@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  --bg: #ffffff;
  --surface: #f9f9f9;
  --surface2: #f0f0f0;
  --surface3: #e8e8e8;
  --border: #e0e0e0;
  --border-dark: #cccccc;
  --text: #0a0a0a;
  --text-secondary: #555555;
  --text-muted: #999999;
  --black: #000000;
  --white: #ffffff;
  --success: #1a7a3c;
  --danger: #b91c1c;
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 14px;
  --shadow-sm: 0 1px 4px rgba(0,0,0,0.08);
  --shadow: 0 2px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--black); text-decoration: none; }
a:hover { color: var(--text-secondary); }

/* ── Auth pages ── */
.auth-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--white);
  padding: 20px;
}

.auth-card {
  background: var(--black);
  border: 1px solid #222;
  border-radius: var(--radius-lg);
  padding: 44px 40px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 8px 48px rgba(0,0,0,0.4);
}

.auth-logo {
  text-align: center;
  margin-bottom: 32px;
  padding-bottom: 28px;
  border-bottom: 1px solid #222;
}

.auth-logo img {
  max-width: 200px;
  max-height: 70px;
  object-fit: contain;
  display: block;
  margin: 0 auto;
}

.auth-logo h1 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: 1px;
}

.auth-logo p {
  color: rgba(255,255,255,0.35);
  font-size: 0.78rem;
  margin-top: 6px;
  letter-spacing: 0.3px;
}

.auth-divider {
  display: none;
}

/* ── Form ── */
.form-group { margin-bottom: 16px; }

.form-group label {
  display: block;
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 7px;
  text-transform: uppercase;
  letter-spacing: 0.7px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 11px 14px;
  font-size: 0.93rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--black);
  box-shadow: 0 0 0 3px rgba(0,0,0,0.06);
}

.form-group input::placeholder { color: var(--text-muted); }
.form-group select option { background: var(--white); color: var(--text); }
.form-group textarea { resize: vertical; }

/* Auth card dark inputs */
.auth-card .form-group label { color: rgba(255,255,255,0.45); }
.auth-card .form-group input {
  background: #111;
  border-color: #2a2a2a;
  color: var(--white);
}
.auth-card .form-group input::placeholder { color: #555; }
.auth-card .form-group input:focus {
  border-color: #555;
  box-shadow: 0 0 0 3px rgba(255,255,255,0.05);
}
.auth-card .btn-primary {
  background: var(--white);
  color: var(--black);
  border-color: var(--white);
}
.auth-card .btn-primary:hover {
  background: #e8e8e8;
  border-color: #e8e8e8;
  color: var(--black);
  box-shadow: 0 4px 14px rgba(255,255,255,0.15);
}
.auth-card .auth-footer { color: rgba(255,255,255,0.4); }
.auth-card .auth-footer a { color: var(--white); border-color: rgba(255,255,255,0.4); }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.87rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: all 0.15s;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--black);
  color: var(--white);
  border-color: var(--black);
}
.btn-primary:hover {
  background: #222;
  color: var(--white);
  border-color: #222;
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(0,0,0,0.2);
}

.btn-full { width: 100%; font-size: 0.95rem; padding: 13px; }

.btn-sm { padding: 7px 13px; font-size: 0.8rem; border-radius: 5px; }

.btn-danger {
  background: #fff0f0;
  color: var(--danger);
  border-color: #fecaca;
}
.btn-danger:hover { background: #fecaca; }

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border);
}
.btn-ghost:hover {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border-dark);
}

.btn-success {
  background: #f0faf4;
  color: var(--success);
  border-color: #bbf7d0;
}
.btn-success:hover { background: #bbf7d0; }

/* ── Alerts ── */
.alert {
  padding: 11px 15px;
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  font-size: 0.87rem;
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid;
}
.alert-error { background: #fff0f0; border-color: #fecaca; color: var(--danger); }
.alert-success { background: #f0faf4; border-color: #bbf7d0; color: var(--success); }

.auth-footer {
  text-align: center;
  margin-top: 22px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}
.auth-footer a { color: var(--black); font-weight: 600; border-bottom: 1px solid var(--black); }

/* ── Navbar ── */
.navbar {
  background: var(--black);
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar-logo {
  display: flex;
  align-items: center;
}

.navbar-logo img {
  height: 36px;
  object-fit: contain;
  filter: brightness(0) invert(1);
}

.navbar-logo-text {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: 1px;
}

.navbar-right {
  display: flex;
  align-items: center;
  gap: 24px;
}

.navbar-user {
  font-size: 0.83rem;
  color: rgba(255,255,255,0.6);
  display: flex;
  align-items: center;
  gap: 8px;
}
.navbar-user-dot {
  width: 6px; height: 6px;
  background: #4ade80;
  border-radius: 50%;
}

.navbar-link {
  font-size: 0.83rem;
  color: rgba(255,255,255,0.65);
  transition: color 0.15s;
}
.navbar-link:hover { color: var(--white); }

.navbar-logout {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.4);
  transition: color 0.15s;
}
.navbar-logout:hover { color: #fca5a5; }

.navbar-admin-badge {
  font-size: 0.7rem;
  font-weight: 600;
  background: rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.7);
  padding: 3px 9px;
  border-radius: 20px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

/* ── Container ── */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 36px 28px;
}

