:root {
    --bg: #f5f7fb;
    --card: #ffffff;
    --card-2: #eef2f7;
    --text: #111827;
    --muted: #6b7280;
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --danger: #b91c1c;
    --danger-hover: #991b1b;
    --warning: #d97706;
    --warning-hover: #b45309;
    --success: #15803d;
    --success-hover: #166534;
    --border: #dbe2ea;
    --shadow: 0 10px 35px rgba(15, 23, 42, 0.08);
    --table-head: #e5edf6;
    --table-row: #ffffff;
    --table-row-alt: #f8fafc;
}

body.dark {
    --bg: #0f172a;
    --card: #111827;
    --card-2: #1f2937;
    --text: #f3f4f6;
    --muted: #9ca3af;
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --danger: #dc2626;
    --danger-hover: #b91c1c;
    --warning: #f59e0b;
    --warning-hover: #d97706;
    --success: #22c55e;
    --success-hover: #16a34a;
    --border: #334155;
    --shadow: 0 10px 35px rgba(0, 0, 0, 0.35);
    --table-head: #1e293b;
    --table-row: #111827;
    --table-row-alt: #172033;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Inter, Segoe UI, Arial, sans-serif;
    background: linear-gradient(135deg, var(--bg), var(--card-2));
    color: var(--text);
}

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

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

/* SIDEBAR */
.sidebar {
    width: 280px;
    background: linear-gradient(180deg, var(--card), var(--card-2));
    border-right: 1px solid var(--border);
    box-shadow: var(--shadow);
    padding: 24px 18px;
    position: sticky;
    top: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--text);
    padding: 8px 6px 18px;
    border-bottom: 1px solid var(--border);
}

.brand-icon {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), #60a5fa);
    color: white;
    box-shadow: 0 10px 20px rgba(37, 99, 235, 0.22);
}

.brand-icon svg {
    display: block;
}

.user-box {
    padding: 16px;
    border-radius: 18px;
    background: rgba(255,255,255,0.45);
    border: 1px solid var(--border);
    margin-bottom: 2px;
    font-size: 14px;
    color: var(--muted);
    backdrop-filter: blur(8px);
}

body.dark .user-box {
    background: rgba(255,255,255,0.03);
}

.user-box strong {
    display: block;
    font-size: 15px;
    color: var(--text);
    margin-bottom: 4px;
}

.nav-section-title {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--muted);
    margin: 6px 8px 2px;
    font-weight: 700;
}

.nav-links {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    border: 1px solid transparent;
    width: 100%;
    text-align: left;
    background: transparent;
    color: var(--text);
    padding: 13px 14px;
    border-radius: 16px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all .22s ease;
}

.nav-item:hover {
    background: var(--card-2);
    border-color: var(--border);
    transform: translateX(2px);
}

.nav-item.active {
    background: linear-gradient(135deg, var(--primary), #3b82f6);
    color: white;
    box-shadow: 0 12px 24px rgba(37, 99, 235, 0.22);
}

.nav-icon {
    width: 18px;
    min-width: 18px;
    height: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.nav-icon svg {
    display: block;
}

.nav-footer {
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding-top: 10px;
    border-top: 1px solid var(--border);
}

.nav-action {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 1px solid var(--border);
    background: var(--card-2);
    color: var(--text);
    padding: 12px 14px;
    border-radius: 14px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: all .2s ease;
}

.nav-action:hover {
    transform: translateY(-1px);
}

.nav-action.logout {
    background: linear-gradient(135deg, var(--danger), #ef4444);
    color: white;
    border-color: transparent;
}

.nav-action svg {
    display: block;
}

/* MAIN */
.main {
    flex: 1;
    padding: 28px;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 22px;
}

.page-title {
    font-size: 28px;
    font-weight: 800;
    margin: 0;
}

.subtitle {
    margin: 6px 0 0;
    color: var(--muted);
    font-size: 14px;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    border-radius: 22px;
    padding: 20px;
    margin-bottom: 18px;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.stat {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 18px;
    box-shadow: var(--shadow);
}

