/* ── RESET & BASE ─────────────────────────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --primary:#1a3a5c;--primary-dark:#112840;--primary-light:#2a5080;
  --accent:#00897b;--accent-dark:#00695c;
  --warning:#f57c00;--danger:#c62828;--success:#2e7d32;--info:#1565c0;
  --bg:#f0f4f8;--surface:#fff;--surface2:#f8fafc;
  --border:#d1dbe6;--border2:#e8edf2;
  --text:#1a2638;--text2:#4a5568;--text3:#8a9ab0;
  --shadow:0 2px 8px rgba(0,0,0,.08);--shadow2:0 4px 16px rgba(0,0,0,.12);
  --radius:8px;--radius2:12px;
  --sidebar-w:260px;--topbar-h:60px;
  --font:'Segoe UI',system-ui,-apple-system,sans-serif;
}
html{font-size:15px}
body{font-family:var(--font);background:var(--bg);color:var(--text);min-height:100vh;overflow-x:hidden}
a{color:var(--primary);text-decoration:none}
button{font-family:var(--font);cursor:pointer}
input,select,textarea{font-family:var(--font)}
.hidden{display:none!important}

/* ── LOGIN ────────────────────────────────────────────────────────────────── */
.login-screen{position:fixed;inset:0;background:linear-gradient(135deg,var(--primary) 0%,var(--accent) 100%);display:flex;align-items:center;justify-content:center;padding:1rem}
.login-card{background:var(--surface);border-radius:var(--radius2);padding:2.5rem 2rem;width:100%;max-width:400px;box-shadow:var(--shadow2)}
.login-logo{text-align:center;margin-bottom:2rem}
.login-icon{font-size:3rem;color:var(--primary);font-weight:900;line-height:1}
.login-logo h1{font-size:1.8rem;color:var(--primary);font-weight:700;margin-top:.4rem}
.login-logo p{color:var(--text3);font-size:.85rem}
.login-footer{text-align:center;margin-top:1.5rem;color:var(--text3);font-size:.8rem}

/* ── APP SHELL ────────────────────────────────────────────────────────────── */
.app{display:flex;min-height:100vh}

/* SIDEBAR */
.sidebar{width:var(--sidebar-w);background:var(--primary);color:#fff;display:flex;flex-direction:column;position:fixed;top:0;left:0;height:100vh;z-index:200;transition:transform .3s ease;overflow-y:auto}
.sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:1rem 1.2rem;border-bottom:1px solid rgba(255,255,255,.1)}
.sidebar-logo{display:flex;align-items:center;gap:.6rem}
.logo-icon{font-size:1.5rem;font-weight:900;background:var(--accent);width:36px;height:36px;border-radius:8px;display:flex;align-items:center;justify-content:center}
.logo-text{font-size:1.1rem;font-weight:700;letter-spacing:.02em}
.sidebar-close{background:none;border:none;color:rgba(255,255,255,.6);font-size:1.1rem;padding:.2rem;display:none}

.sidebar-nav{flex:1;padding:.75rem 0}
.nav-section{padding:.4rem 1.2rem .2rem;font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:rgba(255,255,255,.4);margin-top:.5rem}
.nav-item{display:flex;align-items:center;gap:.75rem;padding:.65rem 1.2rem;color:rgba(255,255,255,.8);cursor:pointer;transition:all .2s;font-size:.9rem;border-left:3px solid transparent}
.nav-item:hover{background:rgba(255,255,255,.08);color:#fff}
.nav-item.active{background:rgba(255,255,255,.12);color:#fff;border-left-color:var(--accent)}
.nav-icon{font-size:1rem;width:20px;text-align:center;flex-shrink:0}

.sidebar-footer{padding:1rem 1.2rem;border-top:1px solid rgba(255,255,255,.1)}
.user-info{font-size:.82rem;color:rgba(255,255,255,.7);margin-bottom:.5rem}
.user-info strong{display:block;color:#fff;font-size:.9rem}
.btn-logout{width:100%;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);color:rgba(255,255,255,.8);padding:.5rem;border-radius:6px;font-size:.85rem;transition:all .2s}
.btn-logout:hover{background:rgba(255,255,255,.2);color:#fff}

.sidebar-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:190}

/* MAIN WRAP */
.main-wrap{margin-left:var(--sidebar-w);flex:1;display:flex;flex-direction:column;min-height:100vh;transition:margin .3s}

/* TOPBAR */
.topbar{height:var(--topbar-h);background:var(--surface);border-bottom:1px solid var(--border);display:flex;align-items:center;padding:0 1.5rem;gap:1rem;position:sticky;top:0;z-index:100;box-shadow:0 1px 4px rgba(0,0,0,.06)}
.hamburger{background:none;border:none;font-size:1.4rem;color:var(--text2);padding:.2rem;display:none}
.topbar-title{font-size:1.05rem;font-weight:600;color:var(--text);flex:1}
.topbar-right{display:flex;align-items:center;gap:.75rem}
.topbar-user{font-size:.85rem;color:var(--text2);font-weight:500}

