:root {
  color-scheme: light;
  --ink: #16313a;
  --ink-strong: #0b232c;
  --muted: #6b7f86;
  --line: #dbe8e9;
  --line-soft: #eaf1f2;
  --paper: #ffffff;
  --canvas: #f3f8f8;
  --teal: #078477;
  --teal-dark: #05695f;
  --teal-bright: #20b8a7;
  --teal-soft: #e2f7f3;
  --blue-soft: #eaf2ff;
  --navy: #082f39;
  --navy-deep: #062630;
  --amber: #b66a05;
  --red: #bd342c;
  --green: #188358;
  --shadow-sm: 0 4px 16px rgba(13, 55, 64, .06);
  --shadow: 0 18px 52px rgba(13, 55, 64, .09);
  font-family: Tahoma, "Segoe UI", Arial, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: radial-gradient(circle at 85% 0, rgba(32,184,167,.08), transparent 28rem), var(--canvas); color: var(--ink); font-size: 16px; line-height: 1.75; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
::selection { background: #bfece6; color: var(--navy); }

.shell { min-height: 100vh; display: grid; grid-template-columns: 282px minmax(0, 1fr); }
.sidebar { background: radial-gradient(circle at 20% 5%, rgba(44,210,191,.2), transparent 16rem), linear-gradient(160deg, var(--navy), var(--navy-deep)); color: #eaf8f6; padding: 27px 19px; position: sticky; top: 0; height: 100vh; overflow: hidden; }
.sidebar::after { content: ""; position: absolute; width: 220px; height: 88px; left: -75px; bottom: 85px; border: 1px solid rgba(106,224,211,.11); border-radius: 999px; transform: rotate(-35deg); pointer-events: none; }
.brand { display: flex; align-items: center; gap: 13px; padding: 0 9px 27px; border-bottom: 1px solid rgba(255,255,255,.11); position: relative; z-index: 1; }
.brand-mark { width: 48px; height: 48px; display: grid; place-items: center; border-radius: 16px; background: linear-gradient(145deg,#37c8b7,#0a8d80); color: white; box-shadow: 0 12px 25px rgba(0,0,0,.18), inset 0 1px rgba(255,255,255,.35); font-size: 0; font-weight: 800; flex: 0 0 auto; }
.brand-mark::before { content: "+"; font-size: 31px; font-family: Arial, sans-serif; line-height: 1; font-weight: 400; }
.brand strong { display: block; font-size: 1.08rem; letter-spacing: -.2px; }
.brand small { color: #9dc7c3; font-size: .77rem; }
.nav { display: grid; gap: 7px; margin-top: 25px; position: relative; z-index: 1; }
.nav a { min-height: 47px; padding: 10px 13px; border-radius: 13px; color: #bcd6d4; display: flex; gap: 11px; align-items: center; border: 1px solid transparent; transition: .2s ease; }
.nav a:hover { color: white; transform: translateX(-3px); background: rgba(255,255,255,.055); }
.nav a.active { color: white; background: linear-gradient(90deg,rgba(47,202,185,.22),rgba(47,202,185,.08)); border-color: rgba(105,226,211,.15); box-shadow: inset -3px 0 #31c8b6; }
.sidebar-foot { position: absolute; bottom: 24px; left: 28px; right: 28px; color: #82aaa7; font-size: .78rem; z-index: 1; }

.main { min-width: 0; }
.topbar { min-height: 82px; padding: 13px clamp(20px,4vw,48px); border-bottom: 1px solid rgba(211,226,227,.85); background: rgba(255,255,255,.82); display: flex; align-items: center; justify-content: space-between; gap: 16px; position: sticky; top: 0; z-index: 10; backdrop-filter: blur(18px); box-shadow: 0 6px 22px rgba(8,47,57,.03); }
.topbar h1 { margin: 0; font-size: clamp(1.25rem,2vw,1.7rem); color: var(--ink-strong); letter-spacing: -.5px; }
.topbar-title small { display: block; color: var(--teal); font-size: .72rem; font-weight: 700; margin-bottom: -1px; }
.user-chip { display: flex; align-items: center; gap: 11px; color: var(--muted); background: #f5f9f9; border: 1px solid var(--line-soft); border-radius: 14px; padding: 6px 7px 6px 13px; }
