:root {
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --ink: #0f172a;
  --muted: #667085;
  --soft: #f6f8fb;
  --line: #e4e9f2;
  --panel: #ffffff;
  --success: #16a34a;
  --warning: #f59e0b;
  --danger: #dc2626;
  --shadow: 0 18px 50px rgba(15, 23, 42, 0.08);
  --radius: 8px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: #fff; color: var(--ink); }
a { color: inherit; text-decoration: none; }
svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.app { display: grid; grid-template-columns: 232px minmax(0, 1fr); min-height: 100vh; background: linear-gradient(90deg, #fff 0 232px, var(--soft) 232px); }
.sidebar { position: sticky; top: 0; height: 100vh; padding: 22px 18px; border-right: 1px solid var(--line); background: rgba(255,255,255,.92); }
.brand { display: inline-flex; align-items: center; gap: 10px; margin-bottom: 28px; color: #0b1b4f; }
.brand.compact { margin: 0; }
.brand strong { display: block; line-height: 1.02; font-size: 20px; }
.brand-icon { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 12px; color: var(--blue); background: #eef4ff; }
.brand-icon svg { width: 26px; height: 26px; stroke-width: 2.2; }
.nav { display: grid; gap: 6px; }
.nav a { padding: 11px 12px; border-radius: var(--radius); color: #344054; font-weight: 650; }
.nav a.active, .nav a:hover { background: #eef4ff; color: var(--blue-dark); }

.main { min-width: 0; padding: 22px 28px 36px; }
.topbar { display: flex; justify-content: space-between; align-items: center; gap: 20px; margin-bottom: 22px; }
.kicker { margin: 0 0 4px; color: var(--blue); font-size: 13px; font-weight: 800; letter-spacing: 0; }
h1,h2,h3,p { margin-top: 0; }
h1 { margin-bottom: 0; font-size: clamp(24px, 3vw, 34px); line-height: 1.12; }
h2 { margin-bottom: 6px; font-size: 20px; }
h3 { margin-bottom: 12px; font-size: 16px; color: var(--blue-dark); }
p, small { color: var(--muted); }

.top-actions { display: flex; align-items: center; gap: 12px; }
.icon-button { position: relative; display: grid; place-items: center; width: 38px; height: 38px; border: 1px solid var(--line); border-radius: 50%; background: #fff; color: #1f2a44; cursor: pointer; }
.badge { position: absolute; top: -4px; right: -4px; display: grid; place-items: center; width: 18px; height: 18px; border-radius: 50%; background: var(--danger); color: #fff; font-size: 11px; font-weight: 800; }
.user-chip { display: flex; align-items: center; gap: 10px; padding: 6px 10px 6px 6px; border: 1px solid var(--line); border-radius: 999px; background: #fff; }
.user-chip > span { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: #dbe6ff; color: var(--blue-dark); font-weight: 800; }
.user-chip strong, .user-chip small { display: block; line-height: 1.1; }

.view { display: none; }
.view.active { display: grid; gap: 18px; }
.hero-grid { display: grid; grid-template-columns: minmax(330px, 1.25fr) minmax(280px, .85fr) minmax(260px, .7fr); gap: 18px; }
.panel { border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); box-shadow: 0 1px 2px rgba(15,23,42,.03); padding: 20px; }
.panel-title { margin-bottom: 18px; }
.metrics { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.metric { min-height: 118px; padding: 18px; border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(180deg,#fff,#f9fbff); }
.metric span { color: #172554; font-weight: 750; }
.metric strong { display: block; margin: 16px 0 4px; font-size: 30px; }
.metric small { display: block; }

.dropzone { display: grid; place-items: center; width: 100%; min-height: 168px; padding: 22px; border: 1px dashed #b9c7dd; border-radius: var(--radius); background: #fbfdff; color: var(--ink); cursor: pointer; }
.dropzone svg { width: 38px; height: 38px; color: var(--blue); }
.dropzone span { color: var(--muted); font-size: 13px; }
.inline-form, .validate-form { display: flex; gap: 10px; margin: 18px 0 10px; }
input, select, textarea { width: 100%; border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 13px; background: #fff; color: var(--ink); font: inherit; }
textarea { min-height: 96px; resize: vertical; }
label { display: grid; gap: 6px; color: #344054; font-size: 13px; font-weight: 700; }
.button { display: inline-flex; justify-content: center; align-items: center; min-height: 42px; padding: 0 16px; border: 0; border-radius: var(--radius); background: var(--blue); color: #fff; font-weight: 800; cursor: pointer; white-space: nowrap; }
.button:hover { background: var(--blue-dark); }
.button.secondary { border: 1px solid var(--line); background: #fff; color: var(--blue-dark); }
.button:disabled { opacity: .55; cursor: default; }