/* CONTENT */
.content{flex:1;padding:1.5rem;overflow-y:auto}

/* ── COMPONENTS ───────────────────────────────────────────────────────────── */
/* Cards */
.card{background:var(--surface);border-radius:var(--radius2);border:1px solid var(--border2);box-shadow:var(--shadow);padding:1.25rem}
.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1rem;gap:1rem;flex-wrap:wrap}
.card-title{font-size:1rem;font-weight:600;color:var(--text)}

/* Stats */
.stats-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:1rem;margin-bottom:1.5rem}
.stat-card{background:var(--surface);border-radius:var(--radius2);padding:1.25rem;border:1px solid var(--border2);box-shadow:var(--shadow)}
.stat-label{font-size:.78rem;color:var(--text3);font-weight:600;text-transform:uppercase;letter-spacing:.05em;margin-bottom:.4rem}
.stat-value{font-size:1.7rem;font-weight:700;color:var(--text);line-height:1}
.stat-sub{font-size:.78rem;color:var(--text3);margin-top:.3rem}
.stat-card.primary{background:var(--primary);border-color:var(--primary)} .stat-card.primary .stat-label,.stat-card.primary .stat-value,.stat-card.primary .stat-sub{color:#fff}
.stat-card.accent{background:var(--accent);border-color:var(--accent)} .stat-card.accent .stat-label,.stat-card.accent .stat-value,.stat-card.accent .stat-sub{color:#fff}
.stat-card.warning{background:var(--warning);border-color:var(--warning)} .stat-card.warning .stat-label,.stat-card.warning .stat-value,.stat-card.warning .stat-sub{color:#fff}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:.4rem;padding:.5rem 1rem;border-radius:6px;border:none;font-size:.875rem;font-weight:500;cursor:pointer;transition:all .2s;text-decoration:none;white-space:nowrap}
.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}
.btn-accent{background:var(--accent);color:#fff}.btn-accent:hover{background:var(--accent-dark)}
.btn-success{background:var(--success);color:#fff}.btn-success:hover{filter:brightness(.9)}
.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{filter:brightness(.9)}
.btn-warning{background:var(--warning);color:#fff}.btn-warning:hover{filter:brightness(.9)}
.btn-outline{background:none;border:1px solid var(--border);color:var(--text2)}.btn-outline:hover{background:var(--surface2)}
.btn-sm{padding:.35rem .7rem;font-size:.8rem}
.btn-full{width:100%;justify-content:center}
.btn-group{display:flex;gap:.5rem;flex-wrap:wrap}

/* Forms */
.form-group{margin-bottom:1rem}
.form-group label{display:block;font-size:.83rem;font-weight:600;color:var(--text2);margin-bottom:.35rem}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:.55rem .8rem;border:1px solid var(--border);border-radius:6px;font-size:.9rem;color:var(--text);background:var(--surface);transition:border-color .2s;outline:none}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(26,58,92,.1)}
.form-group textarea{resize:vertical;min-height:80px}
.form-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:.75rem 1rem}
.form-grid .form-group{margin-bottom:0}
.form-row{display:flex;gap:1rem;flex-wrap:wrap}
.form-row .form-group{flex:1;min-width:180px}

/* Table */
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
table{width:100%;border-collapse:collapse;font-size:.875rem}
th{background:var(--surface2);color:var(--text2);font-weight:600;font-size:.78rem;text-transform:uppercase;letter-spacing:.04em;padding:.65rem .85rem;text-align:left;white-space:nowrap;border-bottom:1px solid var(--border)}
td{padding:.65rem .85rem;border-bottom:1px solid var(--border2);color:var(--text);vertical-align:middle}
tr:hover td{background:var(--surface2)}
.actions{display:flex;gap:.35rem;flex-wrap:nowrap}

/* Badges */
.badge{display:inline-flex;align-items:center;padding:.2rem .55rem;border-radius:20px;font-size:.73rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em;white-space:nowrap}
.badge-success{background:#e8f5e9;color:var(--success)}
.badge-danger{background:#ffebee;color:var(--danger)}
.badge-warning{background:#fff3e0;color:var(--warning)}
.badge-info{background:#e3f2fd;color:var(--info)}
.badge-primary{background:#e8eef5;color:var(--primary)}
.badge-gray{background:#f0f0f0;color:#666}

/* Alerts */
.alert{padding:.7rem 1rem;border-radius:6px;font-size:.875rem;margin-bottom:1rem}
.alert-error{background:#ffebee;color:var(--danger);border:1px solid #ffcdd2}
.alert-success{background:#e8f5e9;color:var(--success);border:1px solid #c8e6c9}
.alert-info{background:#e3f2fd;color:var(--info);border:1px solid #bbdefb}
.alert-warning{background:#fff3e0;color:var(--warning);border:1px solid #ffe0b2}

