@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@500&display=swap');

:root{
  --accent:#5b5ff0;
  --accent-dark:#4547c9;
  --accent-soft:#eef0ff;
  --bg:#f3f4f8;
  --surface:#ffffff;
  --sidebar:#181b2e;
  --sidebar-text:#8d90ad;
  --sidebar-text-active:#ffffff;
  --text:#1c1e2b;
  --text-muted:#6b6f8a;
  --border:#e7e8f2;
  --success:#1a9d63;
  --success-soft:#e5f7ee;
  --danger:#e0392f;
  --danger-soft:#fdeae9;
  --warning:#c98a06;
  --warning-soft:#fdf3dd;
  --radius:12px;
  --radius-sm:8px;
  --shadow:0 1px 2px rgba(20,20,50,.04), 0 8px 24px -12px rgba(20,20,50,.12);
}

*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
[hidden]{display:none !important}
body{
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:14.5px;
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em}
a{color:inherit;text-decoration:none}
button{font-family:inherit}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 18px;border-radius:var(--radius-sm);border:1px solid transparent;
  font-weight:600;font-size:14px;cursor:pointer;transition:.15s ease;white-space:nowrap;
}
.btn--primary{background:var(--accent);color:#fff}
.btn--primary:hover{background:var(--accent-dark)}
.btn--ghost{background:transparent;color:var(--text-muted);border-color:var(--border)}
.btn--ghost:hover{background:var(--bg);color:var(--text)}
.btn--danger{background:var(--danger-soft);color:var(--danger)}
.btn--danger:hover{background:var(--danger);color:#fff}
.btn--sm{padding:6px 12px;font-size:13px}
.btn--block{width:100%}
.btn:disabled{opacity:.6;cursor:not-allowed}
.icon-btn{
  width:38px;height:38px;border-radius:var(--radius-sm);border:1px solid transparent;
  background:transparent;color:var(--text-muted);cursor:pointer;display:inline-flex;
  align-items:center;justify-content:center;transition:.15s;
}
.icon-btn:hover{background:var(--bg);color:var(--text)}

/* ---------- Login screen ---------- */
.login-screen{
  min-height:100vh;display:flex;align-items:center;justify-content:center;
  background:radial-gradient(circle at 20% 20%, #23264a, #14162b 60%);
  padding:20px;
}
.login-card{width:100%;max-width:760px;background:var(--surface);border-radius:20px;overflow:hidden;box-shadow:0 30px 60px -20px rgba(0,0,0,.4);display:flex;align-items:stretch}
.login-card__header{background:linear-gradient(135deg,var(--accent),#8b5cf6);color:#fff;padding:44px 38px;text-align:center;flex:0 0 42%;display:flex;flex-direction:column;align-items:center;justify-content:center}
.login-card__logo{width:56px;height:56px;border-radius:16px;background:rgba(255,255,255,.15);display:flex;align-items:center;justify-content:center;font-size:24px;margin:0 auto 14px;overflow:hidden}
.login-card__logo img{width:100%;height:100%;object-fit:cover}
.login-card__header h1{font-size:24px}
.login-card__slogan{margin:2px 0 0;font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;opacity:.75}
.login-card__header p{margin:6px 0 0;opacity:.85;font-size:13.5px}
.login-card__body{padding:40px 36px;display:flex;flex-direction:column;gap:16px;flex:1;justify-content:center;position:relative}
.login-card__body::before{content:'';position:absolute;left:0;top:28px;bottom:28px;width:1px;background:linear-gradient(to bottom, transparent, rgba(0,0,0,.12), transparent)}
@media (max-width:640px){
  .login-card{max-width:400px;flex-direction:column}
  .login-card__header{flex:none;padding:38px 32px 30px}
  .login-card__body{padding:30px 32px 34px}
  .login-card__body::before{display:none}
}
.field{display:flex;flex-direction:column;gap:6px;font-size:13.5px;font-weight:600;color:var(--text)}
.field input,.field select,.field textarea{
  font-family:inherit;font-size:14.5px;font-weight:400;padding:11px 13px;border-radius:var(--radius-sm);
  border:1.5px solid var(--border);outline:none;transition:.15s;background:#fff;color:var(--text);width:100%;
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.password-wrap{position:relative;display:flex}
.password-wrap input{padding-right:42px}
.password-wrap .icon-btn{position:absolute;right:2px;top:2px;width:34px;height:calc(100% - 4px)}
.checkbox-field{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--text-muted);font-weight:500}
.form-error{background:var(--danger-soft);color:var(--danger);padding:10px 12px;border-radius:var(--radius-sm);font-size:13px;font-weight:600}
.form-success{background:var(--success-soft);color:var(--success);padding:10px 12px;border-radius:var(--radius-sm);font-size:13px;font-weight:600}
.field small{font-weight:400;color:var(--text-muted)}
.auth-switch{text-align:center;font-size:13px;color:var(--text-muted);line-height:1.8}
.auth-switch a{color:var(--accent);font-weight:600}
.auth-switch a:hover{text-decoration:underline}

/* ---------- App shell ---------- */
.app-shell{display:flex;min-height:100vh}
.sidebar{
  width:230px;flex-shrink:0;background:var(--sidebar);color:var(--sidebar-text);
  display:flex;flex-direction:column;padding:18px 12px;position:sticky;top:0;height:100vh;transition:.2s;
}
.sidebar__brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;padding:8px 10px 22px}
.sidebar__brand i{color:var(--accent)}
.sidebar__brand-icon{width:28px;height:28px;border-radius:8px;object-fit:cover}
.sidebar__nav{display:flex;flex-direction:column;gap:2px}
.nav-link{
  display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:var(--radius-sm);
  font-size:14px;font-weight:500;color:var(--sidebar-text);transition:.15s;
}
.nav-link i{width:18px;text-align:center}
.nav-link:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-link.active{background:var(--accent);color:#fff}

