:root {
    --color-black: #0b0b0c;
    --color-gold: #b8963f;
    --color-white: #ffffff;
    --color-gray: #6b6b6b;
    --color-error-bg: #2a1414;
    --color-error-text: #f2c4c4;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Georgia', 'Times New Roman', serif;
    background: var(--color-black);
    color: var(--color-white);
}

.page-center {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.card {
    max-width: 420px;
    width: 100%;
    background: #141416;
    border: 1px solid var(--color-gold);
    border-radius: 4px;
    padding: 40px 32px;
    text-align: center;
}

.brand {
    letter-spacing: 2px;
    font-size: 12px;
    color: var(--color-gold);
    text-transform: uppercase;
    margin-bottom: 16px;
}

h1 {
    margin: 0 0 12px;
    font-weight: 400;
    font-size: 28px;
    color: var(--color-white);
}

p {
    color: #d8d8d8;
    line-height: 1.5;
}

a {
    color: var(--color-gold);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.form {
    display: flex;
    flex-direction: column;
    text-align: left;
    margin-top: 24px;
}

.form label {
    font-size: 13px;
    color: var(--color-gray);
    margin: 12px 0 4px;
}

.form input {
    background: var(--color-black);
    border: 1px solid #333;
    color: var(--color-white);
    padding: 10px 12px;
    border-radius: 3px;
    font-family: inherit;
}

.form input:focus {
    outline: none;
    border-color: var(--color-gold);
}

.form button,
.link-button {
    margin-top: 20px;
    background: var(--color-gold);
    color: var(--color-black);
    border: none;
    padding: 12px;
    border-radius: 3px;
    font-weight: bold;
    cursor: pointer;
    font-family: inherit;
}

.form button:hover,
.link-button:hover {
    opacity: 0.9;
}

.alert {
    background: var(--color-error-bg);
    color: var(--color-error-text);
    padding: 10px 12px;
    border-radius: 3px;
    font-size: 14px;
}

.alert-success {
    background: #14261b;
    color: #b7e4c7;
}

.muted-link {
    margin-top: 16px;
    font-size: 13px;
}

.muted-link a {
    color: var(--color-gray);
}

.recovery-codes {
    list-style: none;
    padding: 0;
    margin: 16px 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    font-family: 'Courier New', monospace;
}

.recovery-codes li {
    background: var(--color-black);
    border: 1px solid #333;
    padding: 8px;
    border-radius: 3px;
    text-align: center;
}

.qr-code-wrapper {
    background: #ffffff;
    border-radius: 4px;
    padding: 16px;
    margin: 16px 0;
    display: flex;
    justify-content: center;
}

.qr-code-wrapper svg {
    max-width: 220px;
    width: 100%;
    height: auto;
}

.qr-placeholder {
    background: var(--color-black);
    border: 1px dashed var(--color-gold);
    padding: 16px;
    border-radius: 3px;
    font-size: 12px;
    word-break: break-all;
    color: var(--color-gray);
    text-align: left;
}

.secret-code {
    font-family: 'Courier New', monospace;
    font-size: 18px;
    letter-spacing: 2px;
    color: var(--color-gold);
    margin: 12px 0;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 32px;
    border-bottom: 1px solid #222;
}

.topbar .link-button {
    margin-top: 0;
    background: transparent;
    color: var(--color-gold);
    border: 1px solid var(--color-gold);
    padding: 8px 16px;
}

.content {
    padding: 40px;
}

/* ==========================================================================
   Painel administrativo — layout, menu, cards, acessibilidade
   ========================================================================== */

:focus-visible {
    outline: 3px solid var(--color-gold);
    outline-offset: 2px;
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    background: var(--color-gold);
    color: var(--color-black);
    padding: 10px 16px;
    z-index: 1000;
    font-weight: bold;
    border-radius: 0 0 4px 0;
}

.skip-link:focus {
    left: 0;
}

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

.menu-toggle-input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.app-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 20px;
    background: #141416;
    border-bottom: 1px solid var(--color-gold);
    position: sticky;
    top: 0;
    z-index: 20;
}

.menu-toggle-label {
    display: none;
    cursor: pointer;
    font-size: 22px;
    color: var(--color-gold);
    padding: 4px 8px;
    border-radius: 3px;
}

.menu-toggle-label:focus-visible {
    outline: 3px solid var(--color-gold);
}

.app-header-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-placeholder {
    width: 40px;
    height: 40px;
    border: 1px solid var(--color-gold);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    letter-spacing: 1px;
    color: var(--color-gold);
    flex-shrink: 0;
}

.app-logo {
    width: 40px;
    height: 40px;
    border-radius: 4px;
    border: 1px solid var(--color-gold);
    object-fit: contain;
    background: #0b0b0c;
    flex-shrink: 0;
}

