/* ธีมสีมืดและสีส้ม (ค่าเริ่มต้น) */
:root {
    --primary-color: #ff6b35;
    --secondary-color: #ff8c42;
    --accent-color: #ffa726;
    --background-color: #1a1a1a;
    --surface-color: #2d2d2d;
    --text-color: #ffffff;
    --text-secondary: #cccccc;
    --border-color: #404040;
    --hover-color: #3d3d3d;
    --sidebar-width: 250px;
    --sidebar-collapsed-width: 60px;
    --topbar-height: 60px;
}

/* ธีมสีสว่างและสีส้ม */
body.light-theme {
    --primary-color: #ff6b35;
    --secondary-color: #ff8c42;
    --accent-color: #ffa726;
    --background-color: #f5f5f5;
    --surface-color: #ffffff;
    --text-color: #333333;
    --text-secondary: #666666;
    --border-color: #e0e0e0;
    --hover-color: #f0f0f0;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    transition: all 0.3s ease;
}

/* Sidebar Styles */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background-color: var(--surface-color);
    border-right: 1px solid var(--border-color);
    transition: all 0.3s ease;
    z-index: 1000;
    overflow-y: auto;
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed-width);
}

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

.sidebar-header h3 {
    color: var(--primary-color);
    font-size: 1.2rem;
    white-space: nowrap;
    overflow: hidden;
}

.sidebar.collapsed .sidebar-header h3 {
    display: none;
}

.sidebar-toggle {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

.sidebar-toggle:hover {
    background-color: var(--hover-color);
}

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

.nav-item {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.nav-item:hover {
    background-color: var(--hover-color);
    border-left-color: var(--primary-color);
}

.nav-item.active {
    background-color: var(--primary-color);
    color: white;
    border-left-color: var(--secondary-color);
}

.nav-icon {
    font-size: 1.2rem;
    margin-right: 0.75rem;
    min-width: 1.5rem;
    text-align: center;
}

.nav-text {
    white-space: nowrap;
    overflow: hidden;
    transition: opacity 0.3s ease;
}

.sidebar.collapsed .nav-text {
    opacity: 0;
    width: 0;
}

.sidebar.collapsed .nav-icon {
    margin-right: 0;
}

.sidebar-footer {
    border-top: 1px solid var(--border-color);
    padding: 1rem 0;
}

.nav-item.logout {
    color: #ff4757;
}

.nav-item.logout:hover {
    background-color: rgba(255, 71, 87, 0.1);
    border-left-color: #ff4757;
}

/* Main Content */
.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    transition: margin-left 0.3s ease;
}

.main-content.sidebar-collapsed {
    margin-left: var(--sidebar-collapsed-width);
}

/* Top Bar */
.top-bar {
    height: var(--topbar-height);
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1.5rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

.top-bar-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.top-bar-left h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.theme-toggle,
.fullscreen-toggle {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

.theme-toggle:hover,
.fullscreen-toggle:hover {
    background-color: var(--hover-color);
}

.user-info {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.mobile-only {
    display: none;
}

/* Content Area */
.content-area {
    padding: 2rem;
}

.welcome-card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.welcome-card h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.user-info-detail {
    margin-top: 1.5rem;
    padding: 1rem;
    background-color: var(--background-color);
    border-radius: 6px;
    border-left: 4px solid var(--primary-color);
}

.user-info-detail h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.feature-card h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.feature-card p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    border-radius: 6px;
    transition: background-color 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 0.9rem;
}

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

/* Form Styles */
.form-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 2rem;
    background: linear-gradient(135deg, var(--background-color) 0%, var(--surface-color) 100%);
}

.form-card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2.5rem;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.form-card h2 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 2rem;
    font-size: 1.8rem;
}

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

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

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--background-color);
    color: var(--text-color);
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-links {
    text-align: center;
    margin-top: 1.5rem;
}

.form-links a {
    color: var(--primary-color);
    text-decoration: none;
}

.form-links a:hover {
    text-decoration: underline;
}

.error-message {
    background-color: #ff4757;
    color: white;
    padding: 0.75rem;
    border-radius: 6px;
    margin-bottom: 1rem;
    text-align: center;
}

.success-message {
    background-color: #2ed573;
    color: white;
    padding: 0.75rem;
    border-radius: 6px;
    margin-bottom: 1rem;
    text-align: center;
}

/* Table Styles */
.table-container {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 2rem;
}

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

.table th,
.table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    background-color: var(--primary-color);
    color: white;
    font-weight: 600;
}

.table tr:hover {
    background-color: var(--hover-color);
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
    margin-right: 0.5rem;
}

.btn-danger {
    background-color: #ff4757;
}

.btn-danger:hover {
    background-color: #ff3838;
}

.btn-warning {
    background-color: #ffa726;
}

.btn-warning:hover {
    background-color: #ff9800;
}

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        width: var(--sidebar-width);
    }

    .sidebar.show {
        transform: translateX(0);
    }

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

    .main-content.sidebar-collapsed {
        margin-left: 0;
    }

    .mobile-only {
        display: block;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .content-area {
        padding: 1rem;
    }

    .top-bar {
        padding: 0 1rem;
    }

    .top-bar-left h1 {
        font-size: 1.2rem;
    }

    .user-info {
        display: none;
    }
}

@media (max-width: 480px) {
    .form-card {
        padding: 1.5rem;
        margin: 1rem;
    }

    .welcome-card {
        padding: 1.5rem;
    }

    .table-container {
        overflow-x: auto;
    }
}

/* Animation for smooth transitions */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.content-area > * {
    animation: slideIn 0.5s ease-out;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}


/* ธีมใหม่สำหรับ data-theme attribute */
[data-theme="dark"] {
    --primary-color: #ff6b35;
    --secondary-color: #ff8c42;
    --accent-color: #ffa726;
    --background-color: #1a1a1a;
    --surface-color: #2d2d2d;
    --text-color: #ffffff;
    --text-secondary: #cccccc;
    --border-color: #404040;
    --hover-color: #3d3d3d;
}

[data-theme="light"] {
    --primary-color: #ff6b35;
    --secondary-color: #ff8c42;
    --accent-color: #ffa726;
    --background-color: #f5f5f5;
    --surface-color: #ffffff;
    --text-color: #333333;
    --text-secondary: #666666;
    --border-color: #e0e0e0;
    --hover-color: #f0f0f0;
}

/* รองรับทั้งสองระบบ */
body[data-theme="dark"],
body:not(.light-theme) {
    --primary-color: #ff6b35;
    --secondary-color: #ff8c42;
    --accent-color: #ffa726;
    --background-color: #1a1a1a;
    --surface-color: #2d2d2d;
    --text-color: #ffffff;
    --text-secondary: #cccccc;
    --border-color: #404040;
    --hover-color: #3d3d3d;
}

body[data-theme="light"],
body.light-theme {
    --primary-color: #ff6b35;
    --secondary-color: #ff8c42;
    --accent-color: #ffa726;
    --background-color: #f5f5f5;
    --surface-color: #ffffff;
    --text-color: #333333;
    --text-secondary: #666666;
    --border-color: #e0e0e0;
    --hover-color: #f0f0f0;
}