:root {
    --brand-roxo: #423460;
    --brand-verde: #8A9A40;
    --brand-vermelho: #E3242B;
    --primary-color: var(--brand-roxo);
    --primary-hover: #31264a;
    --secondary-color: var(--brand-verde);
    --secondary-hover: #728034;
    --danger-color: var(--brand-vermelho);
    --danger-hover: #bd1d23;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-color: #334155;
    --title-color: var(--brand-roxo);
    --border-color: #e2e8f0;
    --border-radius: 8px;
    --header-height: 72px;
    --sidebar-width: 276px;
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, .06);
    --shadow-md: 0 16px 42px rgba(49, 38, 74, .12);
    --transition: 180ms ease;
}

* { box-sizing: border-box; }
html { font-family: Inter, "Segoe UI", Arial, sans-serif; color: var(--text-color); background: var(--bg-color); }
body { margin: 0; min-height: 100vh; }
body::selection { background: #ded8eb; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }

.app-shell { display: grid; grid-template-columns: var(--sidebar-width) minmax(0, 1fr); min-height: 100vh; }
.sidebar { position: sticky; top: 0; z-index: 30; display: flex; flex-direction: column; height: 100vh; padding: 22px 15px; overflow-y: auto; color: #fff; background: linear-gradient(180deg, #423460 0%, #352947 100%); }
.brand { display: flex; align-items: center; gap: 12px; padding: 0 9px 20px; border-bottom: 1px solid rgba(255,255,255,.12); }
.brand-mark { display: grid; place-items: center; flex: 0 0 43px; width: 43px; height: 43px; border-radius: 11px; color: #fff; background: var(--secondary-color); box-shadow: 0 8px 22px rgba(0,0,0,.18); font-weight: 900; letter-spacing: .03em; }
.brand strong, .brand small { display: block; }
.brand strong { font-size: 1.04rem; letter-spacing: .04em; }
.brand small { margin-top: 3px; color: rgba(255,255,255,.65); font-size: .7rem; }
.nav-menu { display: grid; gap: 4px; margin-top: 13px; }
.nav-group { margin: 17px 12px 6px; color: rgba(255,255,255,.44); font-size: .63rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.nav-item { display: flex; align-items: center; gap: 11px; min-height: 42px; padding: 8px 11px; border-radius: var(--border-radius); color: rgba(255,255,255,.76); font-size: .82rem; transition: background var(--transition), color var(--transition), transform var(--transition); }
.nav-item span { display: grid; place-items: center; width: 27px; height: 27px; border-radius: 6px; background: rgba(255,255,255,.09); font-size: .65rem; font-weight: 900; }
.nav-item:hover { color: #fff; background: rgba(255,255,255,.09); transform: translateX(2px); }
.nav-item.active { color: #fff; background: rgba(255,255,255,.14); box-shadow: inset 3px 0 var(--secondary-color); }
.sidebar-footer { display: grid; gap: 3px; margin-top: auto; padding: 16px 10px 2px; border-top: 1px solid rgba(255,255,255,.12); }
.sidebar-footer small, .sidebar-footer span { color: rgba(255,255,255,.6); font-size: .7rem; text-transform: capitalize; }
.sidebar-footer strong { font-size: .82rem; }
.sidebar-backdrop { display: none; }

.main-area { min-width: 0; }
.topbar { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; justify-content: space-between; height: var(--header-height); padding: 0 28px; border-bottom: 1px solid var(--border-color); background: rgba(255,255,255,.93); backdrop-filter: blur(14px); }
.topbar h1 { margin: 2px 0 0; color: var(--title-color); font-size: 1.22rem; }
.eyebrow { margin: 0; color: var(--secondary-color); font-size: .65rem; font-weight: 900; letter-spacing: .13em; text-transform: uppercase; }
.content { width: 100%; max-width: 1660px; margin: 0 auto; padding: 28px; }
.menu-toggle { display: none; }

.welcome-card { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 20px; padding: 23px 25px; overflow: hidden; border-radius: 12px; color: #fff; background: linear-gradient(115deg, var(--primary-color), #5b477d); box-shadow: var(--shadow-md); }
.welcome-card h2 { margin: 6px 0; font-size: clamp(1.3rem, 2.3vw, 1.8rem); }
.welcome-card p:last-child { margin: 0; color: rgba(255,255,255,.72); font-size: .83rem; }
.welcome-card .eyebrow { color: #c7d285; }

