/* ===================================
   ErbsUI - Base Styles & Reset
   =================================== */

/* FontAwesome font-display: swap override — evita render-blocking no Lighthouse */
.fa, .fas, .far, .fal, .fab, .fa-solid, .fa-regular, .fa-light, .fa-brands {
    font-display: swap;
}

/* FOUC Prevention - Critical fallbacks using design tokens */
.erbs-layout { 
    display: flex; 
    min-height: 100vh;
    background-color: var(--erbs-page-bg);
}

.erbs-sidebar { 
    width: var(--erbs-sidebar-width); 
    height: 100vh; 
    position: fixed; 
    left: 0; 
    top: 0; 
    background-color: var(--erbs-sidebar-bg); 
    border-right: 1px solid var(--erbs-border); 
    z-index: 1000; 
    overflow-y: auto; 
}

.erbs-main { 
    flex: 1; 
    margin-left: var(--erbs-sidebar-width); 
    display: flex; 
    flex-direction: column;
    min-width: 0;
}

.erbs-header { 
    height: var(--erbs-header-height); 
    background-color: var(--erbs-bg); 
    border-bottom: 1px solid var(--erbs-border); 
    position: sticky; 
    top: 0; 
    z-index: 999; 
    display: flex; 
    align-items: center; 
    padding: 0 var(--erbs-spacing-6); 
}

.erbs-content {
    flex: 1;
    padding: var(--erbs-spacing-6) var(--erbs-spacing-8);
}

/* Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    overflow-y: auto;
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: var(--erbs-scrollbar-thumb) var(--erbs-scrollbar-track);
}

/* Custom scrollbar — Chrome/Safari/Edge */
::-webkit-scrollbar {
    width: var(--erbs-scrollbar-width);
    height: var(--erbs-scrollbar-width);
}

::-webkit-scrollbar-track {
    background: var(--erbs-scrollbar-track);
}

::-webkit-scrollbar-thumb {
    background: var(--erbs-scrollbar-thumb);
    border-radius: var(--erbs-radius-sm);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--erbs-scrollbar-thumb-hover);
}

/* Thin scrollbar variant for compact areas */
::-webkit-scrollbar:horizontal {
    height: var(--erbs-scrollbar-width-thin);
}

/* Base Typography */
body {
    font-family: var(--erbs-font);
    font-size: var(--erbs-text-sm);
    line-height: var(--erbs-text-sm-leading);
    color: var(--erbs-text-primary);
    background-color: var(--erbs-page-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    /* Touch performance — elimina delay de 300ms em tap e previene bounce */
    touch-action: manipulation;
    overscroll-behavior-y: none;
    /* FOUC prevention — animation revela após 1s mesmo se JS falhar */
    opacity: 0;
    animation: erbs-fouc-fallback 0s 1s forwards;
}

body.loaded {
    animation: none;
    opacity: 1;
    transition: opacity var(--erbs-duration-slow) var(--erbs-ease-standard);
}

@keyframes erbs-fouc-fallback {
    to { opacity: 1; }
}

/* Text overflow utilities */
.erbs-text-truncate {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.erbs-text-clamp-2 {
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    overflow: hidden;
}

.erbs-text-clamp-3 {
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    overflow: hidden;
}

.erbs-text-break {
    word-break: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}

/* Skip link for accessibility */
.erbs-skip-link {
    position: absolute;
    top: -100px;
    left: var(--erbs-spacing-2);
    background: var(--erbs-primary);
    color: var(--erbs-text-on-color);
    padding: var(--erbs-spacing-2) var(--erbs-spacing-3);
    text-decoration: none;
    border-radius: var(--erbs-radius-control);
    z-index: var(--erbs-z-tooltip);
    transition: top var(--erbs-duration-fast) var(--erbs-ease-standard), opacity var(--erbs-duration-fast) var(--erbs-ease-standard);
    min-height: 44px;
    min-width: 44px;
    display: inline-flex;
    align-items: center;
    gap: var(--erbs-spacing-sm);
    font-weight: var(--erbs-font-medium);
    box-shadow: var(--erbs-shadow-md);
}

.erbs-skip-link:focus {
    top: var(--erbs-spacing-2);
    opacity: 1;
}

/* Focus visible for keyboard navigation - WCAG 2.1 AA */
/* Remove default browser outline, rely on focus-visible */
*:focus {
    outline: none;
}

*:focus-visible {
    outline: var(--erbs-focus-ring-width) solid var(--erbs-focus-ring-color);
    outline-offset: var(--erbs-focus-ring-offset);
}

/* Inputs and textareas need a softer ring shadow for modern look */
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[contenteditable]:focus-visible {
    outline: none;
    box-shadow: var(--erbs-focus-ring-shadow);
    border-color: var(--erbs-primary) !important;
}

