/* --- CSS Custom Properties (Theming) --- */
:root {
    /* Chrome fixo — sidebar + topbar (todas as páginas autenticadas) */
    --sidebar-width: 280px;
    --sidebar-width-collapsed: 80px;
    --topbar-height: 52px;
    --sidebar-header-height: 52px;

    --bg-color: #f8fafc;
    --surface-color: #ffffff;
    --saas-bg: #f4f6fb;
    --saas-bg-subtle: #f8fafc;

    /* Tipografia SaaS — Plus Jakarta (títulos) + Inter (corpo) */
    --font-display: 'Plus Jakarta Sans', 'Inter', system-ui, sans-serif;
    --font-saas: 'Inter', system-ui, -apple-system, sans-serif;
    --font-family: var(--font-saas);

    /* Paleta viva — índigo + violeta + rosa */
    --primary-color: #6366f1;
    --primary-color-dark: #4f46e5;
    --accent-color: #ec4899;
    --accent-cyan: #06b6d4;
    --accent-violet: #8b5cf6;
    --primary-soft: rgba(99, 102, 241, 0.1);
    --primary-glow: rgba(99, 102, 241, 0.35);
    --gradient-brand: linear-gradient(135deg, #6366f1 0%, #8b5cf6 48%, #ec4899 100%);
    --gradient-brand-hover: linear-gradient(135deg, #4f46e5 0%, #7c3aed 48%, #db2777 100%);
    --glow-primary: rgba(99, 102, 241, 0.14);
    --glow-accent: rgba(236, 72, 153, 0.1);
    --glow-cyan: rgba(6, 182, 212, 0.08);

    --text-color-dark: #0f172a;
    --text-color-body: #475569;
    --text-color-light: #64748b;
    --border-color: #e2e8f0;
    --danger-color: #ef4444;
    --danger-color-hover: #dc2626;
    --success-color: #10b981;
    --success-bg-color: #f0fdf4;
    --success-text-color: #166534;
    --warning-color: #f59e0b;
    --warning-bg-color: #fffbeb;
    --warning-text-color: #92400e;
    --info-color: #6366f1;
    --info-bg-color: #eef2ff;
    --info-text-color: #4338ca;

    /* Tipografia */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 0.9375rem;
    --text-md: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --leading-tight: 1.25;
    --leading-normal: 1.5;
    --leading-relaxed: 1.65;
    --tracking-tight: -0.02em;

    /* Espaçamento (grid 4px) */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-7: 1.75rem;
    --space-8: 2rem;

    /* Raios e sombras */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --page-max-width: 1440px;
    --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
    --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 12px 32px rgba(99, 102, 241, 0.12);
    --border-radius: var(--radius-lg);
    --focus-ring: rgba(99, 102, 241, 0.25);
    --transition-speed: 0.22s;
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
}

/* Modo Escuro */
:root[data-theme="dark"] {
    --bg-color: #0c0f1a;
    --surface-color: #151b2e;
    --saas-bg: #0a0d14;
    --saas-bg-subtle: #12182a;
    --primary-color: #818cf8;
    --primary-color-dark: #6366f1;
    --primary-soft: rgba(129, 140, 248, 0.15);
    --primary-glow: rgba(129, 140, 248, 0.25);
    --glow-primary: rgba(129, 140, 248, 0.12);
    --glow-accent: rgba(244, 114, 182, 0.1);
    --glow-cyan: rgba(34, 211, 238, 0.06);
    --gradient-brand: linear-gradient(135deg, #818cf8 0%, #a78bfa 45%, #f472b6 100%);
    --gradient-brand-hover: linear-gradient(135deg, #6366f1 0%, #8b5cf6 45%, #ec4899 100%);
    --text-color-dark: #f9fafb;
    --text-color-body: #d1d5db;
    --text-color-light: #9ca3af;
    --border-color: #374151;
    --danger-color: #f87171;
    --danger-color-hover: #ef4444;
    --success-color: #6ee7b7;
    --success-bg-color: #064e3b;
    --success-text-color: #6ee7b7;
    --warning-color: #fbbf24;
    --warning-bg-color: #451a03;
    --warning-text-color: #fbbf24;
    --info-color: #93c5fd;
    --info-bg-color: #1e3a8a;
    --info-text-color: #93c5fd;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.4);
}

/* Aplicação global do tema */
body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-color-body);
}

body,
button,
input,
textarea,
select,
.btn,
.card,
.saas-card {
    transition: background-color var(--transition-speed),
                color var(--transition-speed),
                border-color var(--transition-speed),
                box-shadow var(--transition-speed);
}

/* Estilos específicos para elementos comuns */
.card, .container, .form-container, .content-area {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

input, textarea, select {
    background-color: var(--surface-color);
    color: var(--text-color-body);
    border: 1px solid var(--border-color);
    transition: background-color var(--transition-speed), 
                color var(--transition-speed), 
                border-color var(--transition-speed);
}

input:focus, textarea:focus, select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--focus-ring);
}

button:not(.btn-secondary):not(.btn-ghost):not(.btn-danger):not(.theme-toggle):not(.nav-group-toggle):not(.login-theme-btn):not(.login-toggle-pwd),
.btn-primary {
    background: var(--gradient-brand);
    color: #fff;
    border: none;
    transition: transform var(--transition-speed) var(--ease-out-expo),
                box-shadow var(--transition-speed);
}

button:not(.btn-secondary):not(.btn-ghost):not(.btn-danger):not(.theme-toggle):not(.nav-group-toggle):not(.login-theme-btn):not(.login-toggle-pwd):hover,
.btn-primary:hover {
    background: var(--gradient-brand-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 14px var(--primary-glow);
}

/* Scrollbar personalizada para modo escuro */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

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