.card { border: 1px solid var(--border-color); border-radius: var(--border-radius); background: var(--card-bg); box-shadow: var(--shadow-sm); }
.card-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 19px 21px; border-bottom: 1px solid var(--border-color); }
.card-header h2 { margin: 4px 0 0; color: var(--title-color); font-size: 1.06rem; }
.card-header .muted { margin: 6px 0 0; }
.muted, .help-text { color: #64748b; font-size: .78rem; }

.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 38px; padding: 8px 14px; border: 1px solid transparent; border-radius: var(--border-radius); font-size: .8rem; font-weight: 800; cursor: pointer; transition: background var(--transition), border var(--transition), transform var(--transition), box-shadow var(--transition); }
.btn:hover { transform: translateY(-1px); }
.btn:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible { outline: 3px solid rgba(138,154,64,.28); outline-offset: 2px; }
.btn-primary { color: #fff; background: var(--primary-color); }
.btn-primary:hover { background: var(--primary-hover); box-shadow: 0 8px 18px rgba(66,52,96,.18); }
.btn-secondary { color: #fff; background: var(--secondary-color); }
.btn-secondary:hover { background: var(--secondary-hover); }
.btn-danger { color: #fff; background: var(--danger-color); }
.btn-danger:hover { background: var(--danger-hover); }
.btn-ghost { color: var(--primary-color); border-color: var(--border-color); background: #fff; }
.btn-ghost:hover { border-color: #c6bdd8; background: #f8f6fb; }
.btn-small { min-height: 31px; padding: 5px 9px; font-size: .72rem; }
.btn-block { width: 100%; }

.metric-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 13px; margin-bottom: 20px; }
.metric-card { position: relative; min-height: 132px; padding: 17px; overflow: hidden; border: 1px solid var(--border-color); border-radius: var(--border-radius); background: #fff; box-shadow: var(--shadow-sm); transition: transform var(--transition), box-shadow var(--transition), border var(--transition); }
.metric-card:hover { transform: translateY(-2px); border-color: #d3cce0; box-shadow: 0 10px 25px rgba(66,52,96,.09); }
.metric-card p { margin: 0; color: #64748b; font-size: .74rem; font-weight: 800; }
.metric-card strong { display: block; margin: 12px 0 5px; color: var(--title-color); font-size: 1.65rem; }
.metric-card small { color: #94a3b8; font-size: .68rem; }
.metric-accent { position: absolute; right: 0; bottom: 0; left: 0; height: 4px; background: linear-gradient(90deg, var(--secondary-color), var(--primary-color)); }
.dashboard-grid { display: grid; grid-template-columns: minmax(0, 2fr) minmax(300px, 1fr); gap: 20px; }

.table-wrap { overflow: auto; }
table { width: 100%; border-collapse: collapse; font-size: .79rem; }
th, td { padding: 12px 15px; border-bottom: 1px solid var(--border-color); text-align: left; white-space: nowrap; }
th { color: #64748b; background: #fbfcfe; font-size: .64rem; font-weight: 900; letter-spacing: .07em; text-transform: uppercase; }
tbody tr:hover { background: #fbfafc; }
.actions { text-align: right; }
.action-row { display: flex; justify-content: flex-end; gap: 6px; }
.badge { display: inline-flex; align-items: center; padding: 4px 8px; border-radius: 999px; color: var(--primary-color); background: #eeeaf5; font-size: .64rem; font-weight: 900; text-transform: uppercase; }
.badge-success { color: #5d6a27; background: #edf2df; }
.badge-danger { color: var(--danger-color); background: #feecee; }
.timeline { padding: 12px 21px; }
.timeline-item { display: flex; gap: 12px; padding: 10px 0; }
.timeline-item > span { flex: 0 0 10px; width: 10px; height: 10px; margin-top: 5px; border-radius: 50%; background: var(--secondary-color); box-shadow: 0 0 0 4px #edf2df; }
.timeline-item strong { color: var(--title-color); font-size: .78rem; }
.timeline-item p, .timeline-item small { margin: 3px 0 0; color: #64748b; font-size: .71rem; }
.pagination { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 13px 20px; color: #64748b; font-size: .74rem; }
.pagination > div { display: flex; gap: 7px; }

