/* ==========================================================================
   UPPCL Bill Calculator & Consumer Portal - Custom Stylesheet
   ========================================================================== */

:root {
  --primary: #f59e0b;
  --primary-hover: #d97706;
  --primary-dark: #b45309;
  --secondary: #0f172a;
  --accent: #2563eb;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --bg-gradient-start: #f8fafc;
  --bg-gradient-end: #f1f5f9;
}

/* Strict mobile viewport constraint to prevent horizontal scrolling */
*, *::before, *::after {
  box-sizing: border-box;
}

html, body {
  overflow-x: hidden;
  max-width: 100vw;
  width: 100%;
  margin: 0;
  padding: 0;
  -webkit-text-size-adjust: 100%;
  touch-action: manipulation;
}

img, svg, video {
  max-width: 100%;
}

a, button {
  -webkit-tap-highlight-color: rgba(245, 158, 11, 0.2);
}

.overflow-x-auto {
  -webkit-overflow-scrolling: touch;
}

/* iOS Safari prevent unwanted auto-zoom on input focus */
@media (max-width: 640px) {
  input, select, textarea {
    font-size: 16px !important;
  }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: #f1f5f9;
}
::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

/* Glassmorphism & Card Effects */
.glass-card {
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(226, 232, 240, 0.8);
}
.dark .glass-card {
  background: rgba(30, 41, 59, 0.94);
  border: 1px solid rgba(51, 65, 85, 0.7);
}

.gradient-banner {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
}

.gradient-accent {
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
}

.gradient-energy {
  background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
}

/* Animations */
@keyframes pulseGlow {
  0%, 100% {
    box-shadow: 0 0 15px rgba(245, 158, 11, 0.2);
  }
  50% {
    box-shadow: 0 0 25px rgba(245, 158, 11, 0.45);
  }
}

.pulse-glow {
  animation: pulseGlow 3s infinite ease-in-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-slide-down {
  animation: slideDown 0.25s ease-out forwards;
}

@keyframes slideUp {
  from {
    transform: translateY(100%);
  }
  to {
    transform: translateY(0);
  }
}

.animate-slide-up {
  animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Custom Number Input spinner hiding */
input[type=number]::-webkit-inner-spin-button, 
input[type=number]::-webkit-outer-spin-button { 
  -webkit-appearance: none; 
  margin: 0; 
}
input[type=number] {
  -moz-appearance: textfield;
}

/* Range Slider Styling - Touch-friendly 28px thumb on mobile */
input[type=range] {
  -webkit-appearance: none;
  background: transparent;
  touch-action: pan-y;
}
input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  height: 26px;
  width: 26px;
  border-radius: 50%;
  background: #f59e0b;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
  border: 3px solid #ffffff;
  transition: transform 0.15s ease;
}
input[type=range]::-webkit-slider-thumb:hover,
input[type=range]::-webkit-slider-thumb:active {
  transform: scale(1.15);
}
input[type=range]::-moz-range-thumb {
  height: 26px;
  width: 26px;
  border-radius: 50%;
  background: #f59e0b;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
  border: 3px solid #ffffff;
}

/* Badge tags */
.badge-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.025em;
}

/* Mobile Sticky Bottom Bar */
.mobile-sticky-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 45;
  background: rgba(15, 23, 42, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid rgba(245, 158, 11, 0.3);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.25);
  padding: 0.75rem 1rem calc(0.75rem + env(safe-area-inset-bottom, 0px)) 1rem;
}

/* Print Stylesheet for Professional Bill Receipt */
@media print {
  body * {
    visibility: hidden;
  }
  #printableBillReceipt, #printableBillReceipt * {
    visibility: visible;
  }
  #printableBillReceipt {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    margin: 0;
    padding: 20px;
    background: white !important;
    color: black !important;
    border: 1px solid #ddd;
    box-shadow: none !important;
  }
  .no-print, .mobile-sticky-bar {
    display: none !important;
  }
}