/* Focus ring for destructive actions — danger color */
.erbs-btn-danger:focus-visible,
.erbs-btn-danger:active:focus-visible,
button[class*="danger"]:focus-visible,
a[class*="danger"]:focus-visible {
    outline-color: var(--erbs-danger);
    box-shadow: var(--erbs-focus-ring-shadow-danger);
}

/* ===================================
   Selection color — brand-tinted text selection
   =================================== */
::selection {
    background-color: var(--erbs-primary-alpha-12);
    color: var(--erbs-text-primary);
}

::-moz-selection {
    background-color: var(--erbs-primary-alpha-12);
    color: var(--erbs-text-primary);
}

/* ===================================
   Cursor utilities — indicate interaction state
   =================================== */
[role="button"],
.erbs-card--clickable,
.erbs-card--interactive {
    cursor: pointer;
}

[disabled],
[aria-disabled="true"],
.erbs-is-disabled {
    cursor: not-allowed;
}

/* ===================================
   Print styles — clean output for tables and reports
   =================================== */
@media print {
    .erbs-sidebar,
    .erbs-header,
    .erbs-footer,
    .erbs-skip-link,
    .erbs-header-toggle,
    .erbs-sidebar-close {
        display: none !important;
    }

    .erbs-main {
        margin-left: 0 !important;
    }

    .erbs-content {
        padding: 0 !important;
    }

    .erbs-card {
        box-shadow: none !important;
        border: 1px solid #ccc !important;
        break-inside: avoid;
    }

    body {
        background: white !important;
        color: black !important;
        font-size: 12pt;
    }

    a {
        color: black !important;
        text-decoration: underline;
    }

    a[href]::after {
        content: " (" attr(href) ")";
        font-size: 10pt;
        color: #555;
    }

    table {
        page-break-inside: auto;
    }

    tr {
        page-break-inside: avoid;
        page-break-after: auto;
    }
}

/* ===================================
   Respect reduced motion preference - WCAG 2.3.3
   All transitions and animations are disabled for users who prefer reduced motion
   =================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    body {
        opacity: 1;
    }

    .erbs-skip-link {
        transition: none;
    }
}

/* ===================================
   Heading defaults - professional typesetting
   Letter-spacing tight for headings, proper line-heights
   =================================== */
h1, .erbs-h1 {
    font-size: var(--erbs-text-3xl);
    line-height: var(--erbs-text-3xl-leading);
    font-weight: var(--erbs-font-semibold);
    letter-spacing: var(--erbs-letter-spacing-tight);
    color: var(--erbs-text-primary);
}

h2, .erbs-h2 {
    font-size: var(--erbs-text-xl);
    line-height: var(--erbs-text-xl-leading);
    font-weight: var(--erbs-font-semibold);
    letter-spacing: var(--erbs-letter-spacing-tight);
    color: var(--erbs-text-primary);
}

h3, .erbs-h3 {
    font-size: var(--erbs-text-lg);
    line-height: var(--erbs-text-lg-leading);
    font-weight: var(--erbs-font-semibold);
    color: var(--erbs-text-primary);
}

h4, .erbs-h4 {
    font-size: var(--erbs-text-base);
    line-height: var(--erbs-text-base-leading);
    font-weight: var(--erbs-font-semibold);
    color: var(--erbs-text-primary);
}

h5, .erbs-h5 {
    font-size: var(--erbs-text-sm);
    line-height: var(--erbs-text-sm-leading);
    font-weight: var(--erbs-font-semibold);
    color: var(--erbs-text-secondary);
}

h6, .erbs-h6 {
    font-size: var(--erbs-text-xs);
    line-height: var(--erbs-text-xs-leading);
    font-weight: var(--erbs-font-semibold);
    color: var(--erbs-text-secondary);
    text-transform: uppercase;
    letter-spacing: var(--erbs-letter-spacing-wider);
}

/* Modern heading line balance for better readability */
h1, h2, h3, .erbs-h1, .erbs-h2, .erbs-h3 {
    text-wrap: balance;
}

p {
    line-height: var(--erbs-text-sm-leading);
}

/* Links — modern SaaS style with accessible hover states */
a {
    color: var(--erbs-primary);
    text-decoration: none;
    transition: color var(--erbs-duration-fast) var(--erbs-ease-standard);
}

a:hover {
    color: var(--erbs-primary-hover);
    text-decoration: underline;
}

a:focus-visible {
    outline: var(--erbs-focus-ring-width) solid var(--erbs-focus-ring-color);
    outline-offset: var(--erbs-focus-ring-offset);
    border-radius: var(--erbs-radius-xs);
}

/* Strong text uses medium weight, not bold — modern SaaS aesthetic */
strong, b {
    font-weight: var(--erbs-font-semibold);
}

/* Base lists */
ul, ol {
    padding-left: var(--erbs-spacing-5);
}

li {
    margin-bottom: var(--erbs-spacing-1);
}