/* Modern Design System - PO & Interest Tracker Enterprise */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;800&family=Plus+Jakarta+Sans:wght@400;500;600;700&display=swap');

:root {
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Dark Theme Palette (Default) */
  --bg-primary: #0a0f1d;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.85);
  --bg-card-hover: rgba(30, 41, 59, 0.9);
  --bg-input: #1e293b;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: #3b82f6;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-blue: #3b82f6;
  --accent-blue-glow: rgba(59, 130, 246, 0.25);
  --accent-emerald: #10b981;
  --accent-emerald-bg: rgba(16, 185, 129, 0.12);
  --accent-amber: #f59e0b;
  --accent-amber-bg: rgba(245, 158, 11, 0.12);
  --accent-rose: #f43f5e;
  --accent-rose-bg: rgba(244, 63, 94, 0.12);
  --accent-purple: #8b5cf6;
  --accent-cyan: #06b6d4;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.25);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.15);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.95);
  --bg-card-hover: #ffffff;
  --bg-input: #f1f5f9;
  --border-color: #e2e8f0;
  --border-focus: #2563eb;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.1);
}

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

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  padding-bottom: 70px; /* Space for mobile nav */
  background-image: 
    radial-gradient(at 10% 20%, rgba(59, 130, 246, 0.08) 0px, transparent 40%),
    radial-gradient(at 90% 10%, rgba(139, 92, 246, 0.08) 0px, transparent 40%);
  background-attachment: fixed;
}

/* Glassmorphism helpers */
.glass {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
}

/* App Header */
.app-header {
  position: sticky;
  top: 0;
  z-index: 40;
  padding: 12px 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

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

.brand-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #2563eb, #8b5cf6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 24px;
  color: white;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
}

.brand-title {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
  display: flex;
  flex-direction: column;
}

.brand-title span.sub {
  font-size: 11px;
  font-weight: 500;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

/* Tenant Selector Pill */
.tenant-selector {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
}

.tenant-selector select {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: inherit;
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
  outline: none;
}

.tenant-selector select option {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid transparent;
  outline: none;
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: white;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.45);
}

.btn-success {
  background: linear-gradient(135deg, #059669, #047857);
  color: white;
}

.btn-outline {
  background: var(--bg-input);
  color: var(--text-primary);
  border-color: var(--border-color);
}

.btn-outline:hover {
  background: var(--bg-card-hover);
  border-color: var(--text-muted);
}

.btn-sm {
  padding: 5px 10px;
  font-size: 12px;
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--radius-md);
}

/* Container */
.main-container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Tabs Nav */
.tabs-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 8px;
  overflow-x: auto;
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
}

.tab-btn.active {
  color: var(--accent-blue);
  background: var(--accent-blue-glow);
}

/* Strict Rule Highlight Banner */
.rule-banner {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.15), rgba(139, 92, 246, 0.15));
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.rule-banner-icon {
  font-size: 24px;
  line-height: 1;
}

.rule-banner-content h4 {
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 700;
  color: var(--accent-cyan);
  margin-bottom: 4px;
}

.rule-banner-content p {
  font-size: 13px;
  color: var(--text-secondary);
}

/* KPI Grid */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.kpi-card {
  border-radius: var(--radius-lg);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  position: relative;
  overflow: hidden;
}

.kpi-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--accent-blue);
}

.kpi-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.kpi-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.kpi-value {
  font-family: var(--font-heading);
  font-size: 24px;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.1;
}

.kpi-sub {
  font-size: 12px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Specialized KPI colors */
.kpi-principal::before { background: var(--accent-cyan); }
.kpi-collected::before { background: var(--accent-emerald); }
.kpi-interest::before { background: var(--accent-amber); }
.kpi-unpaid::before { background: var(--accent-rose); }
.kpi-total::before { background: linear-gradient(to bottom, #f59e0b, #ef4444); }

/* Progress Bars */
.progress-container {
  padding: 16px 20px;
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  font-weight: 600;
}

.progress-track {
  height: 10px;
  background: var(--bg-input);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.progress-bar {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.progress-bar-principal { background: linear-gradient(90deg, #10b981, #059669); }
.progress-bar-interest { background: linear-gradient(90deg, #f59e0b, #d97706); }

/* Tracker Table Card */
.tracker-section {
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.tracker-toolbar {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.search-input-wrapper {
  position: relative;
  flex: 1;
  min-width: 240px;
}

.search-input {
  width: 100%;
  padding: 9px 14px 9px 38px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 13px;
  outline: none;
}

.search-input:focus {
  border-color: var(--border-focus);
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

