@import url('https://fonts.googleapis.com/css2?family=Sarabun:wght@300;400;500;600;700;800&display=swap');

:root {
  --primary:#1d4ed8; --primary-light:#3b82f6; --primary-dark:#1e3a8a;
  --success:#16a34a; --warning:#d97706; --danger:#dc2626; --info:#0891b2;
  --bg:#f1f5f9; --card:#ffffff; --border:#e2e8f0;
  --text:#1e293b; --text-light:#64748b; --text-muted:#94a3b8;
  --sidebar-w:256px; --header-h:64px;
  --shadow:0 1px 3px rgba(0,0,0,.1); --shadow-md:0 4px 6px rgba(0,0,0,.1);
  --shadow-lg:0 10px 25px rgba(0,0,0,.12);
  --radius:10px; --radius-sm:6px; --radius-lg:16px;
  --font:'Sarabun',sans-serif;
}
[data-theme="dark"] {
  --bg:#0f172a; --card:#1e293b; --border:#334155;
  --text:#f1f5f9; --text-light:#94a3b8; --text-muted:#64748b;
}
*{box-sizing:border-box;margin:0;padding:0}
html{font-size:15px}
body{font-family:var(--font);background:var(--bg);color:var(--text);min-height:100vh;-webkit-font-smoothing:antialiased}

/* LAYOUT */
.layout{display:flex;min-height:100vh}

/* SIDEBAR */
.sidebar{width:var(--sidebar-w);background:var(--primary-dark);color:#e2e8f0;position:fixed;left:0;top:0;bottom:0;display:flex;flex-direction:column;z-index:100;overflow-y:auto;transition:transform .3s ease;scrollbar-width:thin;scrollbar-color:rgba(255,255,255,.1) transparent}
.sidebar-brand{padding:18px 20px;display:flex;align-items:center;gap:12px;border-bottom:1px solid rgba(255,255,255,.1);text-decoration:none;color:#fff}
.brand-icon{width:40px;height:40px;background:linear-gradient(135deg,#3b82f6,#8b5cf6);border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}
.brand-text strong{display:block;font-size:16px;font-weight:700;color:#fff}
.brand-text span{font-size:12px;color:#94a3b8}
.sidebar-nav{flex:1;padding:10px 0}
.nav-section{padding:8px 16px 4px;font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:#475569;font-weight:600}
.nav-item{display:flex;align-items:center;gap:10px;padding:9px 20px;color:#94a3b8;text-decoration:none;font-size:14px;font-weight:500;transition:all .2s;position:relative;cursor:pointer}
.nav-item:hover{color:#fff;background:rgba(255,255,255,.07)}
.nav-item.active{color:#fff;background:rgba(59,130,246,.25)}
.nav-item.active::before{content:'';position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--primary-light);border-radius:0 2px 2px 0}
.nav-icon{font-size:17px;width:22px;text-align:center;flex-shrink:0}
.sidebar-footer{padding:14px 18px;border-top:1px solid rgba(255,255,255,.1)}
.sidebar-user{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.user-avatar{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,#3b82f6,#8b5cf6);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;color:#fff;flex-shrink:0}
.user-info strong{display:block;font-size:13px;color:#e2e8f0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:150px}
.user-info span{font-size:11px;color:#64748b}
.btn-logout{width:100%;padding:8px;background:rgba(239,68,68,.15);color:#f87171;border:1px solid rgba(239,68,68,.2);border-radius:var(--radius-sm);cursor:pointer;font-size:13px;font-family:var(--font);transition:all .2s}
.btn-logout:hover{background:rgba(239,68,68,.3)}

/* MAIN */
.main-content{margin-left:var(--sidebar-w);flex:1;display:flex;flex-direction:column;min-height:100vh}

/* HEADER */
.header{background:var(--card);border-bottom:1px solid var(--border);height:var(--header-h);display:flex;align-items:center;padding:0 24px;gap:12px;position:sticky;top:0;z-index:50;box-shadow:var(--shadow)}
.btn-hamburger{display:none;width:36px;height:36px;background:transparent;border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;font-size:18px;align-items:center;justify-content:center}
.header-left{flex:1;min-width:0}
.page-title{font-size:18px;font-weight:700;color:var(--text)}
.page-subtitle{font-size:12px;color:var(--text-light)}
.header-actions{display:flex;align-items:center;gap:8px}
.btn-icon{width:36px;height:36px;border-radius:var(--radius-sm);background:var(--bg);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:16px;color:var(--text-light);transition:all .2s;text-decoration:none;position:relative}
.btn-icon:hover{background:var(--border);color:var(--text)}
.notif-wrap{position:relative}
.notif-badge{position:absolute;top:-3px;right:-3px;background:var(--danger);color:#fff;width:16px;height:16px;border-radius:50%;font-size:10px;display:flex;align-items:center;justify-content:center;font-weight:700}

/* PAGE */
.page-content{flex:1;padding:24px}

/* CARDS */
.content-card{background:var(--card);border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow);overflow:hidden;margin-bottom:20px}
.card-header{padding:16px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px}
.card-title{font-size:16px;font-weight:700;color:var(--text)}
.card-body{padding:20px}

/* STATS */
.stats-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px;margin-bottom:24px}
.stat-card{background:var(--card);border-radius:var(--radius);border:1px solid var(--border);padding:20px;display:flex;align-items:center;gap:16px;box-shadow:var(--shadow);transition:all .2s}
.stat-card:hover{box-shadow:var(--shadow-md);transform:translateY(-1px)}
.stat-icon{width:52px;height:52px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:24px;flex-shrink:0}
.stat-value{font-size:28px;font-weight:800;color:var(--text);line-height:1}
.stat-label{font-size:13px;color:var(--text-light);margin-top:2px}
.stat-change{font-size:12px;margin-top:4px;font-weight:600}

