/* ================================================================
   main.css — Design System: variáveis, reset, layout, login
   ================================================================ */

/* ── Variáveis ──────────────────────────────────────────────────── */
:root {
    --color-primary:       #4f46e5;
    --color-primary-hover: #4338ca;
    --color-primary-light: #eef2ff;
    --color-danger:        #dc2626;
    --color-danger-light:  #fef2f2;
    --color-success:       #16a34a;
    --color-success-light: #f0fdf4;
    --color-warning:       #d97706;
    --color-warning-light: #fffbeb;

    --color-bg:            #f8fafc;
    --color-surface:       #ffffff;
    --color-border:        #e2e8f0;
    --color-text:          #1e293b;
    --color-text-muted:    #64748b;
    --color-text-light:    #94a3b8;

    --sidebar-width:       256px;
    --sidebar-collapsed:   72px;
    --topbar-height:       60px;

    --radius-sm:   4px;
    --radius-md:   8px;
    --radius-lg:   12px;
    --radius-full: 9999px;

    --shadow-sm:  0 1px 2px rgba(0,0,0,.05);
    --shadow-md:  0 4px 6px -1px rgba(0,0,0,.1), 0 2px 4px -2px rgba(0,0,0,.1);
    --shadow-lg:  0 10px 15px -3px rgba(0,0,0,.1), 0 4px 6px -4px rgba(0,0,0,.1);

    --font:        'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono:   'JetBrains Mono', 'Fira Code', monospace;
    --font-size:   14px;
    --line-height: 1.5;
}

/* ── Reset ──────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: var(--font-size); -webkit-text-size-adjust: 100%; }

body {
    font-family: var(--font);
    line-height: var(--line-height);
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; display: block; }

/* ── Layout principal (sidebar + conteúdo) ──────────────────────── */
.layout {
    display: flex;
    min-height: 100vh;
}

/* ── Sidebar ────────────────────────────────────────────────────── */
.sidebar {
    width: var(--sidebar-width);
    min-height: 100vh;
    background: var(--color-surface);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    transition: width .2s ease;
    overflow: hidden;
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px;
    height: var(--topbar-height);
    border-bottom: 1px solid var(--color-border);
    font-weight: 700;
    font-size: 15px;
    color: var(--color-primary);
    white-space: nowrap;
}

.sidebar-logo .logo-icon { font-size: 22px; flex-shrink: 0; }

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 8px 0;
    scrollbar-width: thin;
    scrollbar-color: var(--color-border) transparent;
}

.sidebar-section {
    padding: 16px 12px 4px;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--color-text-light);
    white-space: nowrap;
}

.sidebar-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    margin: 1px 8px;
    border-radius: var(--radius-md);
    color: var(--color-text-muted);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: background .15s, color .15s;
    text-decoration: none;
    white-space: nowrap;
}

.sidebar-item:hover { background: var(--color-primary-light); color: var(--color-primary); text-decoration: none; }
.sidebar-item.active { background: var(--color-primary-light); color: var(--color-primary); font-weight: 600; }

.sidebar-item .item-icon { font-size: 16px; flex-shrink: 0; width: 20px; text-align: center; }

/* ── Conteúdo principal ─────────────────────────────────────────── */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: margin-left .2s ease;
}

/* ── Topbar ─────────────────────────────────────────────────────── */
.topbar {
    height: var(--topbar-height);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 50;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.topbar-breadcrumb {
    font-size: 13px;
    color: var(--color-text-muted);
    font-weight: 500;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.topbar-user {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text);
}

.avatar {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    flex-shrink: 0;
}

/* ── Área da página ─────────────────────────────────────────────── */
.page-content {
    flex: 1;
    padding: 24px;
    max-width: 1280px;
    width: 100%;
    margin: 0 auto;
}

.page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.page-header h1 {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-text);
}

.page-header p {
    font-size: 13px;
    color: var(--color-text-muted);
    margin-top: 2px;
}

/* ── Login ──────────────────────────────────────────────────────── */
.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--color-bg);
}

.login-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 40px;
    width: 100%;
    max-width: 400px;
    box-shadow: var(--shadow-lg);
}

.login-logo {
    text-align: center;
    margin-bottom: 32px;
}

.login-logo .logo-icon { font-size: 40px; margin-bottom: 8px; }
.login-logo h1 { font-size: 20px; font-weight: 700; color: var(--color-primary); }
.login-logo p { font-size: 13px; color: var(--color-text-muted); margin-top: 4px; }

.login-form { display: flex; flex-direction: column; gap: 16px; }

/* ── Responsivo ─────────────────────────────────────────────────── */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform .25s ease;
    }
    .sidebar.open { transform: translateX(0); }
    .main-content { margin-left: 0; }
    .page-content { padding: 16px; }
}

/* ── Utilitários ─────────────────────────────────────────────────── */
.text-muted  { color: var(--color-text-muted); }
.text-danger { color: var(--color-danger); }
.text-sm     { font-size: 12px; }
.mt-1        { margin-top: 4px; }
.mt-2        { margin-top: 8px; }
.mt-4        { margin-top: 16px; }
.mb-4        { margin-bottom: 16px; }
.flex        { display: flex; }
.items-center { align-items: center; }
.gap-2       { gap: 8px; }
.gap-3       { gap: 12px; }
.justify-between { justify-content: space-between; }
.w-full      { width: 100%; }
.hidden      { display: none !important; }