.avatar { width: 39px; height: 39px; border-radius: 12px; background: linear-gradient(145deg,var(--teal-soft),#ccefe9); color: var(--teal); display: grid; place-items: center; font-weight: 800; }
.content { padding: 34px clamp(20px,4vw,48px) 55px; max-width: 1540px; margin: 0 auto; }
.menu-btn { display: none; border: 0; background: transparent; font-size: 1.4rem; color: var(--ink); }

.stats { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 17px; margin-bottom: 25px; }
.stat, .panel, .product-card { background: rgba(255,255,255,.96); border: 1px solid var(--line-soft); border-radius: 20px; box-shadow: var(--shadow-sm); }
.stat { padding: 22px 22px 20px; position: relative; overflow: hidden; transition: transform .2s, box-shadow .2s; }
.stat:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.stat::before { content: ""; position: absolute; width: 72px; height: 72px; border-radius: 24px; background: var(--teal-soft); left: -24px; top: -27px; transform: rotate(20deg); }
.stat:nth-child(2)::before { background: var(--blue-soft); }
.stat.low::before { background: #fff2d9; }
.stat.out::before { background: #ffebe8; }
.stat span { color: var(--muted); font-size: .88rem; position: relative; }
.stat strong { display: block; font-size: 2rem; line-height: 1.3; margin-top: 7px; color: var(--teal-dark); position: relative; }
.stat:nth-child(2) strong { color: #3166a8; }
.stat.low strong { color: var(--amber); }
.stat.out strong { color: var(--red); }
.grid-2 { display: grid; grid-template-columns: 1.4fr .85fr; gap: 20px; }
.panel { padding: 24px; margin-bottom: 21px; box-shadow: var(--shadow-sm); }
.panel-head { display: flex; align-items: center; justify-content: space-between; gap: 15px; margin-bottom: 19px; }
.panel h2, .panel h3 { margin: 0; font-size: 1.12rem; color: var(--ink-strong); }
.panel h2::before, .panel h3::before { content: ""; display: inline-block; width: 4px; height: 18px; border-radius: 99px; background: linear-gradient(var(--teal-bright),var(--teal)); margin-left: 9px; vertical-align: -3px; }
.muted { color: var(--muted); }
.btn { border: 1px solid transparent; border-radius: 12px; padding: 9px 16px; min-height: 42px; display: inline-flex; justify-content: center; align-items: center; gap: 7px; font-weight: 700; transition: .18s; }
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: linear-gradient(135deg,#0b9687,#08776c); color: white; box-shadow: 0 8px 18px rgba(7,132,119,.18); }
.btn-primary:hover { background: linear-gradient(135deg,#087d71,#05695f); box-shadow: 0 10px 25px rgba(7,132,119,.24); }
.btn-soft { background: var(--teal-soft); color: var(--teal-dark); }
.btn-outline { background: white; border-color: var(--line); color: var(--ink); }
.btn-outline:hover { border-color: #a9ceca; background: #f8fbfb; }
.btn-danger { background: #fff0ee; color: var(--red); }
.btn-sm { min-height: 34px; padding: 5px 11px; font-size: .84rem; }
.toolbar { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 20px; align-items: stretch; }
.search { position: relative; flex: 1 1 340px; }
.search input { width: 100%; padding-right: 43px; }
.search span { position: absolute; right: 15px; top: 8px; color: var(--teal); font-size: 1.2rem; }

input, select, textarea { width: 100%; border: 1px solid #cbdcdd; border-radius: 12px; padding: 10px 13px; background: white; color: var(--ink); transition: border .15s, box-shadow .15s; }
input:hover, select:hover, textarea:hover { border-color: #9fc4c1; }
