/* LIGHT theme & polished look */
:root{
  --bg:#f6f8fb; --ink:#0f172a; --muted:#5b6b7b; --card:#ffffff; --line:#e6ebf2;
  --accent:#2563eb; --accent-2:#f59e0b; --danger:#dc2626; --ok:#16a34a;
}
*{box-sizing:border-box;font-family:Inter,system-ui,Arial,sans-serif}
body{margin:0;background:linear-gradient(180deg,#f7f9ff, #f3f6fc);color:var(--ink)}
.page{display:none;min-height:100vh}
.page.active{display:block}

/* Header */
.topbar{display:flex;justify-content:space-between;align-items:center;padding:12px 18px;background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:3}
.brand{display:flex;gap:8px;align-items:center;font-weight:800;font-size:18px}
.logo-icon{font-size:22px}
.logo-text b{font-weight:900}
.top-actions{display:flex;align-items:center;gap:12px}
.user-photo{width:40px;height:40px;border-radius:50%;overflow:hidden;border:1px solid var(--line);background:#f3f4f6;display:flex;align-items:center;justify-content:center}
.user-photo img{width:100%;height:100%;object-fit:cover}
.icon-btn{background:transparent;border:1px solid var(--line);padding:8px 10px;border-radius:10px;color:var(--muted);cursor:pointer}
.icon-btn.close{position:absolute;right:8px;top:8px}

/* Login */
.login-card{max-width:460px;margin:8vh auto;padding:28px;background:var(--card);border-radius:16px;border:1px solid var(--line);box-shadow:0 8px 30px rgba(15,23,42,.06)}
.logo{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.login-card h2{margin:4px 0 14px}
.small{font-size:12px}
.muted{color:var(--muted)}
.btn{background:var(--accent);border:none;padding:10px 14px;border-radius:10px;color:#fff;font-weight:700;cursor:pointer;transition:.2s}
.btn:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(37,99,235,.25)}
.btn.ghost{background:#fff;border:1px solid var(--line);color:var(--ink)}
.btn:focus{outline:3px solid rgba(37,99,235,.2)}
.search{padding:10px 12px;border-radius:10px;border:1px solid var(--line);background:#fff}

/* Layout */
.container{padding:18px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px}
.card.option{padding:18px;border-radius:14px;background:var(--card);border:1px solid var(--line);text-align:left;font-weight:700;cursor:pointer;transition:.2s}
.card.option:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(15,23,42,.08)}
.panel{margin-top:18px;background:var(--card);padding:14px;border-radius:14px;border:1px solid var(--line)}
.hidden{display:none}

/* Form */
.form .two{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:760px){.form .two{grid-template-columns:1fr}}
.input{position:relative;display:flex;align-items:center;border:1px solid var(--line);background:#fff;border-radius:12px;padding:8px 10px}
.input .i{margin-right:8px;opacity:.75}
.input input,.input select{border:none;outline:none;flex:1;background:transparent;color:var(--ink);padding:8px 4px;font-size:14px}
.input.file input[type=file]{padding:6px 0}
.input select{appearance:none}
.req{color:var(--danger);margin-left:6px;font-weight:700}
input:required:invalid, select:required:invalid{box-shadow:0 0 0 2px rgba(220,38,38,.12)}
input:required:focus:invalid, select:required:focus:invalid{box-shadow:0 0 0 2px rgba(220,38,38,.22)}

/* Tables (Excel style) */
.table-wrap{margin-top:12px;overflow:auto;border:1px solid var(--line);border-radius:12px;background:#fff}
.table-wrap table{width:100%;border-collapse:collapse}
.table-wrap th,.table-wrap td{padding:10px;border:1px solid var(--line);font-size:14px}
.table-wrap thead th{background:#eef3ff;font-weight:700}
.table-wrap tfoot td{font-weight:800}

/* Thumbnails & print */
.thumb{width:32px;height:32px;border-radius:6px;object-fit:cover;border:1px solid var(--line);cursor:pointer}

/* Footer */
.footer{padding:18px;text-align:center;color:var(--muted)}

/* Modal */
.modal{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;z-index:10}
.modal.hidden{display:none}
.modal-backdrop{position:absolute;inset:0;background:rgba(0,0,0,.5)}
.modal-content{position:relative;background:#000;padding:8px;border-radius:12px;max-width:min(96vw,1000px);max-height:90vh}
.modal-content img{max-width:90vw;max-height:85vh;display:block;margin:auto}

/* Print */
@media print{
  .topbar,.grid,.btn,.search,.icon-btn,.footer{display:none !important}
  .panel{border:none;box-shadow:none}
  .thumb{width:24px;height:24px}
  body{background:white}
}