.stat .label {
    color: var(--muted);
    font-size: 13px;
    margin-bottom: 6px;
}

.stat .value {
    font-size: 28px;
    font-weight: 800;
}

form .row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
    margin-bottom: 14px;
}

form .row-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin-bottom: 14px;
}

label {
    display: block;
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 8px;
}

input, select, textarea {
    width: 100%;
    border: 1px solid var(--border);
    background: var(--card-2);
    color: var(--text);
    border-radius: 14px;
    padding: 12px 14px;
    font-size: 14px;
    outline: none;
}

textarea {
    min-height: 110px;
    resize: vertical;
}

input:focus, select:focus, textarea:focus {
    border-color: var(--primary);
}

/* BOTÕES */
.btn {
    border: none;
    padding: 12px 18px;
    border-radius: 14px;
    cursor: pointer;
    font-weight: 700;
    transition: .2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }

.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: var(--success-hover); }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: var(--danger-hover); }

.btn-warning { background: var(--warning); color: #fff; }
.btn-warning:hover { background: var(--warning-hover); }

.btn-muted {
    background: var(--card-2);
    color: var(--text);
    border: 1px solid var(--border);
}

/* TABELAS */
.table-wrap {
    overflow: auto;
    border-radius: 18px;
    border: 1px solid var(--border);
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 900px;
}

thead th {
    background: var(--table-head);
    padding: 14px;
    text-align: center;
    font-size: 13px;
    white-space: nowrap;
}

tbody td {
    padding: 13px 12px;
    border-top: 1px solid var(--border);
    text-align: center;
    background: var(--table-row);
    font-size: 14px;
}

tbody tr:nth-child(even) td {
    background: var(--table-row-alt);
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
}

.badge-ok {
    background: rgba(34, 197, 94, 0.15);
    color: #22c55e;
}

.badge-bad {
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
}

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

.actions form {
    margin: 0;
}

.actions .btn {
    min-width: 88px;
}

.table-wrap table td form {
    display: inline-block;
}

/* ACESSÓRIOS */
.acessorios-lista {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 14px 16px;
    background: var(--card-2);
    border: 1px solid var(--border);
    border-radius: 16px;
    margin-top: 6px;
}

.check-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--text);
    cursor: pointer;
    line-height: 1.3;
    margin-bottom: 0;
}

.check-item input[type="checkbox"] {
    width: 16px;
    height: 16px;
    margin: 0;
    accent-color: var(--primary);
    cursor: pointer;
}

.check-item span {
    display: inline-block;
}

/* LOGIN */
.login-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 20px;
}

.login-box {
    width: 100%;
    max-width: 460px;
    background: var(--card);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    border-radius: 28px;
    padding: 32px;
}

.login-box h1 {
    margin: 0 0 8px;
    font-size: 30px;
}

.login-box p {
    color: var(--muted);
    margin-bottom: 24px;
}

/* ALERTAS */
.alert {
    padding: 14px 16px;
    border-radius: 14px;
    margin-bottom: 16px;
    font-size: 14px;
}

.alert-success {
    background: rgba(34, 197, 94, 0.12);
    color: #16a34a;
}

.alert-danger {
    background: rgba(239, 68, 68, 0.12);
    color: #dc2626;
}

/* TOPO TEMA */
.theme-toggle {
    background: var(--card-2);
    border: 1px solid var(--border);
    padding: 10px 14px;
    border-radius: 12px;
    cursor: pointer;
    color: var(--text);
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.theme-toggle svg {
    display: block;
}

/* RESPONSIVO */
@media (max-width: 1100px) {
    .stats,
    .grid-2,
    .grid-3,
    form .row,
    form .row-3 {
        grid-template-columns: 1fr;
    }

    .layout {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
        border-right: none;
        border-bottom: 1px solid var(--border);
    }

    .nav-footer {
        margin-top: 8px;
    }

    table {
        min-width: 700px;
    }
}