:root{--nav:#10284f;--nav2:#173b72;--primary:#2563eb;--primary2:#0ea5e9;--ink:#18233a;--muted:#718096;--line:#e5eaf2;--bg:#f4f7fb;--card:#fff;--danger:#dc2626;--radius:18px;--shadow:0 10px 28px rgba(29,65,113,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Arial;background:linear-gradient(180deg,#f8fbff,#f4f7fb);color:var(--ink);-webkit-font-smoothing:antialiased}button,input,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}a{text-decoration:none;color:inherit}
.admin-shell{display:grid;grid-template-columns:256px minmax(0,1fr);min-height:100vh}.admin-side{background:linear-gradient(180deg,var(--nav),#0c2142 70%);color:#fff;padding:20px 14px;position:sticky;top:0;height:100vh;overflow:auto;z-index:60;box-shadow:8px 0 30px rgba(15,38,76,.08)}.admin-brand{font-size:20px;padding:8px 9px 20px;letter-spacing:-.3px}.admin-brand small{display:block;font-size:11px;opacity:.65;margin:5px 0 0 31px;letter-spacing:.3px}.admin-side nav{display:grid;gap:5px}.admin-side nav a{padding:12px 13px;border-radius:12px;color:#d9e6ff;font-size:14px;font-weight:650;transition:.18s;border:1px solid transparent}.admin-side nav a:hover,.admin-side nav a.active{background:linear-gradient(135deg,rgba(53,118,222,.48),rgba(41,103,197,.28));color:#fff;border-color:rgba(159,198,255,.16);transform:translateX(2px)}
.admin-main{padding:22px 26px;min-width:0}.admin-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px;gap:14px}.admin-top h1{margin:0;font-size:27px;letter-spacing:-.5px}.admin-top p{margin:4px 0 0;color:#7f8ba3;font-size:13px}.admin-top-actions{display:flex;align-items:center;gap:8px}.menu-toggle{display:none;width:42px;height:42px;border:1px solid #dce4ef;background:#fff;border-radius:12px;font-size:20px;cursor:pointer}.pill,.btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid #dbe3ee;background:#fff;border-radius:11px;padding:9px 13px;font-weight:700;cursor:pointer;min-height:40px;transition:.15s;white-space:nowrap}.pill:hover,.btn:hover{border-color:#bcd3f4;box-shadow:0 5px 15px rgba(37,99,235,.08)}.btn.primary{background:linear-gradient(135deg,#2c80f6,#1d63df);color:#fff;border-color:#246be4;box-shadow:0 7px 16px rgba(37,99,235,.16)}.btn.danger{color:#d92d20;border-color:#ffd0cd;background:#fff8f7}.btn.big{padding:12px 18px;font-size:15px;min-height:46px}.cards{display:grid;grid-template-columns:repeat(4,minmax(160px,1fr));gap:14px;margin-bottom:18px}.stat{background:#fff;border:1px solid #e6ebf2;border-radius:18px;padding:17px;box-shadow:var(--shadow);position:relative;overflow:hidden}.stat:after{content:"";position:absolute;width:86px;height:86px;border-radius:50%;background:#edf5ff;right:-30px;top:-28px}.stat span{font-size:25px;position:relative;z-index:1}.stat b{display:block;font-size:28px;margin:6px 0 3px;position:relative;z-index:1;letter-spacing:-.8px}.stat small,.muted{color:#7e8a9f}.panel{background:#fff;border:1px solid #e5eaf1;border-radius:18px;padding:19px;margin-bottom:19px;box-shadow:var(--shadow)}.panel h2{margin:0 0 9px;font-size:19px}.panel-head{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:13px}.panel-head h2{margin:0}.mini-grid,.works-grid{display:grid;grid-template-columns:repeat(4,minmax(160px,1fr));gap:13px}.mini,.works-grid article{border:1px solid #e5eaf1;border-radius:14px;overflow:hidden;background:#fff;padding-bottom:9px;transition:.18s}.mini:hover,.works-grid article:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(29,65,113,.09)}.mini img,.works-grid img{width:100%;height:160px;object-fit:contain;background:#fbfcfe}.mini b,.mini small,.works-grid b,.works-grid small{display:block;padding:3px 10px}.mini b,.works-grid b{margin-top:5px}.mini small,.works-grid small{color:#8290a8;font-size:11px}.form-grid{display:grid;gap:13px;max-width:800px}.form-grid label{display:grid;gap:7px;font-weight:700;font-size:13px;color:#3b4d67}.form-grid input,.form-grid select,.filter input,.filter select,.inline-form input{min-height:44px;padding:10px 12px;border:1px solid #d8e1ec;border-radius:11px;font:inherit;background:#fff;outline:none}.form-grid