:root {
    --bg: #eef4f2;
    --panel: #ffffff;
    --panel-alt: #f6fbfa;
    --border: #d8e6e2;
    --ink: #17312f;
    --muted: #5a726d;
    --brand: #0f6d67;
    --brand-deep: #0b4e4a;
    --accent: #b8ddd7;
    --warn: #a05b12;
    --danger: #a62f2f;
    --shadow: 0 18px 40px rgba(15, 57, 52, 0.10);
    --radius: 22px;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: "Segoe UI", Arial, sans-serif; background: linear-gradient(160deg, #f7fbfa 0%, var(--bg) 100%); color: var(--ink); }
a { color: var(--brand-deep); }
button, input, select, textarea { font: inherit; }
.login-shell, .portal-shell { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login-card, .portal-card { width: min(100%, 460px); background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 28px; }
.brand-block { display: grid; gap: 10px; }
.brand-mark { font-size: 0.8rem; letter-spacing: 0.24em; text-transform: uppercase; color: var(--brand); margin-bottom: 12px; }
.brand-logo { max-width: 180px; max-height: 56px; object-fit: contain; }
.hidden { display: none !important; }
.muted { color: var(--muted); }
.small { font-size: 0.85rem; }
.stack { display: grid; gap: 14px; }
label { display: grid; gap: 6px; }
input, select, textarea { width: 100%; border: 1px solid var(--border); border-radius: 14px; padding: 12px 14px; background: var(--panel-alt); }
.btn { border: none; border-radius: 14px; padding: 12px 16px; cursor: pointer; }
.btn-primary { background: var(--brand); color: white; }
.btn-secondary { background: #dbe8e5; color: var(--ink); }
.inline-message { min-height: 22px; color: var(--danger); }
.lang-switch { display: flex; gap: 12px; margin-top: 18px; }
.app-shell { min-height: 100vh; display: grid; grid-template-columns: 280px 1fr; }
.sidebar { background: #123c38; color: white; padding: 28px; display: flex; flex-direction: column; justify-content: space-between; }
.nav-stack { display: grid; gap: 10px; margin: 36px 0; }
.nav-link { text-align: left; padding: 12px 14px; border-radius: 14px; border: 1px solid rgba(255,255,255,0.12); background: transparent; color: white; }
.nav-link.active { background: rgba(184, 221, 215, 0.18); }
.workspace { padding: 28px; }
.workspace-header { display: flex; justify-content: space-between; align-items: start; gap: 24px; margin-bottom: 24px; }
.header-tools { display: flex; flex-wrap: wrap; justify-content: end; gap: 14px; align-items: center; }
.operation-picker { min-width: 240px; }
.header-pill { padding: 10px 14px; border-radius: 999px; background: white; border: 1px solid var(--border); }
.screen { display: none; }
.screen.active { display: block; }
.card-grid { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.card, .panel { background: var(--panel); border: 1px solid var(--border); border-radius: 20px; box-shadow: var(--shadow); padding: 20px; }
.kpi { font-size: 2rem; font-weight: 700; }
.toolbar { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 18px; }
.two-col { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 18px; }
.list { display: grid; gap: 12px; }
.item { border: 1px solid var(--border); border-radius: 16px; padding: 14px; background: var(--panel-alt); }
.badge { display: inline-flex; padding: 6px 10px; border-radius: 999px; background: var(--accent); color: var(--brand-deep); font-size: 0.85rem; }
.badge.warn { background: #ffe5c9; color: var(--warn); }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }
pre.json { background: #f3faf8; border: 1px solid var(--border); border-radius: 16px; padding: 14px; overflow: auto; font-size: 0.9rem; }
@media (max-width: 960px) {
    .app-shell { grid-template-columns: 1fr; }
    .sidebar { gap: 16px; }
    .two-col { grid-template-columns: 1fr; }
    .header-tools { justify-content: stretch; }
    .operation-picker { width: 100%; }
}