@import "https://fonts.googleapis.com/css2?family=Sarabun:wght@300;400;500;600;700&display=swap";:root{--color-primary:#1e3a8a;--color-primary-light:#3b82f6;--color-primary-dark:#172554;--color-accent:#fde047;--color-accent-dark:#eab308;--color-bg-base:#f9fafb;--color-bg-paper:#fff;--color-text-main:#1f2937;--color-text-muted:#6b7280;--color-text-light:#9ca3af;--color-border:#e5e7eb;--color-success:#10b981;--color-warning:#f59e0b;--color-error:#ef4444;--font-family-base:"Sarabun", sans-serif;--spacing-1:.25rem;--spacing-2:.5rem;--spacing-3:.75rem;--spacing-4:1rem;--spacing-5:1.25rem;--spacing-6:1.5rem;--spacing-8:2rem;--radius-sm:.25rem;--radius-md:.375rem;--radius-lg:.5rem;--radius-xl:.75rem;--shadow-sm:0 1px 2px 0 #0000000d;--shadow-md:0 4px 6px -1px #0000001a, 0 2px 4px -1px #0000000f;--shadow-lg:0 10px 15px -3px #0000001a, 0 4px 6px -2px #0000000d}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family-base);background-color:var(--color-bg-base);color:var(--color-text-main);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:16px;line-height:1.6}h1,h2,h3,h4,h5,h6{color:var(--color-primary-dark);margin-bottom:var(--spacing-4);font-weight:600;line-height:1.2}h1{font-size:2.25rem}h2{font-size:1.875rem}h3{font-size:1.5rem}h4{font-size:1.25rem}p{margin-bottom:var(--spacing-4)}a{color:var(--color-primary);text-decoration:none;transition:color .2s}a:hover{color:var(--color-primary-light)}button{cursor:pointer;background:0 0;border:none;font-family:inherit}.container{width:100%;max-width:1200px;padding:0 var(--spacing-4);margin:0 auto}.card{background-color:var(--color-bg-paper);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:var(--spacing-6);border:1px solid var(--color-border);transition:box-shadow .3s}.card:hover{box-shadow:var(--shadow-md)}.btn{padding:var(--spacing-2) var(--spacing-4);border-radius:var(--radius-md);justify-content:center;align-items:center;font-size:1rem;font-weight:500;transition:all .2s;display:inline-flex}.btn-primary{background-color:var(--color-primary);color:#fff}.btn-primary:hover{background-color:var(--color-primary-dark)}.btn-accent{background-color:var(--color-accent);color:var(--color-text-main)}.btn-accent:hover{background-color:var(--color-accent-dark)}.btn-outline{border:1px solid var(--color-primary);color:var(--color-primary);background-color:#0000}.btn-outline:hover{background-color:var(--color-primary);color:#fff}.text-center{text-align:center}.mt-4{margin-top:var(--spacing-4)}.mb-4{margin-bottom:var(--spacing-4)}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.gap-2{gap:var(--spacing-2)}.gap-4{gap:var(--spacing-4)}.layout-container{height:100vh;display:flex;position:relative;overflow:hidden}.sidebar{background-color:var(--color-bg-paper);border-right:1px solid var(--color-border);z-index:1000;flex-direction:column;width:250px;transition:transform .3s;display:flex}.sidebar-header{padding:var(--spacing-6) var(--spacing-4);border-bottom:1px solid var(--color-border)}.sidebar-header h2{margin-bottom:var(--spacing-1);color:var(--color-primary)}.sidebar-header p{color:var(--color-text-muted);margin-bottom:0;font-size:.875rem}.nav-list{padding:var(--spacing-4) 0;flex-grow:1;list-style:none;overflow-y:auto}.nav-item{margin-bottom:var(--spacing-1)}.nav-link{align-items:center;gap:var(--spacing-3);padding:var(--spacing-3) var(--spacing-6);color:var(--color-text-main);text-decoration:none;transition:all .2s;display:flex}.nav-link span{white-space:nowrap}.nav-link:hover{background-color:var(--color-bg-base);color:var(--color-primary)}.nav-link.active{background-color:var(--color-primary-light);color:#fff;border-left:4px solid var(--color-primary-dark)}.sidebar-footer{padding:var(--spacing-4);border-top:1px solid var(--color-border);text-align:center;font-size:.875rem}.main-content{flex-direction:column;flex-grow:1;width:100%;display:flex;overflow:hidden}.topbar{padding:var(--spacing-4) var(--spacing-6);background-color:var(--color-bg-paper);border-bottom:1px solid var(--color-border);justify-content:space-between;align-items:center;display:flex}.topbar-title h3{margin-bottom:0}.page-content{padding:var(--spacing-6);flex-grow:1;overflow-y:auto}.mobile-menu-btn{cursor:pointer;color:var(--color-text-main);background:0 0;border:none;display:none}.mobile-close-btn{cursor:pointer;color:var(--color-text-muted);background:0 0;border:none;display:none}.mobile-overlay{z-index:999;background-color:#00000080;display:none;position:fixed;inset:0}@media (width<=768px){.sidebar{position:fixed;top:0;bottom:0;left:0;transform:translate(-100%);box-shadow:2px 0 8px #0000001a}.sidebar.open{transform:translate(0)}.mobile-menu-btn,.mobile-close-btn,.mobile-overlay{display:block}.topbar{padding:var(--spacing-3) var(--spacing-4)}.page-content{padding:var(--spacing-4)}}