/* ==========================================
   RICHWAY CURRENCY EXCHANGE - DESIGN SYSTEM
   ========================================== */

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Sarabun:wght@300;400;500;600;700&display=swap');

:root {
  /* Colors */
  --bg-main: #f1f5f9;
  --bg-sidebar: #ffffff;
  --bg-card: #ffffff;
  --bg-input: #f8fafc;
  --border-color: #cbd5e1;
  --border-hover: #94a3b8;
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  
  --color-gold: #d97706;
  --color-gold-dark: #b45309;
  --color-gold-light: #fef08a;
  --color-gold-rgb: 217, 119, 6;
  
  --color-blue: #2563eb;
  --color-blue-dark: #1d4ed8;
  --color-blue-light: #60a5fa;
  
  --color-success: #10b981;
  --color-success-dark: #047857;
  --color-success-bg: rgba(16, 185, 129, 0.1);
  
  --color-danger: #ef4444;
  --color-danger-dark: #b91c1c;
  --color-danger-bg: rgba(239, 68, 68, 0.1);
  
  /* Layout Dimensions */
  --sidebar-width: 280px;
  
  /* Fonts */
  --font-family: 'Inter', 'Sarabun', sans-serif;
  
  /* Box Shadow */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
  --shadow-gold: 0 0 15px rgba(217, 119, 6, 0.05);
}

/* Base resets & styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-family);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.5;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg-main);
}
::-webkit-scrollbar-thumb {
  background: var(--bg-input);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ==========================================
   LOGIN SCREEN
   ========================================== */
.login-overlay {
  position: fixed;
  inset: 0;
  background: linear-gradient(135deg, #f1f5f9 0%, #cbd5e1 100%);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  transition: opacity 0.5s ease;
}

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 2.5rem;
  border-radius: 16px;
  width: 100%;
  max-width: 440px;
  box-shadow: var(--shadow-lg), var(--shadow-gold);
  backdrop-filter: blur(10px);
  text-align: center;
  animation: floatIn 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.login-logo {
  max-height: 70px;
  margin-bottom: 1rem;
}

.login-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.login-subtitle {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-bottom: 2rem;
}

.form-group {
  margin-bottom: 1.25rem;
  text-align: left;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.input-icon-wrapper {
  position: relative;
}

.input-icon-wrapper i {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  width: 18px;
  height: 18px;
}

.form-input {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.75rem;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: all 0.2s ease;
  font-family: var(--font-family);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-gold);
  box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.2);
  background-color: #ffffff;
}

.btn-primary {
  width: 100%;
  background: linear-gradient(135deg, var(--color-gold-dark) 0%, var(--color-gold) 100%);
  color: #000;
  border: none;
  padding: 0.85rem;
  font-weight: 700;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  box-shadow: 0 4px 10px rgba(245, 158, 11, 0.2);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 15px rgba(245, 158, 11, 0.35);
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-light) 100%);
}

.btn-primary:active {
  transform: translateY(1px);
}

.login-error {
  background-color: var(--color-danger-bg);
  border: 1px solid var(--color-danger);
  color: var(--color-danger);
  padding: 0.75rem;
  border-radius: 8px;
  font-size: 0.85rem;
  margin-top: 1rem;
  display: none;
  align-items: center;
  gap: 0.5rem;
  animation: shake 0.4s ease;
}

/* ==========================================
   APP CONTAINER LAYOUT
   ========================================== */
.app-container {
  display: flex;
  min-height: 100vh;
}

/* Sidebar Styling */
.sidebar {
  width: var(--sidebar-width);
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
}

.sidebar-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.sidebar-logo {
  height: 40px;
  width: auto;
}

.sidebar-title-wrapper {
  display: flex;
  flex-direction: column;
}

.sidebar-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.5px;
}

.sidebar-subtitle {
  font-size: 0.65rem;
  color: var(--color-gold);
  letter-spacing: 1px;
  text-transform: uppercase;
  font-weight: 600;
}

.sidebar-menu {
  padding: 1.5rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex-grow: 1;
  overflow-y: auto;
}

.menu-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.menu-item:hover {
  background-color: #f1f5f9;
  color: var(--text-primary);
}

.menu-item.active {
  background-color: rgba(245, 158, 11, 0.1);
  color: var(--color-gold);
  font-weight: 600;
  border-left: 3px solid var(--color-gold);
}

