frontend/src/app.css

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

:root {
  /* Midnight Dark Glassmorphism Theme Palette (Permanent) */
  --bg-app: #0b0f19;
  --bg-card: rgba(20, 28, 46, 0.85);
  --bg-card-hover: rgba(30, 41, 66, 0.92);
  --bg-input: rgba(30, 41, 59, 0.95);

  /* Glassmorphism Tokens */
  --glass-bg: rgba(20, 28, 46, 0.8);
  --glass-bg-hover: rgba(30, 41, 66, 0.9);
  --glass-border: 1px solid rgba(255, 255, 255, 0.12);
  --glass-border-subtle: 1px solid rgba(255, 255, 255, 0.08);
  --glass-blur: blur(16px) saturate(180%);
  --glass-shadow: 0 12px 40px 0 rgba(0, 0, 0, 0.4);

  /* Brand Accents */
  --accent-primary: #10b981;
  --accent-primary-hover: #059669;
  --accent-mint: #34d399;
  --accent-mint-light: rgba(16, 185, 129, 0.15);
  --accent-secondary: #14b8a6;
  --accent-cyan: #38bdf8;
  --accent-success: #10b981;
  --accent-danger: #f43f5e;
  --accent-danger-light: rgba(244, 63, 94, 0.15);
  --accent-warning: #f59e0b;
  --accent-purple: #a855f7;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #10b981 0%, #059669 100%);
  --gradient-btn: linear-gradient(135deg, #10b981 0%, #047857 100%);
  --gradient-header: linear-gradient(135deg, #34d399 0%, #10b981 100%);
  --gradient-hero: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  --gradient-glow: radial-gradient(circle at 50% 0%, rgba(16, 185, 129, 0.18), transparent 70%);

  /* Typography Colors */
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-light: #cbd5e1;
  --text-dark: #f8fafc;

  /* Borders & Shadows */
  --border-light: #1e293b;
  --border-glow: 1px solid rgba(255, 255, 255, 0.12);
  --border-solid: #334155;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 12px 40px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 24px rgba(16, 185, 129, 0.25);

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  width: 100%;
  min-height: 100vh;
  background-color: var(--bg-app);
  background-image: 
    radial-gradient(at 0% 0%, rgba(16, 185, 129, 0.08) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(15, 90, 71, 0.06) 0px, transparent 50%),
    radial-gradient(at 50% 50%, rgba(13, 148, 136, 0.04) 0px, transparent 50%);
  background-attachment: fixed;
  color: var(--text-main);
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.5;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Custom Sleek Scrollbar */
::-webkit-scrollbar {
  width: 7px;
  height: 7px;
}

::-webkit-scrollbar-track {
  background: var(--bg-app);
}

::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-primary);
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.25;
  font-weight: 700;
  color: var(--text-main);
}

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: all 0.2s ease;
}

a:hover {
  color: var(--accent-mint);
}

/* Global Utility Classes */
.text-cyan { color: var(--accent-secondary) !important; }
.text-indigo { color: var(--accent-primary) !important; }
.text-violet { color: var(--accent-purple) !important; }
.text-green { color: var(--accent-success) !important; }
.text-red { color: var(--accent-danger) !important; }
.text-amber { color: var(--accent-warning) !important; }
.text-muted { color: var(--text-muted) !important; }

.gradient-text-header {
  color: var(--accent-primary);
  font-weight: 800;
}

.glass-panel, .glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  border-radius: var(--radius-md);
  box-shadow: var(--glass-shadow);
}

.glass-card-hover {
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.glass-card-hover:hover {
  transform: translateY(-2px);
  background: var(--glass-bg-hover);
  box-shadow: 0 12px 40px 0 rgba(15, 23, 42, 0.12);
}

.animate-fade-in {
  animation: fadeIn 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

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

/* POS Thermal Printer Styles (58mm / 80mm Layout) */
@media print {
  body * {
    visibility: hidden;
  }
  .printable-thermal-receipt, .printable-thermal-receipt * {
    visibility: visible;
  }
  .printable-thermal-receipt {
    position: absolute;
    left: 0;
    top: 0;
    width: 80mm;
    padding: 10px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 12px;
    line-height: 1.3;
    color: #000000 !important;
    background: #ffffff !important;
  }
  @page {
    size: 80mm auto;
    margin: 0;
  }
}