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

:root {
  /* Light Mode Defaults */
  --bg: #F8FAFC;
  --surface: #FFFFFF;
  --surface-hover: #F1F5F9;
  --border: #E2E8F0;
  --text-main: #0F172A;
  --text-muted: #64748B;
  --primary: #10B981; /* Emerald */
  --primary-hover: #059669;
  --ring: rgba(16, 185, 129, 0.2);
  --header-bg: rgba(255, 255, 255, 0.8);
  
  --font-sans: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

[data-theme="dark"] {
  /* Midnight Dark Mode */
  --bg: #09090B;
  --surface: #18181B;
  --surface-hover: #27272A;
  --border: #27272A;
  --text-main: #FAFAFA;
  --text-muted: #A1A1AA;
  --header-bg: rgba(9, 9, 11, 0.8);
  --ring: rgba(16, 185, 129, 0.3);
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg);
  color: var(--text-main);
  transition: background-color 0.3s, color 0.3s;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* --- Glassmorphism Header --- */
header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.03em;
}

.logo-img {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  object-fit: cover;
}

.pro-badge {
  font-size: 0.6rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  letter-spacing: 0.05em;
}

.header-actions { display: flex; align-items: center; gap: 12px; }

.icon-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-main);
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: all 0.2s;
}
.icon-btn:hover { background: var(--surface-hover); }

/* --- Layout --- */
.app-container {
  max-width: 1024px;
  margin: 0 auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

@media (min-width: 768px) {
  .app-container { flex-direction: row; align-items: flex-start; }
  .edit-col { flex: 1.2; }
  .preview-col { flex: 1; position: sticky; top: 80px; }
}

/* --- Mobile Tabs --- */
.mobile-tabs {
  display: flex;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 4px;
  margin-bottom: 16px;
}
.mobile-tabs button {
  flex: 1;
  padding: 10px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
}
.mobile-tabs button.active {
  background: var(--surface-hover);
  color: var(--text-main);
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}
@media (min-width: 768px) { .mobile-tabs { display: none; } }

/* --- Form Cards --- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 16px;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.section-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}

.input-group { margin-bottom: 16px; }
.input-row { display: flex; gap: 12px; }
.input-row > * { flex: 1; }

label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 6px;
}

input, select {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: all 0.2s;
}
input:focus, select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--ring);
}

/* --- Currency & Status Pills --- */
.currency-wrap {
  display: flex;
  gap: 6px;
  margin-bottom: 16px;
}
.currency-btn {
  padding: 6px 12px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}
.currency-btn.active { border-color: var(--primary); color: var(--primary); background: var(--ring); }

.status-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-bottom: 16px; }
.status-btn {
  padding: 12px 8px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}
.status-btn[data-status="Paid"].active { background: #DCFCE7; border-color: #10B981; color: #065F46; }
.status-btn[data-status="Part Payment"].active { background: #FEF3C7; border-color: #F59E0B; color: #92400E; }
.status-btn[data-status="Pay on Delivery"].active { background: #E0F2FE; border-color: #0EA5E9; color: #075985; }

[data-theme="dark"] .status-btn[data-status="Paid"].active { background: rgba(16, 185, 129, 0.2); color: #34D399; }
[data-theme="dark"] .status-btn[data-status="Part Payment"].active { background: rgba(245, 158, 11, 0.2); color: #FBBF24; }
[data-theme="dark"] .status-btn[data-status="Pay on Delivery"].active { background: rgba(14, 165, 233, 0.2); color: #38BDF8; }

/* --- Buttons --- */
.btn-primary {
  width: 100%;
  padding: 14px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 10px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}
.btn-primary:hover { background: var(--primary-hover); }
.btn-primary:active { transform: scale(0.98); }

.btn-outline {
  padding: 10px 16px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-main);
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
}

/* --- Premium Receipt --- */
.receipt-container { perspective: 1000px; }

.receipt-card {
  background: #fff;
  color: #0F172A;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 20px 40px -10px rgba(0,0,0,0.15);
  position: relative;
  margin-bottom: 24px;
}

.receipt-header-banner {
  height: 80px;
  background: #10B981; /* Emerald Default */
  position: relative;
  padding: 16px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
.receipt-header-banner.indigo { background: #4F46E5; }
.receipt-header-banner.onyx { background: #18181B; }
.receipt-header-banner.rose { background: #E11D48; }
.receipt-header-banner.gold { background: linear-gradient(135deg, #F59E0B, #B45309); }

.biz-logo {
  width: 40px;
  height: 40px;
  background: #fff;
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 1.2rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  overflow: hidden;
}
.biz-logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 8px;
}

