@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;700&display=swap');

/* ==========================================================================
   1. SISTEMA DE DESIGN - VARIÁVEIS & TOKENS
   ========================================================================== */
:root {
    /* Brand & Accent */
    --color-primary: #0066cc;
    --color-primary-focus: #0071e3;
    --color-primary-on-dark: #2997ff;
    
    /* Surfaces */
    --color-canvas: #ffffff;
    --color-canvas-parchment: #f5f5f7;
    --color-surface-pearl: #fafafc;
    --color-surface-tile-1: #272729;
    --color-surface-tile-2: #2a2a2c;
    --color-surface-tile-3: #252527;
    --color-surface-black: #000000;
    --color-surface-chip-translucent: rgba(210, 210, 215, 0.64);
    
    /* Text / Ink */
    --color-ink: #1d1d1f;
    --color-body: #1d1d1f;
    --color-body-on-dark: #ffffff;
    --color-body-muted: #cccccc;
    --color-ink-muted-80: #333333;
    --color-ink-muted-48: #7a7a7a;
    
    /* Dividers & Borders */
    --color-divider-soft: rgba(0, 0, 0, 0.04);
    --color-hairline: #e0e0e0;

    /* Spacing Scale */
    --spacing-xxs: 4px;
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 17px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    --spacing-section: 80px;

    /* Border Radii */
    --rounded-none: 0px;
    --rounded-xs: 5px;
    --rounded-sm: 8px;
    --rounded-md: 11px;
    --rounded-lg: 18px;
    --rounded-pill: 9999px;
}

/* Dark Theme Variables Override */
body.dark-theme {
    --color-canvas: #1c1c1e;
    --color-canvas-parchment: #121214;
    --color-surface-pearl: #2c2c2e;
    --color-ink: #f5f5f7;
    --color-body: #f5f5f7;
    --color-ink-muted-80: #e5e5ea;
    --color-ink-muted-48: #8e8e93;
    --color-hairline: #38383a;
    --color-divider-soft: rgba(255, 255, 255, 0.08);
}

body.dark-theme .input-apple {
    border-color: rgba(255, 255, 255, 0.2);
}

body.dark-theme .table-apple tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.04);
}

/* Alternador de Tema */
.theme-toggle-btn {
    background: none;
    border: none;
    color: var(--color-body-on-dark);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    border-radius: var(--rounded-sm);
    transition: background-color 0.2s ease, transform 0.1s ease;
}

.theme-toggle-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.theme-toggle-btn:active {
    transform: scale(0.95);
}

/* ==========================================================================
   2. CONFIGURAÇÕES GERAIS E TIPOGRAFIA
   ========================================================================== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Inter", sans-serif;
    font-size: 17px;
    font-weight: 400;
    line-height: 1.44; /* Ajuste Inter */
    letter-spacing: -0.011em;
    color: var(--color-body);
    background-color: var(--color-canvas-parchment);
    -webkit-font-smoothing: antialiased;
}

/* Títulos com Tracking Negativo (Apple Tight) */
h1, h2, h3, h4, h5, h6 {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Inter", sans-serif;
    font-weight: 600; /* Apple usa 600 em vez de 700 para headlines */
    color: var(--color-ink);
    letter-spacing: -0.022em;
    line-height: 1.15;
}

/* Tamanhos de Título Específicos */
.hero-display {
    font-size: 56px;
    font-weight: 600;
    line-height: 1.07;
    letter-spacing: -0.028em;
}

.display-lg {
    font-size: 40px;
    font-weight: 600;
    line-height: 1.10;
    letter-spacing: -0.02em;
}

.display-md {
    font-size: 34px;
    font-weight: 600;
    line-height: 1.47;
    letter-spacing: -0.015em;
}

.lead-copy {
    font-size: 28px;
    font-weight: 400;
    line-height: 1.14;
    letter-spacing: 0.01em;
}

