:root{
    --color-bg:#f5f7fb;
    --color-surface:#ffffff;
    --color-primary:#1f4d8f;
    --color-secondary:#4b5563;
    --color-text:#1f2937;
    --color-border:#d7deea;
    --color-success:#0f9d58;
    --color-danger:#c62828;
    --color-warning:#b26a00;
}
*{box-sizing:border-box}
html,body{width:100%;overflow-x:hidden}
body{
    margin:0;
    font-family:Arial,Helvetica,sans-serif;
    color:var(--color-text);
    background:var(--color-bg);
    line-height:1.5;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--color-primary);text-decoration:none}
a:hover{text-decoration:underline}
.container{width:min(1120px,94%);margin:0 auto}
.topbar{background:var(--color-primary);color:#fff;padding:12px 0}
.topbar a{color:#fff}
.brand-wrap{display:flex;align-items:center;gap:12px;min-width:0}
.brand-logo-box{
    width:56px;height:56px;border-radius:10px;background:rgba(255,255,255,.12);
    display:flex;align-items:center;justify-content:center;overflow:hidden;flex:0 0 56px
}
.brand-logo{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain}
.brand{font-size:22px;font-weight:700;line-height:1.2;word-break:break-word}
.nav{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.nav-row{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}
.card{
    background:var(--color-surface);border:1px solid var(--color-border);border-radius:12px;
    padding:18px;box-shadow:0 2px 10px rgba(18,38,63,.04);margin:18px 0
}
.grid{display:grid;gap:18px}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
h1,h2,h3{margin-top:0}
.btn{
    display:inline-block;background:var(--color-primary);color:#fff;border:none;border-radius:8px;
    padding:10px 14px;cursor:pointer;font-size:14px
}
.btn:hover{filter:brightness(.95);text-decoration:none}
.btn-secondary{background:var(--color-secondary)}
.btn-danger{background:var(--color-danger)}
.btn-success{background:var(--color-success)}
.btn-warning{background:var(--color-warning)}
.form-group{margin-bottom:14px}
label{display:block;margin-bottom:6px;font-weight:600}
input[type="text"],input[type="email"],input[type="password"],input[type="datetime-local"],
input[type="number"],input[type="color"],select,textarea{
    width:100%;padding:10px 12px;border:1px solid #bac6da;border-radius:8px;
    font-size:14px;background:#fff;color:var(--color-text)
}
input[type="file"]{width:100%}
textarea{min-height:120px;resize:vertical}
.table{width:100%;border-collapse:collapse;background:#fff}
.table th,.table td{border:1px solid var(--color-border);padding:10px;text-align:left;vertical-align:top}
.table th{background:#eef3fb}
.alert{border-radius:8px;padding:12px 14px;margin:14px 0}
.alert-success{background:#e7f6ed;color:#0b6b38;border:1px solid #b7e0c7}
.alert-danger{background:#fdecec;color:#9c1c1c;border:1px solid #f6c1c1}
.alert-warning{background:#fff3df;color:#8a5700;border:1px solid #f0d5a5}
.small{font-size:13px}.muted{color:#667085}.actions{display:flex;gap:8px;flex-wrap:wrap}
.thumb{
    max-width:120px;max-height:120px;width:auto;height:auto;border-radius:8px;
    border:1px solid var(--color-border);object-fit:contain;background:#fff
}
.editor-box textarea{min-height:280px}
footer{padding:24px 0 40px;color:#6b7280}
@media (max-width:768px){
    .brand{font-size:18px}
    .brand-logo-box{width:46px;height:46px;flex-basis:46px}
    .nav-row{align-items:flex-start}
    .nav{width:100%;gap:10px}
    .topbar{padding:10px 0}
    .card{padding:14px}
    .table{display:block;overflow-x:auto;white-space:nowrap}
}
@media (max-width:480px){
    .container{width:min(96%,96%)}
    .btn{width:100%;text-align:center}
    .actions{flex-direction:column}
    .brand-wrap{align-items:flex-start}
}