/* =============================================================================
   main.css · GB Plataforma — Design System Base
   ============================================================================= */

:root {
  --color-primary:       #1B3A6B;
  --color-primary-light: #2D5DA8;
  --color-accent:        #E8A020;
  --color-danger:        #C0392B;
  --color-danger-light:  #F8D7DA;
  --color-success:       #27AE60;
  --color-success-light: #D4EDDA;
  --color-warning:       #F39C12;
  --color-warning-light: #FFF3CD;
  --color-info:          #2980B9;
  --color-info-light:    #D1ECF1;
  --color-bg:            #F4F6F9;
  --color-surface:       #FFFFFF;
  --color-text:          #2C3E50;
  --color-text-muted:    #7F8C8D;
  --color-border:        #DDE1E7;
  --sidebar-width:       240px;
  --header-height:       64px;
  --radius:              8px;
  --radius-sm:           4px;
  --shadow-sm:           0 1px 3px rgba(0,0,0,.08);
  --shadow-md:           0 4px 12px rgba(0,0,0,.12);
  --transition:          .18s ease;
  --font:                'Inter', 'Segoe UI', Arial, sans-serif;
}

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

html { font-size: 16px; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  min-height: 100vh;
  overflow-x: hidden;
}

img, svg, canvas, video, iframe { max-width: 100%; }

/* ---------- Typography ---------- */
h1 { font-size: 1.5rem;  font-weight: 700; }
h2 { font-size: 1.25rem; font-weight: 600; }
h3 { font-size: 1rem;    font-weight: 600; }
h4 { font-size: .875rem; font-weight: 600; }

a { color: var(--color-primary-light); text-decoration: none; }
a:hover { text-decoration: underline; }

p { margin-bottom: .75rem; }
p:last-child { margin-bottom: 0; }

small { font-size: .8125rem; color: var(--color-text-muted); }

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 3px; }

/* ---------- Focus ---------- */
:focus-visible {
  outline: 2px solid var(--color-primary-light);
  outline-offset: 2px;
}

/* ---------- Utils ---------- */
.text-muted    { color: var(--color-text-muted); }
.text-danger   { color: var(--color-danger); }
.text-success  { color: var(--color-success); }
.text-warning  { color: var(--color-warning); }
.text-primary  { color: var(--color-primary); }
.text-center   { text-align: center; }
.text-right    { text-align: right; }
.fw-bold       { font-weight: 700; }
.fw-semibold   { font-weight: 600; }
.fs-sm         { font-size: .8125rem; }
.fs-xs         { font-size: .75rem; }
.d-flex        { display: flex; }
.align-center  { align-items: center; }
.gap-sm        { gap: .5rem; }
.gap-md        { gap: 1rem; }
.gap-lg        { gap: 1.5rem; }
.mt-sm         { margin-top: .5rem; }
.mt-md         { margin-top: 1rem; }
.mt-lg         { margin-top: 1.5rem; }
.mb-sm         { margin-bottom: .5rem; }
.mb-md         { margin-bottom: 1rem; }
.mb-lg         { margin-bottom: 1.5rem; }
.ml-auto       { margin-left: auto; }
.w-100         { width: 100%; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); border: 0;
}

/* ---------- Forms ---------- */
.form-group { margin-bottom: 1.75rem; }
.form-group:last-child { margin-bottom: 0; }
.form-group label {
  display: block;
  font-size: .9rem;
  font-weight: 600;
  margin-bottom: .6rem;
  color: var(--color-text);
}
.form-group label .required { color: var(--color-danger); margin-left: 2px; }

