/* TechProt Web - Modern Engineering CAD Stylesheet */
:root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --border-color: #334155;
    --accent-color: #38bdf8;
    --accent-hover: #0284c7;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --success-color: #22c55e;
    --input-bg: #0f172a;
    --modal-bg: #1e293b;
    --toolbar-bg: rgba(30, 41, 59, 0.9);
    --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
}

[data-theme="light"] {
    --bg-primary: #f8f9fa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e2e8f0;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --border-color: #cbd5e1;
    --accent-color: #0284c7;
    --accent-hover: #0369a1;
    --danger-color: #dc2626;
    --warning-color: #d97706;
    --success-color: #16a34a;
    --input-bg: #ffffff;
    --modal-bg: #ffffff;
    --toolbar-bg: rgba(255, 255, 255, 0.9);
    --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    overflow: hidden;
    height: 100vh;
    height: 100dvh;
    display: flex;
    flex-direction: column;
}

/* Top Navigation Bar */
.main-nav {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    height: 44px;
    max-width: 100vw;
    overflow: hidden;
    z-index: 100;
    user-select: none;
}

.menu-bar-container {
    display: flex;
    align-items: center;
    height: 100%;
    max-width: 100%;
    overflow: hidden;
    padding: 0 12px;
    gap: 8px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 700;
    font-size: 15px;
    margin-right: 12px;
}

.brand-logo {
    color: #f59e0b;
    font-size: 18px;
}

.brand-badge {
    background: var(--accent-color);
    color: #fff;
    font-size: 10px;
    font-weight: 800;
    padding: 2px 5px;
    border-radius: 4px;
    text-transform: uppercase;
}

.menu-items {
    display: flex;
    align-items: center;
    gap: 2px;
    min-width: 0;
}

.menu-dropdown {
    position: relative;
    display: inline-block;
}

.menu-btn {
    background: none;
    border: none;
    color: var(--text-primary);
    padding: 6px 10px;
    font-size: 13px;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.15s;
}

.menu-btn:hover {
    background: var(--bg-tertiary);
}

.dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--bg-secondary);
    min-width: 220px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 6px 0;
    z-index: 200;
}

/* Abertura por clique/toque (classe .open controlada pelo MenuBar.js) */
.menu-dropdown.open .dropdown-content {
    display: block;
}

/* Hover como conveniência adicional apenas em desktop (mouse) */
@media (hover: hover) and (pointer: fine) {
    .menu-dropdown:hover .dropdown-content {
        display: block;
    }
}

/* Hamburger (visível apenas em telas pequenas) */
.menu-hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    min-width: 44px;
    min-height: 44px;
    padding: 8px;
    background: none;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

.menu-hamburger:active {
    background: var(--bg-tertiary);
}

.hamburger-bar {
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
}

.menu-backdrop {
    display: none;
}

.dropdown-content a,
.dropdown-file-label {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
    padding: 8px 14px;
    text-decoration: none;
    font-size: 13px;
    cursor: pointer;
    transition: background 0.15s;
}

.dropdown-content a:hover,
.dropdown-file-label:hover {
    background-color: var(--bg-tertiary);
    color: var(--accent-color);
}

.menu-divider {
    height: 1px;
    background-color: var(--border-color);
    margin: 4px 0;
}

.menu-icon {
    font-size: 14px;
    width: 18px;
    text-align: center;
}

/* ============================================================
   Menu responsivo — mobile-first
   xs (<=480px), sm (481-768px) e md (769-1024px): colapsa em
   hamburger + gaveta lateral. A faixa md evita overflow da
   .main-nav (44px fixos, sem overflow) causado pela soma de
   brand + 7 menus dropdown + quick-actions (~900-950px).
   ============================================================ */

/* sm+md: ate 1024px — gaveta lateral com todos os menus */
@media (max-width: 1024px) {
    .main-nav {
        height: 48px;
    }

    .menu-bar-container {
        padding: 0 8px;
        gap: 4px;
    }

    .menu-hamburger {
        display: inline-flex;
    }

    .menu-backdrop.visible {
        display: block;
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 250;
    }