input:focus,.form-grid select:focus,.filter input:focus,.filter select:focus,.inline-form input:focus{border-color:#8fbbff;box-shadow:0 0 0 3px #e8f1ff}.check{display:flex!important;grid-template-columns:auto 1fr!important;align-items:center;gap:8px}.check input{min-height:auto}.dropzone{border:2px dashed #9fc5ff!important;background:linear-gradient(180deg,#f8fbff,#f2f7ff);padding:28px;text-align:center;border-radius:16px;cursor:pointer;min-height:150px;place-content:center;transition:.2s}.dropzone:hover{background:#edf6ff;border-color:#6fa9ff!important}.dropzone>b,.dropzone>span{display:block}.dropzone>b{font-size:16px;margin:6px 0}.dropzone span{font-weight:500;color:#73839a}.dropzone input{border:0;background:transparent;min-height:auto;margin-top:12px;width:100%}.two-col{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:20px}.preview-box{min-height:420px;border:1px dashed #ced6e4;border-radius:16px;display:grid;place-items:center;padding:16px;background:#fbfcfe;text-align:center}.preview-box img{max-width:100%;max-height:550px;border-radius:12px}.placeholder{text-align:center;color:#8190a9;display:grid;gap:8px}.placeholder:first-letter{font-size:40px}.alert{padding:12px 14px;border-radius:11px;margin:0 0 15px;font-weight:650}.alert.ok{background:#eafaf0;color:#15703a;border:1px solid #ccefd8}.alert.bad{background:#fff1f0;color:#b42318;border:1px solid #ffd5d1}.inline-form,.filter{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:15px}.filter input{min-width:230px;flex:1}.icon-input{width:72px!important;flex:none!important}.small-input{width:105px!important;flex:none!important}.table-wrap{overflow:auto;border:1px solid #e9edf3;border-radius:13px}table{width:100%;border-collapse:collapse;min-width:680px}th,td{padding:12px;border-bottom:1px solid #edf0f5;text-align:left;vertical-align:middle}th{background:#f7f9fc;color:#596a81;font-size:12px;text-transform:uppercase;letter-spacing:.35px;position:sticky;top:0}tbody tr:hover{background:#fbfdff}td small{display:block;color:#8a96aa;margin-top:4px}.big-icon{font-size:26px}.badge{display:inline-block;border-radius:999px;padding:5px 9px;font-size:11px;font-weight:750}.badge.green{background:#e8f8ee;color:#177245}.badge.gray{background:#eef1f5;color:#667085}.actions{display:flex;gap:6px;flex-wrap:wrap}.actions .btn{min-height:36px;padding:7px 10px;font-size:12px}.picture-admin-grid{display:grid;grid-template-columns:repeat(4,minmax(170px,1fr));gap:13px}.picture-admin-grid article{border:1px solid #e5e9f0;border-radius:15px;overflow:hidden;padding-bottom:10px;background:#fff;transition:.18s}.picture-admin-grid article:hover{transform:translateY(-2px);box-shadow:0 10px 25px rgba(29,65,113,.09)}.picture-admin-grid img{width:100%;height:185px;object-fit:contain;background:#fafbfd}.picture-admin-grid article>div{padding:9px 10px}.picture-admin-grid b,.picture-admin-grid small{display:block}.picture-admin-grid b{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.picture-admin-grid small{color:#7d899d;margin:5px 0;font-size:11px}.picture-admin-grid .actions{padding:0 9px}.picture-admin-grid .actions .btn{flex:1}.login-body{min-height:100vh;display:grid;place-items:center;background:radial-gradient(circle at 20% 10%,#e4f0ff,transparent 30%),linear-gradient(135deg,#f2f7ff,#fff7ee);padding:18px}.login-card{width:min(430px,100%);background:rgba(255,255,255,.96);padding:28px;border-radius:22px;box-shadow:0 25px 70px rgba(18,50,95,.16);display:grid;gap:9px;border:1px solid rgba(255,255,255,.8)}.login-logo{font-size:46px;text-align:center}.login-card h1,.login-card p{text-align:center;margin:0}.login-card h1{font-size:24px}.login-card p{color:#7d899a;margin-bottom:10px}.login-card label{font-size:13px;font-weight:700}.login-card input{min-height:45px;padding:11px 12px;border:1px solid #d7deea;border-radius:11px;outline:none}.login-card input:focus{border-color:#91bbff;box-shadow:0 0 0 3px #e8f1ff}.login-card button{min-height:46px;padding:12px;border:0;border-radius:11px;background:linear-gradient(135deg,#2e82f7,#1c64df);color:#fff;font-weight:800;font-size:15px;box-shadow:0 9px 20px rgba(37,99,235,.18)}.login-card small{color:#8591a5;text-align:center;margin-top:7px;line-height:1.5}.admin-overlay{display:none}

