/* =====================================================
   ระบบแผนงานโรงเรียน - UI v2.0 Modern
   ===================================================== */
@import url('https://fonts.googleapis.com/css2?family=Kanit:wght@300;400;500;600;700&family=Sarabun:wght@300;400;500;600;700;800&display=swap');

:root {
    --primary: #1e3a5f;
    --primary-light: #2d6da8;
    --primary-dark: #0f1f33;
    --accent: #f07623;
    --accent-light: #ffa64d;
    --success: #0ea960;
    --danger: #dc3545;
    --warning: #f0ad4e;
    --info: #0dcaf0;
    --sidebar-width: 260px;
    --topbar-height: 64px;
    --bg-body: #f1f5f9;
    --bg-card: #ffffff;
    --text-main: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow: 0 4px 16px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.1);
    --radius: 12px;
    --radius-lg: 16px;
    --trans: all 0.25s cubic-bezier(0.4,0,0.2,1);
}
*{box-sizing:border-box;margin:0}
body{font-family:'Sarabun',sans-serif;background:var(--bg-body);color:var(--text-main);font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased}

/* === SIDEBAR === */
.sidebar{position:fixed;top:0;left:0;width:var(--sidebar-width);height:100vh;background:linear-gradient(175deg,#0f1f33,#1a3355 40%,#1e3a5f);color:#fff;z-index:1050;overflow-y:auto;overflow-x:hidden;transition:transform .35s cubic-bezier(.4,0,.2,1);border-right:1px solid rgba(255,255,255,.05)}
.sidebar-header{padding:24px 20px 20px;text-align:center;border-bottom:1px solid rgba(255,255,255,.08);background:rgba(0,0,0,.15)}
.school-logo{width:56px;height:56px;background:linear-gradient(135deg,var(--accent),var(--accent-light));border-radius:16px;display:flex;align-items:center;justify-content:center;margin:0 auto 12px;font-size:26px;box-shadow:0 4px 15px rgba(240,118,35,.4);animation:pulse 3s ease-in-out infinite}
@keyframes pulse{0%,100%{box-shadow:0 4px 15px rgba(240,118,35,.3)}50%{box-shadow:0 4px 25px rgba(240,118,35,.5)}}
.sidebar-header h6{font-family:'Kanit',sans-serif;font-weight:600;font-size:15px}
.sidebar-nav{padding:8px 0 20px}
.nav-section{padding:18px 20px 6px;font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:1.5px;color:rgba(255,255,255,.3)}
.sidebar .nav-link{display:flex;align-items:center;gap:12px;padding:10px 20px;margin:1px 8px;color:rgba(255,255,255,.65);text-decoration:none;font-size:14px;border-radius:10px;transition:var(--trans);position:relative}
.sidebar .nav-link:hover{background:rgba(255,255,255,.08);color:#fff;transform:translateX(3px)}
.sidebar .nav-link.active{background:linear-gradient(135deg,rgba(240,118,35,.2),rgba(255,166,77,.1));color:#fff;font-weight:600;box-shadow:inset 0 0 0 1px rgba(240,118,35,.3)}
.sidebar .nav-link.active::before{content:'';position:absolute;left:-8px;top:50%;transform:translateY(-50%);width:4px;height:24px;background:var(--accent);border-radius:0 4px 4px 0}
.sidebar .nav-link i{font-size:18px;width:22px;text-align:center;opacity:.85}
.sidebar .nav-link .badge{margin-left:auto;font-size:10px;padding:3px 7px;animation:bounce 2s ease-in-out infinite}
@keyframes bounce{0%,100%{transform:scale(1)}50%{transform:scale(1.15)}}
.sidebar::-webkit-scrollbar{width:3px}.sidebar::-webkit-scrollbar-thumb{background:rgba(255,255,255,.15);border-radius:3px}

/* === TOPBAR === */
.main-content{margin-left:var(--sidebar-width);min-height:100vh;transition:margin-left .35s cubic-bezier(.4,0,.2,1)}
.topbar{position:sticky;top:0;height:var(--topbar-height);background:rgba(255,255,255,.85);backdrop-filter:blur(20px) saturate(180%);-webkit-backdrop-filter:blur(20px) saturate(180%);border-bottom:1px solid var(--border);display:flex;align-items:center;padding:0 28px;z-index:1000}
.sidebar-toggle{color:var(--text-main);padding:6px 10px;border-radius:8px;transition:var(--trans)}
.sidebar-toggle:hover{background:var(--border-light)}
.topbar .user-info{display:flex;align-items:center;gap:10px;padding:6px 14px;border-radius:10px;background:var(--border-light);font-size:14px}
.topbar .user-avatar{width:32px;height:32px;border-radius:10px;background:linear-gradient(135deg,var(--primary-light),var(--primary));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:13px}
.notification-bell{position:relative;padding:8px;border-radius:10px;color:var(--text-secondary);cursor:pointer;transition:var(--trans);text-decoration:none;font-size:20px}
.notification-bell:hover{background:var(--border-light);color:var(--text-main)}
.notification-bell .notif-count{position:absolute;top:2px;right:2px;width:18px;height:18px;background:var(--danger);color:#fff;font-size:10px;font-weight:700;border-radius:50%;display:flex;align-items:center;justify-content:center;border:2px solid #fff;animation:bounce 2s ease-in-out infinite}
.content-wrapper{padding:28px;max-width:1440px}