    .menu-items {
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        height: 100dvh;
        width: min(80vw, 20rem);
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        background: var(--bg-secondary);
        border-right: 1px solid var(--border-color);
        box-shadow: var(--shadow);
        padding: calc(8px + env(safe-area-inset-top, 0px)) 8px calc(8px + env(safe-area-inset-bottom, 0px));
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        transform: translateX(-110%);
        transition: transform 0.2s ease;
        z-index: 300;
    }

    .menu-items.mobile-open {
        transform: translateX(0);
    }

    .menu-dropdown {
        display: block;
        width: 100%;
    }

    .menu-btn {
        width: 100%;
        min-height: 44px;
        padding: 10px 14px;
        font-size: 15px;
        text-align: left;
    }

    /* Submenus expandem inline dentro da gaveta */
    .dropdown-content {
        position: static;
        min-width: 0;
        box-shadow: none;
        border: none;
        border-left: 2px solid var(--border-color);
        border-radius: 0;
        margin-left: 14px;
        padding: 2px 0;
    }

    .dropdown-content a,
    .dropdown-file-label {
        min-height: 44px;
        padding: 10px 16px;
        font-size: 15px;
    }

    /* Quick actions: alvos de toque >= 44px */
    .quick-actions {
        gap: 8px;
    }

    .quick-actions .btn {
        min-height: 44px;
        min-width: 44px;
        justify-content: center;
    }

    /* Botao principal: esconde o texto, mantem icone */
    #btnQuickPF span {
        display: none;
    }
}

/* xs: <= 480px — esconde botoes secundarios e o nome da marca */
@media (max-width: 480px) {
    .brand-name {
        display: none;
    }

    #btnQuickFlowAnim,
    #btnQuickReport,
    #btnQuickAlign,
    #btnQuickStability {
        display: none;
    }
}

/* Quick Actions in Navbar */
.quick-actions {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn {
    padding: 5px 12px;
    font-size: 13px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
    border: 1px solid transparent;
    transition: all 0.15s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn-action {
    background: var(--success-color);
    color: #ffffff;
    font-weight: 600;
}

.btn-action:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.btn-icon {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    padding: 5px 8px;
}

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

.btn-icon.active {
    background: var(--accent-color);
    color: #fff;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.35);
}

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

.btn-primary:hover {
    background: var(--accent-hover);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.btn-secondary:hover {
    filter: brightness(1.1);
}

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

/* ================= Tabbed Toolbar (Ribbon) ================= */
.tabbed-toolbar {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    user-select: none;
    display: flex;
    flex-direction: column;
    z-index: 80;
    flex-shrink: 0;
}

.ribbon-tabs-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 12px;
    background: rgba(0, 0, 0, 0.18);
    border-bottom: 1px solid var(--border-color);
    height: 30px;
}

.ribbon-tabs-list {
    display: flex;
    align-items: center;
    gap: 4px;
    height: 100%;
}

.ribbon-tab-btn {
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-secondary);
    padding: 0 14px;
    height: 100%;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.15s;
}

.ribbon-tab-btn:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.ribbon-tab-btn.active {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
    background: var(--bg-secondary);
}

.ribbon-tab-icon {
    font-size: 13px;
}

.ribbon-tabs-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

.ribbon-system-badge {
    font-size: 11px;
    color: var(--text-secondary);
    background: var(--input-bg);
    padding: 2px 8px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.ribbon-system-badge strong {
    color: var(--accent-color);
}

.ribbon-collapse-toggle {
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-secondary);
    font-size: 10px;
    cursor: pointer;
    padding: 3px 6px;
    border-radius: 4px;
    transition: all 0.15s;
}

.ribbon-collapse-toggle:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--border-color);
}

/* Ribbon Content Body */
.ribbon-content-body {
    display: flex;
    min-height: 74px;
    max-height: 78px;
    padding: 4px 10px;
    overflow-x: auto;
    overflow-y: hidden;
    background: var(--bg-secondary);
}

.ribbon-pane {
    display: flex;
    gap: 8px;
    align-items: stretch;
    height: 100%;
}

.ribbon-group {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    border-right: 1px solid var(--border-color);
    padding: 2px 8px;
    height: 100%;
    flex-shrink: 0;
}

.ribbon-group:last-child {
    border-right: none;
}

.ribbon-group-items {
    display: flex;
    align-items: center;
    gap: 4px;
    flex: 1;
}