.flow-strip { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 14px; }
.flow-strip div { display: grid; gap: 8px; min-width: 0; }
.flow-strip span { display: grid; place-items: center; width: 58px; height: 58px; border-radius: 50%; background: #f0f5ff; color: var(--blue); }
.flow-strip strong { font-size: 13px; }
.flow-strip small { line-height: 1.35; }

.example-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 14px; }
.mini-product { min-height: 250px; overflow: hidden; }
.mock-card, .choice-list, .tracking, .certificate-card { display: grid; gap: 10px; }
.signer-row { display: grid; grid-template-columns: 28px minmax(0, 1fr) auto; gap: 10px; align-items: center; padding: 10px; border: 1px solid var(--line); border-radius: var(--radius); }
.signer-row span { display: grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; background: #eef4ff; color: var(--blue); font-weight: 800; }
.signer-row button { border: 1px solid var(--line); border-radius: 6px; background: #fff; padding: 6px 9px; }
.choice-list label { display: flex; align-items: center; justify-content: space-between; padding: 13px; border: 1px solid var(--line); border-radius: var(--radius); font-weight: 700; }
.choice-list.large { max-width: 560px; }
.tracking div { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 4px 10px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.tracking small { grid-column: 1 / -1; }

.section-header { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.tabs { display: flex; flex-wrap: wrap; gap: 8px; }
.tabs button { border: 1px solid var(--line); border-radius: 999px; background: #fff; padding: 9px 14px; color: #344054; font-weight: 750; cursor: pointer; }
.tabs button.active { border-color: #bfd0ff; background: #eef4ff; color: var(--blue-dark); }
.table-panel { overflow-x: auto; padding: 0; }
table { width: 100%; min-width: 850px; border-collapse: collapse; }
th, td { padding: 15px 16px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { color: var(--muted); font-size: 12px; text-transform: uppercase; }
td small { display: block; margin-top: 4px; color: var(--muted); }
.status { display: inline-flex; padding: 5px 9px; border-radius: 999px; background: #eef4ff; color: var(--blue-dark); font-size: 12px; font-weight: 850; }
.status.concluido { background: #ecfdf3; color: var(--success); }
.status.expirado { background: #fff7ed; color: var(--warning); }
.status.revogado { background: #fef2f2; color: var(--danger); }
.text-link { color: var(--blue); font-weight: 800; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; }
.template-card { display: grid; gap: 10px; min-height: 150px; }
.template-card span { color: var(--blue); font-weight: 800; font-size: 13px; }

.public-validator { display: grid; place-items: start center; }
.public-validator .panel { width: min(760px, 100%); }
.verification-result { display: grid; gap: 14px; margin-top: 18px; }
.verification-result.compact { font-size: 12px; }
.valid, .invalid { display: grid; gap: 4px; padding: 13px; border-radius: var(--radius); }
.valid { background: #ecfdf3; color: #14532d; }
.invalid { background: #fef2f2; color: #7f1d1d; }
dl { display: grid; grid-template-columns: 110px minmax(0,1fr); gap: 8px; margin: 0; }
dt { color: var(--muted); }
dd { margin: 0; overflow-wrap: anywhere; }
.signer-list { display: grid; gap: 6px; }
.signer-list span { padding: 8px 10px; border: 1px solid var(--line); border-radius: var(--radius); }
.certificate-card { position: relative; min-height: 180px; padding: 14px; border: 1px solid var(--line); border-radius: var(--radius); }
.qr-mock { width: 64px; height: 64px; background:
  linear-gradient(90deg,#111 10px,transparent 10px 16px,#111 16px 24px,transparent 24px),
  linear-gradient(#111 10px,transparent 10px 16px,#111 16px 24px,transparent 24px), #fff;
  background-size: 24px 24px; border: 6px solid #fff; box-shadow: inset 0 0 0 1px #111; }
.qr-mock.small { position: absolute; right: 12px; bottom: 12px; width: 58px; height: 58px; }

.settings-grid { display: grid; grid-template-columns: minmax(280px, .85fr) minmax(320px, 1.15fr); gap: 18px; }
.form { display: grid; gap: 14px; }
.integration-list { display: grid; gap: 10px; margin-top: 14px; }
.integration-list div, .profile-meta { display: flex; justify-content: space-between; gap: 10px; padding: 12px; border: 1px solid var(--line); border-radius: var(--radius); }
.integration-list strong { color: var(--success); }
.profile-panel { max-width: 620px; }