/* === NOTIFICATION DROPDOWN === */
.notif-dropdown{position:absolute;top:calc(100% + 8px);right:0;width:380px;background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);border:1px solid var(--border);z-index:2000;display:none;max-height:450px;overflow-y:auto}
.notif-dropdown.show{display:block;animation:slideDown .2s ease}
@keyframes slideDown{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}
.notif-dropdown .notif-header{padding:14px 18px;font-weight:700;font-size:14px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center}
.notif-item{padding:12px 18px;border-bottom:1px solid var(--border-light);display:flex;gap:12px;transition:var(--trans);cursor:pointer;text-decoration:none;color:inherit}
.notif-item:hover{background:#f8fafc}
.notif-item.unread{background:rgba(45,109,168,.04)}
.notif-icon{width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0}
.notif-icon.approve{background:#d1f5e0;color:var(--success)}
.notif-icon.request{background:#fff3cd;color:var(--warning)}
.notif-icon.reject{background:#fce4e4;color:var(--danger)}
.notif-icon.info{background:#cff4fc;color:var(--info)}
.notif-text{font-size:13px;line-height:1.5}
.notif-time{font-size:11px;color:var(--text-muted);margin-top:2px}

/* === STAT CARDS === */
.stat-card{background:var(--bg-card);border-radius:var(--radius-lg);padding:22px;box-shadow:var(--shadow-sm);border:1px solid var(--border);transition:var(--trans);position:relative;overflow:hidden}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:transparent}
.stat-card .stat-icon{width:50px;height:50px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:22px;color:#fff;flex-shrink:0}
.stat-card .stat-value{font-size:22px;font-weight:800;font-family:'Kanit',sans-serif;line-height:1.2}
.stat-card .stat-label{font-size:12.5px;color:var(--text-muted);font-weight:500;margin-top:2px}
.bg-primary-grad{background:linear-gradient(135deg,#2d6da8,#1e3a5f)}
.bg-success-grad{background:linear-gradient(135deg,#0ea960,#0d8a4d)}
.bg-warning-grad{background:linear-gradient(135deg,#f07623,#e8a025)}
.bg-danger-grad{background:linear-gradient(135deg,#dc3545,#b02a37)}
.bg-info-grad{background:linear-gradient(135deg,#0dcaf0,#0ba8c9)}
.bg-purple-grad{background:linear-gradient(135deg,#7c3aed,#5b21b6)}

/* === CARDS & TABLES === */
.card{border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);overflow:hidden;transition:var(--trans)}
.card:hover{box-shadow:var(--shadow)}
.card-header{background:var(--bg-card);border-bottom:1px solid var(--border);font-weight:600;font-size:15px;padding:14px 20px}
.table{font-size:13.5px;margin:0}
.table thead th{background:linear-gradient(180deg,#f8fafc,#f1f5f9);font-weight:700;font-size:12px;text-transform:uppercase;letter-spacing:.5px;color:var(--text-secondary);white-space:nowrap;border-bottom:2px solid var(--border);padding:12px 14px}
.table td{vertical-align:middle;padding:10px 14px;border-bottom:1px solid var(--border-light)}
.table tbody tr{transition:var(--trans)}
.table tbody tr:hover{background:rgba(45,109,168,.03)}
.table .text-money{text-align:right;font-family:'Kanit','Sarabun',monospace;font-weight:500;letter-spacing:-.3px}

/* === BUDGET PROGRESS === */
.budget-progress{height:6px;border-radius:3px;background:#e2e8f0;overflow:hidden}
.budget-progress .bar{height:100%;border-radius:3px;transition:width 1s cubic-bezier(.4,0,.2,1);position:relative}
.budget-progress .bar.safe{background:linear-gradient(90deg,#0ea960,#22c55e)}
.budget-progress .bar.warning{background:linear-gradient(90deg,#f07623,#f0ad4e)}
.budget-progress .bar.danger{background:linear-gradient(90deg,#dc3545,#ef4444)}
.budget-progress .bar::after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.3),transparent);animation:shimmer 2s infinite}
@keyframes shimmer{0%{transform:translateX(-100%)}100%{transform:translateX(100%)}}

/* === FORMS === */
.form-label{font-weight:600;font-size:13px;color:var(--text-secondary);margin-bottom:6px}
.form-control,.form-select{font-size:14px;border:1.5px solid var(--border);border-radius:10px;padding:10px 14px;transition:var(--trans)}
.form-control:focus,.form-select:focus{border-color:var(--primary-light);box-shadow:0 0 0 4px rgba(45,109,168,.1)}

