* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(180deg, #f4f7f0 0%, #ebf0e8 100%);
    color: #1f2937;
}
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
.shell { min-height: 100vh; display: grid; grid-template-columns: 280px 1fr; }
.sidebar { background: #17352f; color: #f9fafb; padding: 24px 20px; display: flex; flex-direction: column; gap: 24px; }
.brand { display: flex; gap: 12px; align-items: center; }
.brand-badge { width: 42px; height: 42px; border-radius: 12px; background: linear-gradient(135deg, #34d399, #14b8a6); display: grid; place-items: center; color: #0f172a; font-weight: 700; }
.nav { display: grid; gap: 8px; }
.nav a { padding: 11px 14px; border-radius: 10px; color: rgba(255,255,255,.75); }
.nav a.active, .nav a:hover { background: rgba(255,255,255,.09); color: #fff; }
.sidebar-footer { margin-top: auto; display: grid; gap: 12px; }
.main { padding: 28px; }
.topbar { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; margin-bottom: 24px; }
.eyebrow { text-transform: uppercase; letter-spacing: .08em; color: #6b7280; font-size: 12px; margin: 0; }
.title { margin: 6px 0 0; font-size: 32px; }
.panel, .stat, .flash, .auth-card, .auth-copy { background: rgba(255,255,255,.92); border: 1px solid #dde5da; border-radius: 18px; box-shadow: 0 18px 40px rgba(21, 34, 41, .08); }
.grid { display: grid; gap: 20px; }
.stats { grid-template-columns: repeat(4, minmax(0,1fr)); }
.stat { padding: 22px; }
.stat strong { display: block; font-size: 30px; margin: 10px 0 6px; }
.stat.accent { background: linear-gradient(135deg, #0f766e, #164e63); color: #fff; }
.content-grid { grid-template-columns: 1.2fr 1fr; }
.panel { padding: 22px; }
.panel-head { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 18px; }
.card-row { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 14px; margin-bottom: 20px; }
.mini-card { background: #f6f8f4; border: 1px solid #dde5da; border-radius: 14px; padding: 14px; }
.mini-card strong { display: block; margin-top: 6px; }
.btn, .btn-secondary, .btn-link { display: inline-flex; align-items: center; justify-content: center; border-radius: 12px; padding: 11px 15px; border: 1px solid transparent; cursor: pointer; }
.btn { background: linear-gradient(135deg, #0f766e, #0f766e); color: #fff; }
.btn-secondary { background: #fff; border-color: #d5ddd2; color: #1f2937; }
.btn-link { color: #0f766e; background: transparent; padding-left: 0; padding-right: 0; }
.flash { padding: 14px 16px; margin-bottom: 18px; }
.flash.success { background: #eefbf2; border-color: #bde3c7; }
.flash.error { background: #fff1f2; border-color: #fecdd3; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 12px 10px; border-bottom: 1px solid #e5ebe2; vertical-align: top; text-align: left; }
th { color: #6b7280; font-size: 13px; }
.badge { display: inline-flex; padding: 6px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; background: #e5e7eb; color: #374151; }
.badge.success { background: #dcfce7; color: #166534; }
.badge.warning { background: #fef3c7; color: #92400e; }
.badge.danger { background: #fee2e2; color: #b91c1c; }
.badge.info { background: #dbeafe; color: #1d4ed8; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; }
.stack { display: grid; gap: 16px; }
.full { grid-column: 1 / -1; }
label { display: block; color: #6b7280; margin-bottom: 6px; }
input, select, textarea {
    width: 100%; padding: 12px 14px; border-radius: 12px; border: 1px solid #d5ddd2; background: #fff;
}
textarea { min-height: 120px; resize: vertical; }
.filters { display: grid; grid-template-columns: repeat(5, minmax(0,1fr)); gap: 12px; margin-bottom: 18px; }
.auth-shell { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.auth-grid { width: min(1100px, 100%); display: grid; grid-template-columns: 1.2fr 420px; gap: 24px; }
.auth-copy { padding: 42px; background: linear-gradient(135deg, #0f766e, #153a36); color: #fff; }
.auth-card { padding: 30px; }
.muted { color: #6b7280; }
.auth-copy .muted, .auth-copy .eyebrow { color: rgba(255,255,255,.78); }
.demo { margin-top: 24px; background: rgba(255,255,255,.12); padding: 16px; border-radius: 14px; display: grid; gap: 6px; }
.avatar { width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center; background: rgba(255,255,255,.12); }
.user-box { display: flex; gap: 12px; align-items: center; padding: 14px; border-radius: 14px; background: rgba(255,255,255,.08); }
.toolbar { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.pagination { margin-top: 16px; }
.status-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 12px; margin-bottom: 18px; }
.photo { width: 88px; height: 88px; border-radius: 16px; object-fit: cover; border: 1px solid #d5ddd2; }
@media (max-width: 1080px) {
    .shell, .auth-grid, .stats, .content-grid, .filters, .form-grid, .card-row, .status-grid { grid-template-columns: 1fr; }
}