.tagline-copy {
    font-size: 21px;
    font-weight: 600;
    line-height: 1.19;
}

.body-strong {
    font-size: 17px;
    font-weight: 600;
    line-height: 1.24;
}

.caption-copy {
    font-size: 14px;
    font-weight: 400;
    line-height: 1.43;
}

.caption-strong {
    font-size: 14px;
    font-weight: 600;
    line-height: 1.29;
}

.fine-print {
    font-size: 12px;
    font-weight: 400;
    line-height: 1.0;
    color: var(--color-ink-muted-48);
}

/* ==========================================================================
   3. BOTÕES (BUTTON GRAMMAR)
   ========================================================================== */
.btn-apple {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    font-family: inherit;
    cursor: pointer;
    text-decoration: none;
    transition: transform 0.1s ease;
}

.btn-apple:active {
    transform: scale(0.95); /* Animação micro-escala obrigatória */
}

.btn-apple:focus-visible {
    outline: 2px solid var(--color-primary-focus);
    outline-offset: 2px;
}

/* Primary Button (Blue Pill) */
.btn-primary-pill {
    extend: .btn-apple;
    background-color: var(--color-primary);
    color: #ffffff;
    font-size: 17px;
    font-weight: 400;
    padding: 11px 22px;
    border-radius: var(--rounded-pill);
}

/* Secondary Button (Ghost Pill) */
.btn-secondary-pill {
    extend: .btn-apple;
    background-color: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
    font-size: 17px;
    font-weight: 400;
    padding: 11px 22px;
    border-radius: var(--rounded-pill);
}

/* Dark Utility Button */
.btn-dark-utility {
    extend: .btn-apple;
    background-color: var(--color-ink);
    color: var(--color-body-on-dark);
    font-size: 14px;
    font-weight: 400;
    padding: 8px 15px;
    border-radius: var(--rounded-sm);
}

/* Pearl Capsule Button */
.btn-pearl-capsule {
    extend: .btn-apple;
    background-color: var(--color-surface-pearl);
    color: var(--color-ink-muted-80);
    border: 3px solid var(--color-divider-soft);
    font-size: 14px;
    font-weight: 400;
    padding: 8px 14px;
    border-radius: var(--rounded-md);
}

/* Text Links */
.text-link {
    color: var(--color-primary);
    text-decoration: none;
}
.text-link:hover {
    text-decoration: underline;
}

.text-link-on-dark {
    color: var(--color-primary-on-dark);
    text-decoration: none;
}
.text-link-on-dark:hover {
    text-decoration: underline;
}

/* ==========================================================================
   4. NAVBARS & LAYOUT ESTRUTURAL
   ========================================================================== */

/* Global Nav (Black Bar) */
.global-nav {
    height: 44px;
    background-color: var(--color-surface-black);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-lg);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
}

.global-nav-brand {
    color: var(--color-body-on-dark);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    letter-spacing: -0.01em;
}

.global-nav-menu {
    display: flex;
    gap: 20px;
    list-style: none;
}

.global-nav-link {
    color: var(--color-body-on-dark);
    font-size: 12px;
    font-weight: 400;
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.2s ease;
}

.global-nav-link:hover {
    opacity: 1;
}

/* Sub-nav Frosted */
.sub-nav-frosted {
    height: 52px;
    background-color: rgba(245, 245, 247, 0.8);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--color-hairline);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-lg);
    position: fixed;
    top: 44px;
    left: 0;
    width: 100%;
    z-index: 990;
}

.sub-nav-title {
    font-size: 21px;
    font-weight: 600;
    color: var(--color-ink);
}

.sub-nav-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

/* Layout Container Principal */
.app-layout {
    display: flex;
    margin-top: 96px; /* Altura de global-nav (44px) + sub-nav (52px) */
    min-height: calc(100vh - 96px);
}