/* === BUTTONS === */
.btn{font-weight:600;border-radius:10px;padding:8px 18px;font-size:14px;transition:var(--trans)}
.btn-primary{background:linear-gradient(135deg,var(--primary-light),var(--primary));border:none;box-shadow:0 2px 8px rgba(30,58,95,.2)}
.btn-primary:hover{background:linear-gradient(135deg,var(--primary),var(--primary-dark));transform:translateY(-1px);box-shadow:0 4px 16px rgba(30,58,95,.3)}
.btn-action{padding:6px 10px;font-size:13px;border-radius:8px}
.btn-export{background:linear-gradient(135deg,#0ea960,#0d8a4d);color:#fff;border:none}
.btn-export:hover{background:linear-gradient(135deg,#0d8a4d,#0b7340);color:#fff;transform:translateY(-1px)}

/* === BADGES === */
.badge{font-weight:600;font-size:11px;padding:4px 10px;border-radius:6px}

/* === MODAL === */
.modal-content{border:none;border-radius:20px;box-shadow:var(--shadow-lg);overflow:hidden}
.modal-header{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;padding:18px 24px;border:none}
.modal-header .modal-title{font-family:'Kanit',sans-serif;font-weight:600}
.modal-header .btn-close{filter:brightness(0) invert(1);opacity:.7}
.modal-body{padding:24px}
.modal-footer{padding:16px 24px;border-top:1px solid var(--border)}

/* === LOGIN === */
.login-container{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#0f1f33,#1a3355 30%,#1e3a5f 60%,#2d6da8);position:relative;overflow:hidden}
.login-container::before{content:'';position:absolute;width:600px;height:600px;border-radius:50%;background:radial-gradient(circle,rgba(240,118,35,.15),transparent 70%);top:-200px;right:-200px;animation:orbit 8s ease-in-out infinite}
.login-container::after{content:'';position:absolute;width:400px;height:400px;border-radius:50%;background:radial-gradient(circle,rgba(45,109,168,.15),transparent 70%);bottom:-150px;left:-100px;animation:orbit 10s ease-in-out infinite reverse}
@keyframes orbit{0%,100%{transform:translate(0,0)}50%{transform:translate(30px,-30px)}}
.login-card{background:rgba(255,255,255,.95);backdrop-filter:blur(30px);border-radius:20px;padding:44px 40px;width:100%;max-width:430px;box-shadow:0 25px 80px rgba(0,0,0,.3);position:relative;z-index:1;border:1px solid rgba(255,255,255,.2)}
.login-card h2{font-family:'Kanit',sans-serif;color:var(--primary);font-weight:700;font-size:22px}

/* === PAGE TITLES === */
.page-title{font-family:'Kanit',sans-serif;font-size:24px;font-weight:700;margin-bottom:4px;display:flex;align-items:center;gap:8px}
.page-subtitle{font-size:14px;color:var(--text-muted)}

/* === BUDGET MINI === */
.budget-mini{background:#fff;border-radius:var(--radius);padding:14px 16px;border-left:4px solid var(--primary-light);box-shadow:var(--shadow-sm);transition:var(--trans)}
.budget-mini:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.budget-mini.warning{border-left-color:var(--warning)}
.budget-mini.danger{border-left-color:var(--danger)}
.budget-mini.success{border-left-color:var(--success)}

/* === FILE UPLOAD === */
.file-upload-zone{border:2px dashed var(--border);border-radius:var(--radius);padding:24px;text-align:center;transition:var(--trans);cursor:pointer;background:#fafbfc}
.file-upload-zone:hover,.file-upload-zone.dragover{border-color:var(--primary-light);background:rgba(45,109,168,.04)}
.file-upload-zone i{font-size:32px;color:var(--text-muted)}
.file-item{display:flex;align-items:center;gap:10px;padding:8px 12px;background:var(--border-light);border-radius:8px;margin-top:6px;font-size:13px}
.file-item i{color:var(--primary-light)}

/* === ALERTS === */
.alert{border:none;border-radius:var(--radius);box-shadow:var(--shadow-sm);animation:slideIn .3s ease}
@keyframes slideIn{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}

/* === SIGNATURE (Print) === */
.signature-box{display:inline-block;width:200px;text-align:center;margin:30px 20px 0}
.signature-line{border-top:1px dotted #000;margin-top:60px;padding-top:4px}

/* === PRINT === */
@media print{
    .sidebar,.topbar,.no-print,.sidebar-toggle,.notification-bell{display:none!important}
    .main-content{margin-left:0!important}
    .content-wrapper{padding:0;max-width:100%}
    body{background:#fff;font-size:12pt}
    .card{border:1px solid #ccc;box-shadow:none;border-radius:0}
    .print-header{display:block!important;text-align:center;margin-bottom:20px}
    .badge{border:1px solid #333}
}
.print-header{display:none}

/* === RESPONSIVE === */
@media(max-width:991px){.sidebar{transform:translateX(-100%)}.sidebar.show{transform:translateX(0)}.main-content{margin-left:0}.content-wrapper{padding:16px}}
@media(max-width:575px){.stat-card .stat-value{font-size:18px}.page-title{font-size:20px}}

/* === EMPTY STATE === */
.empty-state{text-align:center;padding:48px 24px;color:var(--text-muted)}
.empty-state i{font-size:48px;opacity:.3;margin-bottom:12px;display:block}

/* === SCROLLBAR === */
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:#94a3b8}