.ribbon-group-title {
    font-size: 9px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    color: var(--text-secondary);
    text-align: center;
    margin-top: 2px;
    opacity: 0.75;
}

/* Ribbon Buttons */
.ribbon-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 5px;
    color: var(--text-primary);
    padding: 4px 8px;
    min-width: 48px;
    height: 48px;
    cursor: pointer;
    font-size: 11px;
    transition: all 0.15s;
    user-select: none;
    gap: 3px;
    text-decoration: none;
    box-sizing: border-box;
}

.ribbon-btn:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    transform: translateY(-1px);
}

.ribbon-btn.active {
    background: var(--accent-color) !important;
    color: #ffffff !important;
    border-color: var(--accent-hover) !important;
    box-shadow: 0 0 8px rgba(56, 189, 248, 0.4);
}

.ribbon-btn.active svg {
    filter: brightness(1.2);
}

.rbn-icon {
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 20px;
}

.rbn-label {
    font-size: 10px;
    font-weight: 500;
    white-space: nowrap;
    line-height: 1.1;
}

.rbn-btn-danger:hover {
    background: rgba(239, 68, 68, 0.2);
    border-color: var(--danger-color);
    color: var(--danger-color);
}

/* Hero simulation action buttons */
.rbn-btn-hero {
    flex-direction: row;
    gap: 8px;
    padding: 6px 12px;
    min-width: 120px;
    text-align: left;
    height: 48px;
    border-radius: 6px;
}

.rbn-icon-large {
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.rbn-hero-text {
    display: flex;
    flex-direction: column;
}

.rbn-hero-title {
    font-size: 11.5px;
    font-weight: 700;
    line-height: 1.2;
}

.rbn-hero-sub {
    font-size: 9px;
    opacity: 0.8;
}

.rbn-btn-powerflow {
    background: rgba(34, 197, 94, 0.15);
    border-color: rgba(34, 197, 94, 0.4);
    color: var(--text-primary);
}

.rbn-btn-powerflow .rbn-icon-large {
    color: #22c55e;
}

.rbn-btn-powerflow:hover {
    background: rgba(34, 197, 94, 0.28);
    border-color: #22c55e;
    box-shadow: 0 0 10px rgba(34, 197, 94, 0.3);
}

.rbn-btn-fault {
    background: rgba(245, 158, 11, 0.15);
    border-color: rgba(245, 158, 11, 0.4);
    color: var(--text-primary);
}

.rbn-btn-fault .rbn-icon-large {
    color: #f59e0b;
}

.rbn-btn-fault:hover {
    background: rgba(245, 158, 11, 0.28);
    border-color: #f59e0b;
    box-shadow: 0 0 10px rgba(245, 158, 11, 0.3);
}

.rbn-btn-stability {
    background: rgba(56, 189, 248, 0.15);
    border-color: rgba(56, 189, 248, 0.4);
    color: var(--text-primary);
}

.rbn-btn-stability .rbn-icon-large {
    color: #38bdf8;
}

.rbn-btn-stability:hover {
    background: rgba(56, 189, 248, 0.28);
    border-color: #38bdf8;
    box-shadow: 0 0 10px rgba(56, 189, 248, 0.3);
}

/* ============================================================
   Ribbon responsivo — TabbedToolbar (mobile-first)
   <=768px: tabs roláveis + corpo em carrossel com snap
   <=480px: refinamentos (badge compacto, grupos largos)
   Desktop >=1025px permanece idêntico (sem snap forçado).
   ============================================================ */

/* sm: 481-768px + xs: <=480px — comportamento base mobile do ribbon */
@media (max-width: 768px) {
    /* Barra de abas: carrossel horizontal, sem quebra, 44px de alvo */
    .ribbon-tabs-bar {
        height: 44px;
        min-height: 44px;
        padding-left: max(8px, env(safe-area-inset-left, 0px));
        padding-right: max(8px, env(safe-area-inset-right, 0px));
        gap: 8px;
        overflow-x: auto;
        overflow-y: hidden;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        -ms-overflow-style: none;
        scroll-snap-type: x proximity;
        flex-wrap: nowrap;
        justify-content: flex-start;
    }

    .ribbon-tabs-bar::-webkit-scrollbar {
        display: none;
    }

    .ribbon-tabs-list {
        flex: 0 0 auto;
        flex-wrap: nowrap;
        gap: 6px;
        height: 100%;
        overflow: visible;
    }