.search-bar { display: flex; gap: 9px; padding: 15px 21px; border-bottom: 1px solid var(--border-color); }
.search-bar input { flex: 1; }
.resource-header { align-items: flex-start; }
.form-card { max-width: 1080px; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 17px; padding: 23px; }
.form-stack { display: grid; gap: 17px; }
.form-grid label, .form-stack label { display: grid; gap: 7px; color: var(--title-color); font-size: .75rem; font-weight: 800; }
input, textarea, select { width: 100%; min-height: 40px; padding: 9px 11px; border: 1px solid #cbd5e1; border-radius: var(--border-radius); outline: none; color: var(--text-color); background: #fff; transition: border var(--transition), box-shadow var(--transition); }
textarea { resize: vertical; }
input:focus, textarea:focus, select:focus { border-color: var(--primary-color); box-shadow: 0 0 0 3px rgba(66,52,96,.10); }
.field-full { grid-column: 1 / -1; }
.checkbox-field { display: flex; align-items: center; gap: 8px; min-height: 40px; }
.checkbox-field input { width: auto; min-height: auto; }
.form-actions { display: flex; justify-content: flex-end; gap: 9px; padding-top: 5px; }
.form-section-title { margin: 4px 0 -3px; padding: 0 0 9px; border-bottom: 1px solid var(--border-color); color: var(--title-color); font-size: .86rem; }

.alert { margin-bottom: 15px; padding: 11px 14px; border: 1px solid; border-radius: var(--border-radius); font-size: .8rem; }
.alert-success { color: #526020; border-color: #cdd8a2; background: #f2f6e8; }
.alert-danger { color: #a9181e; border-color: #ffc8cb; background: #fff0f1; }
.alert-warning { color: #66551d; border-color: #ead89b; background: #fff9e8; }
.empty-state { padding: 34px; color: #64748b; text-align: center; }
.empty-state h2 { color: var(--title-color); }
.error-state { max-width: 620px; margin: 40px auto; }
.empty-icon { display: grid; place-items: center; width: 48px; height: 48px; margin: 0 auto; border-radius: 50%; color: #fff; background: var(--danger-color); font-size: 1.4rem; font-weight: 900; }

.login-page { display: grid; place-items: center; min-height: 100vh; padding: 30px; background: linear-gradient(90deg, var(--primary-color) 0 56%, var(--bg-color) 56% 100%); }
.login-shell { display: grid; grid-template-columns: 1.15fr .85fr; align-items: center; gap: 70px; width: min(1060px, 100%); }
.login-brand { max-width: 570px; color: #fff; }
.login-brand .brand-mark { margin-bottom: 28px; }
.login-brand .eyebrow { color: #c7d285; }
.login-brand h1 { margin: 11px 0 18px; font-size: clamp(2.1rem, 3.8vw, 3.45rem); line-height: 1.04; }
.login-brand > p:last-child { color: rgba(255,255,255,.7); line-height: 1.7; }
.login-card { padding: 34px; border: 1px solid var(--border-color); border-radius: 14px; background: #fff; box-shadow: var(--shadow-md); }
.login-card h2 { margin: 7px 0 24px; color: var(--title-color); }
.login-card .help-text { margin: 16px 0 0; text-align: center; }