@media(max-width:1180px){.cards{grid-template-columns:repeat(2,1fr)}.picture-admin-grid,.mini-grid,.works-grid{grid-template-columns:repeat(3,minmax(150px,1fr))}.admin-shell{grid-template-columns:220px minmax(0,1fr)}.admin-main{padding:20px}}
@media(max-width:800px){
 .admin-shell{display:block}.admin-side{position:fixed;left:0;top:0;width:min(290px,84vw);height:100vh;transform:translateX(-104%);transition:.24s ease;box-shadow:15px 0 45px rgba(15,23,42,.25);z-index:101}.admin-side.open{transform:translateX(0)}.admin-overlay{display:block;position:fixed;inset:0;background:rgba(15,23,42,.45);z-index:100;opacity:0;visibility:hidden;transition:.2s}.admin-overlay.show{opacity:1;visibility:visible}.admin-side nav{grid-template-columns:1fr}.admin-main{padding:14px}.admin-top{position:sticky;top:0;z-index:40;background:rgba(244,247,251,.94);backdrop-filter:blur(14px);margin:-14px -14px 14px;padding:11px 14px;border-bottom:1px solid #e3e9f1}.admin-top h1{font-size:20px}.admin-top p{font-size:11px}.menu-toggle{display:grid;place-items:center}.pill{font-size:0;width:42px;height:42px;padding:0}.pill:after{content:"🌐";font-size:18px}.admin-top-actions{gap:7px}.two-col{grid-template-columns:1fr}.preview-box{min-height:320px}.picture-admin-grid,.mini-grid,.works-grid{grid-template-columns:repeat(2,minmax(140px,1fr))}.panel{padding:14px;border-radius:15px}.filter{display:grid;grid-template-columns:1fr 1fr}.filter input{grid-column:1/-1;min-width:0}.filter .btn{width:100%}.inline-form{display:grid;grid-template-columns:72px 1fr 100px}.inline-form .btn{grid-column:1/-1}.table-wrap{margin:0 -2px}}
@media(max-width:520px){.cards{grid-template-columns:1fr 1fr;gap:9px}.stat{padding:14px}.stat b{font-size:23px}.stat small{font-size:11px}.picture-admin-grid,.mini-grid,.works-grid{grid-template-columns:1fr 1fr;gap:8px}.picture-admin-grid img,.mini img,.works-grid img{height:135px}.picture-admin-grid article>div{padding:7px}.picture-admin-grid .actions{padding:0 6px}.actions .btn{padding:7px 6px}.panel-head{align-items:flex-start}.panel-head h2{font-size:17px}.panel-head .btn{font-size:0;width:42px;padding:0}.panel-head .btn:after{content:"＋";font-size:18px}.dropzone{padding:20px 12px}.form-grid{gap:11px}.inline-form{grid-template-columns:64px 1fr}.inline-form .small-input{width:100%!important}.inline-form .small-input,.inline-form .btn{grid-column:auto}.filter{grid-template-columns:1fr}.filter input{grid-column:auto}.login-card{padding:22px 18px}.login-card h1{font-size:21px}}
@media(max-width:390px){.cards{grid-template-columns:1fr}.picture-admin-grid,.mini-grid,.works-grid{grid-template-columns:1fr}.picture-admin-grid img,.mini img,.works-grid img{height:190px}}

/* ===== V4.5 USERS / 6-COLUMN / WORK VIEWER ===== */
.picture-admin-grid.six{grid-template-columns:repeat(6,minmax(0,1fr));gap:12px}
.picture-admin-grid.six article img{height:145px;object-fit:contain;background:#fbfdff}
.admin-pagination{display:flex;flex-wrap:wrap;gap:7px;justify-content:center;margin:22px 0 5px}
.admin-pagination a{min-width:38px;height:38px;padding:0 10px;display:grid;place-items:center;border:1px solid #d8e3ef;border-radius:10px;background:#fff;color:#233b59;font-weight:800;text-decoration:none}
.admin-pagination a.on{background:#2477e8;color:#fff;border-color:#2477e8;box-shadow:0 6px 16px rgba(36,119,232,.22)}
.admin-table{width:100%;border-collapse:separate;border-spacing:0;font-size:13px}
.admin-table th,.admin-table td{padding:12px 10px;border-bottom:1px solid #e8eef5;text-align:left;vertical-align:middle}
.admin-table th{background:#f6f9fd;color:#4d6280;position:sticky;top:0}
.admin-table td small{display:block;color:#8190a5;margin-top:3px}
.table-scroll{overflow:auto;border:1px solid #e2e9f2;border-radius:14px}
