/* --- CSS Custom Properties (Theming) --- */
:root {
    --bg-color: #f8f9fa;
    --surface-color: #ffffff;
    --primary-color: #3b82f6;
    --primary-color-dark: #2563eb;
    --text-color-dark: #1f2937;
    --text-color-body: #4b5563;
    --text-color-light: #6b7280;
    --border-color: #e5e7eb;
    --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: #3b82f6;
    --info-bg-color: #eff6ff;
    --info-text-color: #1e40af;
    --font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --border-radius: 0.75rem;
    --transition-speed: 0.2s;
}

/* Modo Escuro */
:root[data-theme="dark"] {
    --bg-color: #111827;
    --surface-color: #1f2937;
    --primary-color: #60a5fa;
    --primary-color-dark: #3b82f6;
    --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 {
    background-color: var(--bg-color);
    color: var(--text-color-body);
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

/* Transições suaves para elementos que mudam com o tema */
* {
    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 rgba(59, 130, 246, 0.2);
}

button, .btn {
    background-color: var(--primary-color);
    color: white;
    border: 1px solid var(--primary-color);
    transition: background-color var(--transition-speed), 
                border-color var(--transition-speed), 
                transform var(--transition-speed);
}

button:hover, .btn:hover {
    background-color: var(--primary-color-dark);
    border-color: var(--primary-color-dark);
}

/* 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);
}