/* CSS Design System - BSP39 Finance System */

:root {
  /* Color Palette - Premium Dark Theme */
  --bg-primary: #0b0f19;
  --bg-secondary: #121824;
  --bg-sidebar: rgba(13, 20, 35, 0.95);
  --bg-card: rgba(21, 31, 52, 0.7);
  --bg-card-hover: rgba(27, 40, 68, 0.9);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(59, 130, 246, 0.5);
  
  /* Text colors */
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  /* Accent Colors */
  --color-primary: #3b82f6;      /* Electric Blue */
  --color-primary-hover: #2563eb;
  --color-income: #10b981;       /* Emerald Green */
  --color-income-glow: rgba(16, 185, 129, 0.15);
  --color-expense: #f43f5e;      /* Coral Red */
  --color-expense-glow: rgba(244, 63, 94, 0.15);
  --color-warning: #f59e0b;      /* Amber / Oil */
  --color-ev: #8b5cf6;           /* Violet / EV */
  
  /* Shadows & Glassmorphism */
  --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
  --glass-blur: blur(12px);
  --transition-speed: 0.25s;
}

/* Base Reset */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Inter', 'Sarabun', sans-serif;
}

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

/* Layout Container */
.app-container {
  display: flex;
  width: 100vw;
  height: 100vh;
}

/* ------------------ SIDEBAR ------------------ */
.sidebar {
  position: fixed;
  top: 0;
  bottom: 0;
  left: -280px; /* ซ่อนไปทางซ้ายของหน้าจอโดยเริ่มต้น */
  width: 280px;
  height: 100vh;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  backdrop-filter: var(--glass-blur);
  z-index: 1000;
  transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: none;
}

.sidebar.active {
  left: 0; /* เลื่อนเข้ามาแสดงผล */
  box-shadow: 5px 0 25px rgba(0, 0, 0, 0.5);
}

.sidebar-header {
  padding: 24px;
  border-bottom: 1px solid var(--border-color);
}

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

.logo-icon {
  width: 32px;
  height: 32px;
  color: var(--color-primary);
}

.logo-text h2 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  background: linear-gradient(135deg, #ffffff 0%, var(--color-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-text span {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 600;
}

/* Month Selector in Sidebar */
.sidebar-month-selector {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
}

.sidebar-month-selector label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.sidebar-month-selector label i {
  width: 14px;
  height: 14px;
  color: var(--color-primary);
}

.select-wrapper {
  position: relative;
}

.custom-select {
  width: 100%;
  padding: 10px 14px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 500;
  appearance: none;
  cursor: pointer;
  transition: all var(--transition-speed);
}

.custom-select:focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.select-wrapper::after {
  content: '▼';
  font-size: 0.75rem;
  color: var(--text-secondary);
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
}

/* Sidebar Nav Links */
.sidebar-nav {
  flex-grow: 1;
  padding: 20px 16px;
  overflow-y: auto;
}

.sidebar-nav ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.nav-item a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 500;
  transition: all var(--transition-speed);
}

.nav-item a i {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-speed);
}

.nav-item:hover a {
  background-color: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
}

.nav-item:hover a i {
  transform: translateX(2px);
}

.nav-item.active a {
  background-color: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
  font-weight: 600;
  border-left: 3px solid var(--color-primary);
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}

.sidebar-footer {
  padding: 24px;
  border-top: 1px solid var(--border-color);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.data-status-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
  color: var(--color-income);
}

.status-dot {
  width: 6px;
  height: 6px;
  background-color: var(--color-income);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--color-income);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.9); opacity: 0.5; }
  50% { transform: scale(1.2); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.5; }
}

/* ------------------ MAIN CONTENT ------------------ */
.main-content {
  flex-grow: 1;
  height: 100%;
  overflow-y: auto;
  padding: 30px 40px;
  display: flex;
  flex-direction: column;
  gap: 30px;
  background-color: var(--bg-primary);
}