.filter-pills {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.filter-pill {
  padding: 6px 12px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
}

.filter-pill.active {
  background: var(--accent-blue);
  color: white;
  border-color: var(--accent-blue);
}

/* Table styling */
.table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  white-space: nowrap;
}

.data-table th {
  background: var(--bg-input);
  color: var(--text-secondary);
  font-family: var(--font-heading);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.data-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
}

.data-table tr:hover td {
  background: var(--bg-card-hover);
}

.text-right { text-align: right; }
.text-center { text-align: center; }

/* Status Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.badge-paid {
  background: var(--accent-emerald-bg);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-partial {
  background: var(--accent-amber-bg);
  color: var(--accent-amber);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-unpaid {
  background: var(--accent-rose-bg);
  color: var(--accent-rose);
  border: 1px solid rgba(244, 63, 94, 0.3);
}

.badge-overdue {
  background: rgba(220, 38, 38, 0.15);
  color: #ef4444;
  border: 1px solid rgba(220, 38, 38, 0.3);
}

/* Modals & Drawers */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  z-index: 50;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.modal-backdrop.active {
  display: flex;
}

.modal-card {
  width: 100%;
  max-width: 650px;
  max-height: 90vh;
  overflow-y: auto;
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  box-shadow: var(--shadow-lg);
  animation: modalEnter 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.drawer-card {
  max-width: 850px;
}

@keyframes modalEnter {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(10px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 12px;
}

.modal-header h3 {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 700;
}

/* Form Styles */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-control {
  padding: 10px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 13px;
  outline: none;
}

.form-control:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px var(--accent-blue-glow);
}

/* Mobile Sticky Bottom Navigation */
.mobile-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 64px;
  border-top: 1px solid var(--border-color);
  display: none;
  align-items: center;
  justify-content: space-around;
  z-index: 45;
}

.mobile-nav-btn {
  background: transparent;
  border: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  padding: 6px 12px;
}

.mobile-nav-btn.active {
  color: var(--accent-blue);
}

.mobile-nav-icon {
  font-size: 20px;
}

/* Mobile Card view for small screens */
.mobile-po-cards {
  display: none;
  flex-direction: column;
  gap: 12px;
  padding: 16px;
}

.po-card-item {
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  border: 1px solid var(--border-color);
}

.po-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.po-card-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  padding: 10px;
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  font-size: 12px;
}

@media (max-width: 900px) {
  .mobile-nav {
    display: flex;
  }
  .tabs-nav {
    display: none;
  }
  .data-table-desktop {
    display: none;
  }
  .mobile-po-cards {
    display: flex;
  }
}

/* User Auth Widget & Demo Login Chips */
.user-auth-widget {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.user-auth-widget:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-blue);
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.2);
}

/* Pagination Bar & Controls */
.pagination-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 18px;
  border-radius: var(--radius-md);
  margin-top: 8px;
  border: 1px solid var(--border-color);
  font-size: 13px;
}

.pagination-info {
  color: var(--text-secondary);
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.pagination-info strong {
  color: var(--text-primary);
}

.pagination-controls {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
}

.pagination-btn {
  min-width: 34px;
  height: 34px;
  padding: 0 10px;
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-size: 12px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
}

.pagination-btn:hover:not(:disabled) {
  background: var(--bg-card-hover);
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

.pagination-btn.active {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  border-color: #3b82f6;
  color: #ffffff;
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.4);
}

.pagination-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  pointer-events: none;
}

/* Page Size Selector */
.page-size-selector {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-input);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
}

.page-size-selector select {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  outline: none;
}

.page-size-selector select option {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

/* Two-Portal Login Tabs & Card */
.login-portal-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  background: var(--bg-input);
  padding: 4px;
  border-radius: var(--radius-md);
  margin-bottom: 18px;
  border: 1px solid var(--border-color);
}

.login-portal-tab {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s ease;
}

.login-portal-tab:hover {
  color: var(--text-primary);
}

.login-portal-tab.active {
  background: var(--bg-card);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
}

.login-portal-tab.active.tab-tenant {
  color: var(--accent-cyan);
  border-color: rgba(6, 182, 212, 0.4);
}

.login-portal-tab.active.tab-admin {
  color: var(--accent-blue);
  border-color: rgba(59, 130, 246, 0.4);
}

.portal-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.portal-badge-tenant {
  background: rgba(6, 182, 212, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(6, 182, 212, 0.3);
}

.portal-badge-admin {
  background: rgba(59, 130, 246, 0.15);
  color: var(--accent-blue);
  border: 1px solid rgba(59, 130, 246, 0.3);
}