

/* ===== Verification Card ===== */
.verification-card {
  margin-top: 24px;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  padding: 20px;
  backdrop-filter: blur(10px);
}

.verification-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.verification-title {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
}

.verification-badge {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.1em;
  background: rgba(80, 200, 120, 0.15); /* Success by default */
  color: var(--accent-success);
  border: 1px solid rgba(80, 200, 120, 0.3);
}

.verification-badge.warning {
  background: rgba(255, 68, 68, 0.15);
  color: var(--accent-error);
  border-color: rgba(255, 68, 68, 0.3);
}

.verification-grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-bottom: 16px;
}

.v-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.v-label {
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--text-muted);
}

.v-value {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
}

.v-arrow {
  color: var(--text-muted);
  font-size: 1.2rem;
  opacity: 0.5;
}

.verification-msg {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-style: italic;
}

.status-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.status-icon {
  font-size: 1.2rem;
}

.status-text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
}

/* ===== Stats Grid ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
}

.stat-item {
  text-align: center;
}

.stat-value {
  display: block;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-gold);
  text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}

.stat-label {
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

/* ===== Actions ===== */
.actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  cursor: pointer;
  transition: all 0.3s ease;
  border: 1px solid transparent;
  text-transform: uppercase;
}

.btn-primary {
  background: var(--accent-gold);
  color: #000;
  border-color: var(--accent-gold);
}

.btn-primary:hover {
  background: transparent;
  color: var(--accent-gold);
  box-shadow: 0 0 15px rgba(212, 175, 55, 0.2);
}

.btn-secondary {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--text-secondary);
}

.btn-secondary:hover {
  border-color: var(--text-primary);
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

/* ===== Modal ===== */
.modal {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(10px);
}

.modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  width: 90%;
  max-width: 600px;
  max-height: 70vh;
  display: flex;
  flex-direction: column;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--accent-gold);
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.8rem;
  cursor: pointer;
  padding: 0;
  line-height: 1;
  transition: color 0.2s ease;
}

.modal-close:hover {
  color: var(--accent-gold);
}

.debug-output {
  padding: 20px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  line-height: 1.5;
  color: var(--text-secondary);
  white-space: pre-wrap;
  word-break: break-all;
  overflow-y: auto;
}

/* ===== Responsive ===== */
@media (max-width: 500px) {
  .logo {
    font-size: 1.4rem;
    flex-direction: column;
    gap: 4px;
  }
  
  .logo-arrow {
    transform: rotate(90deg);
    font-size: 1.2rem;
  }
  
  .drop-zone-inner {
    padding: 30px 20px;
  }
  
  .stats-grid {
    gap: 10px;
  }
  
  .stat-value {
    font-size: 1.2rem;
  }
  
  .actions {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
  
  .toggle-ui-btn {
    top: 10px;
    right: 10px;
    width: 44px;
    height: 44px;
  }
}

/* ===== Subtle Scan Line Effect ===== */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    rgba(255, 255, 255, 0.02) 0px,
    rgba(255, 255, 255, 0.02) 1px,
    transparent 1px,
    transparent 2px
  );
  pointer-events: none;
  z-index: 9999;
  opacity: 0.05; /* Barely visible texture */
}