.main-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 20px;
}

.header-title-area h1 {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.header-title-area .subtitle {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-top: 4px;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition-speed);
}

.btn-primary {
  background-color: var(--color-primary);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  box-shadow: 0 0 12px rgba(59, 130, 246, 0.4);
}

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

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

.btn-danger {
  background-color: var(--color-expense);
  color: #ffffff;
}

.btn-danger:hover {
  background-color: #e11d48;
  box-shadow: 0 0 12px rgba(244, 63, 94, 0.4);
}

/* Tab contents - Hide by default, show when active */
.tab-content {
  display: none;
  flex-direction: column;
  gap: 30px;
  animation: fadeIn 0.3s ease-in-out;
}

.tab-content.active {
  display: flex;
}

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

/* ------------------ KPI GRID ------------------ */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  backdrop-filter: var(--glass-blur);
  transition: transform var(--transition-speed), border-color var(--transition-speed);
}

.kpi-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.15);
}

.kpi-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.kpi-icon i {
  width: 24px;
  height: 24px;
}

.kpi-data {
  display: flex;
  flex-direction: column;
}

.kpi-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 500;
  text-transform: uppercase;
}

.kpi-data h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 4px;
}

/* KPI themes */
.kpi-card.income .kpi-icon {
  background-color: var(--color-income-glow);
  color: var(--color-income);
}
.kpi-card.income h3 {
  color: var(--color-income);
}

.kpi-card.expense .kpi-icon {
  background-color: var(--color-expense-glow);
  color: var(--color-expense);
}
.kpi-card.expense h3 {
  color: var(--color-expense);
}

.kpi-card.profit .kpi-icon {
  background-color: rgba(59, 130, 246, 0.1);
  color: var(--color-primary);
}
.kpi-card.profit h3 {
  color: var(--text-primary);
}

.kpi-card.annual-profit .kpi-icon {
  background-color: rgba(139, 92, 246, 0.1);
  color: var(--color-ev);
}
.kpi-card.annual-profit h3 {
  color: #a78bfa;
}

/* ------------------ CHARTS CONTAINER ------------------ */
.charts-container {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
}

@media (max-width: 1200px) {
  .charts-container {
    grid-template-columns: 1fr;
  }
}

.chart-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 24px;
  backdrop-filter: var(--glass-blur);
  display: flex;
  flex-direction: column;
  min-height: 380px;
}

.chart-header {
  margin-bottom: 20px;
}

.chart-header h3 {
  font-size: 1.1rem;
  font-weight: 600;
}

.chart-body {
  flex-grow: 1;
  position: relative;
  width: 100%;
  height: 100%;
}

/* ------------------ SUMMARY SECTIONS ------------------ */
.summary-section {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.section-header {
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 10px;
}

.section-header h3 {
  font-size: 1.2rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-header h3 i {
  color: var(--color-primary);
  width: 20px;
  height: 20px;
}

.grid-three-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

@media (max-width: 900px) {
  .grid-three-columns {
    grid-template-columns: 1fr;
  }
}

.service-summary-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  transition: transform var(--transition-speed), border-color var(--transition-speed);
}

.service-summary-card:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.12);
}

.service-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 16px;
}

.service-header h4 {
  font-size: 0.95rem;
  font-weight: 600;
  max-width: 70%;
}

.service-badge {
  font-size: 0.7rem;
  padding: 4px 8px;
  border-radius: 6px;
  font-weight: 700;
}

.c-biomass { background-color: rgba(16, 185, 129, 0.15); color: var(--color-income); }
.c-oem { background-color: rgba(245, 158, 11, 0.15); color: var(--color-warning); }
.c-ac { background-color: rgba(59, 130, 246, 0.15); color: var(--color-primary); }

.service-stats {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.stat-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.stat-row strong {
  color: var(--text-primary);
}

.stat-row.divider {
  border-top: 1px dashed var(--border-color);
  padding-top: 8px;
  margin-top: 4px;
}

.stat-row.divider strong {
  color: var(--color-income);
}

/* ------------------ TABLES ------------------ */
.table-container {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  background-color: var(--bg-secondary);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