.menu-item i {
  width: 18px;
  height: 18px;
}

.sidebar-footer {
  padding: 1rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-gold-dark), var(--color-gold));
  color: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
}

.username-display {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

.btn-logout {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.btn-logout:hover {
  color: var(--color-danger);
  background-color: var(--color-danger-bg);
}

/* Content Container */
.main-content {
  margin-left: var(--sidebar-width);
  padding: 2rem;
  width: calc(100% - var(--sidebar-width));
  min-height: 100vh;
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1rem;
}

.page-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
}

.page-subtitle {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

/* ==========================================
   DASHBOARD TAB
   ========================================== */
.period-tabs {
  display: flex;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 0.25rem;
  border-radius: 8px;
  gap: 0.25rem;
}

.period-tab {
  padding: 0.5rem 1.25rem;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: var(--font-family);
}

.period-tab.active {
  background-color: var(--color-gold);
  color: #000;
  font-weight: 600;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.stat-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  height: 4px;
  width: 100%;
}

.stat-buy::before { background-color: var(--color-blue); }
.stat-sell::before { background-color: var(--color-success); }
.stat-pnl::before { background-color: var(--color-gold); }
.stat-cust::before { background-color: var(--color-gold-light); }

.stat-info {
  display: flex;
  flex-direction: column;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.stat-value {
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--text-primary);
}

.stat-unit {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 400;
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.stat-buy .stat-icon { background-color: rgba(59, 130, 246, 0.1); color: var(--color-blue); }
.stat-sell .stat-icon { background-color: rgba(16, 185, 129, 0.1); color: var(--color-success); }
.stat-pnl .stat-icon { background-color: rgba(245, 158, 11, 0.1); color: var(--color-gold); }
.stat-cust .stat-icon { background-color: rgba(254, 240, 138, 0.1); color: var(--color-gold); }

/* Dashboard layout sections */
.dashboard-details-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.dashboard-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
}

.dashboard-card-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Charts and visuals */
.chart-container {
  height: 250px;
  position: relative;
  width: 100%;
}

.best-sellers-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.best-seller-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.best-seller-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.flag-code {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.currency-badge {
  background-color: var(--bg-input);
  padding: 0.25rem 0.5rem;
  border-radius: 6px;
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--color-gold);
}

.best-seller-info {
  text-align: right;
}

.best-seller-volume {
  font-weight: 600;
  font-size: 0.95rem;
}

.best-seller-shares {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* Dashboard Rates Table */
.dashboard-table-container {
  margin-top: 1.5rem;
}

.table-wrapper {
  overflow-x: auto;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

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

th {
  background-color: var(--bg-main);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.85rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
}

td {
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
}

tr:last-child td {
  border-bottom: none;
}

tr:hover td {
  background-color: rgba(0, 0, 0, 0.015);
}

/* ==========================================
   TRANSACTIONS TAB
   ========================================== */
.txn-mode-selector {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.txn-mode-btn {
  padding: 1rem;
  border-radius: 10px;
  font-size: 1.1rem;
  font-weight: 700;
  border: 1px solid var(--border-color);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  transition: all 0.3s ease;
  font-family: var(--font-family);
}

.txn-mode-btn.buy-mode {
  background-color: rgba(16, 185, 129, 0.05);
  color: var(--color-success);
  border-color: rgba(16, 185, 129, 0.2);
}

.txn-mode-btn.buy-mode.active {
  background-color: var(--color-success);
  color: #000;
  border-color: var(--color-success);
  box-shadow: 0 0 15px rgba(16, 185, 129, 0.25);
}

.txn-mode-btn.sell-mode {
  background-color: rgba(239, 68, 68, 0.05);
  color: var(--color-danger);
  border-color: rgba(239, 68, 68, 0.2);
}

.txn-mode-btn.sell-mode.active {
  background-color: var(--color-danger);
  color: #ffffff;
  border-color: var(--color-danger);
  box-shadow: 0 0 15px rgba(239, 68, 68, 0.25);
}

.txn-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 1.5rem;
}

.customer-form-section {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.card-title-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}

.badge-buy {
  background-color: var(--color-success-bg);
  color: var(--color-success);
}

.badge-sell {
  background-color: var(--color-danger-bg);
  color: var(--color-danger);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

