*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  /* Base */
  --bg: #F4F7FB;
  --surface: #FFFFFF;

  /* Texto */
  --ink: #0A0F1C;
  --ink-soft: #334155;
  --ink-muted: #94A3B8;

  /* Azul Klein fosco (menos saturado) */
  --accent: #1E3A8A;        /* azul profundo e mais “soft” */
  --accent-light: #3B5BDB;  /* destaque mais suave */

  /* Estrutura */
  --line: #E2E8F0;
  --warm: #EEF2FF;

  /* Detalhe opcional */
  --gold: #C7A94F;

  /* Sistema inteiro alinhado */
  --purple: #1E3A8A;
  --purple-bg: #E8EDFF;

  --teal: #1E3A8A;
  --teal-bg: #E8EDFF;

  --amber: #1E3A8A;
  --amber-bg: #E8EDFF;

  --green: #1E3A8A;
  --green-bg: #E8EDFF;

  --coral: #1E3A8A;
  --coral-bg: #E8EDFF;

  --blue: #1E3A8A;
  --blue-bg: #E8EDFF;

  /* UI */
  --radius: 12px;

  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'DM Sans', sans-serif;
}
 body {
   background: var(--bg);
   color: var(--ink);
   font-family: var(--font-body);
   min-height: 100vh;
   padding: 0;
 }
 /* Header */
 header {
   background: var(--accent);
   color: #fff;
   padding: 28px 48px;
   display: flex;
   align-items: center;
   justify-content: space-between;
   border-bottom: 3px solid var(--gold);
 }
 .logo {
   display: flex;
   align-items: baseline;
   gap: 10px;
 }
 .logo-mark {
   font-family: var(--font-display);
   font-size: 28px;
   font-weight: 700;
   letter-spacing: -0.5px;
   color: #fff;
 }
 .logo-tag {
   font-size: 11px;
   font-weight: 500;
   letter-spacing: 2px;
   text-transform: uppercase;
   color: rgba(255,255,255,0.55);
 }
 .header-meta {
   font-size: 13px;
   color: rgba(255,255,255,0.6);
   font-weight: 300;
 }
 /* Hero strip */
 .hero {
   background: var(--surface);
   border-bottom: 1px solid var(--line);
   padding: 40px 48px 36px;
   display: flex;
   align-items: flex-end;
   justify-content: space-between;
   gap: 24px;
 }
 .hero h1 {
   font-family: var(--font-display);
   font-size: 42px;
   font-weight: 700;
   color: var(--ink);
   line-height: 1.1;
   max-width: 480px;
 }
 .hero h1 span {
   color: var(--accent);
 }
 .hero-desc {
   max-width: 300px;
   font-size: 14px;
   color: var(--ink-soft);
   line-height: 1.7;
   font-weight: 300;
 }
 /* Stat bar */
 .stats {
   background: var(--accent);
   display: flex;
   gap: 0;
   overflow: hidden;
 }
 .stat {
   flex: 1;
   padding: 18px 28px;
   border-right: 1px solid rgba(255,255,255,0.1);
   text-align: center;
 }
 .stat:last-child { border-right: none; }
 .stat-num {
   font-family: var(--font-display);
   font-size: 28px;
   font-weight: 700;
   color: #fff;
   display: block;
 }
 .stat-label {
   font-size: 11px;
   color: rgba(255,255,255,0.5);
   font-weight: 400;
   letter-spacing: 0.5px;
   text-transform: uppercase;
 }
 /* Main layout */
 main {
   padding: 40px 48px;
   max-width: 1200px;
   margin: 0 auto;
 }
 .section-header {
   display: flex;
   align-items: baseline;
   gap: 16px;
   margin-bottom: 24px;
 }
 .section-title {
   font-family: var(--font-display);
   font-size: 22px;
   font-weight: 700;
   color: var(--ink);
 }
 .section-line {
   flex: 1;
   height: 1px;
   background: var(--line);
 }
 /* Module grid */
 .modules {
   display: grid;
   grid-template-columns: repeat(3, 1fr);
   gap: 20px;
   margin-bottom: 48px;
 }
 .module-card {
   background: var(--surface);
   border-radius: var(--radius);
   border: 1px solid var(--line);
   overflow: hidden;
   cursor: pointer;
   transition: transform 0.2s ease, box-shadow 0.2s ease;
   position: relative;
 }
 .module-card:hover {
   transform: translateY(-3px);
   box-shadow: 0 12px 32px rgba(0,0,0,0.08);
 }
 .module-card.active {
   border-color: transparent;
   box-shadow: 0 0 0 2px var(--accent), 0 12px 32px rgba(0,0,0,0.1);
 }
 .module-header {
   padding: 22px 24px 16px;
   display: flex;
   align-items: center;
   gap: 14px;
 }
 .module-icon {
   width: 42px;
   height: 42px;