@media (max-width: 560px) {
    .app-logo,
    .logo-placeholder {
        width: 32px;
        height: 32px;
    }
}

.app-header-title {
    font-size: 15px;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--color-white);
}

.app-header-user {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    color: #ccc;
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--color-gold);
    color: var(--color-black);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 13px;
    letter-spacing: 0;
    flex-shrink: 0;
}

.user-avatar-lg {
    width: 56px;
    height: 56px;
    font-size: 22px;
}

.account-profile-card {
    display: flex;
    align-items: center;
    gap: 16px;
    max-width: 480px;
}

.account-profile-name {
    font-size: 17px;
    color: var(--color-white);
    margin: 0 0 4px;
}

.account-profile-email {
    font-size: 13px;
    color: #999;
    margin: 0;
}

.app-body {
    display: flex;
    flex: 1;
    min-height: 0;
}

.app-sidebar {
    width: 260px;
    flex-shrink: 0;
    background: #101011;
    border-right: 1px solid #222;
    padding: 16px 0;
}

.app-menu {
    list-style: none;
    margin: 0;
    padding: 0;
}

.app-menu-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    color: #ddd;
    text-decoration: none;
    font-size: 14px;
    border-left: 3px solid transparent;
}

.app-menu-icon {
    flex-shrink: 0;
    width: 20px;
    text-align: center;
    font-size: 15px;
}

.app-menu-label {
    min-width: 0;
}

.app-menu-link:hover {
    background: #1a1a1c;
    color: var(--color-white);
}

.app-menu-link.is-active {
    border-left-color: var(--color-gold);
    color: var(--color-gold);
    background: #1a1a1c;
    font-weight: bold;
}

.app-overlay {
    display: none;
}

.app-content {
    flex: 1;
    padding: 24px 32px 48px;
    min-width: 0;
}

.page-title {
    font-weight: 400;
    font-size: 26px;
    margin: 0 0 20px;
    color: var(--color-white);
}

.page-subtitle {
    color: #aaa;
    margin-top: -12px;
    margin-bottom: 24px;
    font-size: 14px;
}

/* -- Cards do dashboard -------------------------------------------------- */

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 32px;
}

.stat-card {
    background: #141416;
    border: 1px solid #262626;
    border-left: 3px solid var(--color-gold);
    border-radius: 4px;
    padding: 18px 20px;
}

.stat-card-label {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #999;
    margin: 0 0 8px;
}

.stat-card-value {
    font-size: 28px;
    color: var(--color-white);
    margin: 0;
    font-weight: 400;
}

.stat-card-meta {
    font-size: 12px;
    color: #888;
    margin: 6px 0 0;
}

.status-pill {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: bold;
}

.status-pill.status-ok,
.status-pill.status-green { background: #14261b; color: #b7e4c7; }
.status-pill.status-error,
.status-pill.status-red { background: var(--color-error-bg); color: var(--color-error-text); }
.status-pill.status-not_configured,
.status-pill.status-configured,
.status-pill.status-warning,
.status-pill.status-yellow { background: #2a230f; color: #e4c88c; }

/* -- Atalhos -------------------------------------------------------------- */

.shortcut-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 12px;
    margin-bottom: 32px;
}

.shortcut-button {
    display: block;
    width: 100%;
    background: #141416;
    border: 1px solid #333;
    color: var(--color-white);
    padding: 14px 16px;
    border-radius: 4px;
    text-align: left;
    font-family: inherit;
    font-size: 14px;
    cursor: pointer;
    text-decoration: none;
}

.shortcut-button:hover {
    border-color: var(--color-gold);
    color: var(--color-gold);
}

.shortcut-button[disabled],
.shortcut-button.is-disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.shortcut-button[disabled]:hover,
.shortcut-button.is-disabled:hover {
    border-color: #333;
    color: var(--color-white);
}

/* -- Tabelas de dados ------------------------------------------------------ */

.data-table {
    width: 100%;
    border-collapse: collapse;
    background: #141416;
    border: 1px solid #262626;
    border-radius: 4px;
    overflow: hidden;
    font-size: 14px;
}

.data-table caption {
    text-align: left;
    padding: 12px 16px;
    color: #aaa;
    font-size: 13px;
}

.data-table th,
.data-table td {
    padding: 10px 16px;
    text-align: left;
    border-bottom: 1px solid #222;
}

.data-table th {
    color: var(--color-gold);
    font-weight: normal;
    text-transform: uppercase;
    font-size: 11px;
    letter-spacing: 0.5px;
}

