/*
 * =============================================================================
 * HELPDESK - DESIGN SYSTEM 2025
 * Base CSS com variáveis, reset e utilitários
 * =============================================================================
 */

/* -----------------------------------------------------------------------------
 * CSS RESET MODERNO
 * -------------------------------------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    background-color: var(--color-bg);
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img, picture, video, canvas, svg {
    display: block;
    max-width: 100%;
}

input, button, textarea, select {
    font: inherit;
    color: inherit;
}

button {
    cursor: pointer;
    border: none;
    background: none;
}

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

ul, ol {
    list-style: none;
}

/* Screen reader only - visually hidden but accessible */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* -----------------------------------------------------------------------------
 * VARIÁVEIS CSS - DESIGN TOKENS
 * -------------------------------------------------------------------------- */
:root {
    /* === CORES PRIMÁRIAS (sobrescritas pelo WhiteLabel) === */
    --color-primary: #4f8cdc;
    --color-primary-hover: #3d7bc9;
    --color-primary-light: rgba(79, 140, 220, 0.12);

    --color-secondary: #5a9c94;
    --color-secondary-hover: #4a8a82;

    --color-accent: #7c8dbd;
    --color-accent-hover: #6b7cac;

    /* === CORES SEMÂNTICAS === */
    --color-success: #10b981;
    --color-success-light: rgba(16, 185, 129, 0.1);
    --color-warning: #f59e0b;
    --color-warning-light: rgba(245, 158, 11, 0.1);
    --color-danger: #ef4444;
    --color-danger-light: rgba(239, 68, 68, 0.1);
    --color-info: #3b82f6;
    --color-info-light: rgba(59, 130, 246, 0.1);

    /* === CORES NEUTRAS - TEMA CLARO === */
    --color-bg: #f8fafc;
    --color-bg-elevated: #ffffff;
    --color-surface: #ffffff;
    --color-surface-hover: #f1f5f9;
    --color-border: #e2e8f0;
    --color-border-light: #f1f5f9;
    --color-text: #0f172a;
    --color-text-secondary: #475569;
    --color-text-muted: #94a3b8;
    --color-text-inverse: #ffffff;

    /* === GRADIENTES (leves e suaves) === */
    --gradient-primary: linear-gradient(135deg, #4f8cdc 0%, #5a9c94 100%);
    --gradient-accent: linear-gradient(135deg, #7c8dbd 0%, #4f8cdc 100%);
    --gradient-surface: linear-gradient(180deg, var(--color-surface) 0%, var(--color-bg) 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);

    /* === TIPOGRAFIA === */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-family-mono: 'JetBrains Mono', 'Fira Code', monospace;

    --font-size-xs: 0.75rem;    /* 12px */
    --font-size-sm: 0.875rem;   /* 14px */
    --font-size-base: 1rem;     /* 16px */
    --font-size-lg: 1.125rem;   /* 18px */
    --font-size-xl: 1.25rem;    /* 20px */
    --font-size-2xl: 1.5rem;    /* 24px */
    --font-size-3xl: 1.875rem;  /* 30px */
    --font-size-4xl: 2.25rem;   /* 36px */

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* === ESPAÇAMENTO === */
    --spacing-0: 0;
    --spacing-1: 0.25rem;   /* 4px */
    --spacing-2: 0.5rem;    /* 8px */
    --spacing-3: 0.75rem;   /* 12px */
    --spacing-4: 1rem;      /* 16px */
    --spacing-5: 1.25rem;   /* 20px */
    --spacing-6: 1.5rem;    /* 24px */
    --spacing-8: 2rem;      /* 32px */
    --spacing-10: 2.5rem;   /* 40px */
    --spacing-12: 3rem;     /* 48px */
    --spacing-16: 4rem;     /* 64px */
    --spacing-20: 5rem;     /* 80px */

    /* === BORDAS === */
    --radius-sm: 0.375rem;  /* 6px */
    --radius-md: 0.5rem;    /* 8px */
    --radius-lg: 0.75rem;   /* 12px */
    --radius-xl: 1rem;      /* 16px */
    --radius-2xl: 1.5rem;   /* 24px */
    --radius-full: 9999px;

    --border-width: 1px;
    --border-width-2: 2px;

    /* === SOMBRAS === */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);

    /* === TRANSIÇÕES === */
    --transition-fast: 100ms ease;
    --transition-normal: 200ms ease;
    --transition-slow: 300ms ease;
    --transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);

    /* === Z-INDEX === */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;
    --z-toast: 800;

    /* === BREAKPOINTS (para referência em JS) === */
    --breakpoint-sm: 640px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1280px;
    --breakpoint-2xl: 1536px;