input:focus, select:focus, textarea:focus { outline: 0; border-color: var(--teal); box-shadow: 0 0 0 4px rgba(7,132,119,.11); }
label { display: grid; gap: 7px; font-weight: 700; font-size: .9rem; color: #29464e; }
label small { font-weight: 400; color: var(--muted); }
.form-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 17px; }
.full { grid-column: 1 / -1; }
.form-actions { display: flex; gap: 10px; justify-content: flex-start; margin-top: 23px; }
.table-wrap { overflow-x: auto; border-radius: 13px; }
table { width: 100%; border-collapse: separate; border-spacing: 0; min-width: 720px; }
th, td { padding: 13px 11px; text-align: right; border-bottom: 1px solid var(--line-soft); vertical-align: middle; }
th { color: var(--muted); font-size: .8rem; background: #f8fbfb; font-weight: 700; }
th:first-child { border-radius: 0 11px 0 0; }
th:last-child { border-radius: 11px 0 0 0; }
tbody tr { transition: background .15s; }
tbody tr:hover { background: #f8fcfb; }
tr:last-child td { border-bottom: 0; }
.product-cell { display: flex; align-items: center; gap: 12px; min-width: 210px; }
.product-thumb { width: 52px; height: 52px; border-radius: 15px; object-fit: cover; background: linear-gradient(145deg,#e7f8f5,#d6f1ec); display: grid; place-items: center; color: var(--teal); font-weight: 800; flex: 0 0 auto; border: 1px solid #d4ece8; }
.product-thumb img { width: 100%; height: 100%; object-fit: cover; border-radius: inherit; }
.stock { display: inline-flex; min-width: 56px; justify-content: center; align-items: center; border-radius: 99px; padding: 4px 10px; background: #e8f7ef; color: var(--green); font-weight: 800; font-size: .88rem; }
.stock.low { background: #fff5df; color: var(--amber); }
.stock.out { background: #fff0ee; color: var(--red); }
.actions { display: flex; gap: 6px; }
.alert { border-radius: 14px; padding: 12px 15px; margin-bottom: 18px; border: 1px solid; box-shadow: var(--shadow-sm); }
.alert.success { background: #eaf8f1; color: #176b45; border-color: #bce5cd; }
.alert.error { background: #fff0ee; color: var(--red); border-color: #f1c2bd; }
.empty { text-align: center; padding: 48px 20px; color: var(--muted); }

.login-page { min-height: 100vh; display: grid; grid-template-columns: 1.08fr .92fr; background: white; }
.login-art { background: radial-gradient(circle at 15% 90%,rgba(43,207,188,.22),transparent 27rem), radial-gradient(circle at 90% 5%,rgba(87,173,255,.12),transparent 22rem), linear-gradient(150deg,#0a3f4b,#062a34 70%); color: white; padding: clamp(38px,8vw,100px); display: flex; flex-direction: column; justify-content: center; position: relative; overflow: hidden; }
.login-art::before { content: ""; width: 330px; height: 126px; border: 2px solid rgba(117,236,222,.13); border-radius: 999px; position: absolute; left: -85px; bottom: 30px; transform: rotate(-38deg); box-shadow: inset 165px 0 rgba(42,200,182,.06); }
.login-art::after { content: "+"; width: 190px; height: 190px; display: grid; place-items: center; font: 120px/1 Arial,sans-serif; color: rgba(255,255,255,.035); border: 1px solid rgba(255,255,255,.04); border-radius: 55px; position: absolute; left: 11%; top: 8%; transform: rotate(8deg); }
.login-art > * { position: relative; z-index: 1; }
.login-art .brand-mark { width: 58px; height: 58px; border-radius: 19px; }
.login-art h1 { font-size: clamp(2.3rem,4.5vw,4.5rem); line-height: 1.18; margin: 24px 0 15px; max-width: 700px; letter-spacing: -1.5px; }
.login-art p { color: #b8d8d5; max-width: 540px; font-size: 1.08rem; }