.data-table tbody tr:hover {
    background: #1a1a1c;
}

.empty-state {
    padding: 32px;
    text-align: center;
    color: #888;
    background: #141416;
    border: 1px dashed #333;
    border-radius: 4px;
}

.settings-form {
    display: grid;
    gap: 12px;
    max-width: 640px;
}

.settings-row {
    display: flex;
    gap: 8px;
    align-items: center;
}

.settings-row input[type="text"] {
    flex: 1;
    background: var(--color-black);
    border: 1px solid #333;
    color: var(--color-white);
    padding: 8px 10px;
    border-radius: 3px;
    font-family: inherit;
}

.badge-inline {
    font-size: 12px;
    padding: 2px 8px;
    border-radius: 10px;
    background: #1a1a1c;
    border: 1px solid #333;
    color: #ccc;
}

/* -- Estado de carregamento (progressivo, sem JS obrigatório) -------------- */

.loading-hint {
    font-size: 13px;
    color: #888;
    font-style: italic;
}

/* -- Responsivo ------------------------------------------------------------ */

@media (max-width: 900px) {
    .menu-toggle-label {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .app-sidebar {
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        transform: translateX(-100%);
        transition: transform 0.2s ease;
        z-index: 40;
        width: 260px;
        box-shadow: 2px 0 12px rgba(0, 0, 0, 0.5);
    }

    .menu-toggle-input:checked ~ .app-body .app-sidebar {
        transform: translateX(0);
    }

    .menu-toggle-input:checked ~ .app-body .app-overlay {
        display: block;
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.6);
        z-index: 30;
        cursor: pointer;
    }

    .app-content {
        padding: 20px 16px 40px;
    }

    .app-header-title {
        display: none;
    }
}

@media (max-width: 560px) {
    .app-header-user .user-name {
        display: none;
    }

    .card-grid,
    .shortcut-grid {
        grid-template-columns: 1fr;
    }

    .data-table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }
}

.sr-only-heading {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.form-input {
    background: var(--color-black);
    border: 1px solid #333;
    color: var(--color-white);
    padding: 8px 10px;
    border-radius: 3px;
    font-family: inherit;
}

.form-input:focus {
    outline: none;
    border-color: var(--color-gold);
}

.btn-sm {
    background: transparent;
    border: 1px solid #444;
    color: #ccc;
    padding: 4px 10px;
    border-radius: 3px;
    font-size: 12px;
    cursor: pointer;
    font-family: inherit;
}

.btn-sm:hover {
    border-color: var(--color-gold);
    color: var(--color-gold);
}

/* -- Prompt 13: PWA (instalação / atualização) ----------------------------- */

.pwa-banner {
    position: fixed;
    left: 16px;
    right: 16px;
    bottom: 16px;
    z-index: 500;
    max-width: 480px;
    margin: 0 auto;
    background: #141416;
    border: 1px solid var(--color-gold);
    border-radius: 8px;
    padding: 14px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 4px 18px rgba(0, 0, 0, 0.5);
}

.pwa-banner[hidden] {
    display: none;
}

.pwa-banner p {
    margin: 0;
    color: var(--color-white);
    font-size: 14px;
    line-height: 1.4;
    flex: 1;
}

.pwa-banner-actions {
    display: flex;
    gap: 8px;
    flex-shrink: 0;
}

.pwa-banner .btn-gold {
    background: var(--color-gold);
    color: var(--color-black);
    border: none;
    border-radius: 4px;
    padding: 8px 14px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
}

.pwa-banner .btn-dismiss {
    background: transparent;
    border: 1px solid #444;
    color: var(--color-gray);
    border-radius: 4px;
    padding: 8px 12px;
    font-size: 13px;
    cursor: pointer;
    font-family: inherit;
}

.pwa-banner .btn-dismiss:hover {
    color: var(--color-white);
    border-color: var(--color-gold);
}

@media (max-width: 560px) {
    .pwa-banner {
        flex-direction: column;
        align-items: stretch;
        text-align: left;
    }

    .pwa-banner-actions {
        justify-content: flex-end;
    }
}

/* -- Prompt 13: Notificações e dispositivos -------------------------------- */

.device-card {
    background: #141416;
    border: 1px solid #262626;
    border-left: 3px solid var(--color-gold);
    border-radius: 4px;
    padding: 12px 14px;
    margin-bottom: 10px;
}

.device-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.device-card-meta {
    color: var(--color-gray);
    font-size: 13px;
    margin-top: 4px;
}

.device-card-actions {
    display: flex;
    gap: 8px;
    margin-top: 8px;
    flex-wrap: wrap;
}

.notification-severity {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 6px;
}

.notification-severity.critica { background: #e05252; }
.notification-severity.atencao { background: var(--color-gold); }
.notification-severity.informativa { background: #6b6b6b; }