.row-actions{display:flex;gap:6px;align-items:center;flex-wrap:wrap}.row-actions form{display:flex;gap:6px}
.btn.small{padding:7px 9px;font-size:11px}.text-danger{color:#db2447}
.user-form-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.user-form-grid label{display:flex;flex-direction:column;gap:6px;font-size:12px;font-weight:800;color:#4b607c}.user-form-grid input,.user-form-grid select,.user-form-grid textarea{width:100%;border:1px solid #dbe5ef;border-radius:11px;padding:11px 12px;background:#fff;font:inherit}.user-form-grid .wide{grid-column:1/-1}
.works-admin{grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.works-admin article{display:flex;flex-direction:column;overflow:hidden}.work-image-btn{position:relative;border:0;padding:0;background:#f7faff;cursor:zoom-in;height:220px}.work-image-btn img{width:100%;height:100%;object-fit:contain}.work-image-btn span{position:absolute;left:50%;bottom:10px;transform:translateX(-50%);background:rgba(10,30,55,.82);color:#fff;border-radius:999px;padding:6px 10px;font-size:11px;font-weight:800;opacity:0;transition:.2s}.work-image-btn:hover span{opacity:1}.work-meta{padding:10px 11px;display:grid;gap:3px}.work-meta small{color:#8190a5}.work-delete{margin:0 10px 10px;width:calc(100% - 20px)}
.work-modal{position:fixed;inset:0;background:rgba(8,18,35,.75);z-index:9999;display:none;align-items:center;justify-content:center;padding:24px;backdrop-filter:blur(6px)}.work-modal.show{display:flex}.work-modal-box{position:relative;width:min(1000px,96vw);max-height:94vh;background:#fff;border-radius:22px;padding:16px;box-shadow:0 30px 90px rgba(0,0,0,.35)}.work-modal-box h3{margin:0 44px 12px 2px}.work-modal-box img{display:block;max-width:100%;max-height:80vh;margin:auto;object-fit:contain}.work-modal-close{position:absolute;right:12px;top:10px;width:40px;height:40px;border:0;border-radius:50%;background:#f1f5f9;font-size:27px;cursor:pointer}
.empty-admin{text-align:center;padding:40px;color:#8190a5}
@media(max-width:1450px){.picture-admin-grid.six{grid-template-columns:repeat(5,1fr)}}
@media(max-width:1200px){.picture-admin-grid.six{grid-template-columns:repeat(4,1fr)}.works-admin{grid-template-columns:repeat(3,1fr)}}
@media(max-width:900px){.picture-admin-grid.six{grid-template-columns:repeat(3,1fr)}.works-admin{grid-template-columns:repeat(2,1fr)}.user-form-grid{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.picture-admin-grid.six{grid-template-columns:repeat(2,1fr)}.picture-admin-grid.six article img{height:125px}.works-admin{grid-template-columns:1fr}.user-form-grid{grid-template-columns:1fr}.work-image-btn{height:280px}}

/* V4.6 */
.work-card-actions{display:grid;grid-template-columns:1fr 1fr;gap:7px;padding:0 10px 10px}.work-card-actions form{margin:0}.work-card-actions .btn{width:100%;justify-content:center}.btn.download{background:#e9f8ef;color:#176d39;border-color:#cdebd8}.owner-line{color:#6a4bb5!important}.admin-pagination span{min-width:30px;display:grid;place-items:center;color:#8090a5}
@media(min-width:1451px){.picture-admin-grid.six{grid-template-columns:repeat(6,minmax(0,1fr))}}
.category-count-link{display:inline-flex;padding:5px 9px;border-radius:999px;background:#edf6ff;color:#176bc1;text-decoration:none;font-weight:800;font-size:12px}
.admin-page-summary{text-align:center;color:#7c899a;font-size:12px;font-weight:800;margin:18px 0 8px}


/* ===== V4.8 - DUYỆT TÀI KHOẢN ===== */
.approval-banner{margin:0 0 16px;padding:14px 18px;border:1px solid #f2cf66;background:linear-gradient(135deg,#fff8d9,#fffdf2);border-radius:15px;color:#7a5600;box-shadow:0 8px 24px rgba(214,166,28,.10)}
.approval-banner a{font-weight:800;color:#a56c00;margin-left:6px}.pending-row{background:#fffdf5}.badge.yellow{background:#fff0b8;color:#8b6200;border:1px solid #f0d675}.btn.approve{background:#e7fff0;border-color:#8ed8aa;color:#11733b}.btn.approve:hover{background:#cdf8dc}.self-register{display:inline-block;margin-top:4px;color:#8b6b00;background:#fff4c9;border-radius:999px;padding:2px 7px;width:max-content}