    /* === GLASSMORPHISM === */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.3);
    --glass-blur: blur(12px);
}

/* -----------------------------------------------------------------------------
 * TEMA ESCURO
 * -------------------------------------------------------------------------- */
[data-theme="dark"] {
    --color-bg: #0f172a;
    --color-bg-elevated: #1e293b;
    --color-surface: #1e293b;
    --color-surface-hover: #334155;
    --color-border: #334155;
    --color-border-light: #1e293b;
    --color-text: #f1f5f9;
    --color-text-secondary: #cbd5e1;
    --color-text-muted: #64748b;

    --gradient-surface: linear-gradient(180deg, var(--color-surface) 0%, var(--color-bg) 100%);

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.4);

    --glass-bg: rgba(30, 41, 59, 0.8);
    --glass-border: rgba(51, 65, 85, 0.5);
}

/* -----------------------------------------------------------------------------
 * UTILITÁRIOS DE LAYOUT
 * -------------------------------------------------------------------------- */
.container {
    width: 100%;
    max-width: 1280px;
    margin-inline: auto;
    padding-inline: var(--spacing-4);
}

@media (min-width: 640px) {
    .container { padding-inline: var(--spacing-6); }
}

@media (min-width: 1024px) {
    .container { padding-inline: var(--spacing-8); }
}

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-1 { gap: var(--spacing-1); }
.gap-2 { gap: var(--spacing-2); }
.gap-3 { gap: var(--spacing-3); }
.gap-4 { gap: var(--spacing-4); }
.gap-6 { gap: var(--spacing-6); }
.gap-8 { gap: var(--spacing-8); }

.grid { display: grid; }
.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

/* Col-span utilities */
.col-span-1 { grid-column: span 1; }
.col-span-2 { grid-column: span 2; }
.col-span-3 { grid-column: span 3; }
.col-span-4 { grid-column: span 4; }
.col-span-full { grid-column: 1 / -1; }

/* Row-span utilities */
.row-span-2 { grid-row: span 2; }
.row-span-3 { grid-row: span 3; }

@media (min-width: 640px) {
    .sm\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
    .sm\:col-span-1 { grid-column: span 1; }
}

@media (min-width: 768px) {
    .md\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
    .md\:grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
    .md\:grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
    .md\:col-span-1 { grid-column: span 1; }
    .md\:col-span-2 { grid-column: span 2; }
    .md\:col-span-3 { grid-column: span 3; }
    .md\:gap-6 { gap: var(--spacing-6); }
    .md\:gap-8 { gap: var(--spacing-8); }
}

@media (min-width: 1024px) {
    .lg\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
    .lg\:grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
    .lg\:grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
    .lg\:grid-cols-5 { grid-template-columns: repeat(5, 1fr); }
    .lg\:col-span-1 { grid-column: span 1; }
    .lg\:col-span-2 { grid-column: span 2; }
    .lg\:col-span-3 { grid-column: span 3; }
}

@media (min-width: 1280px) {
    .xl\:grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
    .xl\:grid-cols-5 { grid-template-columns: repeat(5, 1fr); }
    .xl\:grid-cols-6 { grid-template-columns: repeat(6, 1fr); }
}

/* -----------------------------------------------------------------------------
 * UTILITÁRIOS DE TEXTO
 * -------------------------------------------------------------------------- */
.text-xs { font-size: var(--font-size-xs); }
.text-sm { font-size: var(--font-size-sm); }
.text-base { font-size: var(--font-size-base); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }
.text-2xl { font-size: var(--font-size-2xl); }
.text-3xl { font-size: var(--font-size-3xl); }
.text-4xl { font-size: var(--font-size-4xl); }

.font-normal { font-weight: var(--font-weight-normal); }
.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-muted { color: var(--color-text-muted); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-danger { color: var(--color-danger); }

.truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* -----------------------------------------------------------------------------
 * UTILITÁRIOS DE ESPAÇAMENTO
 * -------------------------------------------------------------------------- */
.m-0 { margin: 0; }
.m-auto { margin: auto; }
.mt-1 { margin-top: var(--spacing-1); }
.mt-2 { margin-top: var(--spacing-2); }
.mt-3 { margin-top: var(--spacing-3); }
.mt-4 { margin-top: var(--spacing-4); }
.mt-6 { margin-top: var(--spacing-6); }
.mt-8 { margin-top: var(--spacing-8); }
.mb-1 { margin-bottom: var(--spacing-1); }
.mb-2 { margin-bottom: var(--spacing-2); }
.mb-3 { margin-bottom: var(--spacing-3); }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-6 { margin-bottom: var(--spacing-6); }
.mb-8 { margin-bottom: var(--spacing-8); }