    .ribbon-tab-btn {
        flex: 0 0 auto;
        min-height: 44px;
        height: 44px;
        min-width: max-content;
        padding: 0 16px;
        font-size: 13px;
        white-space: nowrap;
        border-bottom-width: 3px;
    }

    .ribbon-tab-btn:active {
        background: var(--bg-tertiary);
        color: var(--text-primary);
    }

    .ribbon-tabs-right {
        flex: 0 0 auto;
        gap: 8px;
        padding-left: 8px;
        margin-left: auto;
    }

    .ribbon-system-badge {
        white-space: nowrap;
        font-size: 10px;
        padding: 3px 8px;
        flex: 0 0 auto;
    }

    .ribbon-collapse-toggle {
        min-width: 44px;
        min-height: 44px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        font-size: 14px;
        padding: 0 8px;
        flex: 0 0 auto;
        border-radius: 6px;
    }

    .ribbon-collapse-toggle:active {
        background: var(--bg-tertiary);
        color: var(--text-primary);
    }

    /* Corpo do ribbon: carrossel com snap por grupo + pista visual */
    .ribbon-content-body {
        min-height: 88px;
        max-height: none;
        height: auto;
        padding: 6px max(10px, env(safe-area-inset-right, 0px)) 8px max(10px, env(safe-area-inset-left, 0px));
        gap: 10px;
        overflow-x: auto;
        overflow-y: hidden;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        -ms-overflow-style: none;
        scroll-snap-type: x mandatory;
        scroll-padding-left: max(10px, env(safe-area-inset-left, 0px));
        scroll-padding-right: max(10px, env(safe-area-inset-right, 0px));
        /* fade sutil na borda direita indicando mais conteúdo — puro CSS */
        -webkit-mask-image: linear-gradient(to right, black calc(100% - 28px), transparent 100%);
        mask-image: linear-gradient(to right, black calc(100% - 28px), transparent 100%);
    }

    .ribbon-content-body::-webkit-scrollbar {
        display: none;
    }

    .ribbon-pane {
        gap: 10px;
        height: auto;
        align-items: stretch;
        flex: 0 0 auto;
    }

    .ribbon-group {
        scroll-snap-align: start;
        flex: 0 0 auto;
        padding: 4px 10px;
        gap: 4px;
        min-width: max-content;
    }

    .ribbon-group-items {
        gap: 8px;
        flex-wrap: nowrap;
    }

    .ribbon-btn {
        min-width: 44px;
        min-height: 44px;
        height: 48px;
        gap: 4px;
    }

    .ribbon-btn:active {
        transform: scale(0.97);
        filter: brightness(1.06);
        background: var(--bg-tertiary);
        border-color: var(--border-color);
    }

    /* Hero buttons: compactos em mobile, mantendo legibilidade */
    .rbn-btn-hero {
        min-width: 108px;
        padding: 6px 10px;
        gap: 8px;
    }

    .rbn-hero-title {
        font-size: 11px;
    }

    .rbn-hero-sub {
        font-size: 8.5px;
    }
}

/* xs: <=480px — refinamentos: badge compacto e grupo largo com snap confortável */
@media (max-width: 480px) {
    .ribbon-tabs-bar {
        gap: 6px;
    }

    .ribbon-tab-btn {
        padding: 0 12px;
        font-size: 12.5px;
    }

    /* Badge não pode competir com o toggle: encolhe com ellipsis */
    .ribbon-system-badge {
        max-width: 96px;
        overflow: hidden;
        text-overflow: ellipsis;
        font-size: 9.5px;
        padding: 3px 7px;
    }

    .ribbon-content-body {
        padding-top: 6px;
        padding-bottom: 6px;
        /* fade ligeiramente mais pronunciado em telas muito estreitas */
        -webkit-mask-image: linear-gradient(to right, black calc(100% - 22px), transparent 100%);
        mask-image: linear-gradient(to right, black calc(100% - 22px), transparent 100%);
    }

    /* Grupo com muitos botões (Inserir Elementos da Rede) ganha largura de carrossel */
    .ribbon-group-elements {
        min-width: min(85vw, 340px);
        max-width: min(85vw, 340px);
    }