.app-main{flex:1;min-width:0;display:flex;flex-direction:column}
.topbar{
  display:flex;align-items:center;gap:14px;padding:14px 26px;background:var(--surface);
  border-bottom:1px solid var(--border);position:sticky;top:0;z-index:20;
}
.topbar__burger{display:none}
.topbar__title{font-size:19px;flex:1}
.topbar__user{display:flex;align-items:center;gap:14px}
.topbar__username{font-weight:600;font-size:13.5px;color:var(--text-muted)}

.page-content{padding:26px;flex:1}
.loading-spinner{display:flex;align-items:center;justify-content:center;padding:60px;font-size:26px;color:var(--accent)}

/* ---------- Cards / stats ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:16px;margin-bottom:24px}
.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.stat-card__icon{width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:17px;margin-bottom:14px}
.stat-card__value{font-size:26px;font-weight:800}
.stat-card__label{font-size:13px;color:var(--text-muted);font-weight:600;margin-top:2px}

.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.panel__header{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:18px 22px;border-bottom:1px solid var(--border)}
.panel__header h3{font-size:16px;flex:1}
.panel__toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.panel__toolbar input,.panel__toolbar select{
  padding:9px 12px;border-radius:var(--radius-sm);border:1.5px solid var(--border);font-size:13.5px;font-family:inherit;outline:none;
}
.panel__toolbar input:focus,.panel__toolbar select:focus{border-color:var(--accent)}
.panel__body{padding:0}

/* ---------- Table ---------- */
.table-wrap{overflow-x:auto}
table.data-table{width:100%;border-collapse:collapse;font-size:14px}
.data-table th{
  text-align:left;padding:12px 20px;font-size:12px;text-transform:uppercase;letter-spacing:.04em;
  color:var(--text-muted);border-bottom:1px solid var(--border);background:#fafafe;white-space:nowrap;
}
.data-table td{padding:13px 20px;border-bottom:1px solid var(--border);vertical-align:middle}
.data-table tbody tr:hover{background:#fafbff}
.data-table tbody tr:last-child td{border-bottom:none}
.row-actions{display:flex;gap:6px;justify-content:flex-end}
.empty-state{padding:60px 20px;text-align:center;color:var(--text-muted)}
.empty-state i{font-size:32px;margin-bottom:12px;opacity:.5;display:block}

/* ---------- Badge ---------- */
.badge{display:inline-flex;align-items:center;gap:5px;padding:4px 10px;border-radius:100px;font-size:12px;font-weight:700}
.badge--success{background:var(--success-soft);color:var(--success)}
.badge--warning{background:var(--warning-soft);color:var(--warning)}
.badge--muted{background:var(--bg);color:var(--text-muted)}
.badge--danger{background:var(--danger-soft);color:var(--danger)}

/* ---------- Modal ---------- */
.modal-overlay{position:fixed;inset:0;background:rgba(15,16,32,.55);display:flex;align-items:center;justify-content:center;padding:20px;z-index:100;animation:fadeIn .15s ease}
.modal-box{background:var(--surface);border-radius:16px;width:100%;max-width:520px;max-height:90vh;display:flex;flex-direction:column;box-shadow:0 30px 60px -20px rgba(0,0,0,.4)}
.modal-box.modal-box--lg{max-width:760px}
.modal-box__header{display:flex;align-items:center;padding:18px 22px;border-bottom:1px solid var(--border)}
.modal-box__header h3{flex:1;font-size:17px}
.modal-box__body{padding:22px;overflow-y:auto;display:flex;flex-direction:column;gap:14px}
.modal-box__footer{display:flex;justify-content:flex-end;gap:10px;padding:16px 22px;border-top:1px solid var(--border)}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}

.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-grid .field--full{grid-column:1/-1}
@media(max-width:520px){.form-grid{grid-template-columns:1fr}}

/* ---------- Toast ---------- */
.toast-root{position:fixed;bottom:20px;right:20px;display:flex;flex-direction:column;gap:10px;z-index:200}
.toast{
  background:var(--text);color:#fff;padding:12px 18px;border-radius:var(--radius-sm);font-size:13.5px;font-weight:600;
  box-shadow:0 10px 30px -8px rgba(0,0,0,.4);display:flex;align-items:center;gap:10px;animation:slideIn .2s ease;max-width:320px;
}
.toast--success{background:var(--success)}
.toast--error{background:var(--danger)}
@keyframes slideIn{from{transform:translateY(10px);opacity:0}to{transform:translateY(0);opacity:1}}

/* ---------- Transfer cart ---------- */
.transfer-layout{display:grid;grid-template-columns:1.3fr 1fr;gap:20px;align-items:start}
@media(max-width:900px){.transfer-layout{grid-template-columns:1fr}}
.cart-item{display:flex;align-items:center;gap:10px;padding:10px 0;border-bottom:1px solid var(--border)}
.cart-item:last-child{border-bottom:none}
.cart-item__name{flex:1;font-weight:600;font-size:13.5px}
.cart-item__qty{width:70px;padding:6px 8px;border:1.5px solid var(--border);border-radius:6px;text-align:center}
.stock-pill{font-size:12px;color:var(--text-muted)}

/* ---------- Responsive ---------- */
@media(max-width:860px){
  .sidebar{position:fixed;left:0;top:0;bottom:0;z-index:50;transform:translateX(-100%)}
  .sidebar.open{transform:translateX(0)}
  .topbar__burger{display:inline-flex}
  .page-content{padding:16px}
  .topbar{padding:12px 16px}
}