/* Custom Select Dropdowns */
.form-select {
  width: 100%;
  padding: 0.75rem 1rem;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 0.95rem;
  outline: none;
  font-family: var(--font-family);
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394a3b8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1.25em;
  transition: all 0.2s ease;
}

.form-select:focus {
  border-color: var(--color-gold);
  box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.2);
}

/* Currency exchanging cart */
.cart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.btn-secondary {
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.5rem 1rem;
  font-weight: 600;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.btn-secondary:hover {
  background-color: var(--border-hover);
}

.cart-table th {
  padding: 0.5rem 0.75rem;
}

.cart-table td {
  padding: 0.5rem 0.75rem;
  vertical-align: middle;
}

.cart-input {
  width: 100%;
  padding: 0.5rem;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 0.9rem;
}

.cart-input:focus {
  outline: none;
  border-color: var(--color-gold);
}

.cart-input-rate {
  font-weight: 600;
  color: var(--color-gold);
}

.cart-total-display {
  text-align: right;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

.cart-total-val {
  color: var(--color-gold);
  font-size: 1.5rem;
  margin-left: 0.5rem;
}

.btn-remove {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.2s ease;
  display: flex;
  align-items: center;
}

.btn-remove:hover {
  color: var(--color-danger);
}

.txn-actions {
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
  margin-top: 1.5rem;
}

/* ==========================================
   EXCHANGE RATES EDITOR
   ========================================== */
.rates-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  gap: 1.5rem;
}

.search-rates-wrapper {
  position: relative;
  max-width: 320px;
  width: 100%;
}

.search-rates-wrapper i {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  width: 16px;
  height: 16px;
}

.search-rates-input {
  width: 100%;
  padding: 0.5rem 0.75rem 0.5rem 2.25rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 0.875rem;
}

.search-rates-input:focus {
  outline: none;
  border-color: var(--color-gold);
}

.rates-grid-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.rate-currency-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
}

.rate-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding-bottom: 0.5rem;
}

.rate-currency-info {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.rate-currency-name {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.rate-denoms-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-height: 280px;
  overflow-y: auto;
  padding-right: 0.25rem;
}

.rate-denom-row {
  display: grid;
  grid-template-columns: 1fr 1.25fr 1.25fr;
  gap: 0.5rem;
  align-items: center;
}

.rate-denom-lbl {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.rate-input-group {
  position: relative;
}

.rate-input-group span {
  position: absolute;
  left: 0.4rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--text-muted);
}

.rate-input-group.buy-input-group span {
  color: var(--color-success);
}

.rate-input-group.sell-input-group span {
  color: var(--color-danger);
}

.rate-input {
  width: 100%;
  padding: 0.35rem 0.35rem 0.35rem 1.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  color: var(--text-primary);
  text-align: right;
  font-family: var(--font-family);
}

.rate-input:focus {
  outline: none;
  border-color: var(--color-gold);
}

/* ==========================================
   STOCK MANAGER TAB
   ========================================== */
.stock-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1.5rem;
}

.stock-card-header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.stock-date-picker {
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.4rem 0.75rem;
  border-radius: 6px;
  font-family: var(--font-family);
  font-size: 0.85rem;
  outline: none;
}

.stock-date-picker:focus {
  border-color: var(--color-gold);
}

.thb-stock-summary {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  background-color: var(--bg-input);
  border-radius: 10px;
  border: 1px solid var(--border-color);
  margin-bottom: 1.5rem;
  text-align: center;
}

.thb-stock-balance {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--color-success);
  margin-top: 0.5rem;
  margin-bottom: 1rem;
}

.thb-stock-actions {
  display: flex;
  gap: 0.75rem;
  width: 100%;
}

.thb-stock-actions button {
  flex: 1;
}

.btn-success {
  background: linear-gradient(135deg, var(--color-success-dark) 0%, var(--color-success) 100%);
  color: #000;
  border: none;
  padding: 0.65rem;
  font-weight: 700;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
}

.btn-success:hover {
  background: linear-gradient(135deg, var(--color-success) 0%, #a7f3d0 100%);
}

.btn-danger {
  background: linear-gradient(135deg, var(--color-danger-dark) 0%, var(--color-danger) 100%);
  color: #fff;
  border: none;
  padding: 0.65rem;
  font-weight: 700;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
}