.login-art .login-badge { display: inline-flex; align-self: flex-start; align-items: center; gap: 8px; margin-top: 23px; padding: 7px 12px; border: 1px solid rgba(173,234,226,.17); border-radius: 99px; color: #bfe4df; background: rgba(255,255,255,.045); font-size: .82rem; }
.login-art .login-badge::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: #45d1c0; box-shadow: 0 0 0 5px rgba(69,209,192,.11); }
.login-form-wrap { display: grid; place-items: center; padding: 34px; background: linear-gradient(150deg,#fff,#f7fbfb); }
.login-form { width: min(100%,425px); background: white; border: 1px solid var(--line-soft); border-radius: 24px; padding: clamp(24px,4vw,39px); box-shadow: 0 25px 65px rgba(7,48,57,.11); }
.login-form h2 { font-size: 1.85rem; margin: 0 0 4px; color: var(--ink-strong); }
.login-form h2::after { content: ""; display: block; width: 37px; height: 4px; background: linear-gradient(90deg,var(--teal),var(--teal-bright)); border-radius: 99px; margin-top: 10px; }
.login-form form { display: grid; gap: 18px; margin-top: 29px; }
.login-form .btn { margin-top: 4px; min-height: 48px; }
.photo-preview { width: 155px; height: 155px; object-fit: cover; border-radius: 18px; border: 1px solid var(--line); margin-top: 9px; box-shadow: var(--shadow-sm); }
.detail-head { display: grid; grid-template-columns: 185px 1fr; gap: 27px; align-items: start; }
.detail-photo { width: 185px; height: 185px; border-radius: 24px; background: linear-gradient(145deg,var(--teal-soft),#cfeee9); object-fit: cover; display: grid; place-items: center; font-size: 2.8rem; color: var(--teal); font-weight: 800; border: 1px solid #cfe8e4; box-shadow: var(--shadow-sm); }
.meta-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 13px; margin-top: 20px; }
.meta { background: linear-gradient(145deg,#f8fbfb,#f2f8f7); border: 1px solid var(--line-soft); border-radius: 14px; padding: 12px 14px; }
.meta small { display: block; color: var(--muted); font-size: .78rem; margin-bottom: 2px; }
.number-positive { color: var(--green); font-weight: 800; }
.number-negative { color: var(--red); font-weight: 800; }

@media (max-width: 1120px) { .shell { grid-template-columns: 250px minmax(0,1fr); } .stats { grid-template-columns: repeat(2,1fr); } .grid-2 { grid-template-columns: 1fr; } }
@media (max-width: 760px) {
  .shell { display: block; }
  .sidebar { position: fixed; right: -292px; z-index: 30; width: 282px; transition: right .22s ease; box-shadow: -16px 0 45px rgba(0,0,0,.15); }
  .sidebar.open { right: 0; }
  .menu-btn { display: block; }
  .topbar { min-height: 72px; }
  .user-chip span { display: none; }
  .user-chip { padding: 5px; background: transparent; border: 0; }
  .content { padding-top: 24px; }
  .stats { gap: 12px; }
  .stat { padding: 18px; }
  .stat strong { font-size: 1.7rem; }
  .form-grid, .meta-grid { grid-template-columns: 1fr; }
  .full { grid-column: auto; }
  .detail-head { grid-template-columns: 1fr; }
  .login-page { grid-template-columns: 1fr; }
  .login-art { min-height: 290px; padding: 38px 28px; }
  .login-art h1 { font-size: 2.15rem; margin-top: 18px; }
  .login-art p { font-size: .94rem; margin-bottom: 0; }
  .login-art .login-badge { margin-top: 14px; }
  .login-form-wrap { padding: 25px 18px 38px; }
  .login-form { padding: 25px 22px; border-radius: 20px; margin-top: -18px; z-index: 2; }
}
@media (max-width: 460px) { body { font-size: 15px; } .stats { grid-template-columns: 1fr 1fr; } .panel { padding: 18px 15px; border-radius: 17px; } .toolbar > * { flex: 1 1 100%; } .toolbar .btn { width: 100%; } .login-art { min-height: 265px; } }