/* ── Page header ── */
.page-header { margin-bottom: 32px; }
.page-title { font-size: 1.4rem; font-weight: 800; margin-bottom: 4px; color: var(--black); }
.page-subtitle { color: var(--text-secondary); font-size: 0.87rem; }

/* ── Modules grid ── */
.modules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 14px;
}

.module-card {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: var(--text);
  transition: all 0.2s;
  display: block;
  position: relative;
  overflow: hidden;
}

.module-card:hover {
  border-color: var(--border-dark);
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
  color: var(--text);
}

/* Imagem de capa */
.module-card-cover {
  width: 100%;
  height: 160px;
  overflow: hidden;
  background: var(--surface2);
  position: relative;
}

.module-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s;
}
.module-card:hover .module-card-cover img { transform: scale(1.04); }

.module-card-cover--empty {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  opacity: 0.3;
}

/* Corpo do card */
.module-card-body {
  padding: 18px 20px 20px;
}

.module-card-name {
  font-weight: 700;
  font-size: 0.97rem;
  margin-bottom: 6px;
  line-height: 1.3;
  color: var(--black);
}

.module-card-desc {
  color: var(--text-secondary);
  font-size: 0.82rem;
  line-height: 1.5;
  margin-bottom: 16px;
}

.module-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.module-card-count {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 600;
  background: var(--surface2);
  padding: 3px 10px;
  border-radius: 20px;
  border: 1px solid var(--border);
}

.module-card-arrow {
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: transform 0.2s;
}
.module-card:hover .module-card-arrow { transform: translateX(4px); color: var(--black); }
.dashboard-page .module-card:hover .module-card-arrow { color: #ffffff !important; }

/* Cabeçalho da página de manual */
.manual-header {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 28px;
}

.manual-header-cover {
  width: 80px;
  height: 80px;
  border-radius: var(--radius);
  overflow: hidden;
  flex-shrink: 0;
  border: 1.5px solid var(--border);
}

.manual-header-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ── Back link ── */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-bottom: 24px;
  transition: color 0.15s;
}
.back-link:hover { color: var(--black); }

/* ── Materials list ── */
.materials-list { display: flex; flex-direction: column; gap: 8px; }

.material-item {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: var(--text);
  transition: all 0.15s;
}
.material-item:hover {
  border-color: var(--black);
  box-shadow: var(--shadow-sm);
  transform: translateX(2px);
  color: var(--text);
}

.material-icon {
  width: 38px; height: 38px;
  background: var(--surface2);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

.material-info { flex: 1; min-width: 0; }
.material-title { font-weight: 600; font-size: 0.9rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.material-date { font-size: 0.75rem; color: var(--text-muted); margin-top: 2px; }

.material-arrow { color: var(--text-muted); font-size: 0.9rem; flex-shrink: 0; }

/* ── PDF Viewer ── */
.viewer-layout {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

.viewer-nav {
  background: var(--black);
  padding: 0 20px;
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-shrink: 0;
}

.viewer-back {
  color: rgba(255,255,255,0.6);
  font-size: 0.85rem;
  flex-shrink: 0;
  transition: color 0.15s;
}
.viewer-back:hover { color: var(--white); }

.viewer-title {
  font-size: 0.9rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
  text-align: center;
  color: rgba(255,255,255,0.75);
}

.viewer-brand {
  font-size: 0.75rem;
  font-weight: 700;
  color: rgba(255,255,255,0.35);
  flex-shrink: 0;
  letter-spacing: 1px;
}

.viewer-frame {
  flex: 1;
  border: none;
  width: 100%;
  background: #e0e0e0;
}

/* ── Admin ── */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
  margin-bottom: 32px;
}

.stat-card {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.stat-value { font-size: 2rem; font-weight: 800; color: var(--black); line-height: 1; }
.stat-label { font-size: 0.76rem; color: var(--text-muted); margin-top: 6px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.4px; }

.admin-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
@media (max-width: 768px) { .admin-grid { grid-template-columns: 1fr; } }

.card {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.card-title {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.9px;
  color: var(--text-muted);
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}

.admin-module-item {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.admin-module-name { font-weight: 600; font-size: 0.86rem; }
.admin-module-count { font-size: 0.74rem; color: var(--text-muted); margin-top: 1px; }

.divider { height: 1px; background: var(--border); margin: 20px 0; }

/* ── Table ── */
.users-table { width: 100%; border-collapse: collapse; font-size: 0.87rem; }
.users-table th {
  text-align: left; padding: 10px 14px;
  color: var(--text-muted); font-size: 0.7rem;
  text-transform: uppercase; letter-spacing: 0.8px; font-weight: 700;
  border-bottom: 1.5px solid var(--border);
}
.users-table td { padding: 13px 14px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.users-table tr:last-child td { border-bottom: none; }
.users-table tr:hover td { background: var(--surface); }

/* ── Misc ── */
.empty-state { text-align: center; padding: 52px 24px; color: var(--text-muted); }
.empty-state-icon { font-size: 2rem; margin-bottom: 12px; opacity: 0.3; }
.empty-state-text { font-size: 0.88rem; }

input[type="file"] {
  background: var(--surface);
  border: 1.5px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  width: 100%;
  color: var(--text-secondary);
  font-size: 0.85rem;
  cursor: pointer;
  transition: border-color 0.15s;
}
input[type="file"]:hover { border-color: var(--black); }