   border-radius: 10px;
   display: flex;
   align-items: center;
   justify-content: center;
   font-size: 20px;
   flex-shrink: 0;
 }
 .module-name {
   font-family: var(--font-display);
   font-size: 18px;
   font-weight: 700;
   line-height: 1.2;
 }
 .module-sub {
   font-size: 12px;
   font-weight: 400;
   margin-top: 2px;
 }
 .module-body {
   padding: 0 24px 20px;
 }
 .module-desc {
   font-size: 13px;
   color: var(--ink-soft);
   line-height: 1.6;
   font-weight: 300;
   margin-bottom: 14px;
 }
 .module-features {
   list-style: none;
   display: flex;
   flex-direction: column;
   gap: 6px;
 }
 .module-features li {
   font-size: 12px;
   color: var(--ink-soft);
   display: flex;
   align-items: center;
   gap: 8px;
   font-weight: 400;
 }
 .module-features li::before {
   content: '';
   width: 4px;
   height: 4px;
   border-radius: 50%;
   background: var(--ink-muted);
   flex-shrink: 0;
 }
 .module-footer {
   padding: 12px 24px;
   border-top: 1px solid var(--line);
   display: flex;
   align-items: center;
   justify-content: space-between;
 }
 .badge {
   font-size: 10px;
   font-weight: 500;
   letter-spacing: 0.5px;
   text-transform: uppercase;
   padding: 3px 10px;
   border-radius: 20px;
 }
 .btn-link {
   font-size: 12px;
   font-weight: 500;
   color: var(--accent);
   background: none;
   border: none;
   cursor: pointer;
   padding: 0;
   display: flex;
   align-items: center;
   gap: 4px;
   transition: gap 0.15s;
 }
 .btn-link:hover { gap: 8px; }
 /* Color variants */
 .mod-acervo .module-icon  { background: var(--teal-bg); }
 .mod-acervo .module-name  { color: var(--teal); }
 .mod-acervo .module-sub   { color: var(--accent-light); }
 .mod-acervo .badge        { background: var(--teal-bg); color: var(--teal); }
 .mod-usuarios .module-icon { background: var(--blue-bg); }
 .mod-usuarios .module-name { color: var(--blue); }
 .mod-usuarios .module-sub  { color: #3A6AB5; }
 .mod-usuarios .badge       { background: var(--blue-bg); color: var(--blue); }
 .mod-emprestimos .module-icon { background: var(--amber-bg); }
 .mod-emprestimos .module-name { color: var(--amber); }
 .mod-emprestimos .module-sub  { color: #A07030; }
 .mod-emprestimos .badge       { background: var(--amber-bg); color: var(--amber); }
 .mod-relatorios .module-icon { background: var(--green-bg); }
 .mod-relatorios .module-name { color: var(--green); }
 .mod-relatorios .module-sub  { color: #4A7A28; }
 .mod-relatorios .badge       { background: var(--green-bg); color: var(--green); }
 .mod-admin .module-icon { background: var(--coral-bg); }
 .mod-admin .module-name { color: var(--coral); }
 .mod-admin .module-sub  { color: #A04A36; }
 .mod-admin .badge       { background: var(--coral-bg); color: var(--coral); }
 .mod-busca .module-icon { background: var(--purple-bg); }
 .mod-busca .module-name { color: var(--purple); }
 .mod-busca .module-sub  { color: #5C529A; }
 .mod-busca .badge       { background: var(--purple-bg); color: var(--purple); }
 /* Flow diagram strip */
 .flow-section {
   background: var(--surface);
   border: 1px solid var(--line);
   border-radius: var(--radius);
   padding: 32px 36px;
   margin-bottom: 48px;
 }
 .flow-title {
   font-family: var(--font-display);
   font-size: 16px;
   font-weight: 700;
   color: var(--ink);
   margin-bottom: 28px;
 }
 .flow-steps {
   display: flex;
   align-items: center;
   gap: 0;
   overflow-x: auto;
   padding-bottom: 4px;
 }
 .flow-step {
   display: flex;
   flex-direction: column;
   align-items: center;
   gap: 10px;
   min-width: 110px;
   text-align: center;
   position: relative;
 }
 .flow-circle {
   width: 52px;
   height: 52px;
   border-radius: 50%;
   display: flex;
   align-items: center;
   justify-content: center;
   font-size: 20px;
   font-weight: 700;
   font-family: var(--font-display);
   border: 2px solid currentColor;
   background: var(--surface);
   z-index: 1;
 }
  