.p-0 { padding: 0; }
.p-2 { padding: var(--spacing-2); }
.p-3 { padding: var(--spacing-3); }
.p-4 { padding: var(--spacing-4); }
.p-6 { padding: var(--spacing-6); }
.p-8 { padding: var(--spacing-8); }
.px-2 { padding-inline: var(--spacing-2); }
.px-3 { padding-inline: var(--spacing-3); }
.px-4 { padding-inline: var(--spacing-4); }
.px-6 { padding-inline: var(--spacing-6); }
.py-2 { padding-block: var(--spacing-2); }
.py-3 { padding-block: var(--spacing-3); }
.py-4 { padding-block: var(--spacing-4); }
.py-6 { padding-block: var(--spacing-6); }

/* Espaçamento vertical entre filhos - space-y */
.space-y-1 > * + * { margin-top: var(--spacing-1); }
.space-y-2 > * + * { margin-top: var(--spacing-2); }
.space-y-3 > * + * { margin-top: var(--spacing-3); }
.space-y-4 > * + * { margin-top: var(--spacing-4); }
.space-y-6 > * + * { margin-top: var(--spacing-6); }

/* Espaçamento horizontal entre filhos - space-x */
.space-x-2 > * + * { margin-left: var(--spacing-2); }
.space-x-3 > * + * { margin-left: var(--spacing-3); }
.space-x-4 > * + * { margin-left: var(--spacing-4); }

/* Espaçamento responsivo */
@media (min-width: 768px) {
    .md\:p-6 { padding: var(--spacing-6); }
    .md\:p-8 { padding: var(--spacing-8); }
    .md\:px-6 { padding-inline: var(--spacing-6); }
    .md\:py-6 { padding-block: var(--spacing-6); }
    .md\:mt-0 { margin-top: 0; }
    .md\:mb-0 { margin-bottom: 0; }
}

@media (min-width: 1024px) {
    .lg\:p-8 { padding: var(--spacing-8); }
    .lg\:p-10 { padding: var(--spacing-10); }
    .lg\:px-8 { padding-inline: var(--spacing-8); }
}

/* -----------------------------------------------------------------------------
 * UTILITÁRIOS VISUAIS
 * -------------------------------------------------------------------------- */
.rounded-sm { border-radius: var(--radius-sm); }
.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-2xl { border-radius: var(--radius-2xl); }
.rounded-full { border-radius: var(--radius-full); }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

.border { border: var(--border-width) solid var(--color-border); }
.border-2 { border: var(--border-width-2) solid var(--color-border); }
.border-primary { border-color: var(--color-primary); }

.opacity-0 { opacity: 0; }
.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }
.opacity-100 { opacity: 1; }

/* -----------------------------------------------------------------------------
 * VISIBILIDADE RESPONSIVA
 * -------------------------------------------------------------------------- */
.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }
.invisible { visibility: hidden; }

@media (max-width: 639px) {
    .sm\:hidden { display: none; }
}
@media (min-width: 640px) {
    .sm\:block { display: block; }
    .sm\:flex { display: flex; }
}
@media (max-width: 767px) {
    .md\:hidden { display: none; }
}
@media (min-width: 768px) {
    .md\:block { display: block; }
    .md\:flex { display: flex; }
}
@media (max-width: 1023px) {
    .lg\:hidden { display: none; }
}
@media (min-width: 1024px) {
    .lg\:block { display: block; }
    .lg\:flex { display: flex; }
}

/* -----------------------------------------------------------------------------
 * ANIMAÇÕES
 * -------------------------------------------------------------------------- */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.animate-fade-in { animation: fadeIn var(--transition-normal); }
.animate-fade-in-up { animation: fadeInUp var(--transition-slow); }
.animate-fade-in-down { animation: fadeInDown var(--transition-slow); }
.animate-slide-in-right { animation: slideInRight var(--transition-slow); }
.animate-pulse { animation: pulse 2s infinite; }
.spin { animation: spin 1s linear infinite; }
.animate-spin { animation: spin 1s linear infinite; }
.animate-bounce { animation: bounce 1s infinite; }

/* -----------------------------------------------------------------------------
 * SCROLLBAR CUSTOMIZADA
 * -------------------------------------------------------------------------- */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: var(--radius-full);
    transition: background var(--transition-fast);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
}

/* Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--color-border) var(--color-bg);
}

/* -----------------------------------------------------------------------------
 * FOCUS STYLES (Acessibilidade)
 * -------------------------------------------------------------------------- */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

:focus:not(:focus-visible) {
    outline: none;
}

/* -----------------------------------------------------------------------------
 * SELEÇÃO DE TEXTO
 * -------------------------------------------------------------------------- */
::selection {
    background: var(--color-primary-light);
    color: var(--color-primary);
}