    .ribbon-group-elements .ribbon-group-items {
        flex-wrap: nowrap;
        overflow-x: visible;
        gap: 6px;
    }

    /* Outros grupos mantêm max-content mas com limite para não exigir zoom */
    .ribbon-group {
        max-width: min(88vw, 360px);
    }

    .rbn-btn-hero {
        min-width: 96px;
        padding: 6px 8px;
    }

    .rbn-hero-title {
        font-size: 10.5px;
    }
}

/* CAD Canvas Container */
.workspace-container {
    flex: 1;
    position: relative;
    width: 100%;
    height: auto;
    min-height: 0;
    overflow: hidden;
}

#cadCanvas {
    width: 100%;
    height: 100%;
    display: block;
    touch-action: none;
}

/* Floating Elements Toolbar */
.floating-toolbar {
    position: absolute;
    right: 20px;
    top: 20px;
    background: var(--toolbar-bg);
    backdrop-filter: blur(8px);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    z-index: 50;
    user-select: none;
    width: 58px;
}

.floating-toolbar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 8px;
    border-bottom: 1px solid var(--border-color);
    cursor: grab;
    background: rgba(0, 0, 0, 0.1);
    border-top-left-radius: 8px;
    border-top-right-radius: 8px;
}

.toolbar-title {
    font-size: 10px;
    font-weight: 600;
    color: var(--text-secondary);
    display: none;
}

.drag-icon {
    color: var(--text-secondary);
    font-size: 14px;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
}

.close-btn:hover {
    color: var(--danger-color);
}

.floating-toolbar-tools {
    display: flex;
    flex-direction: column;
    padding: 6px;
    gap: 4px;
}

.tool-btn {
    background: none;
    border: none;
    color: var(--text-primary);
    width: 44px;
    height: 44px;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    transition: all 0.15s;
}

.tool-btn span {
    font-size: 9px;
    display: none;
}

.tool-btn:hover {
    background: var(--bg-tertiary);
    color: var(--accent-color);
    transform: scale(1.05);
}

.tool-btn.active {
    background: var(--accent-color);
    color: #fff;
    box-shadow: 0 0 10px var(--accent-color);
}

.tool-separator {
    height: 1px;
    background: var(--border-color);
    margin: 4px 2px;
}

/* Modals */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(3px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 500;
}

.modal-card {
    background: var(--modal-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: var(--shadow);
    width: 460px;
    max-width: 95vw;
    animation: modalPop 0.2s ease-out;
}

@keyframes modalPop {
    from { transform: scale(0.95); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 15px;
    font-weight: 600;
}

.modal-body {
    padding: 16px;
}

.modal-footer {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    border-top: 1px solid var(--border-color);
}

/* Forms */
.form-row {
    margin-bottom: 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.form-row-2col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 12px;
}

.form-control {
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 7px 10px;
    border-radius: 4px;
    font-size: 13px;
    outline: none;
    transition: border 0.15s;
}

.form-control:focus {
    border-color: var(--accent-color);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    cursor: pointer;
    user-select: none;
}

.fieldset-box {
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 10px 12px;
    margin-top: 10px;
    background: rgba(0, 0, 0, 0.05);
}

/* Tabs */
.tab-buttons {
    display: flex;
    gap: 4px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 10px;
}

.tab-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 6px 12px;
    font-size: 13px;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.15s;
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
    font-weight: 600;
}

/* Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 12px;
}

.data-table th, .data-table td {
    border: 1px solid var(--border-color);
    padding: 6px 10px;
    text-align: left;
}

.data-table th {
    background: var(--bg-tertiary);
    font-weight: 600;
}

.data-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.05);
}

/* Badges */
.badge {
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
}

.badge-warning {
    background: #f59e0b;
    color: #000;
}

.badge-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

/* Context Menu */
.context-menu {
    position: absolute;
    display: none;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    border-radius: 6px;
    padding: 4px 0;
    min-width: 180px;
    z-index: 300;
}

.context-item {
    padding: 7px 14px;
    font-size: 13px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background 0.15s;
}

.context-item:hover {
    background: var(--bg-tertiary);
    color: var(--accent-color);
}

.context-divider {
    height: 1px;
    background: var(--border-color);
    margin: 4px 0;
}