/* Modal */
.modal-backdrop{position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:500;display:flex;align-items:center;justify-content:center;padding:1rem}
.modal{background:var(--surface);border-radius:var(--radius2);width:100%;max-width:640px;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow2)}
.modal-lg{max-width:860px}
.modal-xl{max-width:1100px}
.modal-header{display:flex;align-items:center;justify-content:space-between;padding:1.2rem 1.5rem;border-bottom:1px solid var(--border2)}
.modal-header h3{font-size:1rem;font-weight:600;color:var(--text)}
.modal-close{background:none;border:none;font-size:1.2rem;color:var(--text3);padding:.2rem;cursor:pointer;line-height:1}
.modal-close:hover{color:var(--text)}
.modal-body{padding:1.5rem}
.modal-footer{padding:1rem 1.5rem;border-top:1px solid var(--border2);display:flex;justify-content:flex-end;gap:.75rem}

/* Tabs */
.tabs{display:flex;gap:0;border-bottom:2px solid var(--border2);margin-bottom:1.25rem;overflow-x:auto}
.tab{padding:.6rem 1.1rem;font-size:.875rem;font-weight:500;color:var(--text3);border-bottom:2px solid transparent;margin-bottom:-2px;cursor:pointer;white-space:nowrap;transition:all .2s}
.tab:hover{color:var(--text)}
.tab.active{color:var(--primary);border-bottom-color:var(--primary)}

/* Filter bar */
.filter-bar{display:flex;gap:.75rem;flex-wrap:wrap;margin-bottom:1.25rem;align-items:flex-end}
.filter-bar .form-group{margin-bottom:0;min-width:140px;flex:1}
.filter-bar .form-group input,.filter-bar .form-group select{font-size:.85rem}

/* Pagination / misc */
.empty-state{text-align:center;padding:3rem 1rem;color:var(--text3)}
.empty-state .empty-icon{font-size:3rem;margin-bottom:.75rem}
.empty-state p{font-size:.9rem}

/* Loading */
.loading-center{display:flex;justify-content:center;align-items:center;height:200px}
.spinner{width:36px;height:36px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* Payslip */
.payslip{max-width:700px;margin:0 auto;background:#fff;border:1px solid var(--border);border-radius:var(--radius2);font-size:.875rem}
.payslip-header{background:var(--primary);color:#fff;padding:1.5rem;border-radius:var(--radius2) var(--radius2) 0 0;display:flex;justify-content:space-between;align-items:flex-start;flex-wrap:wrap;gap:1rem}
.payslip-body{padding:1.5rem}
.payslip-section{margin-bottom:1.25rem}
.payslip-section h4{font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;color:var(--text3);font-weight:700;margin-bottom:.6rem;border-bottom:1px solid var(--border2);padding-bottom:.4rem}
.payslip-row{display:flex;justify-content:space-between;padding:.35rem 0;border-bottom:1px dashed var(--border2)}
.payslip-row:last-child{border-bottom:none}
.payslip-total{display:flex;justify-content:space-between;font-weight:700;font-size:1rem;background:var(--primary);color:#fff;padding:.75rem 1rem;border-radius:6px;margin-top:1rem}

/* Chart */
.chart-bar-wrap{padding:.75rem 0}
.chart-bar-row{display:flex;align-items:center;gap:.75rem;margin-bottom:.5rem;font-size:.8rem}
.chart-bar-label{width:90px;text-align:right;color:var(--text2);flex-shrink:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chart-bar-track{flex:1;background:var(--border2);border-radius:4px;height:16px;overflow:hidden}
.chart-bar-fill{height:100%;border-radius:4px;background:var(--primary);transition:width .5s}
.chart-bar-val{width:80px;color:var(--text2);font-weight:500;flex-shrink:0}

/* Number formatting */
.num-right{text-align:right}
.text-success{color:var(--success)}
.text-danger{color:var(--danger)}
.text-muted{color:var(--text3)}

/* ── RESPONSIVE ───────────────────────────────────────────────────────────── */
@media(max-width:900px){
  .sidebar{transform:translateX(-100%)}
  .sidebar.open{transform:translateX(0)}
  .sidebar-close{display:block}
  .sidebar-overlay.open{display:block}
  .main-wrap{margin-left:0}
  .hamburger{display:block}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .form-grid{grid-template-columns:1fr}
  .content{padding:1rem}
}
@media(max-width:580px){
  .stats-grid{grid-template-columns:1fr 1fr}
  .modal{margin:.5rem;max-height:95vh}
  .btn-group{flex-direction:column}
  .filter-bar .form-group{min-width:120px}
  .payslip-header{flex-direction:column}
  td,.th{padding:.5rem .6rem}
}
@media print{
  .sidebar,.topbar,.btn,.modal-footer,.filter-bar,.actions{display:none!important}
  .main-wrap{margin:0}
  .payslip{border:none;max-width:100%}
  body{background:#fff}
}