.data-table th {
  background-color: rgba(13, 20, 35, 0.6);
  color: var(--text-secondary);
  font-weight: 600;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-color);
}

.data-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
  vertical-align: middle;
}

.data-table tbody tr:last-child td {
  border-bottom: none;
}

.data-table tbody tr:hover {
  background-color: rgba(255, 255, 255, 0.02);
}

.text-right { text-align: right; }
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-income { color: var(--color-income); font-weight: 600; }
.text-expense { color: var(--color-expense); font-weight: 600; }
.text-warning { color: var(--color-warning); font-weight: 600; }
.text-info { color: var(--color-primary); font-weight: 600; }

.status-pill {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
}

.status-pill.ongoing { background-color: rgba(245, 158, 11, 0.15); color: var(--color-warning); }
.status-pill.completed { background-color: rgba(16, 185, 129, 0.15); color: var(--color-income); }
.status-pill.cancelled { background-color: rgba(244, 63, 94, 0.15); color: var(--color-expense); }

/* ------------------ LEDGER LAYOUT ------------------ */
.ledger-layout {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 24px;
}

@media (max-width: 1100px) {
  .ledger-layout {
    grid-template-columns: 1fr;
  }
}

.ledger-form-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 24px;
  backdrop-filter: var(--glass-blur);
  height: fit-content;
  position: sticky;
  top: 20px;
}

.card-header {
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 12px;
}

.card-header h3 {
  font-size: 1.1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-header h3 i {
  color: var(--color-primary);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 18px;
}

.form-row {
  display: flex;
  gap: 16px;
}

.form-group.half {
  width: 50%;
}

.form-group.double {
  flex-grow: 2;
}

label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.required {
  color: var(--color-expense);
}

input[type="text"],
input[type="number"],
input[type="date"],
select {
  padding: 10px 14px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: all var(--transition-speed);
}

input:focus,
select:focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: 0 0 0 2px var(--border-focus);
}

.partner-selector-container {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.partner-type-hint {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 10px;
}

.hidden {
  display: none !important;
}

/* Ledger Table Card */
.ledger-table-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 24px;
  backdrop-filter: var(--glass-blur);
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.card-header-table {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

.table-title {
  display: flex;
  align-items: center;
  gap: 10px;
}

.table-title h3 {
  font-size: 1.1rem;
  font-weight: 600;
}

.badge {
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 20px;
  font-weight: 600;
}

.badge-info { background-color: rgba(59, 130, 246, 0.15); color: #60a5fa; }
.badge-purple { background-color: rgba(139, 92, 246, 0.15); color: #a78bfa; }

.table-search input {
  padding: 8px 14px;
  font-size: 0.85rem;
  width: 220px;
}

.table-summary-bar {
  display: flex;
  justify-content: space-around;
  padding: 16px;
  background-color: rgba(13, 20, 35, 0.4);
  border: 1px solid var(--border-color);
  border-top: none;
  border-bottom-left-radius: 12px;
  border-bottom-right-radius: 12px;
  font-size: 0.9rem;
  flex-wrap: wrap;
  gap: 16px;
}

.table-summary-bar.flex-end {
  justify-content: flex-end;
  gap: 24px;
}

.summary-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.summary-item span {
  color: var(--text-secondary);
}

.border-left {
  border-left: 1px solid var(--border-color);
  padding-left: 20px;
}

/* Edit / Delete Buttons */
.btn-icon {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px;
  border-radius: 6px;
  transition: all var(--transition-speed);
}

.btn-icon:hover {
  background-color: rgba(255, 255, 255, 0.05);
}

.btn-icon.edit:hover { color: var(--color-primary); }
.btn-icon.delete:hover { color: var(--color-expense); }

/* Custom alerts */
.alert-box-info {
  background-color: rgba(59, 130, 246, 0.08);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 8px;
  padding: 12px;
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.alert-box-info i {
  color: var(--color-primary);
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 2px;
}