.text-danger {
    color: var(--danger-color);
}

/* Toasts */
.toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 1000;
    pointer-events: none;
}

.toast {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    padding: 10px 16px;
    border-radius: 6px;
    font-size: 13px;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.25s ease-out;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

.toast-success {
    border-left: 4px solid var(--success-color);
}

.toast-error {
    border-left: 4px solid var(--danger-color);
}

.toast-info {
    border-left: 4px solid var(--accent-color);
}

.font-bold { font-weight: 700; }
.text-accent { color: var(--accent-color); }

/* Stability Modal Tabs and Pills */
.stab-tab-btn {
    background: none;
    border: none;
    padding: 8px 16px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 2px solid transparent;
    cursor: pointer;
    transition: all 0.15s;
}

.stab-tab-btn:hover {
    color: var(--text-primary);
}

.stab-tab-btn.active {
    color: var(--accent-color);
    border-bottom: 2px solid var(--accent-color);
}

.btn-var-pill {
    background: none;
    border: none;
    padding: 4px 10px;
    font-size: 11px;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.15s;
}

.btn-var-pill:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.btn-var-pill.active {
    background: var(--accent-color);
    color: #fff;
    font-weight: 600;
}

/* Control Diagram Block CAD Editor */
.btn-palette {
    transition: all 0.15s ease;
    user-select: none;
}

.btn-palette:hover {
    background: var(--bg-tertiary) !important;
    border-color: var(--accent-color) !important;
    color: var(--accent-color) !important;
    transform: translateX(2px);
}

/* ============================================================
   Label Manager Dialog — Redesign moderno (2026)
   Card com radius generoso, sombras suaves, busca instantânea,
   grupos colapsáveis, checkboxes customizados e mobile-first.
   ============================================================ */

.lm-backdrop {
    padding: 16px;
}

.lm-card {
    width: 640px;
    max-width: 100%;
    max-height: min(90dvh, 720px);
    display: flex;
    flex-direction: column;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 24px 48px -12px rgba(0, 0, 0, 0.55), 0 4px 12px -4px rgba(0, 0, 0, 0.4);
}

.lm-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    padding: 18px 20px 14px;
    border-bottom: 1px solid var(--border-color);
}

.lm-header-text h3 {
    font-size: 16px;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.lm-subtitle {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 3px;
}

.lm-close {
    flex: 0 0 auto;
    width: 44px;
    height: 44px;
    margin: -6px -8px 0 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    border-radius: 10px;
    color: var(--text-secondary);
    font-size: 16px;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}

.lm-close:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
}

.lm-close:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* --- Search + precision row --- */
.lm-search-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
}

.lm-search-wrap {
    position: relative;
    flex: 1 1 220px;
    display: flex;
    align-items: center;
}

.lm-search-icon {
    position: absolute;
    left: 12px;
    color: var(--text-secondary);
    font-size: 15px;
    pointer-events: none;
}

.lm-search {
    width: 100%;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 16px; /* evita zoom automático no iOS */
    padding: 10px 12px 10px 36px;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.lm-search:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.22);
}

.lm-precision {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--text-secondary);
    white-space: nowrap;
}

.lm-precision input {
    width: 64px;
    min-height: 44px;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 16px;
    padding: 8px 10px;
    text-align: center;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.lm-precision input:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.22);
}

/* --- Body: list + preview --- */
.lm-body {
    display: flex;
    gap: 16px;
    padding: 14px 20px;
    overflow: hidden;
    flex: 1 1 auto;
    min-height: 0;
}

.lm-list {
    flex: 1 1 58%;
    overflow-y: auto;
    min-height: 0;
    padding-right: 4px;
}

.lm-group {
    margin-bottom: 6px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.02);
}

.lm-group-header {
    width: 100%;
    min-height: 44px;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.03);
    border: none;
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    text-align: left;
    transition: background 0.15s;
}

.lm-group-header:hover {
    background: rgba(255, 255, 255, 0.06);
}

.lm-group-header:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: -2px;
}

.lm-group-icon {
    color: var(--accent-color);
    font-size: 14px;
}

.lm-group-title {
    flex: 1 1 auto;
}

.lm-group-count {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    border-radius: 999px;
    padding: 2px 8px;
    transition: background 0.15s, color 0.15s;
}