 .flow-step-name {
   font-size: 12px;
   font-weight: 500;
   color: var(--ink-soft);
   line-height: 1.3;
 }
 .flow-arrow {
   flex: 1;
   height: 2px;
   background: var(--line);
   position: relative;
   top: -18px;
   min-width: 24px;
 }
 .flow-arrow::after {
   content: '';
   position: absolute;
   right: -1px;
   top: -4px;
   width: 0;
   height: 0;
   border-top: 5px solid transparent;
   border-bottom: 5px solid transparent;
   border-left: 8px solid var(--line);
 }
 /* Bottom grid */
 .bottom-grid {
   display: grid;
   grid-template-columns: 2fr 1fr;
   gap: 20px;
 }
 .info-card {
   background: var(--surface);
   border: 1px solid var(--line);
   border-radius: var(--radius);
   padding: 28px 32px;
 }
 .info-card-title {
   font-family: var(--font-display);
   font-size: 16px;
   font-weight: 700;
   color: var(--ink);
   margin-bottom: 18px;
   padding-bottom: 14px;
   border-bottom: 1px solid var(--line);
 }
 .tech-list {
   display: flex;
   flex-direction: column;
   gap: 10px;
 }
 .tech-row {
   display: flex;
   align-items: center;
   justify-content: space-between;
   font-size: 13px;
 }
 .tech-name { color: var(--ink-soft); font-weight: 400; }
 .tech-pill {
   background: var(--warm);
   color: var(--accent);
   font-size: 11px;
   font-weight: 500;
   padding: 3px 10px;
   border-radius: 20px;
 }
 .tip-list {
   display: flex;
   flex-direction: column;
   gap: 12px;
 }
 .tip {
   display: flex;
   gap: 12px;
   align-items: flex-start;
 }
 .tip-num {
   width: 22px;
   height: 22px;
   border-radius: 50%;
   background: var(--accent);
   color: #fff;
   font-size: 11px;
   font-weight: 500;
   display: flex;
   align-items: center;
   justify-content: center;
   flex-shrink: 0;
   margin-top: 1px;
 }
 .tip-text { font-size: 13px; color: var(--ink-soft); line-height: 1.5; font-weight: 300; }
 /* Footer */
 footer {
   margin-top: 48px;
   border-top: 1px solid var(--line);
   padding: 24px 48px;
   display: flex;
   justify-content: space-between;
   align-items: center;
   background: var(--surface);
   font-size: 12px;
   color: var(--ink-muted);
 }
 /* Animations */
 .module-card {
   animation: fadeUp 0.4s ease both;
 }
 .module-card:nth-child(1) { animation-delay: 0.05s; }
 .module-card:nth-child(2) { animation-delay: 0.10s; }
 .module-card:nth-child(3) { animation-delay: 0.15s; }
 .module-card:nth-child(4) { animation-delay: 0.20s; }
 .module-card:nth-child(5) { animation-delay: 0.25s; }
 .module-card:nth-child(6) { animation-delay: 0.30s; }
 @keyframes fadeUp {
   from { opacity: 0; transform: translateY(16px); }
   to   { opacity: 1; transform: translateY(0); }
 }
 @media (max-width: 900px) {
   header { padding: 20px 24px; }
   .hero  { padding: 28px 24px; flex-direction: column; align-items: flex-start; }
   main   { padding: 28px 24px; }
   .modules { grid-template-columns: 1fr 1fr; }
   .bottom-grid { grid-template-columns: 1fr; }
   .hero h1 { font-size: 30px; }
 }
 @media (max-width: 600px) {
   .modules { grid-template-columns: 1fr; }
   .stats   { flex-wrap: wrap; }
 }