/* ==========================================================================
   GiTC Pay - Master Modern Design System
   Sleek Dark/Light Glassmorphism, Micro-interactions, Tailored HSL Colors
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Color Palette - Vibrant Indigo / Electric Blue & Emerald Accent */
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --primary-glow: rgba(59, 130, 246, 0.35);
  
  --secondary: #8b5cf6;
  --secondary-glow: rgba(139, 92, 246, 0.3);

  --accent-green: #10b981;
  --accent-green-glow: rgba(16, 185, 129, 0.35);
  
  --accent-amber: #f59e0b;
  --accent-red: #ef4444;

  /* Dark Theme Surfaces */
  --bg-main: #090d16;
  --bg-card: rgba(17, 24, 39, 0.7);
  --bg-card-hover: rgba(24, 33, 53, 0.85);
  --bg-surface: #0f172a;
  --bg-input: rgba(15, 23, 42, 0.8);

  /* Glassmorphism Borders & Shadows */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(59, 130, 246, 0.4);
  --shadow-card: 0 10px 30px -5px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.07);
  --shadow-glow: 0 0 25px var(--primary-glow);

  /* Typography */
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-subtle: #64748b;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(59, 130, 246, 0.12) 0%, transparent 45%),
    radial-gradient(circle at 85% 80%, rgba(139, 92, 246, 0.12) 0%, transparent 45%);
  background-attachment: fixed;
}

/* Glass Card */
.glass-panel {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  transition: var(--transition-smooth);
}

.glass-panel:hover {
  border-color: rgba(255, 255, 255, 0.14);
}

/* Navigation Bar */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 2rem;
  background: rgba(9, 13, 22, 0.85);
  backdrop-filter: blur(20px);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--border-subtle);
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-main);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}

.brand-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
  box-shadow: 0 4px 15px var(--primary-glow);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  transition: var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
  color: var(--text-main);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.35rem;
  font-size: 0.92rem;
  font-weight: 600;
  font-family: var(--font-main);
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition-fast);
  border: 1px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #2563eb);
  color: white;
  box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--primary-glow);
}

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

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-success {
  background: linear-gradient(135deg, var(--accent-green), #059669);
  color: white;
  box-shadow: 0 4px 14px var(--accent-green-glow);
}

.btn-success:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--accent-green-glow);
}

.btn-sm {
  padding: 0.4rem 0.85rem;
  font-size: 0.82rem;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-success {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-pending {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-primary {
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
  border: 1px solid rgba(59, 130, 246, 0.3);
}

/* Grid & Layout Containers */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}

/* Stats Metric Card */
.stat-card {
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
}

.stat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.stat-label {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.stat-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.04);
  font-size: 1.1rem;
}

.stat-value {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-main);
  line-height: 1.2;
}

.stat-subtitle {
  color: var(--text-subtle);
  font-size: 0.8rem;
  margin-top: 0.4rem;
}

/* Forms & Inputs */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-family: var(--font-main);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition-fast);
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.input-copy-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.input-copy-group .form-control {
  font-family: var(--font-mono);
  font-size: 0.88rem;
}

/* Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.custom-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.custom-table th {
  padding: 1rem 1.25rem;
  color: var(--text-subtle);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(255, 255, 255, 0.02);
}

.custom-table td {
  padding: 1.1rem 1.25rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  font-size: 0.9rem;
  color: var(--text-main);
  vertical-align: middle;
}

.custom-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* Code Snippet Box */
.code-box {
  background: #030712;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: #38bdf8;
  overflow-x: auto;
  position: relative;
}

/* Tab System */
.tabs-nav {
  display: flex;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 1.5rem;
  overflow-x: auto;
}

.tab-btn {
  padding: 0.75rem 1.25rem;
  background: none;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-main);
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: var(--transition-fast);
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--text-main);
}

.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Soundbox Indicator (Merchant Voice / Audio alert banner) */
.soundbox-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  background: linear-gradient(90deg, rgba(16, 185, 129, 0.15), rgba(59, 130, 246, 0.1));
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-sm);
  margin-bottom: 1.5rem;
}

.soundbox-status {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: #34d399;
}

.pulse-dot {
  width: 10px;
  height: 10px;
  background: #10b981;
  border-radius: 50%;
  box-shadow: 0 0 10px #10b981;
  animation: pulse 1.8s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1.05); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

/* Hero Section */
.hero-section {
  text-align: center;
  padding: 5rem 1.5rem 3rem;
  max-width: 900px;
  margin: 0 auto;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.3);
  padding: 0.35rem 1rem;
  border-radius: var(--radius-full);
  color: #60a5fa;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

.text-gradient {
  background: linear-gradient(135deg, #60a5fa 0%, #a78bfa 50%, #34d399 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 2.5rem;
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Responsive */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.25rem;
  }
  .navbar {
    padding: 1rem;
  }
  .nav-links {
    display: none;
  }
}