/* Diagonal Stamp */
.stamp {
  position: absolute;
  top: 30px;
  right: 20px;
  font-size: 1.2rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: rgba(255,255,255,0.4);
  border: 2px solid rgba(255,255,255,0.4);
  padding: 4px 12px;
  border-radius: 6px;
  transform: rotate(-15deg);
  pointer-events: none;
}

.receipt-body { padding: 24px; }
.receipt-meta { display: flex; justify-content: space-between; font-size: 0.8rem; color: #64748B; margin-bottom: 20px; }

.receipt-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  margin-bottom: 20px;
}
.receipt-table th { text-align: left; padding-bottom: 8px; border-bottom: 1px solid #E2E8F0; color: #64748B; font-weight: 500; }
.receipt-table td { padding: 8px 0; border-bottom: 1px dashed #F1F5F9; }
.receipt-table th:last-child, .receipt-table td:last-child { text-align: right; }

.receipt-totals { font-family: var(--font-mono); font-size: 0.85rem; }
.t-row { display: flex; justify-content: space-between; margin-bottom: 8px; color: #64748B; }
.t-row.grand { font-size: 1.1rem; font-weight: 700; color: #0F172A; border-top: 1px solid #E2E8F0; padding-top: 12px; margin-top: 12px; }

.bank-details {
  margin-top: 24px;
  padding: 16px;
  background: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  font-size: 0.8rem;
}
.bank-details p { margin-bottom: 4px; }
.bank-details strong { color: #0F172A; }

/* Zigzag bottom edge */
.receipt-zigzag {
  height: 12px;
  background: linear-gradient(-45deg, transparent 8px, #fff 0), linear-gradient(45deg, transparent 8px, #fff 0);
  background-size: 16px 16px;
  background-repeat: repeat-x;
  background-position: left bottom;
  transform: translateY(1px);
}

.receipt-watermark {
  text-align: center;
  font-size: 0.65rem;
  color: #94A3B8;
  padding: 16px;
  background: #fff;
  border-top: 1px solid #F1F5F9;
  letter-spacing: 0.05em;
  font-weight: 600;
}

/* --- Modal --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 16px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.modal-overlay.active { opacity: 1; pointer-events: all; }

.modal-content {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 32px;
  max-width: 400px;
  width: 100%;
  transform: translateY(20px);
  transition: transform 0.3s;
}
.modal-overlay.active .modal-content { transform: translateY(0); }

.hidden { display: none !important; }

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--text-main);
  color: var(--bg);
  padding: 12px 24px;
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 600;
  opacity: 0;
  transition: all 0.3s;
  z-index: 1000;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* --- Premium Animations --- */

/* Smooth fade in for the whole page */
body {
  animation: fadeInPage 0.8s ease-out;
}

@keyframes fadeInPage {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Slide up and fade in for the cards */
.card {
  animation: slideUpFade 0.6s cubic-bezier(0.16, 1, 0.3, 1) backwards;
}

/* Stagger the animations so they appear one after another */
.card:nth-child(1) { animation-delay: 0.1s; }
.card:nth-child(2) { animation-delay: 0.2s; }
.card:nth-child(3) { animation-delay: 0.3s; }

@keyframes slideUpFade {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Make the live preview receipt pop in */
.preview-col {
  animation: scaleIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.4s backwards;
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.96);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Pulse animation for the Pro badge (very subtle) */
.pro-badge {
  animation: subtlePulse 2s infinite;
}

@keyframes subtlePulse {
  0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
  70% { box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

/* --- Onboarding Tour Styling --- */
.tour-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(2px);
  z-index: 999;
  display: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.tour-overlay.active {
  display: block;
  opacity: 1;
}

.tour-box {
  position: fixed;
  background: var(--surface);
  color: var(--text-main);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  max-width: 320px;
  width: 90%;
  box-shadow: 0 20px 40px rgba(0,0,0,0.2);
  z-index: 1000;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.95);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  opacity: 0;
  pointer-events: none;
}

.tour-box.active {
  transform: translate(-50%, -50%) scale(1);
  opacity: 1;
  pointer-events: auto;
}

.tour-box h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: var(--primary);
}

.tour-box p {
  font-size: 0.9rem;
  line-height: 1.5;
  margin-bottom: 16px;
  color: var(--text-muted);
}

.tour-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.tour-dots {
  display: flex;
  gap: 6px;
}

.tour-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border);
  transition: background 0.3s;
}

.tour-dot.active {
  background: var(--primary);
}

.tour-btn {
  background: var(--primary);
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  font-size: 0.85rem;
}