.btn-danger:hover {
  background: linear-gradient(135deg, var(--color-danger) 0%, #fca5a5 100%);
}

.nested-stock-row {
  background-color: rgba(0, 0, 0, 0.01);
}

.nested-stock-row td {
  padding-left: 2.5rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.stock-expand-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.15rem;
  border-radius: 4px;
  display: inline-flex;
  vertical-align: middle;
  transition: transform 0.2s ease, color 0.2s ease;
}

.stock-expand-btn:hover {
  color: var(--text-primary);
}

.stock-expand-btn.rotated {
  transform: rotate(90deg);
}

/* ==========================================
   REPORTS TAB
   ========================================== */
.reports-layout {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.reports-filter-bar {
  display: flex;
  gap: 1rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 1rem;
  border-radius: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.filter-group label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.reports-tabs {
  display: flex;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1rem;
}

.reports-tab-btn {
  padding: 0.75rem 1.5rem;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
  border-bottom: 2px solid transparent;
  font-family: var(--font-family);
  transition: all 0.2s ease;
}

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

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

.badge-status {
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  display: inline-block;
}

.badge-status-completed {
  background-color: var(--color-success-bg);
  color: var(--color-success);
}

.badge-status-cancelled {
  background-color: var(--color-danger-bg);
  color: var(--color-danger);
}

.btn-icon {
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  width: 32px;
  height: 32px;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.btn-icon:hover {
  background-color: var(--border-hover);
}

.btn-icon.btn-icon-danger:hover {
  background-color: var(--color-danger-bg);
  color: var(--color-danger);
  border-color: var(--color-danger);
}

/* ==========================================
   MODAL WINDOWS & INTERFACES
   ========================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 2000;
  animation: fadeIn 0.3s ease;
}

.modal-container {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  width: 100%;
  max-width: 500px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  animation: floatIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-container.modal-lg {
  max-width: 800px;
}

.modal-header {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-title {
  font-size: 1.15rem;
  font-weight: 700;
}

.btn-close-modal {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
}

.btn-close-modal:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: 1.5rem;
  max-height: 70vh;
  overflow-y: auto;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

/* ==========================================
   RECEIPT DESIGN (80 * 80 MM LAYOUT)
   ========================================== */
.receipt-preview-outer {
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #cbd5e1;
  padding: 2rem;
  border-radius: 8px;
}

/* Simulated Thermal receipt paper - 80mm width standard is 302px at 96dpi */
.receipt-paper {
  background-color: #ffffff;
  color: #000000;
  width: 380px; /* Wider for screen readability, fits 80mm perfectly in print */
  padding: 20px;
  font-family: 'Sarabun', 'Inter', monospace;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  font-size: 11px;
  line-height: 1.4;
  border-radius: 2px;
}

.receipt-header {
  text-align: center;
  margin-bottom: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.receipt-logo {
  max-height: 48px;
  margin-bottom: 4px;
  filter: grayscale(100%); /* Thermal printer output representation */
}

.receipt-comp-name {
  font-weight: 700;
  font-size: 12px;
}

.receipt-store-name {
  font-weight: 800;
  font-size: 14px;
  margin-bottom: 2px;
}

.receipt-comp-info {
  font-size: 10px;
  text-align: center;
}

.receipt-divider {
  border-top: 1px dashed #000000;
  margin: 8px 0;
}

.receipt-double-divider {
  border-top: 3px double #000000;
  margin: 8px 0;
}

.receipt-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 2px;
}

.receipt-row.bold {
  font-weight: 700;
}

.receipt-section-title {
  font-weight: 700;
  margin-bottom: 4px;
  text-decoration: underline;
}

.receipt-customer-details {
  font-size: 10px;
  margin-bottom: 6px;
}

.receipt-item-table {
  width: 100%;
  margin: 6px 0;
  font-size: 10px;
}

.receipt-item-table th {
  background: transparent;
  color: #000000;
  border-bottom: 1px dashed #000000;
  padding: 4px 0;
  font-weight: 700;
}

.receipt-item-table td {
  padding: 4px 0;
  border-bottom: none;
  color: #000000;
}

.receipt-signatures {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 25px;
  text-align: center;
}

.receipt-signature-line {
  border-bottom: 1px solid #000000;
  margin-top: 20px;
  margin-bottom: 4px;
}

