/* ====================================================
   GLOBAL VARIABLES & GENERAL RESETS
   ==================================================== */
:root {
  --bg-primary: #08090d;
  --bg-secondary: #0b0d12;
  --card-bg: #11141b;
  --card-bg-sec: #151922;
  --border-color: rgba(255, 255, 255, 0.08);
  --text-primary: #ffffff;
  --text-secondary: #a0a5b5;
  --text-muted: #646a7a;
  
  --accent-green: #00e676;
  --accent-cyan: #00e5ff;
  --accent-red: #ff3d00;
  --accent-orange: #ff9100;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.6);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.8);
  
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  
  --font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.5;
  overflow-x: hidden;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Mobile-first wrapper constraints for Desktop viewports */
#app-container {
  width: 100%;
  max-width: 480px;
  height: 100vh;
  background-color: var(--bg-secondary);
  border-left: 1px solid var(--border-color);
  border-right: 1px solid var(--border-color);
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

/* Scrollbar styles */
::-webkit-scrollbar {
  width: 4px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: var(--radius-sm);
}

/* Utilities */
.glass {
  background: rgba(17, 20, 27, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent-green) 0%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hidden {
  display: none !important;
}

/* SKELETON LOADER ANIMATION */
.skeleton {
  background: linear-gradient(90deg, #11141b 25%, #1d212c 50%, #11141b 75%);
  background-size: 200% 100%;
  animation: loading-skeleton 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes loading-skeleton {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* TOAST SYSTEM styles */
#toast-container {
  position: absolute;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 9999;
  width: 90%;
  max-width: 400px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  pointer-events: none;
}

.toast {
  padding: 14px 20px;
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow-md);
  pointer-events: auto;
  transform: translateY(-20px);
  opacity: 0;
  animation: toast-in var(--transition-fast) forwards;
  border-left: 4px solid transparent;
}

.toast.success {
  background-color: #1b2f24;
  border-left-color: var(--accent-green);
}

.toast.error {
  background-color: #3b1b17;
  border-left-color: var(--accent-red);
}

.toast.info {
  background-color: #172b38;
  border-left-color: var(--accent-cyan);
}

@keyframes toast-in {
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* GLOBAL SPINNER */
.spinner-overlay {
  position: absolute;
  inset: 0;
  background: rgba(8, 9, 13, 0.85);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  backdrop-filter: blur(4px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.spinner-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--border-color);
  border-top-color: var(--accent-green);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* MODALS / BOTTOM SHEETS */
.modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  z-index: 900;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
  display: flex;
  align-items: flex-end;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.bottom-sheet {
  width: 100%;
  background-color: var(--card-bg);
  border-top-left-radius: var(--radius-lg);
  border-top-right-radius: var(--radius-lg);
  border-top: 1px solid var(--border-color);
  padding: 24px;
  box-shadow: var(--shadow-lg);
  transform: translateY(100%);
  transition: transform var(--transition-normal);
  max-height: 85%;
  overflow-y: auto;
}

.modal-overlay.active .bottom-sheet {
  transform: translateY(0);
}

.sheet-handle {
  width: 40px;
  height: 4px;
  background-color: var(--text-muted);
  border-radius: 2px;
  margin: 0 auto 20px auto;
}

.sheet-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 16px;
  text-align: center;
}

/* Status Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
}
.badge.pending { background: rgba(255, 145, 0, 0.15); color: var(--accent-orange); }
.badge.verified { background: rgba(0, 229, 255, 0.15); color: var(--accent-cyan); }
.badge.refund_pending { background: rgba(255, 145, 0, 0.15); color: var(--accent-orange); }
.badge.refunded, .badge.paid { background: rgba(0, 230, 118, 0.15); color: var(--accent-green); }
.badge.rejected, .badge.failed { background: rgba(255, 61, 0, 0.15); color: var(--accent-red); }
.badge.cancelled { background: rgba(100, 106, 122, 0.15); color: var(--text-secondary); }

/* Common Buttons */
.btn-primary {
  background: linear-gradient(135deg, var(--accent-green) 0%, #00b0ff 100%);
  color: #000;
  font-weight: 700;
  padding: 14px 24px;
  border-radius: var(--radius-md);
  border: none;
  font-size: 16px;
  cursor: pointer;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  box-shadow: 0 4px 16px rgba(0, 230, 118, 0.3);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.btn-primary:active {
  transform: scale(0.98);
  opacity: 0.95;
}

.btn-secondary {
  background-color: var(--card-bg-sec);
  color: var(--text-primary);
  font-weight: 600;
  padding: 14px 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  font-size: 16px;
  cursor: pointer;
  width: 100%;
  transition: transform var(--transition-fast);
}

.btn-secondary:active {
  transform: scale(0.98);
}

/* Copy Button */
.btn-copy {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  padding: 6px 12px;
  border-radius: 8px;
  color: var(--accent-cyan);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: all var(--transition-fast);
}
.btn-copy:active {
  transform: scale(0.95);
}
.btn-copy.copied {
  color: var(--accent-green);
  border-color: var(--accent-green);
}