/* Sidebar Minimalista & Profissional */
.app-sidebar {
    width: 260px;
    background-color: var(--color-canvas);
    border-right: 1px solid var(--color-hairline);
    padding: var(--spacing-md) 0;
    flex-shrink: 0;
    overflow-y: auto;
    position: sticky;
    top: 96px;
    height: calc(100vh - 96px);
}

.sidebar-menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.sidebar-section-title {
    padding: 16px var(--spacing-lg) 6px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--color-ink-muted-48);
    letter-spacing: 0.08em;
}

/* Link e Cabeçalho de Dropdown do Menu */
.sidebar-link,
.sidebar-dropdown-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    margin: 1px 12px;
    color: var(--color-ink-muted-80);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--rounded-sm);
    cursor: pointer;
    user-select: none;
    transition: all 0.2s cubic-bezier(0.25, 1, 0.5, 1);
}

.sidebar-dropdown-header {
    justify-content: space-between;
    width: calc(100% - 24px);
    background: none;
    border: none;
    text-align: left;
    font-family: inherit;
}

.sidebar-dropdown-title {
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-icon {
    color: var(--color-ink-muted-48);
    flex-shrink: 0;
    transition: color 0.2s ease;
}

.chevron-icon {
    color: var(--color-ink-muted-48);
    flex-shrink: 0;
    transition: transform 0.2s cubic-bezier(0.25, 1, 0.5, 1), color 0.2s ease;
}

/* Hover States */
.sidebar-link:hover,
.sidebar-dropdown-header:hover {
    background-color: rgba(0, 0, 0, 0.04);
    color: var(--color-ink);
}

.sidebar-link:hover .sidebar-icon,
.sidebar-dropdown-header:hover .sidebar-icon,
.sidebar-dropdown-header:hover .chevron-icon {
    color: var(--color-ink);
}

/* Active State */
.sidebar-item.active .sidebar-link {
    color: var(--color-primary);
    font-weight: 600;
    background-color: rgba(0, 102, 204, 0.08);
}

.sidebar-item.active .sidebar-link .sidebar-icon {
    color: var(--color-primary);
}

/* Submenus Colapsáveis */
.sidebar-dropdown-group {
    display: flex;
    flex-direction: column;
}

.sidebar-submenu {
    list-style: none;
    margin-left: 27px; /* alinhamento com o início do texto do pai */
    padding-left: 8px;
    border-left: 1px solid var(--color-hairline);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s cubic-bezier(0.25, 1, 0.5, 1);
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.sidebar-dropdown-group.open .sidebar-submenu {
    max-height: 500px; /* valor limite alto o bastante para conter todos os sub-links */
    margin-top: 2px;
    margin-bottom: 6px;
}

.sidebar-dropdown-group.open .chevron-icon {
    transform: rotate(180deg);
}

/* Sub-links menores e mais discretos */
.sidebar-submenu .sidebar-link {
    padding: 8px 12px;
    margin: 1px 8px 1px 0;
    font-size: 13.5px;
    color: var(--color-ink-muted-48);
}

.sidebar-submenu .sidebar-item.active .sidebar-link {
    color: var(--color-primary);
    font-weight: 600;
    background-color: rgba(0, 102, 204, 0.08);
}

.sidebar-submenu .sidebar-link:hover {
    color: var(--color-ink);
    background-color: rgba(0, 0, 0, 0.04);
}

/* Main Content Area */
.app-content {
    flex-grow: 1;
    padding: var(--spacing-xl);
    max-width: 1440px;
    margin: 0 auto;
    width: 100%;
}

/* ==========================================================================
   5. COMPONENTES: CARDS, TABELAS, FORMULÁRIOS
   ========================================================================== */

/* Cartões do Dashboard (Sem Sombras, Minimalistas) */
.card-apple {
    background-color: var(--color-canvas);
    border: 1px solid var(--color-hairline);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.card-title-muted {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-ink-muted-48);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-xs);
}