.receipt-footer-text {
  text-align: center;
  font-size: 10px;
  margin-top: 15px;
}

/* ==========================================
   ANIMATIONS & EFFECTS
   ========================================== */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}

/* ==========================================
   PRINT MEDIA STYLE
   ========================================== */
@media print {
  /* Hide all main system elements */
  body * {
    visibility: hidden;
  }
  
  /* Show only the receipt container */
  #receipt-print-area, #receipt-print-area * {
    visibility: visible;
  }
  
  /* Absolute position layout */
  #receipt-print-area {
    position: absolute;
    left: 0;
    top: 0;
    width: 80mm;
    min-height: 80mm; /* Keep exact dimensions */
    padding: 3mm;
    margin: 0;
    background: #ffffff;
    color: #000000;
    box-shadow: none;
  }
  
  .receipt-paper {
    width: 100% !important;
    max-width: 100% !important;
    box-shadow: none !important;
    padding: 0 !important;
    margin: 0 !important;
    background: transparent !important;
    color: #000000 !important;
    font-size: 8pt !important;
  }

  .receipt-logo {
    max-height: 35px !important;
  }

  .receipt-header, .receipt-comp-info, .receipt-customer-details, .receipt-item-table th, .receipt-item-table td, .receipt-row, .receipt-signatures, .receipt-footer-text {
    color: #000000 !important;
  }
  
  @page {
    size: 80mm auto; /* Configures thermal paper */
    margin: 0;
  }
}

/* ==========================================
   CUSTOMER DISPLAY RATE BOARD (TV SCREEN VIEW)
   ========================================== */
.customer-board {
  position: fixed;
  inset: 0;
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
  color: #0f172a;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  padding: 2rem;
  overflow-y: auto;
  animation: fadeIn 0.3s ease;
}

.board-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  border-bottom: 2px solid #cbd5e1;
  padding-bottom: 1rem;
}

.board-logo-area {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.board-logo {
  height: 55px;
  width: auto;
}

.board-title-text {
  font-size: 1.8rem;
  font-weight: 800;
  color: #0f172a;
  letter-spacing: 0.5px;
}

.board-subtitle-text {
  font-size: 0.9rem;
  color: var(--color-gold-dark);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.board-datetime {
  text-align: right;
  font-size: 1.15rem;
  font-weight: 600;
  color: #475569;
}

.board-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  flex-grow: 1;
}

.board-column {
  background-color: #ffffff;
  border: 1px solid #bfdbfe;
  border-radius: 12px;
  padding: 1.25rem;
  box-shadow: 0 10px 15px -3px rgba(37, 99, 235, 0.05);
}

.board-table {
  width: 100%;
  border-collapse: collapse;
}

.board-table th {
  background-color: #f8fafc !important;
  color: #475569 !important;
  font-size: 0.75rem !important;
  font-weight: 700 !important;
  text-transform: uppercase !important;
  padding: 0.4rem 0.5rem !important;
  border-bottom: 2px solid #cbd5e1 !important;
  text-align: center !important;
}

.board-table td {
  padding: 0.4rem 0.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-bottom: 1px solid #f1f5f9;
  text-align: center;
  color: #0f172a;
}

.board-rate-buy {
  color: #047857 !important; /* Rich Green */
  font-weight: 700;
  font-size: 1.05rem;
}

.board-rate-sell {
  color: #b91c1c !important; /* Rich Red */
  font-weight: 700;
  font-size: 1.05rem;
}

.btn-board-back {
  background-color: #e2e8f0;
  color: #0f172a;
  border: 1px solid #cbd5e1;
  padding: 0.5rem 1rem;
  font-weight: 700;
  font-size: 0.85rem;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: all 0.2s ease;
}

.btn-board-back:hover {
  background-color: #cbd5e1;
}

/* ==========================================
   BALANCE SHEET & USER MANAGEMENT STYLES
   ========================================== */
.balance-sheet-layout {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.balance-column-box {
  background: var(--bg-card);
  padding: 1rem;
  border-radius: 8px;
}

.balance-data-table td {
  font-size: 0.9rem;
}

.users-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1.5rem;
}

.balance-sheet-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.bot-report-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.customer-history-summary-box {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1rem;
  background-color: var(--bg-main);
  padding: 1rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

