/* CMS Điện Máy ĐTC — giao diện quản trị */
:root {
  --green: #1e9c3a;
  --green-dark: #17812f;
  --dark: #1f2733;
  --dark-2: #293444;
  --border: #e3e6ea;
  --text: #2f3542;
  --red: #dd3333;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Open Sans', Arial, sans-serif; font-size: 14px; color: var(--text); background: #f2f4f7; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; font-size: 14px; }

/* Login */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--dark); }
.login-box { background: #fff; border-radius: 8px; padding: 34px; width: 360px; box-shadow: 0 10px 40px rgba(0,0,0,.3); }
.login-box h1 { font-size: 20px; color: var(--green-dark); margin-bottom: 4px; }
.login-box p.sub { color: #8a93a2; font-size: 13px; margin-bottom: 18px; }
.login-box label { display: block; font-weight: 600; margin: 12px 0 4px; }
.login-box input { width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 5px; outline: none; }
.login-box input:focus { border-color: var(--green); }
.login-box button { width: 100%; margin-top: 18px; background: var(--green); color: #fff; border: 0; padding: 11px; border-radius: 5px; font-weight: 700; font-size: 15px; }
.login-box button:hover { background: var(--green-dark); }
.login-error { background: #fdecea; color: #b71c1c; border-radius: 5px; padding: 9px 12px; margin-top: 12px; font-size: 13px; }

/* Layout */
.admin-layout { display: flex; min-height: 100vh; }
.admin-side { width: 220px; background: var(--dark); color: #cbd3df; flex-shrink: 0; display: flex; flex-direction: column; }
.admin-logo { padding: 18px 16px; font-size: 17px; font-weight: 800; color: #fff; border-bottom: 1px solid var(--dark-2); }
.admin-logo span { color: #6fdd8b; }
.admin-nav { flex: 1; padding: 10px 0; }
.admin-nav a { display: flex; align-items: center; gap: 10px; padding: 11px 16px; font-size: 14px; border-left: 3px solid transparent; }
.admin-nav a:hover { background: var(--dark-2); color: #fff; }
.admin-nav a.active { background: var(--dark-2); color: #fff; border-left-color: var(--green); }
.admin-side .view-site { padding: 14px 16px; border-top: 1px solid var(--dark-2); font-size: 13px; }
.admin-side .view-site a { color: #6fdd8b; }

.admin-main { flex: 1; min-width: 0; }
.admin-topbar { background: #fff; border-bottom: 1px solid var(--border); padding: 12px 22px; display: flex; align-items: center; justify-content: space-between; }
.admin-topbar h1 { font-size: 18px; }
.admin-user { display: flex; gap: 12px; align-items: center; font-size: 13px; color: #6b7686; }
.admin-user form { display: inline; }
.admin-user button { background: none; border: 1px solid var(--border); border-radius: 4px; padding: 5px 12px; color: var(--red); font-weight: 600; }
.admin-content { padding: 22px; }

/* Cards & tables */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 22px; }
.stat-card { background: #fff; border-radius: 8px; padding: 18px; border: 1px solid var(--border); }
.stat-card .num { font-size: 28px; font-weight: 800; color: var(--green-dark); }
.stat-card .lbl { color: #8a93a2; font-size: 13px; }

.panel { background: #fff; border: 1px solid var(--border); border-radius: 8px; margin-bottom: 22px; overflow: hidden; }
.panel-head { display: flex; align-items: center; justify-content: space-between; padding: 14px 18px; border-bottom: 1px solid var(--border); }
.panel-head h2 { font-size: 15px; }
.panel-body { padding: 18px; }

.table { width: 100%; border-collapse: collapse; }
.table th { text-align: left; font-size: 12px; text-transform: uppercase; color: #8a93a2; padding: 10px 14px; border-bottom: 2px solid var(--border); background: #fafbfc; }
.table td { padding: 10px 14px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.table tr:hover td { background: #fafbfc; }
.table img.thumb { width: 44px; height: 44px; object-fit: contain; border: 1px solid var(--border); border-radius: 4px; background: #fff; }

.btn { display: inline-block; border: 0; border-radius: 5px; padding: 8px 14px; font-weight: 600; font-size: 13px; }
.btn-green { background: var(--green); color: #fff; }
.btn-green:hover { background: var(--green-dark); }
.btn-gray { background: #e8ebef; color: var(--text); }
.btn-red { background: var(--red); color: #fff; }
.btn-sm { padding: 5px 10px; font-size: 12px; }

.badge { display: inline-block; font-size: 11px; font-weight: 700; padding: 3px 9px; border-radius: 10px; }
.badge.new { background: #fff3cd; color: #8a6d00; }
.badge.confirmed { background: #d0e7ff; color: #084d9e; }
.badge.shipping { background: #e0d4fb; color: #5b21b6; }
.badge.done { background: #d7f5df; color: #12692a; }
.badge.cancelled { background: #fde2e2; color: #a11212; }
.badge.on { background: #d7f5df; color: #12692a; }
.badge.off { background: #eee; color: #777; }

/* Forms */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 18px; }
.form-grid .full { grid-column: 1 / -1; }
.form-field label { display: block; font-weight: 600; margin-bottom: 5px; font-size: 13px; }
.form-field input, .form-field select, .form-field textarea {
  width: 100%; padding: 9px 12px; border: 1px solid var(--border); border-radius: 5px; outline: none; background: #fff;
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus { border-color: var(--green); }
.form-field .hint { font-size: 12px; color: #8a93a2; margin-top: 4px; }
.form-actions { margin-top: 18px; display: flex; gap: 10px; }
.img-preview { width: 90px; height: 90px; object-fit: contain; border: 1px solid var(--border); border-radius: 5px; background: #fff; }

.flash { border-radius: 6px; padding: 10px 14px; margin-bottom: 16px; font-size: 13px; }
.flash.ok { background: #d7f5df; color: #12692a; }
.flash.err { background: #fdecea; color: #b71c1c; }

.filter-bar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.filter-bar input, .filter-bar select { padding: 8px 10px; border: 1px solid var(--border); border-radius: 5px; }

.pagination { display: flex; gap: 6px; margin-top: 14px; }
.pagination a, .pagination .current { min-width: 32px; height: 32px; line-height: 30px; text-align: center; border: 1px solid var(--border); border-radius: 4px; display: inline-block; padding: 0 6px; background: #fff; }
.pagination .current { background: var(--green); color: #fff; border-color: var(--green); }

@media (max-width: 900px) {
  .admin-side { width: 60px; }
  .admin-logo, .admin-nav a span, .admin-side .view-site { display: none; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .form-grid { grid-template-columns: 1fr; }
}