/* Elementos de Formulário */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-ink-muted-80);
    margin-bottom: var(--spacing-xxs);
}

.input-apple {
    width: 100%;
    height: 44px;
    padding: 0 var(--spacing-md);
    font-family: inherit;
    font-size: 17px;
    background-color: var(--color-canvas);
    border: 1px solid rgba(0, 0, 0, 0.15);
    border-radius: var(--rounded-sm);
    color: var(--color-ink);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.input-apple:focus {
    border-color: var(--color-primary-focus);
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.15);
}

/* Tabelas Minimalistas (Sem linhas verticais) */
.table-apple {
    width: 100%;
    border-collapse: collapse;
    margin-top: var(--spacing-md);
}

.table-apple th {
    text-align: left;
    padding: 12px;
    border-bottom: 2px solid var(--color-hairline);
    font-size: 14px;
    font-weight: 600;
    color: var(--color-ink-muted-48);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table-apple td {
    padding: 16px 12px;
    border-bottom: 1px solid var(--color-hairline);
    font-size: 17px;
    color: var(--color-ink);
}

.table-apple tbody tr:hover {
    background-color: var(--color-canvas-parchment);
}

/* Sombra Única de Produto (Exclusiva para imagens transparentes de equipamentos) */
.product-shadow {
    box-shadow: rgba(0, 0, 0, 0.22) 3px 5px 30px 0;
}

/* Botão Hambúrguer no Menu Global */
.menu-toggle-btn {
    display: none; /* Oculto por padrão no desktop */
    background: none;
    border: none;
    color: var(--color-body-on-dark);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    padding: 8px;
    border-radius: var(--rounded-sm);
    transition: background-color 0.2s ease, transform 0.1s ease;
}

.menu-toggle-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.menu-toggle-btn:active {
    transform: scale(0.95);
}

/* Overlay backdrop */
.sidebar-backdrop {
    position: fixed;
    top: 44px;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    z-index: 1040;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

/* ==========================================================================
   6. RESPONSIVIDADE E ADAPTAÇÕES DE TELA
   ========================================================================== */
@media (max-width: 833px) {
    .menu-toggle-btn {
        display: flex;
    }
    
    .app-sidebar {
        display: block !important;
        position: fixed;
        top: 44px;
        left: 0;
        bottom: 0;
        z-index: 1050;
        width: 260px;
        background-color: var(--color-canvas);
        border-right: 1px solid var(--color-hairline);
        transform: translateX(-100%);
        transition: transform 0.3s cubic-bezier(0.25, 1, 0.5, 1);
    }
    
    .app-sidebar.menu-open {
        transform: translateX(0);
        box-shadow: rgba(0, 0, 0, 0.15) 3px 0 15px 0;
    }
    
    .sidebar-backdrop.active {
        opacity: 1;
        visibility: visible;
    }
    
    .global-nav-menu {
        display: none; /* Menu do topo oculto no mobile */
    }
    
    .app-layout {
        flex-direction: column;
        margin-top: 96px;
        min-height: calc(100vh - 96px);
    }

    .sub-nav-frosted {
        padding: 0 var(--spacing-sm);
        height: auto;
        min-height: 52px;
        flex-wrap: wrap;
        padding-top: 8px;
        padding-bottom: 8px;
        gap: 8px;
    }
    
    .sub-nav-actions {
        gap: 8px;
    }

    /* Forçar grids em coluna única no mobile (sobrescrevendo estilos inline) */
    div[style*="grid-template-columns"] {
        grid-template-columns: 1fr !important;
    }
}

@media (max-width: 640px) {
    .app-content {
        padding: var(--spacing-md);
    }
    
    .hero-display {
        font-size: 34px;
    }
    
    .display-lg {
        font-size: 28px;
    }

    .table-apple th, .table-apple td {
        padding: 10px 8px;
        font-size: 14px;
    }
}