/* ==========================================
   MOBILE & TABLET RESPONSIVE STYLES
   ========================================== */
@media (max-width: 1024px) {
  /* Sidebar toggle button visible */
  .sidebar-toggle-btn {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    width: 40px;
    height: 40px;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    z-index: 1100; /* Ensure button sits above content */
  }
  
  .sidebar-toggle-btn:hover {
    background: var(--bg-main);
  }

  .sidebar-toggle-btn i {
    pointer-events: none; /* Make click bubble up to button */
  }

  .sidebar-close-btn {
    display: inline-flex !important;
  }

  /* Sidebar styling for mobile (drawer effect) */
  .sidebar {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    width: 280px;
    z-index: 1500;
    transform: translateX(-100%);
    visibility: hidden; /* Prevent touch events from blocking click flow when closed */
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 4px 0 16px rgba(0, 0, 0, 0.15);
  }

  .sidebar.open {
    transform: translateX(0);
    visibility: visible;
  }

  /* Overlay backdrop */
  .sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 1400;
    opacity: 0;
    transition: opacity 0.3s ease;
  }

  .sidebar-overlay.open {
    display: block;
    opacity: 1;
  }

  /* Main content shifts to full width */
  .main-content {
    margin-left: 0 !important;
    width: 100% !important;
    padding: 1.5rem !important;
  }

  /* Layout grids to 1 column */
  .dashboard-details-grid,
  .txn-grid,
  .stock-layout,
  .users-layout,
  .balance-sheet-grid,
  .board-grid {
    grid-template-columns: 1fr !important;
    gap: 1.5rem !important;
  }
}

@media (max-width: 768px) {
  /* Metrics grids to 2 columns on mobile/tablet */
  .stats-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 1rem !important;
  }

  .form-row,
  .rates-grid-container,
  .bot-report-grid {
    grid-template-columns: 1fr !important;
    gap: 1.25rem !important;
  }

  .bot-report-grid .form-group {
    grid-column: span 1 !important;
  }

  .txn-mode-selector {
    grid-template-columns: 1fr !important;
    gap: 0.75rem !important;
  }
  
  .page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
  
  .period-tabs {
    width: 100%;
    overflow-x: auto;
    white-space: nowrap;
    padding-bottom: 0.5rem;
  }

  /* Modal responsive sizing */
  .modal-container {
    width: 95% !important;
    margin: 1rem auto;
  }

  /* Customer exchange rate board (TV view) responsiveness on smaller screens */
  .board-header {
    flex-direction: column !important;
    align-items: center !important;
    text-align: center !important;
    gap: 1rem !important;
  }

  .board-logo-area {
    flex-direction: column !important;
    align-items: center !important;
    text-align: center !important;
    gap: 0.5rem !important;
  }

  .board-title-text {
    font-size: 1.4rem !important;
    text-align: center !important;
  }

  .board-subtitle-text {
    font-size: 0.8rem !important;
    text-align: center !important;
  }

  .board-header > div:last-child {
    flex-direction: column !important;
    gap: 0.75rem !important;
    width: 100% !important;
    align-items: center !important;
  }

  .board-datetime {
    text-align: center !important;
    font-size: 1rem !important;
  }

  .board-grid {
    grid-template-columns: 1fr !important;
    gap: 1.5rem !important;
  }
}

@media (max-width: 480px) {
  /* Metrics grids to 1 column on very small mobile screens */
  .stats-grid {
    grid-template-columns: 1fr !important;
  }

  .main-content {
    padding: 1rem !important;
  }

  /* Adjust buttons size on mobile */
  .btn,
  .btn-primary,
  .btn-secondary,
  .btn-success,
  .btn-danger {
    width: 100% !important;
    justify-content: center !important;
  }

  .txn-actions,
  .thb-stock-actions {
    flex-direction: column !important;
    gap: 0.75rem !important;
  }

  .customer-history-summary-box {
    flex-direction: column !important;
    text-align: left !important;
    gap: 0.75rem !important;
  }

  .customer-history-summary-box > div:last-child {
    text-align: left !important;
  }

  /* Receipt Modal dimensions on mobile */
  .receipt-preview-outer {
    padding: 0.5rem !important;
    max-width: 100% !important;
    overflow-x: auto !important;
  }

  .receipt-paper {
    width: 320px !important;
    padding: 12px !important;
  }
}