.form-control,
input[type="text"],
input[type="email"],
input[type="date"],
input[type="time"],
input[type="number"],
input[type="tel"],
input[type="search"],
select,
textarea {
  display: block;
  width: 100%;
  padding: .75rem 1rem;
  font-size: .95rem;
  font-family: inherit;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  transition: border-color var(--transition), box-shadow var(--transition);
  appearance: none;
}
.form-control:focus,
input:focus,
select:focus,
textarea:focus {
  border-color: var(--color-primary-light);
  box-shadow: 0 0 0 4px rgba(45,93,168,.12);
  outline: none;
}
.form-control.is-invalid,
input.is-invalid,
select.is-invalid { border-color: var(--color-danger); }

textarea { resize: vertical; min-height: 100px; }
select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%237F8C8D' d='M6 8L1 3h10z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right .75rem center; padding-right: 2.25rem; }

.form-error {
  display: block;
  font-size: .8125rem;
  color: var(--color-danger);
  margin-top: .4rem;
}

/* Form Row Grid */
.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-bottom: 1.75rem;
}
.form-row > * { margin-bottom: 0; }

@media (max-width: 768px) {
  .form-row { grid-template-columns: 1fr; gap: 1rem; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .65rem 1.25rem;
  font-size: .95rem;
  font-family: inherit;
  font-weight: 600;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(0,0,0,.12); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-sm  { padding: .4rem .9rem; font-size: .85rem; }
.btn-lg  { padding: .85rem 1.75rem; font-size: 1rem; }

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.btn-primary:hover:not(:disabled) { background: var(--color-primary-light); border-color: var(--color-primary-light); }

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-secondary:hover:not(:disabled) { background: var(--color-bg); }

.btn-danger {
  background: var(--color-danger);
  color: #fff;
  border-color: var(--color-danger);
}
.btn-danger:hover:not(:disabled) { background: #a93226; border-color: #a93226; }

.btn-ghost {
  background: transparent;
  color: var(--color-primary-light);
  border-color: transparent;
}
.btn-ghost:hover:not(:disabled) { background: rgba(45,93,168,.08); }

.btn-accent {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}
.btn-accent:hover:not(:disabled) { background: #cf8e1a; }

.btn-icon {
  padding: .4rem;
  border-radius: var(--radius-sm);
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  color: var(--color-text-muted);
  transition: color var(--transition), background var(--transition);
}
.btn-icon:hover { color: var(--color-text); background: var(--color-bg); }

/* ---------- Badges ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: .25rem;
  padding: .2rem .55rem;
  font-size: .75rem;
  font-weight: 600;
  border-radius: 999px;
  white-space: nowrap;
}
.badge-success  { background: var(--color-success-light); color: #1a7a44; }
.badge-danger   { background: var(--color-danger-light);  color: #8c2020; }
.badge-warning  { background: var(--color-warning-light); color: #8a6400; }
.badge-info     { background: var(--color-info-light);    color: #1a5f80; }
.badge-muted    { background: var(--color-bg);            color: var(--color-text-muted); border: 1px solid var(--color-border); }
.badge-primary  { background: #dce7f7;                    color: var(--color-primary); }
.badge-accent   { background: #fef3e0;                    color: #8a5a00; }

/* ---------- Cards ---------- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  margin-bottom: 2rem;
  transition: box-shadow var(--transition), transform var(--transition);
}
.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.card-header {
  padding: 1.5rem 1.75rem;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: linear-gradient(135deg, rgba(27,58,107,.02) 0%, rgba(45,93,168,.02) 100%);
  border-bottom: 2px solid var(--color-border);
}
.card-header h2, .card-header h3 { margin: 0; font-size: 1.1rem; }
.card-body { padding: 2rem 2.25rem; }
.card-body > *:last-child { margin-bottom: 0; }
.card-footer {
  padding: 1.25rem 2.25rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 1rem;
  background: var(--color-bg);
}

/* ---------- Tables ---------- */
.table-responsive { overflow-x: auto; margin-bottom: 1.5rem; }
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: .9rem;
}
.table th {
  text-align: left;
  padding: 1rem 1.5rem;
  font-size: .8rem;
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: .04em;
  border-bottom: 2px solid var(--color-border);
  white-space: nowrap;
  background: rgba(244,246,249,.5);
}
.table td {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
}
.table tbody tr:last-child td { border-bottom: none; }
.table tbody tr:nth-child(even) { background: rgba(244,246,249,.3); }
.table tbody tr:hover { background: rgba(45,93,168,.06); }
.table-actions { display: flex; gap: .5rem; }

