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

/* ตัวแปร CSS สำหรับสีธีม */
:root {
  --primary-green: #2e7d2e;
  --light-green: #4caf50;
  --dark-green: #1b5e20;
  --accent-green: #66bb6a;
  --light-gray: #f5f5f5;
  --white: #ffffff;
  --text-dark: #333333;
  --text-light: #666666;
  --border-color: #ddd;
  --shadow: 0 2px 10px rgba(0,0,0,0.1);
  --sidebar-width: 250px;
}

/* Reset และ Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Sarabun', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--light-gray);
}

/* Layout หลัก */
.main-wrapper {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: var(--sidebar-width);
  background: linear-gradient(135deg, var(--primary-green) 0%, var(--dark-green) 100%);
  color: var(--white);
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  overflow-y: auto;
  transition: all 0.3s ease;
  z-index: 1000;
}

.sidebar.collapsed {
  margin-left: calc(-1 * var(--sidebar-width));
}

.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  transition: all 0.3s ease;
  min-height: 100vh;
}

.main-content.expanded {
  margin-left: 0;
}

/* Header */
.topbar {
  background: var(--white);
  box-shadow: var(--shadow);
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
}

.page-title {
  color: var(--primary-green);
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0;
}

/* Sidebar Styles */
.sidebar-brand {
  padding: 2rem 1.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  text-align: center;
}

.sidebar-brand h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.sidebar-brand p {
  font-size: 0.9rem;
  opacity: 0.8;
  margin: 0;
}

.sidebar-nav {
  padding: 1rem 0;
}

.nav-item {
  margin-bottom: 0.5rem;
}

.nav-link {
  display: flex;
  align-items: center;
  padding: 0.75rem 1.5rem;
  color: var(--white);
  text-decoration: none;
  transition: all 0.3s ease;
  border-left: 3px solid transparent;
}

.nav-link:hover {
  background: rgba(255,255,255,0.1);
  border-left-color: var(--accent-green);
  color: var(--white);
  text-decoration: none;
}

.nav-link.active {
  background: rgba(255,255,255,0.15);
  border-left-color: var(--white);
}

.nav-link i {
  width: 20px;
  margin-right: 0.75rem;
  font-size: 1.1rem;
}

/* Cards */
.card {
  background: var(--white);
  border-radius: 10px;
  box-shadow: var(--shadow);
  border: none;
  margin-bottom: 2rem;
}

.card-header {
  background: linear-gradient(135deg, var(--primary-green) 0%, var(--light-green) 100%);
  color: var(--white);
  border-radius: 10px 10px 0 0;
  padding: 1.25rem;
  border: none;
}

.card-title {
  margin: 0;
  font-weight: 600;
  font-size: 1.1rem;
}

.card-body {
  padding: 2rem;
}

/* Stats Cards */
.stats-card {
  background: var(--white);
  border-radius: 10px;
  padding: 1.5rem;
  box-shadow: var(--shadow);
  text-align: center;
  border-left: 4px solid var(--primary-green);
  transition: transform 0.3s ease;
}

.stats-card:hover {
  transform: translateY(-3px);
}

.stats-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-green);
  margin-bottom: 0.5rem;
}

.stats-label {
  color: var(--text-light);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Forms */
.form-group {
  margin-bottom: 1.5rem;
}

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

.form-control {
  border: 2px solid var(--border-color);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  transition: all 0.3s ease;
  font-family: 'Sarabun', sans-serif;
}

.form-control:focus {
  border-color: var(--primary-green);
  box-shadow: 0 0 0 0.2rem rgba(46, 125, 46, 0.25);
  outline: none;
}

.form-select {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m1 6 7 7 7-7'/%3e%3c/svg%3e");
}

/* Buttons */
.btn {
  border-radius: 8px;
  padding: 0.75rem 1.5rem;
  font-weight: 500;
  transition: all 0.3s ease;
  border: 2px solid transparent;
  font-family: 'Sarabun', sans-serif;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-green) 0%, var(--light-green) 100%);
  border-color: var(--primary-green);
  color: var(--white);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--dark-green) 0%, var(--primary-green) 100%);
  border-color: var(--dark-green);
  transform: translateY(-2px);
}

.btn-success {
  background: var(--accent-green);
  border-color: var(--accent-green);
}

.btn-outline-primary {
  border-color: var(--primary-green);
  color: var(--primary-green);
  background: transparent;
}

.btn-outline-primary:hover {
  background: var(--primary-green);
  color: var(--white);
}

/* Tables */
.table {
  background: var(--white);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.table thead th {
  background: var(--primary-green);
  color: var(--white);
  border: none;
  font-weight: 600;
  padding: 1rem;
}

.table tbody td {
  padding: 1rem;
  border-top: 1px solid var(--border-color);
  vertical-align: middle;
}

.table tbody tr:hover {
  background: rgba(46, 125, 46, 0.05);
}

/* Alerts */
.alert {
  border-radius: 8px;
  border: none;
  padding: 1rem 1.5rem;
  margin-bottom: 1.5rem;
}

.alert-success {
  background: rgba(76, 175, 80, 0.1);
  color: var(--dark-green);
  border-left: 4px solid var(--light-green);
}

.alert-danger {
  background: rgba(244, 67, 54, 0.1);
  color: #c62828;
  border-left: 4px solid #f44336;
}

.alert-warning {
  background: rgba(255, 193, 7, 0.1);
  color: #f57c00;
  border-left: 4px solid #ffc107;
}

/* Login Page */
.login-container {
  min-height: 100vh;
  background: linear-gradient(135deg, var(--primary-green) 0%, var(--light-green) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.login-card {
  background: var(--white);
  border-radius: 15px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
  overflow: hidden;
  max-width: 400px;
  width: 100%;
}

.login-header {
  background: linear-gradient(135deg, var(--primary-green) 0%, var(--dark-green) 100%);
  color: var(--white);
  padding: 2rem;
  text-align: center;
}

.login-body {
  padding: 2rem;
}

.login-logo {
  font-size: 3rem;
  margin-bottom: 1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  .sidebar {
    margin-left: calc(-1 * var(--sidebar-width));
  }
  
  .sidebar.show {
    margin-left: 0;
  }
  
  .main-content {
    margin-left: 0;
  }
  
  .topbar {
    padding: 1rem;
  }
  
  .card-body {
    padding: 1rem;
  }
  
  .stats-card {
    margin-bottom: 1rem;
  }
  
  .stats-number {
    font-size: 2rem;
  }
}

@media (max-width: 576px) {
  .login-container {
    padding: 1rem;
  }
  
  .login-card {
    margin: 0;
  }
  
  .login-header, .login-body {
    padding: 1.5rem;
  }
  
  .page-title {
    font-size: 1.2rem;
  }
}

/* Toggle Button */
.sidebar-toggle {
  background: none;
  border: none;
  color: var(--primary-green);
  font-size: 1.2rem;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 5px;
  transition: all 0.3s ease;
}

.sidebar-toggle:hover {
  background: rgba(46, 125, 46, 0.1);
}

/* Utilities */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.pt-3 { padding-top: 1.5rem; }
.pb-3 { padding-bottom: 1.5rem; }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.justify-content-between { justify-content: space-between; }
.align-items-center { align-items: center; }

.badge {
  padding: 0.4rem 0.8rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
}

.badge-success {
  background: var(--accent-green);
  color: var(--white);
}

.badge-warning {
  background: #ffc107;
  color: var(--text-dark);
}

.badge-danger {
  background: #dc3545;
  color: var(--white);
}