.wizard { width: min(860px, calc(100vw - 32px)); border: 0; border-radius: 14px; padding: 0; box-shadow: var(--shadow); }
.wizard::backdrop { background: rgba(15,23,42,.36); }
.wizard-shell { padding: 0; }
.wizard header, .wizard footer { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 18px 20px; border-bottom: 1px solid var(--line); }
.wizard footer { border-top: 1px solid var(--line); border-bottom: 0; }
.wizard-steps { display: flex; flex-wrap: wrap; gap: 8px; padding: 14px 20px; background: var(--soft); }
.wizard-steps span { padding: 8px 10px; border-radius: 999px; color: var(--muted); font-size: 13px; font-weight: 800; }
.wizard-steps span.active { background: #eef4ff; color: var(--blue-dark); }
.wizard-body { min-height: 330px; padding: 22px; }
.wizard-upload { display: grid; place-items: center; gap: 16px; min-height: 280px; border: 1px dashed #b9c7dd; border-radius: var(--radius); }
.wizard-upload svg { width: 46px; height: 46px; color: var(--blue); }
.format-pills { display: flex; gap: 8px; }
.format-pills span { padding: 7px 10px; border-radius: 999px; background: #eef4ff; color: var(--blue-dark); font-weight: 800; }
.form-grid { display: grid; gap: 14px; }
.signer-edit { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 12px; padding: 14px; border: 1px solid var(--line); border-radius: var(--radius); }
.check-row { display: flex; align-items: center; gap: 8px; }
.check-row input { width: auto; }
.review-box { display: grid; gap: 12px; max-width: 620px; }

.sign-page, .validate-page { background: var(--soft); }
.sign-shell { display: grid; grid-template-columns: minmax(0,1fr) 420px; min-height: 100vh; }
.sign-document { display: grid; place-items: center; padding: 34px; }
.document-paper { width: min(760px, 100%); min-height: 86vh; padding: 42px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow); }
.paper-header, .qr-footer { display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.paper-lines { height: 420px; margin: 34px 0; background: repeating-linear-gradient(#fff 0 22px, #eef2f7 23px 24px); }
.qr-footer { justify-content: flex-start; padding-top: 20px; border-top: 1px solid var(--line); }
.qr-footer small { display: block; }
.sign-aside { display: grid; align-content: center; gap: 18px; padding: 28px; border-left: 1px solid var(--line); background: #fff; }
.step-pills { display: flex; flex-wrap: wrap; gap: 8px; }
.step-pills span { padding: 7px 9px; border-radius: 999px; background: var(--soft); color: var(--muted); font-size: 12px; font-weight: 800; }
.step-pills span.active { background: #eef4ff; color: var(--blue-dark); }
.detail-list { display: grid; gap: 10px; }
.detail-list div { display: grid; gap: 4px; padding: 12px; border: 1px solid var(--line); border-radius: var(--radius); }
.detail-list span { color: var(--muted); font-size: 13px; }
.signature-options { display: grid; gap: 8px; }
.signature-options label { display: flex; align-items: center; gap: 8px; }
.signature-options input { width: auto; }
.signature-input { font-size: 20px; font-family: Georgia, serif; }

.validate-shell { display: grid; place-items: center; min-height: 100vh; padding: 24px; }
.validate-card { width: min(720px, 100%); padding: 28px; border: 1px solid var(--line); border-radius: 14px; background: #fff; box-shadow: var(--shadow); }

@media (max-width: 1200px) {
  .hero-grid, .example-grid { grid-template-columns: 1fr 1fr; }
  .intro-panel { grid-column: 1 / -1; }
  .flow-strip { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 860px) {
  .app { grid-template-columns: 1fr; background: var(--soft); }
  .sidebar { position: static; height: auto; display: flex; align-items: center; justify-content: space-between; gap: 14px; overflow-x: auto; }
  .brand { margin-bottom: 0; }
  .nav { display: flex; min-width: max-content; }
  .main { padding: 18px; }
  .topbar, .section-header, .inline-form, .validate-form { align-items: stretch; flex-direction: column; }
  .top-actions { justify-content: space-between; }
  .hero-grid, .metrics, .example-grid, .settings-grid, .sign-shell { grid-template-columns: 1fr; }
  .flow-strip { grid-template-columns: 1fr 1fr; }
  .signer-edit { grid-template-columns: 1fr; }
  .sign-aside { border-left: 0; border-top: 1px solid var(--line); }
  .document-paper { min-height: 620px; padding: 24px; }
}

@media (max-width: 520px) {
  .flow-strip { grid-template-columns: 1fr; }
  .user-chip div { display: none; }
  .wizard { width: calc(100vw - 18px); }
  dl { grid-template-columns: 1fr; }
}