:root {
    --bg: #f6f8fc;
    --surface: #ffffff;
    --surface-2: #f8fafc;
    --primary: #16438B;
    --primary-2: #F7A400;
    --danger: #dc2626;
    --warning: #d97706;
    --info: #2563eb;
    --muted: #64748b;
    --text: #0f172a;
    --border: #dbe3ea;
    --shadow: 0 20px 60px rgba(15, 23, 42, .08);
    --radius: 18px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    min-height: 100vh;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--text);
}

a { color: inherit; text-decoration: none; }

.app-shell {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 280px;
    background: #123A7C;
    color: #fff;
    padding: 24px;
    display: flex;
    flex-direction: column;
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 50;
}

.brand {
    display: flex;
    gap: 12px;
    align-items: center;
    padding-bottom: 22px;
    border-bottom: 1px solid rgba(255,255,255,.14);
}

.brand-icon {
    width: 44px;
    height: 44px;
    border-radius: 15px;
    background: rgba(255,255,255,.13);
    display: grid;
    place-items: center;
    font-size: 22px;
}

.brand strong { display: block; font-size: 18px; }
.brand span { color: rgba(255,255,255,.70); font-size: 12px; }

.nav-menu {
    margin-top: 28px;
    display: grid;
    gap: 9px;
}

.nav-menu a {
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    min-height: 46px;
    padding: 12px 14px;
    border-radius: 14px;
    color: rgba(255,255,255,.86);
    font-weight: 700;
    border: 1px solid transparent;
    transition: .2s ease;
}

.nav-menu a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    bottom: 10px;
    width: 4px;
    border-radius: 0 999px 999px 0;
    background: #F7A400;
    transform: scaleY(0);
    transform-origin: center;
    transition: transform .22s ease;
}

.nav-menu a:hover {
    background: rgba(255,255,255,.12);
    color: #fff;
    transform: translateX(4px);
}

.nav-menu a:hover::before,
.nav-menu a.active::before {
    transform: scaleY(1);
}

.nav-menu a.active {
    background: rgba(247, 164, 0, .16);
    border-color: rgba(247, 164, 0, .26);
    color: #fff;
}

.sidebar-footer { margin-top: auto; }

.main-content {
    flex: 1;
    margin-left: 280px;
    padding: 28px;
}

.main-auth {
    margin-left: 0;
    display: grid;
    place-items: center;
    padding: 22px;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.topbar h1 { margin: 0; font-size: clamp(24px, 3vw, 34px); }
.topbar p { margin: 5px 0 0; color: var(--muted); }

.topbar-user {
    background: var(--surface);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    padding: 12px 16px;
    border-radius: 16px;
    min-width: 160px;
}

.topbar-user span { display: block; font-weight: 800; }
.topbar-user small { color: var(--muted); text-transform: uppercase; }

.menu-toggle {
    display: none;
    border: 0;
    background: var(--primary);
    color: #fff;
    border-radius: 12px;
    width: 42px;
    height: 42px;
    font-size: 20px;
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    border-radius: var(--radius);
    padding: 22px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-bottom: 18px;
}

.card-header h2, .card-header h3 { margin: 0; }
.card-header p { margin: 4px 0 0; color: var(--muted); }

.grid {
    display: grid;
    gap: 18px;
}

.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    border-radius: var(--radius);
    padding: 20px;
    position: relative;
    overflow: hidden;
}

.stat-card::after {
    content: '';
    width: 96px;
    height: 96px;
    position: absolute;
    right: -28px;
    top: -28px;
    border-radius: 50%;
    background: rgba(247, 164, 0, .14);
}

.stat-card span { color: var(--muted); font-weight: 700; }
.stat-card strong { display: block; font-size: 34px; margin-top: 10px; }

.table-wrapper { overflow-x: auto; border-radius: 16px; border: 1px solid var(--border); }
.table { width: 100%; border-collapse: collapse; background: var(--surface); }
.table th, .table td { padding: 13px 14px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
.table th { background: var(--surface-2); color: #334155; font-size: 13px; text-transform: uppercase; letter-spacing: .03em; }
.table tr:last-child td { border-bottom: 0; }

.actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

.btn, button.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 0;
    border-radius: 13px;
    padding: 11px 15px;
    font-weight: 800;
    cursor: pointer;
    transition: .2s ease;
    font-size: 14px;
}

.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-success { background: var(--primary-2); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-warning { background: var(--warning); color: #fff; }
.btn-info { background: var(--info); color: #fff; }
.btn-light { background: rgba(255,255,255,.14); color: #fff; }
.btn-muted { background: #e2e8f0; color: #0f172a; }
.btn-full { width: 100%; }
.btn-sm { padding: 8px 10px; border-radius: 10px; font-size: 12px; }

.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.form-group { display: grid; gap: 7px; }
.form-group.full { grid-column: 1 / -1; }
label { font-weight: 800; color: #334155; }
input, select, textarea {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 13px;
    padding: 12px 13px;
    font: inherit;
    color: var(--text);
    background: #fff;
    outline: none;
}
input:focus, select:focus, textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(22, 67, 139, .12); }
textarea { min-height: 110px; resize: vertical; }

.alert {
    padding: 14px 16px;
    border-radius: 15px;
    margin-bottom: 18px;
    font-weight: 700;
    border: 1px solid transparent;
}
.alert-success { background: #dcfce7; border-color: #86efac; color: #166534; }
.alert-danger { background: #fee2e2; border-color: #fecaca; color: #991b1b; }
.alert-warning { background: #fef3c7; border-color: #fde68a; color: #92400e; }
.alert-info { background: #dbeafe; border-color: #bfdbfe; color: #1d4ed8; }

.badge {
    display: inline-flex;
    border-radius: 999px;
    padding: 5px 10px;
    font-size: 12px;
    font-weight: 900;
    background: #e2e8f0;
    color: #334155;
}
.badge-disponivel, .badge-ativo, .badge-devolvido { background: #dcfce7; color: #166534; }
.badge-emprestado { background: #dbeafe; color: #1d4ed8; }
.badge-atrasado { background: #fee2e2; color: #991b1b; }
.badge-manutencao, .badge-cancelado { background: #fef3c7; color: #92400e; }
.badge-baixado, .badge-inativo { background: #e2e8f0; color: #475569; }

.auth-card {
    width: min(100%, 460px);
    background: var(--surface);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    border-radius: 28px;
    padding: 30px;
}

.auth-logo {
    width: 68px;
    height: 68px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, var(--primary), var(--primary-2));
    color: #fff;
    font-size: 32px;
    border-radius: 22px;
    margin-bottom: 18px;
}

.auth-card h1 { margin: 0 0 6px; }
.auth-card p { margin: 0 0 20px; color: var(--muted); }

.filter-bar {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 18px;
}
.filter-bar input, .filter-bar select { max-width: 260px; }

.pagination { display: flex; gap: 8px; margin-top: 18px; flex-wrap: wrap; }
.page-link { padding: 9px 13px; border-radius: 11px; background: #fff; border: 1px solid var(--border); font-weight: 800; }
.page-link.active { background: var(--primary); color: #fff; border-color: var(--primary); }

.timeline { display: grid; gap: 14px; }
.timeline-item { border-left: 4px solid var(--primary-2); padding: 12px 16px; background: var(--surface-2); border-radius: 0 14px 14px 0; }
.timeline-item strong { display: block; }
.timeline-item small { color: var(--muted); }

.mt-0 { margin-top: 0; }
.mt-2 { margin-top: 16px; }
.mb-0 { margin-bottom: 0; }
.text-muted { color: var(--muted); }
.text-right { text-align: right; }

@media (max-width: 1100px) {
    .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 820px) {
    .sidebar {
        transform: translateX(-105%);
        transition: .25s ease;
    }
    .sidebar.open { transform: translateX(0); }
    .main-content { margin-left: 0; padding: 18px; }
    .menu-toggle { display: inline-grid; place-items: center; }
    .topbar { align-items: flex-start; }
    .topbar-user { display: none; }
    .grid-2, .grid-3, .grid-4, .form-grid { grid-template-columns: 1fr; }
    .filter-bar input, .filter-bar select { max-width: none; }
    .card-header { align-items: flex-start; flex-direction: column; }
}