/* ==========================================================
   Premium QR Code Generator - Glassmorphism UI Design System
   Compatible with Bootstrap 5 | allin1prosolution.site
   ========================================================== */

:root {
  --bg-gradient-dark: linear-gradient(135deg, #0b0f19 0%, #17153a 50%, #0b0f19 100%);
  --bg-gradient-light: linear-gradient(135deg, #f8fafc 0%, #e0e7ff 50%, #f1f5f9 100%);
  
  --glass-bg-dark: rgba(23, 27, 48, 0.65);
  --glass-border-dark: rgba(255, 255, 255, 0.12);
  --glass-shadow-dark: 0 8px 32px 0 rgba(0, 0, 0, 0.37);

  --glass-bg-light: rgba(255, 255, 255, 0.75);
  --glass-border-light: rgba(255, 255, 255, 0.6);
  --glass-shadow-light: 0 8px 32px 0 rgba(31, 38, 135, 0.1);

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  
  --accent-cyan: #06b6d4;
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-pink: #ec4899;
}

[data-theme="light"] {
  --text-main: #0f172a;
  --text-muted: #64748b;
  --glass-bg: var(--glass-bg-light);
  --glass-border: var(--glass-border-light);
  --glass-shadow: var(--glass-shadow-light);
  body {
    background: var(--bg-gradient-light) !important;
    color: var(--text-main);
  }
}

[data-theme="dark"], body {
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --glass-bg: var(--glass-bg-dark);
  --glass-border: var(--glass-border-dark);
  --glass-shadow: var(--glass-shadow-dark);
  background: var(--bg-gradient-dark);
  color: var(--text-main);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  min-height: 100vh;
}

/* Glassmorphism Card Element */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: 1.25rem;
  box-shadow: var(--glass-shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-card:hover {
  border-color: rgba(99, 102, 241, 0.4);
  box-shadow: 0 12px 40px 0 rgba(99, 102, 241, 0.2);
}

/* Hero Section */
.hero-title {
  font-size: 2.75rem;
  font-weight: 800;
  background: linear-gradient(90deg, #38bdf8, #818cf8, #c084fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  color: var(--text-muted);
  font-size: 1.15rem;
}

/* QR Type Selector Pills */
.qr-type-pills .nav-link {
  color: var(--text-muted);
  border-radius: 0.75rem;
  padding: 0.65rem 1.1rem;
  font-size: 0.95rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: all 0.25s ease;
}

.qr-type-pills .nav-link:hover {
  color: #ffffff;
  background: rgba(99, 102, 241, 0.2);
  border-color: rgba(99, 102, 241, 0.4);
}

.qr-type-pills .nav-link.active {
  background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%) !important;
  color: #ffffff !important;
  border-color: transparent !important;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

/* Live Preview Canvas Container */
.qr-preview-box {
  background: #ffffff;
  border-radius: 1.25rem;
  padding: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 280px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  position: relative;
  overflow: hidden;
}

.qr-preview-box canvas, .qr-preview-box svg {
  max-width: 100%;
  height: auto;
}

/* Color & Slider Controls */
.form-label-custom {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.form-control-color-custom {
  width: 100%;
  height: 42px;
  padding: 4px;
  border-radius: 0.5rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(15, 23, 42, 0.5);
  cursor: pointer;
}

.btn-generate {
  background: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
  border: none;
  color: #ffffff;
  font-weight: 700;
  border-radius: 0.75rem;
  padding: 0.85rem 2rem;
  font-size: 1.1rem;
  box-shadow: 0 4px 15px rgba(6, 182, 212, 0.4);
  transition: all 0.25s ease;
}

.btn-generate:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(6, 182, 212, 0.6);
}

/* Navbar Theme Toggle */
.theme-toggle-btn {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
}