.lm-group-count.has-active {
    background: rgba(56, 189, 248, 0.18);
    color: var(--accent-color);
}

.lm-group-chevron {
    color: var(--text-secondary);
    font-size: 11px;
    transition: transform 0.2s ease;
}

.lm-group-header[aria-expanded="false"] .lm-group-chevron {
    transform: rotate(-90deg);
}

.lm-group-body {
    padding: 6px 8px 10px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.lm-group-body.collapsed {
    display: none;
}

.lm-empty {
    padding: 24px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 13px;
}

/* --- Checkbox rows (custom) --- */
.lm-item {
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 44px;
    padding: 8px 10px;
    border-radius: 8px;
    font-size: 13px;
    cursor: pointer;
    user-select: none;
    transition: background 0.12s;
}

.lm-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.lm-item input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    width: 1px;
    height: 1px;
}

.lm-check {
    flex: 0 0 auto;
    width: 20px;
    height: 20px;
    border: 1.5px solid var(--border-color);
    border-radius: 6px;
    background: var(--input-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s, border-color 0.15s, box-shadow 0.15s;
}

.lm-check::after {
    content: '✓';
    font-size: 12px;
    font-weight: 700;
    color: #fff;
    opacity: 0;
    transform: scale(0.6);
    transition: opacity 0.12s, transform 0.12s;
}

.lm-item input:checked + .lm-check {
    background: var(--accent-color);
    border-color: var(--accent-color);
}

.lm-item input:checked + .lm-check::after {
    opacity: 1;
    transform: scale(1);
}

.lm-item input:focus-visible + .lm-check {
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.35);
}

.lm-item-text {
    flex: 1 1 auto;
}

.lm-item-warn .lm-item-text { color: var(--warning-color); }
.lm-item-warn input:checked + .lm-check {
    background: var(--warning-color);
    border-color: var(--warning-color);
}

.lm-item-danger .lm-item-text { color: var(--danger-color); }
.lm-item-danger input:checked + .lm-check {
    background: var(--danger-color);
    border-color: var(--danger-color);
}

/* --- Preview panel --- */
.lm-preview-panel {
    flex: 1 1 42%;
    display: flex;
    flex-direction: column;
    min-width: 0;
    min-height: 0;
}

.lm-preview-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 8px;
}

.lm-preview-box {
    flex: 1 1 auto;
    overflow-y: auto;
    min-height: 0;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.lm-preview-block {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
}

.lm-preview-group {
    width: 100%;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.lm-chip {
    font-family: 'JetBrains Mono', Consolas, monospace;
    font-size: 11px;
    color: var(--text-primary);
    background: rgba(56, 189, 248, 0.12);
    border: 1px solid rgba(56, 189, 248, 0.25);
    border-radius: 6px;
    padding: 3px 8px;
}

.lm-preview-empty {
    color: var(--text-secondary);
    font-size: 12px;
    font-style: italic;
}

/* --- Footer --- */
.lm-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 20px calc(12px + env(safe-area-inset-bottom, 0px));
    border-top: 1px solid var(--border-color);
    flex-wrap: wrap;
    position: sticky;
    bottom: 0;
    background: var(--modal-bg);
}

.lm-clear {
    min-height: 44px;
}

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

.lm-btn {
    min-height: 44px;
    padding: 10px 20px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: filter 0.15s, transform 0.1s;
}

.lm-btn:active {
    transform: scale(0.97);
}

/* --- Mobile: fullscreen (<= 640px) --- */
@media (max-width: 640px) {
    .lm-backdrop {
        padding: 0;
        align-items: stretch;
    }

    .lm-card {
        width: 100%;
        max-width: 100%;
        height: 100dvh;
        max-height: 100dvh;
        border-radius: 0;
        border: none;
    }

    .lm-body {
        flex-direction: column;
        overflow-y: auto;
    }

    .lm-list {
        overflow: visible;
        flex: 0 0 auto;
    }

    .lm-preview-panel {
        flex: 0 0 auto;
    }

    .lm-preview-box {
        max-height: 160px;
    }

    .lm-footer {
        flex-direction: column-reverse;
        align-items: stretch;
    }

    .lm-footer-actions {
        width: 100%;
    }

    .lm-footer-actions .lm-btn {
        flex: 1 1 0;
    }
}