.alert-box-info p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* ------------------ PARTNER FILTER TABS ------------------ */
.table-tabs {
  display: flex;
  gap: 6px;
  background-color: var(--bg-secondary);
  padding: 4px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.table-tab-btn {
  background: none;
  border: none;
  padding: 6px 12px;
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  border-radius: 6px;
  transition: all var(--transition-speed);
}

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

.table-tab-btn.active {
  background-color: var(--bg-card);
  color: var(--text-primary);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

/* ------------------ SETTINGS PAGE ------------------ */
.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
  gap: 24px;
}

@media (max-width: 600px) {
  .settings-grid {
    grid-template-columns: 1fr;
  }
}

.settings-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 24px;
  backdrop-filter: var(--glass-blur);
}

.settings-card.full-width {
  grid-column: 1 / -1;
}

.settings-card .card-body {
  padding-top: 15px;
}

.input-with-hint {
  display: flex;
  align-items: center;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding-left: 14px;
}

.input-with-hint input {
  border: none;
  background: none;
  width: 100%;
}

.input-with-hint input:focus {
  box-shadow: none;
}

.currency-symbol {
  color: var(--text-muted);
  font-weight: 600;
}

.settings-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.card-divider {
  border: 0;
  border-top: 1px solid var(--border-color);
  margin: 15px 0;
}

.category-guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.guide-item {
  background-color: rgba(13, 20, 35, 0.4);
  padding: 12px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.guide-item strong {
  display: block;
  font-size: 0.85rem;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.guide-item p {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* Custom Scrollbar for premium feel */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* ------------------ MODAL DIALOG STYLES (NEW) ------------------ */
.full-width-layout {
  display: flex;
  flex-direction: column;
  gap: 24px;
  width: 100%;
}

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

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(11, 15, 25, 0.8);
  backdrop-filter: blur(8px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.modal-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  width: 90%;
  max-width: 550px;
  box-shadow: var(--card-shadow);
  transform: scale(0.9);
  transition: transform 0.3s ease;
  overflow: hidden;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
}

.modal-overlay.active .modal-container {
  transform: scale(1);
}

.modal-header {
  padding: 16px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: rgba(13, 20, 35, 0.4);
}

.modal-header h3 {
  font-size: 1.1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.modal-header h3 i {
  color: var(--color-primary);
  width: 20px;
  height: 20px;
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
}

.close-modal-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 1.8rem;
  line-height: 1;
  padding: 0 4px;
  transition: color var(--transition-speed);
}

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

/* ------------------ RESPONSIVE SIDEBAR & TOGGLE BUTTONS ------------------ */
.sidebar-toggle-btn {
  display: flex; /* แสดงเสมอในทุกขนาดหน้าจอ */
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-speed);
  margin-right: 12px;
  flex-shrink: 0;
}

.sidebar-toggle-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-primary);
}

.sidebar-toggle-btn i {
  width: 20px;
  height: 20px;
}

.sidebar-close-btn {
  display: flex; /* แสดงปุ่มปิดในแถบเมนูเสมอ */
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px;
  transition: color var(--transition-speed);
  margin-left: auto;
}

.sidebar-close-btn:hover {
  color: var(--color-expense);
}

.sidebar-close-btn i {
  width: 20px;
  height: 20px;
}

.sidebar-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(11, 15, 25, 0.6);
  backdrop-filter: blur(4px);
  z-index: 998;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.sidebar-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.header-title-area {
  display: flex;
  align-items: center;
}

/* @media สำหรับแสดงผลในแท็บเล็ตและมือถือ */
@media (max-width: 992px) {
  .main-content {
    padding: 20px 16px; /* ลด Padding เพื่อประหยัดพื้นที่แสดงผลในมือถือ */
  }

  .main-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .header-actions {
    width: 100%;
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: 10px;
  }

  .header-actions button {
    flex-grow: 1;
  }
  
  .settings-grid {
    grid-template-columns: 1fr;
  }
}