.measurement-card { max-width: none; }
.measurement-history { margin-top: 20px; }
.calculation-panel { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 9px; padding: 13px; border: 1px solid #ded8eb; border-radius: var(--border-radius); background: #f7f5fb; }
.calculation-panel div { padding: 9px; border-radius: 6px; background: #fff; }
.calculation-panel small, .calculation-panel strong { display: block; }
.calculation-panel small { margin-bottom: 7px; color: #64748b; }
.calculation-panel strong { color: var(--title-color); }
.sheet-summary-card { margin-bottom: 20px; }
.sheet-summary { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; margin: 0; padding: 8px 21px 19px; }
.sheet-summary > div { padding: 11px 13px; border-bottom: 1px solid var(--border-color); }
.sheet-summary dt { color: #64748b; font-size: .64rem; font-weight: 900; letter-spacing: .06em; text-transform: uppercase; }
.sheet-summary dd { margin: 5px 0 0; color: var(--title-color); font-size: .8rem; font-weight: 700; line-height: 1.45; }
.sheet-summary .summary-wide { grid-column: span 2; }
.certificate-actions { display: flex; align-items: center; justify-content: flex-end; gap: 8px; flex-wrap: wrap; }
.certificate-actions form { margin: 0; }
.certificate-hint { margin: 0 21px 18px; padding: 11px 13px; border-left: 4px solid var(--secondary-color); background: #f5f7eb; color: #526020; font-size: .76rem; }
.certificate-archive { display: grid; gap: 4px; margin: 0 21px 18px; padding: 12px 14px; border: 1px solid #d8e1b4; border-radius: var(--border-radius); background: #f7f9ef; font-size: .75rem; overflow-wrap: anywhere; }
.certificate-archive strong { color: var(--title-color); }
.certificate-archive small { color: #64748b; }
.calculation-note { display: flex; align-items: flex-start; gap: 10px; padding: 12px 14px; border-left: 4px solid var(--secondary-color); border-radius: 0 var(--border-radius) var(--border-radius) 0; color: #526020; background: #f5f7eb; font-size: .76rem; line-height: 1.55; }
.calculation-note strong { color: var(--title-color); white-space: nowrap; }

@media (max-width: 1220px) {
    .metric-grid { grid-template-columns: repeat(3, 1fr); }
    .calculation-panel { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 860px) {
    .app-shell { grid-template-columns: 1fr; }
    .sidebar { position: fixed; left: 0; width: var(--sidebar-width); transform: translateX(-101%); transition: transform var(--transition); }
    body.menu-open { overflow: hidden; }
    body.menu-open .sidebar { transform: translateX(0); }
    .sidebar-backdrop { position: fixed; inset: 0; z-index: 25; display: block; visibility: hidden; border: 0; opacity: 0; background: rgba(15,23,42,.48); transition: opacity var(--transition), visibility var(--transition); }
    body.menu-open .sidebar-backdrop { visibility: visible; opacity: 1; }
    .menu-toggle { display: grid; gap: 4px; width: 39px; height: 39px; padding: 10px; border: 1px solid var(--border-color); border-radius: var(--border-radius); background: #fff; }
    .menu-toggle span { display: block; height: 2px; border-radius: 2px; background: var(--primary-color); }
    .topbar { gap: 12px; padding: 0 16px; }
    .topbar > div { flex: 1; }
    .content { padding: 18px; }
    .dashboard-grid { grid-template-columns: 1fr; }
    .login-page { background: var(--primary-color); }
    .login-shell { grid-template-columns: 1fr; gap: 25px; }
    .login-brand > p:last-child { display: none; }
    .form-grid { grid-template-columns: 1fr; }
    .field-full { grid-column: auto; }
    .sheet-summary { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 580px) {
    .content { padding: 14px; }
    .topbar h1 { font-size: 1.05rem; }
    .topbar form { display: none; }
    .welcome-card { align-items: flex-start; flex-direction: column; padding: 20px; }
    .metric-grid { grid-template-columns: repeat(2, 1fr); }
    .metric-card { min-height: 120px; }
    .resource-header { align-items: stretch; flex-direction: column; }
    .search-bar { flex-wrap: wrap; }
    .search-bar input { flex-basis: 100%; }
    .login-page { padding: 18px; }
    .login-card { padding: 25px; }
    .sheet-summary { grid-template-columns: 1fr; padding: 6px 14px 16px; }
    .sheet-summary .summary-wide { grid-column: auto; }
    .calculation-note { display: grid; }
    .calculation-panel { grid-template-columns: repeat(2, 1fr); }
    .form-actions { align-items: stretch; flex-direction: column-reverse; }
    .form-actions .btn { width: 100%; }
    .certificate-actions { align-items: stretch; flex-direction: column; width: 100%; }
    .certificate-actions .btn, .certificate-actions form, .certificate-actions button { width: 100%; }
}