/* ---------- Painel Grid (métricas) ---------- */
.painel-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-bottom: 2rem;
}
@media (max-width: 1024px) { .painel-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px)  { .painel-grid { grid-template-columns: 1fr; } }

.painel-grid.cols-6 { grid-template-columns: repeat(6, 1fr); }
@media (max-width: 1200px) { .painel-grid.cols-6 { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 640px)  { .painel-grid.cols-6 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 400px)  { .painel-grid.cols-6 { grid-template-columns: 1fr; } }

.metric-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem 2.25rem;
  display: flex;
  flex-direction: column;
  gap: .5rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}
.metric-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.metric-card .metric-label  { font-size: .8rem; color: var(--color-text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: .03em; }
.metric-card .metric-value  { font-size: 2.25rem; font-weight: 700; line-height: 1.1; }
.metric-card .metric-sub    { font-size: .85rem; color: var(--color-text-muted); margin-top: .25rem; }
.metric-card.ok    { border-left: 4px solid var(--color-success); }
.metric-card.warn  { border-left: 4px solid var(--color-warning); }
.metric-card.crit  { border-left: 4px solid var(--color-danger); }
.metric-card.info  { border-left: 4px solid var(--color-info); }

/* ---------- Alert Banner ---------- */
.alert-banner {
  position: fixed;
  top: var(--header-height);
  left: var(--sidebar-width);
  right: 0;
  z-index: 900;
  padding: .75rem 1.25rem;
  display: flex;
  align-items: center;
  gap: .75rem;
  font-size: .9rem;
  font-weight: 500;
  color: #fff;
}
.alert-banner.danger  { background: var(--color-danger); animation: pulseBanner 2s infinite; }
.alert-banner.warning { background: var(--color-warning); }
.alert-banner.info    { background: var(--color-info); }
.alert-banner.hidden  { display: none; }

@keyframes pulseBanner {
  0%, 100% { opacity: 1; }
  50% { opacity: .85; }
}

/* ---------- Empty State ---------- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 2rem;
  text-align: center;
  color: var(--color-text-muted);
  gap: 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin: 2rem 0;
}
.empty-state svg { width: 56px; height: 56px; opacity: .3; }
.empty-state p   { font-size: .95rem; margin: 0; }
.empty-state h3  { font-size: 1.1rem; color: var(--color-text); margin: 0; }

/* ---------- Pagination ---------- */
.pagination {
  display: flex;
  align-items: center;
  gap: .25rem;
  margin-top: 1rem;
  justify-content: center;
}
.pagination button {
  padding: .35rem .65rem;
  font-size: .875rem;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--color-text);
  transition: background var(--transition);
}
.pagination button:hover:not(:disabled) { background: var(--color-bg); }
.pagination button.active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.pagination button:disabled { opacity: .4; cursor: not-allowed; }

/* ---------- Loading spinner ---------- */
.spinner {
  width: 20px; height: 20px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin .6s linear infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Date picker ---------- */
.date-nav {
  display: flex;
  align-items: center;
  gap: .5rem;
}
.date-nav input[type="date"] { width: auto; }

/* ---------- Responsive tweaks (small screens) ---------- */
@media (max-width: 600px) {
  .table th, .table td { padding: .75rem 1rem; }
}

@media (max-width: 480px) {
  .metric-card { padding: 1.25rem 1.25rem; }
  .metric-card .metric-value { font-size: 1.75rem; }
  .btn { padding: .6rem 1rem; }
}

/* ---------- Print ---------- */
@media print {
  .sidebar, .app-header, .btn, .pagination { display: none !important; }
  .main-content { margin: 0 !important; padding: 0 !important; }
}