/* BUTTONS */
.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:var(--radius-sm);font-family:var(--font);font-size:14px;font-weight:600;cursor:pointer;border:1px solid transparent;transition:all .2s;text-decoration:none;white-space:nowrap}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}.btn-primary:hover:not(:disabled){background:var(--primary-dark)}
.btn-success{background:var(--success);color:#fff}.btn-success:hover:not(:disabled){background:#15803d}
.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover:not(:disabled){background:#b91c1c}
.btn-warning{background:var(--warning);color:#fff}.btn-warning:hover:not(:disabled){background:#b45309}
.btn-outline{background:transparent;border-color:var(--border);color:var(--text)}.btn-outline:hover{background:var(--bg)}
.btn-line{background:#06c755;color:#fff;border-color:#06c755}.btn-line:hover{background:#05a847}
.btn-sm{padding:5px 10px;font-size:12px}
.btn-lg{padding:12px 24px;font-size:16px}

/* TABLE */
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse}
th{background:var(--bg);padding:11px 16px;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--text-light);text-align:left;border-bottom:2px solid var(--border);white-space:nowrap}
td{padding:11px 16px;font-size:14px;color:var(--text);border-bottom:1px solid var(--border);vertical-align:middle}
tr:last-child td{border-bottom:none}
tr:hover td{background:var(--bg)}

/* FORMS */
.form-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px}
.form-group{display:flex;flex-direction:column;gap:5px}
.form-group.full{grid-column:1/-1}
label{font-size:13px;font-weight:600;color:var(--text-light)}
.required::after{content:' *';color:var(--danger)}
input,select,textarea{width:100%;padding:9px 12px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);font-family:var(--font);font-size:14px;color:var(--text);transition:all .2s;outline:none}
input:focus,select:focus,textarea:focus{border-color:var(--primary-light);box-shadow:0 0 0 3px rgba(59,130,246,.15);background:var(--card)}
textarea{min-height:80px;resize:vertical}
.search-box{display:flex;align-items:center;gap:8px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);padding:0 12px;min-width:220px}
.search-box input{border:none;background:transparent;padding:8px 0;outline:none}

/* MODAL */
.modal{display:none;position:fixed;inset:0;z-index:1000;background:rgba(0,0,0,.5);backdrop-filter:blur(4px);align-items:center;justify-content:center;padding:16px}
.modal.show,.modal[style*="flex"]{display:flex}
.modal-box{background:var(--card);border-radius:var(--radius-lg);width:100%;max-width:620px;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow-lg);animation:modalIn .2s ease}
.modal-box.modal-lg{max-width:920px}
.modal-box.modal-sm{max-width:420px}
@keyframes modalIn{from{opacity:0;transform:translateY(-16px) scale(.97)}to{opacity:1;transform:none}}
.modal-header{padding:18px 22px 14px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}
.modal-title{font-size:17px;font-weight:700}
.modal-close{width:30px;height:30px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;font-size:16px;display:flex;align-items:center;justify-content:center;color:var(--text-light);transition:all .2s}
.modal-close:hover{background:var(--danger);color:#fff;border-color:var(--danger)}
.modal-body{padding:18px 22px}
.modal-footer{padding:14px 22px 18px;border-top:1px solid var(--border);display:flex;justify-content:flex-end;gap:8px}

/* TABS */
.tabs{display:flex;border-bottom:2px solid var(--border);gap:4px;margin-bottom:20px;overflow-x:auto}
.tab{padding:9px 16px;font-size:14px;font-weight:600;color:var(--text-light);cursor:pointer;white-space:nowrap;border-bottom:2px solid transparent;margin-bottom:-2px;transition:all .2s}
.tab:hover{color:var(--primary)}
.tab.active{color:var(--primary);border-bottom-color:var(--primary)}

/* LEAVE PROGRESS */
.leave-bar{background:var(--bg);border-radius:6px;height:8px;overflow:hidden;margin-top:4px}
.leave-bar-fill{height:100%;border-radius:6px;transition:width .5s}

/* LINE CONFIG */
.line-config{background:linear-gradient(135deg,#06c755,#04a244);border-radius:var(--radius-lg);padding:24px;color:#fff;margin-bottom:20px}
.line-config h3{font-size:20px;margin-bottom:6px}
.line-config p{opacity:.85;font-size:14px;margin-bottom:16px}
.line-config input{background:rgba(255,255,255,.2);border:1px solid rgba(255,255,255,.3);color:#fff}
.line-config input::placeholder{color:rgba(255,255,255,.6)}
.line-config label{color:rgba(255,255,255,.9)}

/* SCROLLBAR */
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}

/* ANIM */
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.fade-in{animation:fadeIn .3s ease}

/* RESPONSIVE */
@media(max-width:900px){
  .sidebar{transform:translateX(-100%)}
  .sidebar.open{transform:none}
  .main-content{margin-left:0}
  .btn-hamburger{display:flex}
}
@media(max-width:600px){
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .form-grid{grid-template-columns:1fr}
  .page-content{padding:12px}
  .header{padding:0 12px}
}
@media print{.sidebar,.header,.btn,.no-print{display:none!important}.main-content{margin-left:0}body{background:#fff}}